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R&S FPS-K76/-K77 TD-SCDMA User Manual

1. 115 Z Zooming Activating remote EE Area Multiple mode remote Area remote D activallhg i retener rs Multiple MO siii i rete rh trees Multiple mode remote Remote e nre Restoring original display Single mode ansias iy Single mode remote AA
2. eese nennen 114 Configuring Frequency and Time Domain Measurements 144 Configuring the Result Display eeeeeeeeenneneeennnn nennen nnn 146 Starting a Measurement e enieiccceciesecc e rr reae unisce rea R Rai Re eaux 156 Retrieving Results iconic ii a tian sna Dana FERE ia dn Een s 161 LULUI 177 Importing and Exporting UO Data and Results eee 184 Configuring the Application Data Range MSRA mode only 186 Status RegisSters ooiiconiiinnicaii ii 188 Commands for Compatibility cccccceeeceseeeeeeeeeeeeeeeeeeseeeeeeseeseseeeesneeeeeesenseeeeenenes 190 Programming Examples TD SCDMA BTS cccseccssseeeeeeeeessseeeeseeeeseseeeeeneneeeea 192 UO Data File Format iq tar ooooccoconnnnccnnnnnccnnnonccncnnnanencnnnnannnnnannns 202 UO Parameter XML File Specification c cccccecseeeeeeesseeeeeeeeeseeeeeeeesseeeeeeeseeeees 202 VQ Data Binary A TE 206 List of Remote Commands TD SCDMA eee 208 C Q 212 1 1 Documentation Overview Preface Documentation Overview The user documentation for the R amp S FPS consists of the following parts e Printed Getting Started manual e Online Help system on the instrument
3. eee 174 GAL Culate lt n gt MARKS MS Y oo dicta e id ada 176 Ee EE RE e ita 176 CALCulate lt n gt LIMit lt k gt FAIL This command queries the result of a limit check To get a valid result you have to perform a complete measurement with synchroniza tion to the end of the measurement before reading out the result This is only possible for single measurement mode See also INITiate lt n gt CONTinuous on page 157 Return values lt Result gt 0 PASS 1 FAIL Example INIT WAI Starts a new sweep and waits for its end CALC LIM3 FAIL Queries the result of the check for limit line 3 Usage Query only SCPI confirmed Manual operation See Power vs Time on page 26 See Spectrum Emission Mask on page 29 CALCulate lt n gt MARKer lt m gt FUNCtion POWer lt sb gt RESult lt Measurement gt This command queries the results of power measurements lt n gt lt m gt are irrelevant To get a valid result you have to perform a complete measurement with synchroniza tion to the end of the measurement before reading out the result This is only possible for single measurement mode See also INITiate lt n gt CONTinuous on page 157 Suffix lt sb gt 1 2 3 4 5 irrelevant Retrieving Results Query parameters lt Measurement gt ACPower MCACpower ACLR measurements also known as adjacent channel power or multicarrier adjacent channel measurements Returns the power for every active transmi
4. Gul k k MAG KN e100 N 2560 ke 0 N 1 2 x sch where MAG magnitude error of chip number k Sk complex chip value of received signal Xk complex chip value of reference signal k index number of the evaluated chip N number of chips at each CPICH slot n index number for mean power calculation of reference signal R amp S FPS K76 K77 Measurements and Result Display 1 Magnitude Error vs Chip Chip O 256 hip Fig 3 6 Magnitude Error vs Chip display for TD SCDMA BTS measurements Remote command LAY ADD 1 RIGH MECHip See LAYout ADD WINDow on page 148 TRACe lt n gt DATA TRACE lt 1 4 gt Marker Table Displays a table with the current marker values for the active markers This table may be displayed automatically if configured accordingly see Marker Table Display on page 95 4 Marker Table X value Y value 13 25 GHz 200 0 dBm 0 0 dB 600 0 kHz 600 0 kHz 2 0 MHz Remote command LAY ADD 1 RIGH MTAB see LAYout ADD WINDow on page 148 Results CALCulate lt n gt MARKer lt m gt X on page 178 CALCulate lt n gt MARKer lt m gt Y on page 176 Peak Code Domain Error The Peak Code Domain Error is defined as the maximum value for the Code Domain Error for all codes In line with the TD SCDMA specifications the error is calculated between the mea surement signal and the ideal reference signal for a given slot and for each active code for any of the sup
5. Stops continuous sweep INIT CONT OFF Start a new measurement with 10 sweeps and wait for the end INIT WAI Programming Examples TD SCDMA BTS Query the result of the limit check for the 50 subframes against the transmission power mask CALC LIM FAIL Retrieve the calculated peak power value of the 50 subframes CALC MARK FUNC POW RES PPOW Result 1 02 dB Retrieve the trace data of the power vs time measurement TRAC DATA TRACE1 Result 1 201362252 1 173495054 1 187217355 1 186594367 1 171583891 1 188250422 1 204138160 1 181404829 1 186317205 1 197872400 Table 10 11 Trace results for power vs time measurement Subframe Power level 1 201362252 1 173495054 1 187217355 1 186594367 1 171583891 1 188250422 11 11 1 UO Parameter XML File Specification UO Data File Format iq tar UO data is packed in a file with the extension iq tar An iq tar file contains UO data in binary format together with meta information that describes the nature and the source of data e g the sample rate The objective of the iq tar file format is to separate UO data from the meta information while still having both inside one file In addition the file format allows you to preview the UO data in a web browser and allows you to include user specific data The iq tar container packs several files into a single tar archive file Files in tar format
6. 2 iint case 19 34 Markers Configuration remote Configuring Configuring softkey Deactivating gs Delta marKets tosca erp tto torri codi MINIMUM dicas Minimum remote control 181 Next minimum SE Next minimum remote control 2 191 Next rU E 97 Next peak remote control 181 Pra E 97 Peak remote Control sss 181 eeler e ped ns ceneytetsacin aa aaa aii 96 Querying position remote 4146 Search settings 2 95 Settings remote 178 State eres ind 09 yz aras iii 95 Table evaluation method 19 34 TIPO arenas 94 MAShift see Midambley Shift 2 tnter to mca 12 Maximizing Windows remote ota oie eee Seen oos 147 Maximum Y axis deve dere eege 57 Measurement channel Creating remote niter Deleting remote AAA Duplicating remote Querying remote Renaming remote Replacing remote sese Measurement time Auto SENGS cic iii ee tite epic t e prt RC dex 7T Measurement types e e M tense heuetaces 10 Frequency eu 25 Measurements Selecting Selecting remote m Starting remote nc Mid1 2 see Midamble Power delta ssussss 12 Midamble Assignment 40 Basics 40 Channel type 38 Common assignment 40 Default assi
7. Activates the coupling of the step size to the span SENSe FREQuency OFFSet Offset This command defines a frequency offset If this value is not O Hz the application assumes that the input signal was frequency shifted outside the application All results of type frequency will be corrected for this shift numerically by the application Note In MSRA mode the setting command is only available for the MSRA Master For MSRA applications only the query command is available Parameters Offset Range 100 GHz to 100 GHz RST 0 Hz Example FREQ OFFS 1GHZ Usage SCPI confirmed Manual operation See Frequency Offset on page 59 Configuring Code Domain Analysis 10 5 2 2 Amplitude and Scaling Settings The following commands are required to configure the amplitude and scaling settings in a remote environment Useful commands for amplitude settings described elsewhere INPut COUPling on page 115 INPut IMPedance on page 116 e SENSe ADJust LEVel on page 141 Remote commands exclusive to amplitude settings DISPlay WINDow lt n gt TRACe lt t gt Y SCALe AUTO ONCE coocccccccccncccncncncncononononannnananans 119 DISPlay WINDow n TRACe t Y SCALe MAXimum eeeseeseeeenennenemeenenns 119 DISPlay WINDow n TRACe t Y SCALe MlINimum eeeeeeeeee eene 120 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe PDIVISION eene 120 DISPlay WINDow n TRACe t
8. Analyzer mode Application lt ChannelType gt Default Channel Name Parameter Spectrum SANALYZER Spectrum 1 Q Analyzer IQ IQ Analyzer Analog Demodulation R amp S FPS K7 ADEM Analog Demod GSM R amp S FPS K10 GSM GSM Noise R amp S FPS K30 NOISE Noise Phase Noise R amp S FPS K40 PNOISE Phase Noise VSA R amp S FPS K70 DDEM VSA 3GPP FDD BTS R amp S FPS K72 BWCD 3G FDD BTS 3GPP FDD UE R amp S FPS K73 MWCD 3G FDD UE TD SCDMA BTS R amp S FPS K76 BTDS TD SCDMA BTS TD SCDMA UE R amp S FPS K77 MTDS TD SCDMA UE cdma2000 BTS R amp S FPS K82 BC2K CDMA2000 BTS cdma2000 MS R amp S FPS K83 MC2K CDMA2000 MS 1xEV DO BTS R amp S FPS K84 BDO 1xEV DO BTS 1xEV DO MS R amp S FPS K85 MDO 1xEV DO MS WLAN R amp S FPS K91 WLAN WLAN LTE R amp S FPS K10x LTE LTE Note the default channel name is also listed in the table If the specified name for a new channel already exists the default name extended by a sequential number is used for the new channel INSTrument REName lt ChannelName1 gt lt ChannelName2 gt This command renames a measurement channel Parameters lt ChannelName1 gt String containing the name of the channel you want to rename lt ChannelName2 gt String containing the new channel name Note that you can not assign an existing channel name to a new channel this will cause an error Example INST REN Spectrum2 Spectrum3 Renames the channel with the name Spectrum2 to Spectrum3 Usage
9. Autosearch Detects channels automatically on the basis of the active predefined channel table Remote command CONFigure CDPower CTABle STATe on page 135 Channel Table Management Channel tables are managed in the Channel Detection dialog box which is displayed when you select the Channel Detection button in the configuration Overview Predefined Tables AAA 70 Selectingd KEEN 70 Creating a New Tables occiso di 70 Eer Table oun reote hr Em eon et robs sen ui p Sc NE 71 COPY T3b l8 oa dura Freitag tienda ree ka LE dE AE RR de Ea cH nee 71 B were E 71 Predefined Tables The list shows all available channel tables and marks the currently used table with a checkmark The currently focused table is highlighted blue Remote command BTS measurements CONFigure CDPower CTABle CATalog on page 134 Selecting a Table Selects the channel table currently focused in the Predefined Tables list and com pares it to the measured signal to detect channels Remote command CONFigure CDPower CTABle SELect on page 135 Creating a New Table Creates a new channel table See chapter 6 2 9 4 Channel Details on page 73 For step by step instructions on creating a new channel table see To define or edit a channel table on page 100 Code Domain Analysis Editing a Table You can edit existing channel table definitions The details of the selected channel are displayed in the Channel Table dialo
10. Code Domain Analysis Restore Scale Window Restores the default scale settings in the currently selected window Frequency Settings Frequency settings for the input signal can be configured via the Frequency dialog box which is displayed when you do one of the following e Select the FREQ key and then the Frequency Config softkey e Select Input Frontend from the Overview and then switch to the Frequency tab Stepsize Frequency Value COMET MEQUON CY E 58 Center Frequency Ee EE 58 EreqUeney ONS E 59 Center frequency Defines the normal center frequency of the signal The allowed range of values for the center frequency depends on the frequency span span gt 0 spanmin 2 S feenter fmax SPAN min 2Z fmax and SPAN pin depend on the instrument and are specified in the data sheet Remote command SENSe FREQuency CENTer on page 117 Center Frequency Stepsize Defines the step size by which the center frequency is increased or decreased when the arrow keys are pressed When you use the rotary knob the center frequency changes in steps of only 1 10 of the Center Frequency Stepsize The step size can be coupled to another value or it can be manually set to a fixed value This setting is available for frequency and time domain measurements Code Domain Analysis Center Sets the step size to the value of the center frequency The used value is indicated in the Value field
11. Note that the PRESET key restores the entire instrument to its default values and thus closes all measurement channels on the R amp S FPS except for the default Spectrum application channel See chapter 6 2 1 Default Settings for Code Domain Analysis on page 47 for details Remote command SYSTem PRESet CHANnel EXECute on page 113 Select Measurement Selects a different measurement to be performed See chapter 3 Measurements and Result Display on page 10 Specifics for The measurement channel may contain several windows for different results Thus the settings indicated in the Overview and configured in the dialog boxes vary depending on the selected window Select an active window from the Specifics for selection list that is displayed in the Overview and in all window specific configuration dialog boxes The Overview and dialog boxes are updated to indicate the settings for the selected window 6 2 3 Data Input and Output Settings The R amp S FPS can analyze signals from different input sources and provide various types of output such as noise or trigger signals E ed TEE 50 QUIPUESQUINOS EE 52 6 2 3 1 Input Source Settings The input source determines which data the R amp S FPS will analyze Code Domain Analysis Input settings can be configured in the Input dialog box Some settings are also available in the Amplitude tab of the Amplitude dialog box e Radio F
12. This command queries the index of a particular display window in the active measure ment channel Note to query the name of a particular window use the LAYout WINDow lt n gt IDENtify query Query parameters lt WindowName gt String containing the name of a window Return values lt WindowIndex gt Index number of the window Usage Query only LAYout REMove WINDow lt WindowName gt This command removes a window from the display in the active measurement channel Parameters lt WindowName gt String containing the name of the window In the default state the name of the window is its index Usage Event Configuring the Result Display LAYout REPLace WINDow lt WindowName gt lt WindowType gt This command replaces the window type for example from Diagram to Result Sum mary of an already existing window in the active measurement channel while keeping its position index and window name To add a new window use the LAYout ADD WINDow command Parameters lt WindowName gt String containing the name of the existing window By default the name of a window is the same as its index To determine the name and index of all active windows in the active measurement channel use the LAYout CATalog WINDow query lt WindowType gt Type of result display you want to use in the existing window See LAYout ADD WINDow on page 148 for a list of availa ble window types Example LAY
13. lleeeeeeeseesseeseeseseeeeeen nenne EE nn nn anne nnne teni nnns 43 6 ne E 45 6 1 Result Display Configuration eeeeeeeeeeeeeeeennnennennnnnn nnne nnn nnne nnns 45 6 2 Code Domain Analysis rre tnnt rnt npn nine cesnnetee cenenneeeecersesececess 46 6 3 Frequency and Time Domain Measurements eee 78 Eu 88 T Evaluation Ranggo AA 88 7 2 Code Domain Analysis Settings eese nnne nnn 89 Fu m 91 re m 92 8 Optimizing and Troubleshooting the Measurement 98 WR deeg E DEE 98 9 How to Perform Measurements in TD SCDMA Applications 99 User Manual 1176 9029 02 03 3 10 10 1 10 2 10 3 10 4 10 5 10 6 10 7 10 8 10 9 10 10 10 11 10 12 10 13 10 14 10 15 11 11 1 11 2 Remote Commands for TD SCDMA Measurements 104 riget se 104 COMMON Suffixes eitis eren trat sio coa kan Ina RE RE es AERE ene ER RE Ru ENS CR X Ra RE ER EE 109 Activating the TD SCDMA Applications eeeeeeeeseeee eee 109 Selecting a Measurement ice iicet ie nuns ie ncn 113 Configuring Code Domain Analysis
14. ActiveFlag e the code class lt CodeClass gt e the channel number lt CodeNo gt e the absolute or relative level Level depending on SENSe CDPower PDISplay on page 143 e the state of the channel lt ActiveFlag gt Retrieving Results For details on these parameters see TRACe lt n gt DATA on page 166 The query returns a maximum of 16 channels Channels that consist of more than one code are returned as one channel Example Consider the following configuration three active channels out of a total of 12 e DPCH 1 16 CC4 7 0 dB e DPCH 2 8 CC3 7 3 dB e DPCH 3 4 CC2 8 0 dB In this example the command would return the following string active channels in bold 4 l 7 0 li 4 2 55 1 0 3 2 Tes l 4 5 956 3 0 4 6 55 8 0 4 7 57 0 0 2 3 8 0 1 4 13 55 8 0 4 14 56 3 0 4 15 55 9 Up 4 l6 SY Sp 0 10 9 3 4 Composite Constellation When the trace data for this evaluation is queried the real and the imaginary branches of the chip constellation at the selected slot are transferred lt Re1 gt lt Im1 gt lt Re2 gt lt Im2 gt lt Re864 gt lt Im864 gt The values are normalized to the square root of the average power at the selected slot 10 9 3 5 Composite EVM RMS For the Composite EVM result display the command returns two values for each slot in the following order lt Slot_0 gt lt MAccuracy_0 gt lt Slot_n gt
15. e Inthe Overview select Analysis and switch to the vertical Marker Config tab Then select the horizontal Search tab User Manual 1176 9029 02 03 95 7 4 4 Markers Analysis Markers Marker Settings Search Range Next Code Domain Settings Trace Marker Gelder 1 Code Domain Power Search Mode for Next Peak 96 Search Mode for Next Peak Selects the search mode for the next peak search Left Determines the next maximum minimum to the left of the current peak Absolute Determines the next maximum minimum to either side of the current peak Right Determines the next maximum minimum to the right of the current peak Remote command chapter 10 10 2 3 Positioning the Marker on page 181 Marker Positioning Functions The following functions set the currently selected marker to the result of a peak search These functions are available as softkeys in the Marker To menu which is displayed when you press the MKR gt key Markers Markers in Code Domain Analysis measurements In Code Domain Analysis measurements the markers are set to individual symbols codes slots or channels depending on the result display Thus you can use the mark ers to identify individual codes for example Search Next PEAK ui iii 97 Search Next Oe UE EE 97 ere Lolo e DEE 97 SS AAA PP aaa Rae H TRIER dt E To CL UCET DAE Ke CE ARR 97 Search Next Peak Sets the selected marker delta marker to the ne
16. lt MAccuracy_n gt The number of slots depends on the capture length 10 9 3 6 Peak Code Domain Error For the Peak Code Domain Error result display the command returns two values for each slot in the following order lt Slot_0 gt lt AbsLevel_0 gt lt Slot_n gt lt AbsLevel_n gt The number of slots depends on the capture length 10 9 3 7 Power vs Slot For the Power vs Slot result display the command returns three values for each slot in the following order lt Slot_0 gt lt Level_0 gt lt Validity_0 gt lt Slot_n gt lt Level_n gt lt Validity_n gt 10 9 3 8 10 9 3 9 10 9 3 10 10 9 3 11 10 9 3 12 Retrieving Results In addition to the power level the source of the power active inactive or alias channel is provided Whether the level is provided as an absolute or relative value depends on SENSe CDPower PDISplay on page 143 Power vs Symbol When the trace data for this evaluation is queried the absolute power of each symbol at the selected slot is transferred The number of symbols depends on the spreading factor see table 4 8 Power vs Time When the trace data for this evaluation is queried the peak power in the defined slot range for each measured subframe is transferred The number of values depends on the number of subframes see No of Subframes on page 82 Result Summary For the Result Summary the command returns 25 values for the selected set slot and
17. 1 Increment 1 RST 0 Example SENS CDP SLOT 3 Manual operation See Slot Number on page 89 Code Domain Analysis Settings Some evaluations provide further settings for the results GONFigure GDPower C ae 142 SENSe CDPower NORMAIiZ nennen nennen nnn nhn rera trn rnnt nnne 143 SENSE CO Power POIS pla m 143 SENSe ICDPOwWer P KE 143 CONFigure CDPower CTABle ORDer CODE MiDamble gt This command selects sorting of the channel table in code order or midamble order Parameters CODE MiDamble gt CODE Channels are sorted in code order MIDamble Channels are sorted in midamble order RST CODE Configuring Code Domain Analysis Example CONF CDP CTAB ORD Sorts the channels in code order Manual operation See Channel Table Sort Order on page 90 SENSe CDPower NORMalize lt State gt If enabled the UO offset is eliminated from the measured signal This is useful to deduct a DC offset to the baseband caused by the DUT thus improving the EVM Note however that for EVM measurements according to standard compensation must be disabled Parameters lt State gt ON OFF RST OFF Example SENS CDP NORM ON Activates the elimination of the l Q offset Manual operation See Compensate IQ Offset on page 90 SENSe CDPower PDISplay Mode This command switches between showing the absolute or relative power This parameter only affects the Code Domain Po
18. ADJust CONFigure HYSTeresis UPPer on page 141 Lower Level Hysteresis When the reference level is adjusted automatically using the Auto Level function the internal attenuators and the preamplifier are also adjusted In order to avoid frequent adaptation due to small changes in the input signal you can define a hysteresis This setting defines a lower threshold the signal must fall below compared to the last mea surement before the reference level is adapted automatically Remote command SENSe ADJust CONFigure HYSTeresis LOWer on page 140 Zoom Functions The zoom functions are only available from the toolbar Single ZOOM dass 77 MURDIS ZOO IV EE 78 RestoteOnginal Display EE 78 R Deactivating Zoom Selection model 78 Single Zoom ER Frequency and Time Domain Measurements A single zoom replaces the current diagram by a new diagram which displays an enlarged extract of the trace This function can be used repetitively until the required details are visible Remote command DISPlay WINDow lt n gt ZOOM STATe on page 155 DISPlay WINDow lt n gt ZOOM AREA on page 154 Multiple Zoom In multiple zoom mode you can enlarge several different areas of the trace simultane ously An overview window indicates the zoom areas in the original trace while the zoomed trace areas are displayed in individual windows The zoom area that corre sponds to the individual zoom display is indicated in the lower right corner betw
19. Manual operation See Impedance on page 51 INPut SELect lt Source gt This command selects the signal source for measurements i e it defines which con nector is used to input data to the R amp S FPS If no additional input options are installed only RF input is supported Parameters lt Source gt RF Radio Frequency RF INPUT connector RST RF Manual operation See Radio Frequency State on page 51 Configuring the Outputs Configuring trigger input output is described in chapter 10 5 3 2 Configuring the Trig ger Output on page 126 Ree et Lei 117 10 5 2 10 5 2 1 Configuring Code Domain Analysis DIAGnostic SERVice NSOurce lt State gt This command turns the 28 V supply of the BNC connector labeled NOISE SOURCE CONTROL on the R amp S FPS on and off Parameters lt State gt ON OFF RST OFF Example DIAG SERV NSO ON Manual operation See Noise Source on page 53 Frontend Configuration The following commands configure frequency amplitude and y axis scaling settings which represent the frontend of the measurement setup e Renee eege iaa 117 e Amplitude and Scaling Settings 0 cccccccceececeseeeceeeeeeeseeeeeeeeeeeaaeesseeeesseaeeesenees 119 Configuring thie AMONIO Eege 122 Frequency SENSE FREQUBINGY EE 117 SENSe FREQuency CENT ep TER coin oe 118 SENSe FREQuency CENTer STEP AUTO ieeie esee eene tnnt inen nin nn LR R
20. SWE COUN 10 Start a new measurement with 10 sweeps and wait for the end INIT WAI f fa a Retrieving results Retrieve the trigger to frame the offset between trigger event and start of first captured frame CALC MARK FUNC CDP BTS RES TER Result 0 00599987013 ms Change the trigger offset to 100 us trigger to frame value TRIG HOLD 100 us Retrieve the trigger to frame value CALC MARK FUNC CDP BTS RES TFR Result 0 00599987013 ms 10 15 5 Measurement 5 Measuring the Composite EVM a Preparing the instrument Reset the instrument RST Activate a TD SCDMA BTS measurement channel named BTSMeasurement INST CRE NEW BTDS BTSMeasurement Set the reference level to 10 dBm DISP TRAC Y SCAL RLEV 10 Set the center frequency to 2 1175 GHz FREQ CENT 2 1175 GHz Configuring the measurement Set the trigger source to the external trigger TRIGGER INPUT connector TRIG SOUR EXT Replace the second measurement window Result Summary by Composite EVM evaluation LAY REPL 2 CEVM Optimize the scaling of the y axis for the Composite EVM measurement DISP WIND2 TRAC Y SCAL AUTO ONCE Zieser Performing the measurement Stops continuous sweep INIT CONT OFF Sets the number of sweeps to be performed to 10 SWE COUN 10 Start a new measurement with 10 sweeps and wait for the end INIT WAI P
21. Table 10 7 Trace results for Relative Code Domain Power measurement R_ Start Stop RBW Freq Abs Rel Deltato Limit an freq freq Hz peak peak peak margin check ge Hz Hz power power power dB result N Hz dBm O 1 1 00000 1 27500 8 50000 1 00000 2 10878 8 05717 7 88279 2 982 0 0000 0000E 0000E 0000E 2336E 7734E 9530E 79953 0 O 007 006 006 009 001 001 0E 00 00 00 001 00 00 00 00 00 00 00 00 00 0 jo JO 2 2 00000 8 50000 7 50000 1 00000 2 10900 8 15854 7 98416 3 084 0 0000 0000E 0000E 0000E 0064E 7211E 9006E 16900 0 0 006 006 006 009 001 001 6E 00 00 00 001 00 00 00 00 00 00 00 00 00 0 jo JO 3 3 00000 7 50000 3 50000 1 00000 2 11398 4 20270 4 02833 5 270 0 0000 0000E 0000E 0000E 7200E 8435E 0231E 56503 0 0 006 006 006 009 001 001 3 00 00 00 00 00 00 00 00 00 00 00 00 0 jo JO Jesse Preparing the instrument Reset the instrument RST Activate a TD SCDMA BTS measurement channel named BTSMeasurement Programming Examples TD SCDMA BTS INST CRE NEW BTDS BTSMeasurement Set the reference level to 10 dBm DISP TRAC Y SCAL RLEV 10 Set the center frequency to 2 1175 GHz FREQ CENT 2 1175 GHz Optimize the scaling of the y axis for the current meas
22. To configure the amplitude settings Amplitude settings can be configured via the AMPT key or in the Amplitude dialog box gt To display the Amplitude dialog box do one of the following e Select Input Frontend from the Overview and then switch to the Amplitude tab e Select the AMPT key and then the Amplitude Config softkey Retarenca RE 55 L Shifting the Display Offset ees aai bnt 55 l TE E 55 L Setting the Reference Level Automatically Auto Level 55 FRE ui UII tied 55 L Attenuation Mode Value tentent tenete tete ttntnte tnra tenete 56 Using Electronic Altenualtilohi oret ten eee rete nent eer 56 Julie c 56 L Preamplifier option B331B324 ee 57 Code Domain Analysis Reference Level Defines the expected maximum reference level Signal levels above this value may not be measured correctly which is indicated by the IF OVLD status display OVLD for digitial baseband input The reference level is also used to scale power diagrams the reference level is then used as the maximum on the y axis Since the hardware of the R amp S FPS is adapted according to this value it is recommen ded that you set the reference level close above the expected maximum signal level to ensure an optimum measurement no compression good signal to noise ratio Remote command DISPlay WINDow lt n gt TRACe lt t gt Y SCALe RLE
23. Y SCALe RLEVel sess 120 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe RLEVel OFF Set cecececceceeteeeeeteneeeeneneees 120 DISPlay WINDow n TRACe t Y SCALe RPOSition seen 121 DISPlay WINDow n TRACe st Y SCALe RVALue essent 121 elle TR ug c 121 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe AUTO ONCE Automatic scaling of the y axis is performed once then switched off again for all traces lt t gt is irrelevant Usage SCPI confirmed Manual operation See Auto Scale Once on page 57 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe MAXimum Value This command defines the maximum value of the y axis for all traces in the selected result display The suffix lt t gt is irrelevant Parameters lt Value gt lt numeric value gt RST depends on the result display The unit and range depend on the result display Example DISP TRAC Y MIN 60 DISP TRAC Y MAX 0 Defines the y axis with a minimum value of 60 and maximum value of 0 Manual operation See Y Maximum Y Minimum on page 57 Configuring Code Domain Analysis DISPlay WINDow lt n gt TRACe lt t gt Y SCALe MINimum Value This command defines the minimum value of the y axis for all traces in the selected result display The suffix lt t gt is irrelevant Parameters lt Value gt lt nume
24. 2Channel Power vs Slot 1 Slot Fig 3 9 Power vs Slot Display for TD SCDMA BTS measurements The slots are displayed according to the detected channels using the following colors e yellow active channel e green channel with alias power power results from channels with a different code class e cyan inactive channel e red selected channel if a channel is made up of more than one code all codes that belong to the channel are red Remote command LAY ADD 1 RIGH PSLot see LAYout ADD WINDow on page 148 TRACe lt n gt DATA on page 166 Power vs Symbol The Power vs Symbol evaluation shows the power measured for each symbol in the selected channel and the selected slot The power is not averaged here Power vs Symbol Symb 0 5 5 Symb Symb 43 Fig 3 10 Power vs Symbol display for TD SCDMA BTS measurements User Manual 1176 9029 02 03 22 R amp S FPS K76 K77 Measurements and Result Display Depending on the spreading factor symbol rate of the channel a slot may contain a minimum of 44 and a maximum of 704 symbols see table 4 8 Remote command LAY ADD 1 RIGH PSYMbol see LAYout ADD WINDow on page 148 TRACe lt n gt DATA on page 166 Result Summary The Result Summary evaluation displays a list of measurement results on the screen For details see chapter 3 1 1 Code Domain Parameters on page 11 2 Result Summary General Results Set 0 Slot Results Slot 0
25. Code Domain Analysis Preamplifier option B22 B24 Input Settings Switches the preamplifier on and off If activated the input signal is amplified by 20 dB If option R amp S FPS B22 is installed the preamplifier is only active below 7 GHz If option R amp S FPS B24 is installed the preamplifier is active for all frequencies Remote command INPut GAIN STATe on page 121 6 2 4 2 Y Axis Scaling The vertical axis scaling is configurable In Code Domain Analysis the y axis usually displays the measured power levels Amplitude Scale Ma Eu 0 0 dB V MLLE 70 0 dB Auto Scale Once Restore Scale iaa 1 Code Domain Power eG RAT YSMITUERMETY ooh vitsaiasivsiaageciavagevactiaviecs e eT T YET CPEET esas e PRU avs Fwd Lean IVa d ebd RELY 57 Auto Scale ONCE EE 57 Restore Scale indow A 58 Y Maximum Y Minimum Defines the amplitude range to be displayed on the y axis of the evaluation diagrams Remote command DISPlay WINDow lt n gt TRACe lt t gt Y SCALe MAXimum on page 119 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe MINimum on page 120 Auto Scale Once Automatically determines the optimal range and reference level position to be dis played for the current measurement settings The display is only set once it is not adapted further if the measurement settings are changed again Remote command DISPlay WINDow lt n gt TRACe lt t gt Y SCALe AUTO ONCE on page 119 6 2 4 3
26. Code Domain Parame ters on page 11 Frequency differences between the transmitter and receiver of more than 1 0 kHz impair synchronization of the Code Domain Power measurement If at all possible the transmitter and the receiver should be synchronized e Check the chip rate error A large chip rate error results in symbol errors and therefore in possible synchronization errors for code domain measurements EVM and Error results are too high Only the channels detected as being active are used to generate the ideal reference signal If a channel is not detected as being active e g on account of low power the difference between the test signal and the reference signal and therefore the compo site EVM and code domain errors are very large Distortions also occur if unassigned codes are wrongly given the status of active chan nel To obtain reliable measurement results select an adequate channel threshold Error Messages Error messages are entered in the error event queue of the status reporting system in the remote control mode and can be queried with the command SYSTem ERRor A short explanation of the device specific error messages for the TD SCDMA applica tions is given below Status bar message Description Sync not found This message is displayed if synchronization is not possible Possible causes are that frequency level scrambling code Invert Q values are set incorrectly or the input signal is inval
27. INIT WAI Starts the measurement and waits for the end of the measure ment Manual operation See Trace Mode on page 92 DISPlay WINDow lt n gt TRACe lt t gt STATe State This command turns a trace on and off 10 10 2 10 10 2 1 Analysis The measurement continues in the background Parameters lt State gt ON OFF 0 1 RST 1 for TRACe1 0 for TRACe 2 to 6 Example DISP TRAC3 ON Usage SCPI confirmed Markers Markers help you analyze your measurement results by determining particular values in the diagram In TD SCDMA applications only 4 markers per window can be config ured for Code Domain Analysis e Individual Marker Seltlll E 178 e General Marker Settings ier reni tcu ence E idad dara 181 e Positioning the Marker cortos erre a nor EXER MER E GRERKT aa 181 Individual Marker Settings CALCulate n MARKer m STATe certet rennen nennen nhanh nnn si Ia REENEN 178 GAL GulateemsMARKOESITSEN odon catala ad a ctetu a dl acia ca dad 178 GAL GulatesmnMARKersmeAOPF a 179 CALC late lt n gt DELTamarker lt m gt STATE nennen nnne neni nan 179 CALCulate lt n gt DELTamarker lt m gt AOFF cccessscccescecceeseecssseeceescecceeseceeseeesenceseeeseceaaes 179 CAL Culatesni gt DEL Tamar ker IA 9 EEN 180 CAL Culate nz DEL Tamarkercmz SREL ative eene enne nnns 180 CAL Culate nz DEL TamarkercmzN eese sn sse naka aana iiir sse rrr sanas 180 CAL
28. Manual Defines a fixed step size for the center frequency Enter the step size in the Value field Remote command SENSe FREQuency CENTer STEP on page 118 Frequency Offset Shifts the displayed frequency range along the x axis by the defined offset This parameter has no effect on the instrument s hardware or on the captured data or on data processing It is simply a manipulation of the final results in which absolute fre quency values are displayed Thus the x axis of a spectrum display is shifted by a constant offset if it shows absolute frequencies but not if it shows frequencies relative to the signal s center frequency A frequency offset can be used to correct the display of a signal that is slightly distorted by the measurement setup for example The allowed values range from 100 GHz to 100 GHz The default setting is O Hz Note In MSRA mode this function is only available for the MSRA Master Remote command SENSe FREQuency OFFSet on page 118 6 2 5 Trigger Settings Trigger settings determine when the input signal is measured Trigger settings can be configured via the TRIG key or in the Trigger dialog box which is displayed when you select the Trigger button in the Overview MiS Ext Trigger 1 Trigger Level External triggers from one of the TRIGGER INPUT OUTPUT connectors on the R amp S FPS are configured in a separate tab of the dialog box Code Domain Analysis Trigger Source T
29. Output Settings dee re deter ie Red Fed Ea dac ga Sates AIR Naai 52 6 244 Frontend RT EE 54 6 241 Amplitude Settings oorr reete ira Ehe edad e Feci te edu 54 E E EE e BEE 57 E ME e Wee EE 58 6 2 5 Trigger SCtuNGS EE 59 6 2 6 Signal Capture Data Acoutston cnn nn 64 6 2 7 Application Data MSRA iii cierre rc ed dd 65 6 2 8 elen EE 66 6 2 9 Channel Detection ld ra cd di 68 6 2 9 1 General Channel Detection Geitngs naar 68 6 2 9 2 Channel Table Management cionado ea 70 6 2 9 3 Channel Table Settings and FUNCTIONS naar nan 71 6 294 Channel Detalls ieri ici ee crece a tt td a 73 CET nl EE 74 6 2 11 Automatic SENOS EE 75 6 2 12 Zoom FUNCION Sui aa a 77 6 2 1 Default Settings for Code Domain Analysis When you activate a TD SCDMA application the first time a set of parameters is passed on from the currently active application e center frequency and frequency offset e reference level and reference level offset e attenuation e signal source and digital UO input settings e input coupling After initial setup the parameters for the measurement channel are stored upon exiting and restored upon re entering the channel Thus you can switch between applications quickly and easily Apart from these settings the following default settings are activated directly after a TD SCDMA application is activated or after a Preset Channel 6 2 2 dd kA Gu Overview Code Domain Analysis The following default setting
30. See External Trigger 1 2 on page 61 See IF Power on page 61 Configuring the Trigger Output The following commands are required to send the trigger signal to one of the variable TRIGGER INPUT OUTPUT connectors OUTPuE TRIGSgersport DIRSGIDI nui cierre teure nr a aa 126 OUTbutTRlGoerzportzLEVel nere ennt n nsns senes nsn nn tn nn nre aia 127 OUTPutcbRIGSersport OT Ye corte e taro ober a oett eet cett ete 127 OUTPut TRIGger port PUESe1MMediate 5 1 1 eoa rre Fer nrbi darin aaa rad ntn 128 OUTPut TRIGger lt port gt PULSe LENGIN ccccssesseceeeseesssseeeceesesseeceeseuesedeeesetseneeseeeenes 128 OUTPut TRIGger lt port gt DIRection Direction This command selects the trigger direction for trigger ports that serve as an input as well as an output Suffix lt port gt Selects the used trigger port 2 TRG AUX Configuring Code Domain Analysis Parameters lt Direction gt INPut Port works as an input OUTPut Port works as an output RST INPut Manual operation See Trigger 2 on page 53 OUTPut TRIGger lt port gt LEVel lt Level gt This command defines the level of the signal generated at the trigger output This command works only if you have selected a user defined output with OUTPut TRIGgereport 0TYPe Suffix port Selects the trigger port to which the output is sent 2 TRG AUX Parameters lt Level gt HIGH TTL signal LOW OV RST LOW Manual operation See Trigger 2
31. See Restore Original Display on page 78 See R Deactivating Zoom Selection mode on page 78 10 8 Starting a Measurement The measurement is started immediately when a TD SCDMA application is activated however you can stop and start a new measurement any time PAB Gai dc Eege 156 INTI sno CONMBBS eccna eaaa A A a 157 NiTiate lt h gt CON nt 157 EINEN E EE 158 INlTiate nz GEOuencer ABOL 158 INITiate n SEQuencerIMMedialte crei enteras leas nn tace ndn a nr cna einn dn nee ceases 159 TN ee RTE 159 INlTlate nz SEOuencerRtrbResbt AL 160 SV STEM SE QUERER dad iaa sels 160 ABORt This command aborts the measurement in the current measurement channel and resets the trigger system To prevent overlapping execution of the subsequent command before the measure ment has been aborted successfully use the OPC or WAI command after ABOR and before the next command For details see the Remote Basics chapter in the R amp S FPS User Manual To abort a sequence of measurements by the Sequencer use the INITiate lt n gt SEQuencer ABORt command Note on blocked remote control programs Starting a Measurement If a sequential command cannot be completed for example because a triggered sweep never receives a trigger the remote control program will never finish and the remote channel to the R amp S FPS is blocked for further commands In this case you must inter rupt processing on the remote channel f
32. See Sync To on page 67 SENSe CDPower STSLot MODE lt Mode gt This command selects the phase reference for synchronization see Sync To on page 67 Parameters lt Mode gt CODE MA CODE The instrument synchronizes to the P CCPCH in slot 0 MA The instrument synchronizes to the midamble of the selected slot RST MA Example CDP STSL MODE CODE Activates channel synchronizing Mode UE only Manual operation See Sync To on page 67 Configuring Code Domain Analysis SENSe CDPower STSLot ROTate lt Mode gt By default the TD SCDMA application determines one phase reference for all midam bles and channels of a data slot If this function is enabled phase rotations between the channels are allowed Each channel gets its own phase reference from the associ ated midamble according to section AA 2 of the standard document 3GPP TS 25 221 If the associated midamble is missing the common phase reference is used for this channel Parameters Mode ON OFF RST OFF Example CDP STSL ROT ON Allows phase rotations between channels Manual operation See Rotate code channel to associated midamble on page 68 SENSe CDPower SULC lt SyncUL gt Defines the code used for synchronization on the UpPTS see Time Reference UE mode on page 67 This command is available for UE mode K77 only Parameters lt SyncUL gt integer For details on available values depending on the scrambling code s
33. The x axis shows the possible codes from 0 to the highest spreading factor Due to the circumstance that the power is regulated from slot to slot the result power may differ between different slots 1 Code Domain Power 1 Clrw 1 Code The codes are displayed using the following colors e yellow detected channels e red selected channel if a channel is made up of more than one code all codes that belong to the channel are red e green no channel detected Remote command LAY ADD 1 RIGH CDPower see LAYout ADD WINDow on page 148 CALC MARK FUNC CDP RES CDP see CALCulate lt n gt MARKer FUNCtion CDPower RESult on page 162 TRACe lt n gt DATA on page 166 Code Domain Error Power The Code Domain Error Power is the difference in power between the measured and an ideally generated reference signal The number of codes corresponds to the spreading factor The y axis shows the error power for each code Since it is an error power as opposed to the measured power both active and inactive channels can be analyzed at a glance mum EP EIN gt SS ee User Manual 1176 9029 02 03 15 R amp S FPS K76 K77 Measurements and Result Display 3 Code Domain Error Power ei Clrw 1 Code Fig 3 3 Code Domain Error Power Display for TD SCDMA BTS measurements The codes are displayed using the following colors e yellow detected channels e red selected channel if a channel is made up of more than one
34. lt StopSlot gt The stop slot may not be lower than the start slot In the UE application stop slots other than 1 require an external trigger The default value is 1 Range 1to7 RST 6 Example POW ACH SLOT STOP 5 Manual operation See Start Slot Stop Slot on page 82 10 7 Configuring the Result Display The following commands are required to configure the screen display in a remote envi ronment The tasks for manual operation are described in chapter 6 1 Result Display Configuration on page 45 e General Window Commandes 146 e Working with Windows in the Display eeeeeeciice eene tena 147 e Zooming into the Display tio cce eed a ze rede ed ea 154 10 7 1 General Window Commands The following commands are required to configure general window layout independent of the application DISPO FORMAR aiiai ai ee deeg 146 DISPlayE WINDBewsns SIZE ciini omite rape eri 147 DISPlay FORMat Format This command determines which tab is displayed Configuring the Result Display Parameters lt Format gt SPLit Displays the MultiView tab with an overview of all active chan nels SINGle Displays the measurement channel that was previously focused RST SING Example DISP FORM SPL DISPlay WINDow lt n gt SIZE Size This command maximizes the size of the selected result display window temporarily To change the size of several windows on the screen permanently use the LAY SPL command s
35. lt WindowType gt Type of measurement window you want to replace another one with See LAYout ADD WINDow on page 148 for a list of availa ble window types Zooming into the Display Using the Single Zoom DISPlay WINDow lt n gt ZOOM AREA coccccconnocononcnonoconnnnnononnnonnnononnnnnnnnnonornnrnnnnnrrnnnnnnnnnnnns 154 DISPlayEWINDOw lt hA ZOOM STA Te ocio AR ciae 155 DISPlay WINDow lt n gt ZOOM AREA lt x1 gt lt y1 gt lt x2 gt lt y2 gt This command defines the zoom area To define a zoom area you first have to turn the zoom on 1 Frequency Sweep iRm EU 1 origin of coordinate system x1 0 y1 0 2 end point of system x2 100 y2 100 3 zoom area e g x1 60 y1 2 30 x2 80 y2 75 Parameters lt x1 gt lt y1 gt Diagram coordinates in of the complete diagram that define lt x2 gt lt y2 gt the zoom area The lower left corner is the origin of coordinate system The upper right corner is the end point of the system Range 0 to 100 Default unit PCT Manual operation See Single Zoom on page 77 Se ee ee User Manual 1176 9029 02 03 154 R amp S FPS K76 K77 Remote Commands for TD SCDMA Measurements WEEN 10 7 3 2 DISPlay WINDow lt n gt ZOOM STATe State This command turns the zoom on and off Parameters lt State gt ON OFF RST OFF Example DISP ZOOM ON Activates the zoom mode Manual operation See Single Zoom on page 77 See Restore O
36. measurement channel named Spectrum 2 Usage Event INSTrument CREate NEW lt ChannelType gt lt ChannelName gt This command adds an additional measurement channel The number of measurement channels you can configure at the same time depends on available memory Parameters lt ChannelType gt Channel type of the new channel For a list of available channel types see INSTrument LIST on page 111 lt ChannelName gt String containing the name of the channel The channel name is displayed as the tab label for the measurement channel Note If the specified name for a new channel already exists the default name extended by a sequential number is used for the new channel see INSTrument LIST on page 111 Example INST CRE SAN Spectrum 2 Adds an additional spectrum display named Spectrum 2 INSTrument CREate REPLace lt ChannelName1 gt lt ChannelType gt lt ChannelName2 gt This command replaces a measurement channel with another one Activating the TD SCDMA Applications Setting parameters lt ChannelName1 gt String containing the name of the measurement channel you want to replace lt ChannelType gt Channel type of the new channel For a list of available channel types see INSTrument LIST on page 111 lt ChannelName2 gt String containing the name of the new channel Note If the specified name for a new channel already exists the default name extended by a sequential number is used
37. on page 53 See Level on page 53 OUTPut TRIGger lt port gt OTYPe lt OutputT ype gt This command selects the type of signal generated at the trigger output Suffix lt port gt Selects the trigger port to which the output is sent 2 TRG AUX Parameters lt OutputType gt DEVice Sends a trigger signal when the R amp S FPS has triggered inter nally TARMed Sends a trigger signal when the trigger is armed and ready for an external trigger event UDEFined Sends a user defined trigger signal For more information see OUTPut TRIGger lt port gt LEVel RST DEVice Manual operation See Output Type on page 53 Configuring Code Domain Analysis OUTPut TRIGger lt port gt PULSe IMMediate This command generates a pulse at the trigger output Suffix lt port gt Selects the trigger port to which the output is sent 2 TRG AUX Usage Event Manual operation See Send Trigger on page 54 OUTPut TRIGger lt port gt PULSe LENGth lt Length gt This command defines the length of the pulse generated at the trigger output Suffix lt port gt Selects the trigger port to which the output is sent 2 TRG AUX Parameters lt Length gt Pulse length in seconds Manual operation See Pulse Length on page 54 10 5 4 Signal Capturing The following commands are required to configure how much and how data is captured from the input signal MSRA operating mode In MSRA operating mode only the MSRA M
38. All on page 76 SENSe ADJust CONFigure DURation Duration In order to determine the ideal reference level the R amp S FPS performs a measurement on the current input data This command defines the length of the measurement if SENSe ADJust CONFigure DURation MODE is set to MANual Parameters Duration Numeric value in seconds Range 0 001 to 16000 0 RST 0 001 Default unit s Configuring Code Domain Analysis Example ADJ CONF DUR MODE MAN Selects manual definition of the measurement length ADJ CONF LEV DUR 5ms Length of the measurement is 5 ms Manual operation See Changing the Automatic Measurement Time Meastime Manual on page 77 SENSe ADJust CONFigure DURation MODE Mode In order to determine the ideal reference level the R amp S FPS performs a measurement on the current input data This command selects the way the R amp S FPS determines the length of the measurement Parameters Mode AUTO The R amp S FPS determines the measurement length automati cally according to the current input data MANual The R amp S FPS uses the measurement length defined by SENSe ADJust CONFigure DURation on page 139 RST AUTO Manual operation See Resetting the Automatic Measurement Time Meastime Auto on page 77 See Changing the Automatic Measurement Time Meastime Manual on page 77 SENSe ADJust CONFigure HYSTeresis LOWer Threshold When the referen
39. CALC DELT2 ON Turns on delta marker 2 Manual operation See Marker State on page 93 See Marker Type on page 94 CALCulate lt n gt DELTamarker lt m gt AOFF This command turns all delta markers off lt m gt is irrelevant Example CALC DELT AOFF Turns all delta markers off Usage Event Analysis CALCulate lt n gt DELTamarker lt m gt X Position This command moves a delta marker to a particular coordinate on the x axis If necessary the command activates the delta marker and positions a reference marker to the peak power Example CALC DELT X Outputs the absolute x value of delta marker 1 Manual operation See X value on page 94 CALCulate lt n gt DELTamarker lt m gt X RELative This command queries the relative position of a delta marker on the x axis If necessary the command activates the delta marker first Return values lt Position gt Position of the delta marker in relation to the reference marker Example CALC DELT3 X REL Outputs the frequency of delta marker 3 relative to marker 1 or relative to the reference position Usage Query only CALCulate lt n gt DELTamarker lt m gt Y This command queries the relative position of a delta marker on the y axis If necessary the command activates the delta marker first To get a valid result you have to perform a complete measurement with synchroniza tion to the end of the measurement before reading out the result
40. CDPower PDISplay on page 143 lt ActiveFlag gt 0 1 Flag to indicate whether a channel is active 1 or not 0 lt CError gt Chip Rate Error in ppm lt CDPAbsolute gt Code domain power absolute or relative to total signal power lt CDPRelative gt data parts lt ChannelType gt 0 2 Type of the channel 0 inactive 1 midamble 2 DPCH lt CodeClass gt lt CodeNo gt lt EVMPeak gt lt EVMRMS gt lt FError gt lt CIQImbal gt lt lQOffset gt lt MAccuracy gt lt MAShift gt lt AMiD1 gt lt AMiD2 gt lt ModType gt lt PCDError gt lt PD1 gt lt PD2 gt lt PData gt lt PMidamble gt lt reserved1 4 gt lt RHO gt lt SF gt Retrieving Results 0 4 Code class of the channel The code class specifies the spread ing factor of the channel 0 spreading factor 1 1 spreading factor 2 2 spreading factor 4 3 spreading factor 8 4 spreading factor 16 1 16 Code number of the channel The number of codes depends on the spreading factor see table 4 2 Maximum value of the EVM Average value of the EVM Frequency Error in Hz UO Imbalance in 1 Q Offset in 96 Composite EVM in 96 0 38400 Midamble shift of the channel dB Power offset between sum power of channels belonging to midamble k only data field 1 2 and power of midamble k Modulation type of the channel 0 invalid for midamble 1 QPSK 2 8PSK 3 16QAM 4 64QAM
41. Configuration remote sees 177 Configuration softkey iriiria 91 Exporting remote edd NEE 173 Mode Mode remote 2 nitet teg 177 Results remote nete ds 165 Transmit ON OFF power mask seen 26 Trigger Configuration remote Configuration softkey External remote ze as vio eR RS ek E riietad aerias riiet Offset Ile EE E Programming example sess A 1 nente 62 125 A EET T EN 11 lte EE 61 External trigger remote A 125 Trigger source e External Free Run ES el Ge U UE User equipment cit rre trenes 7 Units Reference level unica Dre e e et 55 Updating Isesultdisplay d nettes c dris renean axe o on deae Result display remote E Upper Level Elysteresis 5 e terr erret ir rne UpPTS BASICS E ds 35 User Manuals viii testi 5 W lyje dE Window title bar information Windows Adding remote irrita 148 Closing remote 2 eere 150 153 COMMQUITING ME Layout remote Maximizing remote A 147 Querying REMOTE seg eodein tte entro 150 Replacing remote O Splitting remote 147 Types remote 148 X X value Markei riris TET 94 Y Y maximum Y minimum SCAO TE 57 YIG preselector Activating Deactivating sse 52 Activating Deactivating remote
42. M AXimumf PDEAK nennen enn 182 CAL Culate nz M Abker mzM AximumbRlGHt esee nennen ener sse nr nian 182 CAL Culate nz M Abkermmz MiNimum LEET 182 CAL Culate nz M Abkermz MiNimumNENT nennen snnt n aisi ss ana 182 CALCulate n MARKer m MlNimum PEAK cessisset nnne 182 CAL Culate nz M bker mmz MiNimum RI 183 CALCulate lt n gt MARKer lt m gt MAXimum LEFT This command moves a marker to the next lower peak The search includes only measurement values to the left of the current marker posi tion Usage Event Analysis CALCulate lt n gt MARKer lt m gt MAXimum NEXT This command moves a marker to the next lower peak Usage Event Manual operation See Search Next Peak on page 97 CALCulate lt n gt MARKer lt m gt MAXimum PEAK This command moves a marker to the highest level If the marker is not yet active the command first activates the marker Usage Event Manual operation See Peak Search on page 97 CALCulate lt n gt MARKer lt m gt MAXimum RIGHt This command moves a marker to the next lower peak The search includes only measurement values to the right of the current marker posi tion Usage Event CALCulate lt n gt MARKer lt m gt MINimum LEFT This command moves a marker to the next minimum value The search includes only measurement values to the right of the current marker posi tion Usage Event CALCulate lt n gt MARKer lt m gt MINimum NEXT This c
43. MARKer lt m gt STATe on page 178 CALCulate lt n gt DELTamarker lt m gt STATe on page 179 All Markers Off Deactivates all markers in one step Remote command CALCulate lt n gt MARKer lt m gt AOFF on page 179 7 4 2 General Marker Settings General marker settings are defined in the Marker Config tab of the Marker dialog box R amp S9FPS K76 K77 Analysis a x Range Marker Table Code Domain Settings off Trace Analysis Markers Marker Settings Search Marker Marker Table Display Defines how the marker information is displayed On Displays the marker information in a table in a separate area beneath the diagram Off Displays the marker information within the diagram area Auto Default Up to two markers are displayed in the diagram area If more markers are active the marker table is displayed automatically Remote command DISPlay MTABle on page 181 7 4 3 Marker Search Settings Several functions are available to set the marker to a specific position very quickly and easily In order to determine the required marker position searches may be performed The search results can be influenced by special settings These settings are available as softkeys in the Marker To menu or in the Search tab of the Marker dialog box To display this tab do one of the following Press the MKR key then select the Marker Config softkey Then select the hori zontal Search tab
44. Off Selected OA A 93 LE E 93 PU isa 94 Er jor AME 94 Al Markers QI e ea Fe ee eet eet e ei e e o echa dot tre IA 94 Selected Marker Marker name The marker which is currently selected for editing is highlighted orange Remote command Marker selected via suffix m in remote commands Marker State Activates or deactivates the marker in the diagram Remote command CALCulate lt n gt MARKer lt m gt STATe on page 178 CALCulate lt n gt DELTamarker lt m gt STATe on page 179 Markers X value Defines the position of the marker on the x axis channel slot symbol depending on evaluation Remote command CALCulate lt n gt DELTamarker lt m gt X on page 180 CALCulate lt n gt MARKer lt m gt X on page 178 Marker Type Toggles the marker type The type for marker 1 is always Normal the type for delta marker 1 is always Delta These types cannot be changed Note If normal marker 1 is the active marker switching the Mkr Type activates an additional delta marker 1 For any other marker switching the marker type does not activate an additional marker it only switches the type of the selected marker Normal A normal marker indicates the absolute value at the defined position in the diagram Delta A delta marker defines the value of the marker relative to the speci fied reference marker marker 1 by default Remote command CALCulate lt n gt
45. Peak Code Domain Error in dB Power of the data parts over all channels in dB Mean power of both data parts P1 and P2 over all channels in dBm Power of the midamble in dB Placeholder value Currently not used 01 Rho 1 16 Spreading Factor of the channel lt Slot gt lt SYMRate gt lt TrigFrame gt lt Validity gt Example Usage Manual operation Retrieving Results Slot number The range depends on the capture length Symbol rate in kbps Trigger to Frame in ms This value is valid only after successful synchronization to the TD SCDMA signal When using the Free Run trigger mode the command returns a 9 0 inactive channel 1 active channel 2 alias channel In this case the channel consists of more than one code TRAC2 DATA TRACE1 Returns the trace data from trace 1 in window 2 Query only See Bitstream on page 13 See Channel Table on page 13 See Code Domain Power on page 15 See Code Domain Error Power on page 15 See Composite Constellation on page 16 See Composite EVM on page 17 See Mag Error vs Chip on page 18 See Peak Code Domain Error on page 19 See Phase Error vs Chip on page 20 See Power vs Slot on page 21 See Power vs Symbol on page 22 See Result Summary on page 23 See Symbol Constellation on page 23 See Symbol EVM on page 24 See Symbol Magnitude Error on page 24 See Symbol Phase Error on page 25 See Power vs Time on pa
46. REPL WIND 1 MTAB Replaces the result display in window 1 with a marker table LAYout SPLitter lt Index1 gt lt Index2 gt lt Position gt This command changes the position of a splitter and thus controls the size of the win dows on each side of the splitter Compared to the DISPlay WINDow lt n gt SIZE on page 147 command the LAYout SPLitter changes the size of all windows to either side of the splitter per manently it does not just maximize a single window temporarily Note that windows must have a certain minimum size If the position you define con flicts with the minimum size of any of the affected windows the command will not work but does not return an error R amp S FPS K76 K77 Remote Commands for TD SCDMA Measurements y 100 x 100 y 100 1 01 GHz 102 12 dim x 0 y 0 x 100 Fig 10 1 SmartGrid coordinates for remote control of the splitters Parameters lt Index1 gt The index of one window the splitter controls lt Index2 gt The index of a window on the other side of the splitter lt Position gt New vertical or horizontal position of the splitter as a fraction of the screen area without channel and status bar and softkey menu The point of origin x 0 y 0 is in the lower left corner of the screen The end point x 100 y 100 is in the upper right cor ner of the screen See figure 10 1 The direction in which the splitter is moved depends on the screen layout H the win
47. SNR environments For channel synchronization at least one of the channels must be QPSK or 8PSK modulated Midamble The R amp S FPS TD SCDMA application determines the phase refer ence from the midamble of the selected slot With this method the data slots can be phase rotated to each other and a degradation of the EVM results can be avoided Remote command SENSe CDPower STSLot on page 131 UE application SENSe CDPower STSLot MODE on page 131 6 2 9 6 2 9 1 Code Domain Analysis Rotate code channel to associated midamble Not available for Power vs Time measurements By default the R amp S FPSTD SCDMA application determines one phase reference for all midambles and channels of a data slot If this option is enabled phase rotations between the channels are allowed Each channel gets its own phase reference from the associated midamble according to section AA 2 of the standard document 3GPP TS 25 221 If the associated midamble is missing the common phase reference is used for this channel Remote command SENSe CDPower STSLot ROTate on page 132 Channel Detection The channel detection settings determine which channels are found in the input signal e General Channel Detection Gettings sss 68 e Channel Table Managetrigrt uote trt ette e edet d 70 e Channel Table Settings and Functions 00 cccccceccceeseeeeeeeeeeesaeeeeeeeeeseaeeseeneeeeens 71 e Channal Details te ente t
48. Setting only 10 4 Selecting a Measurement INSTrument SELect lt Mode gt This command activates a new measurement channel with the defined channel type or selects an existing measurement channel with the specified name Also see e INSTrument CREate NEW on page 110 Parameters lt Mode gt BTDS TD SCDMA BTS mode R amp S FPS K76 option MTDS TD SCDMA UE mode R amp S FPS K77 option SYSTem PRESet CHANnel EXECute This command restores the default instrument settings in the current channel Use INST SEL to select the channel Example INST Spectrum2 Selects the channel for Spectrum2 SYST PRES CHAN EXEC Restores the factory default settings to the Spectrum2 channel Usage Event Manual operation See Preset Channel on page 50 Selecting a Measurement The following commands are required to define the measurement type in a remote environment For details on available measurements see chapter 3 Measurements and Result Display on page 10 GONFiguire CDPowerMEASUreme nts ooo naani EENE ETa ET aN EENES 113 CONFigure CDPower MEASurement lt Measurement gt This command selects the measurement type for the TD SCDMA BTS application For details on these measurements see chapter 3 2 Frequency and Time Domain Measurements on page 25 Configuring Code Domain Analysis Parameters lt Measurement gt ACLR Adjacent Channel Power CCDF Complementary Cumulative Distribution F
49. Symbol Magnitude Error on page 24 See Symbol Phase Error on page 25 See Diagram on page 32 See List Evaluation on page 33 See Result Summary on page 33 See Marker Peak List on page 34 Table 10 2 lt WindowType gt parameter values for TD SCDMA application Parameter value Window type BITStream Bitstream CCONst Composite Constellation CDPower Code Domain Power CDEPower Code Domain Error Power CEVM Composite EVM CTABle Channel Table LEValuation List evaluation Power vs Time MTABle Marker table PCDerror Peak Code Domain Error PSLot Channel Power vs Slot PSYMbol Power vs Symbol RSUMmary Result Summary SCONst Symbol Constellation SEVM Symbol EVM Configuring the Result Display LAYout CATalog WINDow This command queries the name and index of all active windows in the active mea surement channel from top left to bottom right The result is a comma separated list of values for each window with the syntax lt WindowName_1 gt lt Windowlndex_1 gt lt WindowName_n gt lt Windowlndex_n gt Return values lt WindowName gt string Name of the window In the default state the name of the window is its index Windowlndex numeric value Index of the window Example LAY CAT Result At 2 1 1 Two windows are displayed named 2 at the top or left and 1 at the bottom or right Usage Query only LAYout IDENtify WINDow lt WindowName gt
50. are abbreviated as R amp S FPS K76 K77 R amp S FPS K76 K77 Contents E Lco 5 1 1 Documentation OverVie Wo rre 5 1 2 Typographical CONVeNtIONS 2 iiss iccccciesseccecciessoceeceeessccectvessecceeveassaeeceesseceeceeessceeeeveessaae 6 2 Welcome to the TD SCDMA Applications 7 2 4 Starting the TD SCDMA Appltcatton ek EEEEEE REENEN KEEN 7 2 2 Understanding the Display Information c cccceecceseeeeeeeeeeeeeeeeeeeeeeeeeeeneeeeeeeneeeeenees 8 3 Measurements and Result Display eese 10 3 1 Code Domain Analysis cesses nennen nnne nennen nnne nn nnns 10 3 2 Frequency and Time Domain Measurements eene 25 4 Measurement BaSiGS coccion 35 4 1 Short Introduction to TD SCDMA cccceeecessseeeeeeeeeeeeeeenseeeeeeeenaeeeeeeeeeseeeeeeeneneeeeeees 35 4 2 Frames Subframes and SlotS oonccccccocnnnnccccocononnncnonononnnnconcnnnonnrnronnnnn nan rrnnnnnnananenns 35 4 3 Channels and Codes rina taii NEEVA rii ERETO ANARKEN ta da Eso SEENEN 37 4 4 Data Fields and Midambles eeeeeeeeeeeeeeeeeeeeeeneennnnnen nennen nennen 40 4 5 CDA Measurements in MSRA Operating Mode eene 41 5 IQ Data Import and Export sseeeeeseeeeeeeeeneeennnn nnn 43 5 4 Import Export Functions
51. as the I Q Analyzer or optional applications Note that the I Q data must have a specific format as described in the R amp S FPS l Q Analyzer and UO Input User Manual Remote command MMEMory LOAD 1Q STATe on page 185 Export Opens a submenu to configure data export UO Export Export Opens a file selection dialog box to select an export file to which the IQ data will be stored This function is only available in single sweep mode and only in applications that process UO data such as the I Q Analyzer or optional applications Note Secure user mode In secure user mode settings that are to be stored on the instrument are stored to vol atile memory which is restricted to 256 MB Thus a Memory full error may occur although the hard disk indicates that storage space is still available To store data permanently select an external storage location such as a USB memory device For details see Protecting Data Using the Secure User Mode in the Data Manage ment section of the R amp S FPS User Manual Remote command MMEMory STORe lt n gt 1Q STATe on page 185 MMEMory STORe lt n gt 1IQ COMMent on page 185 Result Display Configuration 6 Configuration The TD SCDMA applications provide several different measurements for signals according to the TD SCDMA application The main and default measurement is Code Domain Analysis In addition to the code domain power measurements specified by the TD SCDMA standard the TD SCD
52. box select the required measurement The selected measurement is activated with the default settings for TD SCDMA mode immediately 3 If necessary adapt the settings as described for the individual measurements in the R amp S FPS User Manual 4 Select the Display Config button and select the evaluation methods that are of interest to you Arrange them on the display to suit your preferences 5 Exit the SmartGrid mode and select the Overview softkey to display the Over view again 6 Select the Analysis button in the Overview to make use of the advanced analy sis functions in the result displays e Configure a trace to display the average over a series of sweeps if necessary increase the Sweep Count in the Sweep settings e Configure markers and delta markers to determine deviations and offsets within the evaluated signal e Use special marker functions to calculate noise or a peak list e Configure a limit check to detect excessive deviations 7 Optionally export the trace data of the graphical evaluation results to a file a Inthe Traces tab of the Analysis dialog box switch to the Trace Export tab b Select Export Trace to ASCII File c Define a file name and storage location and select OK To select the application data for MSRA measurements In multi standard radio analysis you can analyze the data captured by the MSRA Mas ter in the TD SCDMA BTS application Assuming you have detect
53. can be unpacked using standard archive tools see http en wikipedia org wiki Comparison of file archivers available for most operating systems The advantage of tar files is that the archived files inside the tar file are not changed not com pressed and thus it is possible to read the UO data directly within the archive without the need to unpack untar the tar file first Contained files An iq tar file must contain the following files e Q parameter XML file e g xyz xml Contains meta information about the l Q data e g sample rate The filename can be defined freely but there must be only one single UO parameter XML file inside an ig tar file e Q data binary file e g xyz complex f10oat32 Contains the binary l Q data of all channels There must be only one single UO data binary file inside an iq tar file Optionally an iq tar file can contain the following file e Q preview XSLT file e g open IqTar xml file in web browser xslt Contains a stylesheet to display the UO parameter XML file and a preview of the UO data in a web browser A sample stylesheet is available at http www rohde schwarz com file open IqTar xml file in web browser xslt UO Parameter XML File Specification The content of the UO parameter XML file must comply with the XML schema RsIqTar xsd available at http www rohde schwarz com file RsIqTar xsd In particular the order of the XML elements must be respected i e iq tar uses
54. code all codes that belong to the channel are red e green no channel detected Remote command LAY ADD 1 RIGH CDEPower see LAYout ADD WINDow on page 148 TRACe lt n gt DATA on page 166 Composite Constellation In the Composite Constellation result display the constellation points of the 864 chips are displayed for the specified slot This data is determined inside the DSP even before the channel search Thus it is not possible to assign constellation points to channels The constellation points are displayed normalized with respect to the total power Note The red circle indicates the value 1 User Manual 1176 9029 02 03 16 R amp S FPS K76 K77 Measurements and Result Display 1 Composite Constellation 1 Clrw Fig 3 4 Composite Constellation display for TD SCDMA BTS measurements Remote command LAY ADD 1 RIGH CCONst see LAYout ADD WINDow on page 148 TRACe lt n gt DATA on page 166 Composite EVM The Composite EVM evaluation determines the error vector magnitude EVM over the total signal The EVM is the root of the ratio of the mean error power to the power of an ideally generated reference signal To calculate the mean error power the root mean square average of the real and imaginary parts of the signal is used The EVM is shown in This evaluation is useful to determine the modulation accuracy 4 Composite EVM 1 Slot Fig 3 5 CompositE EVM display for TD SCDMA BTS m
55. confirmed Manual operation See Preamplifier option B22 B24 on page 57 Configuring Code Domain Analysis 10 5 2 3 Configuring the Attenuation INS TEE cocida SEENEN aaa 122 INPutATTenaalton AUTO 00 ai 122 INPUEEA Tous diia 122 Danes E Bu d a ada 123 HESE EE eeh 123 INPut ATTenuation lt Attenuation gt This command defines the total attenuation for RF input If an electronic attenuator is available and active the command defines a mechanical attenuation see INPut EATT STATe on page 123 If you set the attenuation manually it is no longer coupled to the reference level but the reference level is coupled to the attenuation Thus if the current reference level is not compatible with an attenuation that has been set manually the command also adjusts the reference level Parameters lt Attenuation gt Range see data sheet Increment 5dB RST 10 dB AUTO is set to ON Example INP ATT 30dB Defines a 30 dB attenuation and decouples the attenuation from the reference level Usage SCPI confirmed Manual operation See Attenuation Mode Value on page 56 INPut ATTenuation AUTO lt State gt This command couples or decouples the attenuation to the reference level Thus when the reference level is changed the R amp S FPS determines the signal level for optimal internal data processing and sets the required attenuation accordingly Parameters lt State gt ON OFF 0 1 RST 1 Example INP ATT AUTO ON Cou
56. e Documentation CD ROM with Getting Started User Manuals for base unit and firmware applications Service Manual Release Notes Data sheet and product brochures Online Help The Online Help is embedded in the instrument s firmware lt offers quick context sen sitive access to the complete information needed for operation and programming Online help is available using the Y icon on the toolbar of the R amp S FPS Getting Started This manual is delivered with the instrument in printed form and in PDF format on the CD ROM It provides the information needed to set up and start working with the instrument Basic operations and handling are described Safety information is also included The Getting Started manual in various languages is also available for download from the Rohde amp Schwarz website on the R amp S FPS product page at http www rohde schwarz com product FPS html User Manuals User manuals are provided for the base unit and each additional firmware application The user manuals are available in PDF format in printable form on the Documenta tion CD ROM delivered with the instrument In the user manuals all instrument func tions are described in detail Furthermore they provide a complete description of the remote control commands with programming examples The user manual for the base unit provides basic information on operating the R amp S FPS in general and the Spectrum application in p
57. gt is irrelevant Parameters lt Position gt Position of the analysis line in seconds The position must lie within the measurement time of the MSRA measurement Default unit s CAL Culate lt n gt MSRA WINDow lt n gt IVAL This command queries the analysis interval for the window specified by the WINDow suffix lt n gt the CALC suffix is irrelevant This command is only available in application measurement channels not the MSRA View or MSRA Master Return values lt IntStart gt Start value of the analysis interval in seconds Default unit s lt IntStop gt Stop value of the analysis interval in seconds Usage Query only INITiate lt n gt REFResh This function is only available if the Sequencer is deactivated SYSTem SEQuencer SYST SEQ OFF and only for applications in MSRA mode not the MSRA Master The data in the capture buffer is re evaluated by the currently active application only The results for any other applications remain unchanged The suffix lt n gt is irrelevant Example SYST SEQ OFF Deactivates the scheduler NIT CONT OFF witches to single sweep mode NIT WAI tarts a new data measurement and waits for the end of the eep NST SEL IQ ANALYZER elects the IQ Analyzer channel NIT REFR Refreshes the display for the UO Analyzer channel H HANH Wa H Usage Event Manual operation See Refresh on page 75 Status Registers SENSe MSRA CAPTure OFFSet Of
58. interval or not e orange AL the line lies within the interval e white AL the line lies within the interval but is not displayed hidden e no AL the line lies outside the interval MSRA View MSRA Mas TD SCDMA BTS Ref Level 0 00 dBm Freq 1 0GHz Channel 1 16 Code Power Att 10dB Slot Oof6 SymbRate 1 1 Code Domain Power 1 Cirw er vs Symbol Int ana I Anal 5 Interval 1 181 ms 1 896 E Analysis Interva Code 1 code Code l6 Symb 0 2 Symbol EVM For details on the MSRA operating mode see the R amp S FPS MSRA User Manual User Manual 1176 9029 02 03 42 Import Export Functions 5 1 Q Data Import and Export Baseband signals mostly occur as so called complex baseband signals i e a signal representation that consists of two channels the in phase lI and the quadrature Q channel Such signals are referred to as UO signals UO signals are useful because the specific RF or IF frequencies are not needed The complete modulation information and even distortion that originates from the RF IF or baseband domains can be ana lyzed in the UO baseband Importing and exporting UO signals is useful for various applications e Generating and saving UO signals in an RF or baseband signal generator or in external software tools to analyze them with the R amp S FPS later e Capturing and saving l Q signals with an RF or baseband signal analyzer to ana lyze them with the R amp S FPS or an external software tool later As oppo
59. lt ThresholdLevel gt This command defines the minimum power that a single channel must have compared to the total signal in order to be regarded as an active channel Channels below the specified threshold are regarded as inactive Parameters lt ThresholdLevel gt Range 100 dB to 0 dB RST 40 dB Example SENS CDP ICTR 100 Manual operation See Inactive Channel Threshold on page 69 SENSe CDPower MMAX lt ModType gt This command defines the highest modulation to be considered in the automatic chan nel search In low SNR environments it may be necessary to limit the channel search to lower modulations than 64QAM 10 5 6 2 Configuring Code Domain Analysis Parameters lt ModType gt QPSK Consider QPSK modulation only PSK8 Consider QPSK and 8PSK modulation QAM16 Consider QPSK 8PSK and 16QAM modulation QAM64 Consider QPSK 8PSK 16QAM and 64QAM modulation RST QAM64 Example SENS CDP MMAX PSK8 Assume QPSK and 8PSK modulations only for the automatic channel search Manual operation See Max Modulation on page 69 Managing Channel Tables GONFigure GDPower CTABle CAT KE 134 CONFigtire CD Power EABleOOBY 1 22 2 parue sos tapa eite tope tace e da read 135 CONFigure cDPower C TABIeDELele gegen cnet o derer tee let eer nemen 135 GONFigure CDPower CTABle SELectl 1 arci tepeest etc tbe Eds a 135 GONFigure GDPower C TABle STATe comica iria 135 CONFigure CDPower C
60. marked with dashes in the Channel Type SymRate and Modulation columns For details on the displayed results see table 3 2 Remote command LAY ADD 1 RIGH CTABle see LAYout ADD WINDow on page 148 TRACe lt n gt DATA on page 166 Channel Table Configuration Channel Table You can configure which parameters are displayed in the Channel Table by selecting the table header A Table Configuration dialog box is displayed in which you can select the columns to be displayed Columns to be displayed Channel Type Power dB Symbol Rate Mid1 Modulation Mid2 Power dBm L Show Inactive Channels By default only active channels are displayed In order to display all channels includ ing the inactive ones enable the Show Inactive Channels option For details on the displayed results see table 3 2 User Manual 1176 9029 02 03 14 R amp S FPS K76 K77 Measurements and Result Display EEN Code Domain Power The Code Domain Power evaluation shows the power of all possible codes in the selected slot in the total signal Since channel detection is based on a power threshold see chapter 4 3 Channels and Codes on page 37 it is important that all codes have a similar power level no more than 1 5 dB difference to the average power in the slot Thus the scaling of the code domain power is relative to the average power of the data parts in the specified slot in the total signal by default
61. numbers in the definite length block format In the Spectrum application the format setting REAL is used for the binary transmission of trace data For UO data 8 bytes per sample are returned for this format set ting RST ASCII Example FORM REAL 32 Usage SCPI confirmed Retrieving Results TRACe lt n gt DATA lt ResultType gt This command returns the trace data Depending on the evaluation the trace data for mat varies The data format depends on FORMat DATA For details see chapter 10 9 3 Measurement Results for TRACe lt n gt DATA TRACE lt n gt on page 169 Query parameters lt ResultType gt Selects the type of result to be returned TRACE1 TRACE4 Returns the trace data for the corresponding trace as a comma separated list of values This data consists of some or all of the result parameters described below depending on the result type For details see chapter 10 9 3 Measurement Results for TRACe lt n gt DATA TRACE lt n gt on page 169 LIST For CDA measurements For RF measurements Returns the results of the peak list evaluation for Spurious Emis sion and Spectrum Emission Mask measurements For details see table 10 3 Return values lt AbsLevel gt dBm or lt RelLevel gt Absolute level of the channel at the selected channel slot or Relative level of the channel at the selected channel slot refer enced to CPICH or total power Depending on SENSe
62. numeric suffix in the optional keyword DISPlay WINDow lt 1 4 gt ZOOM STATe DISPlay ZOOM STATe ON enables the zoom in window 1 no suffix DISPlay WINDow4 ZOOM STATe ON enables the zoom in window 4 Introduction 10 1 5 Alternative Keywords A vertical stroke indicates alternatives for a specific keyword You can use both key words to the same effect Example SENSe BANDwidth BWIDth RESolution In the short form without optional keywords BAND 1MHZ would have the same effect as BWID 1MHZ 10 1 6 SCPI Parameters Many commands feature one or more parameters If a command supports more than one parameter these are separated by a comma Example LAYout ADD WINDow Spectrum LEFT MTABle Parameters may have different forms of values e UMSS ni VIE 107 e BODIES 108 e Charactef D E 108 e Character EEN 109 e tee D EE 109 10 1 6 1 Numeric Values Numeric values can be entered in any form i e with sign decimal point or exponent In case of physical quantities you can also add the unit If the unit is missing the com mand uses the basic unit Example with unit SENSe FREQuency CENTer 1GHZ without unit SENSe FREQuency CENTer 1E9 would also set a frequency of 1 GHz Values exceeding the resolution of the instrument are rounded up or down If the number you have entered is not supported e g in case of discrete steps the command returns an error Instead
63. of a number you can also set numeric values with a text parameter in special cases e MIN MAX Defines the minimum or maximum numeric value that is supported e DEF Defines the default value 10 1 6 2 10 1 6 3 Introduction e UP DOWN Increases or decreases the numeric value by one step The step size depends on the setting In some cases you can customize the step size with a corresponding command Querying numeric values When you query numeric values the system returns a number In case of physical quantities it applies the basic unit e g Hz in case of frequencies The number of dig its after the decimal point depends on the type of numeric value Example Setting SENSe FREQuency CENTer 1GHZ Query SENSe FREQuency CENTer would return 1E9 In some cases numeric values may be returned as text e INENINE Infinity or negative infinity Represents the numeric values 9 9E37 or 9 9E37 e NAN Not a number Represents the numeric value 9 91E37 NAN is returned in case of errors Boolean Boolean parameters represent two states The ON state logically true is represen ted by ON or a numeric value 1 The OFF state logically untrue is represented by OFF or the numeric value 0 Querying boolean parameters When you query boolean parameters the system returns either the value 1 ON or the value 0 OFF Example Setting DISPlay WINDow ZOOM STATe ON Query DISPlay WIN
64. on page 145 SENSe POWer ACHannel SLOT STOP on page 146 Auto Level 8 Time Adapting the Measurement to the Current Signal Automatically adjusts the reference level and the trigger offset to subframe start to their optimum levels for the current signal This prevents overloading the R amp S FPS When this function is activated current measurements are aborted and resumed after the automatic level detection is finished Remote command SENSe POWer ACHannel AUTO LTIMe on page 145 6 3 4 Spectrum Emission Mask The Spectrum Emission Mask measurement determines the power of the TD SCDMA signal in defined offsets from the carrier and compares the power values with a spec tral mask specified by TD SCDMA For further details about the Spectrum Emission Mask measurements refer to Spec trum Emission Mask Measurement in the R amp S FPS User Manual The TD SCDMA applications perform the SEM measurement as in the Spectrum appli cation with the following settings Table 6 4 Predefined settings for TD SCDMA SEM measurements Span 4 MHz Number of ranges 9 Fast SEM ON Number of power classes 1 Channel bandwidth 1 28 MHz Power reference type Channel power Detector RMS Frequency and Time Domain Measurements O Changing the RBW and the VBW is restricted due to the definition of the limits by the standard To restore adapted measurement parameters the following parameter
65. point indicates the time after which subsequent slots are available for downlink again The system is informed about the current location of the switching point by higher layers Frames Subframes and Slots Frame 10 ms M gt Subframe 1a Subframe 1b Bo I EE I ee Time slot 0 675 ms TT T __ ee TSO TS1 TS2 TS3 TS4 TS5 TS6 DL UL UL UL DL DL DL DwPTS UpPTS 75 us Dei 125 us Switching point interval 75 us Fig 4 1 TD SCDMA signal structure Synchronization The individual channels in the input signal need to be synchronized to detect timing off sets in the slot spacings To do so either slot 0 BTS mode or slot 1 UE mode or the Downlink Pilot Time Slot DwPTS or Uplink Pilot Time Slot UpPTS can be used In UE mode if the UpPTS is used for synchronization you must define the SYNC UL code to be used This code depends on the used scrambling code as indicated in the following table Table 4 1 Possible SYNC UL codes depending on scrambling code Code Group Scrambling Code Sync UL Code Group 1 0to3 0to7 Group 2 4to7 8to 15 Group 32 124 to 127 248 to 255 R amp S FPS K76 K77 Measurement Basics 4 3 Channels and Codes Within each time slot up to 16 code channels may be transmitted Each channel is spread over one to 16 codes also referred to as channelization codes depending on the code class of the channel The code class specifies the spr
66. rate of the channel a slot may contain a minimum of 44 and a maximum of 704 symbols Depending on the modulation type a symbol consists of 2 to 6 bits see table 4 8 TIP Select a specific symbol using the MKR key while the display is focused If you enter a number the marker jumps to the selected symbol which is highlighted by a blue circle Remote command LAY ADD 1 RIGH BITS see LAYout ADD WINDow on page 148 TRACe lt n gt DATA on page 166 Channel Table The Channel Table evaluation displays the detected channels and the results of the code domain power measurement The measurement evaluates the total signal over the selected slot The Channel Table can contain a maximum of 16 entries which cor responds to the 16 codes that can be assigned for a spreading factor of 16 User Manual 1176 9029 02 03 13 R amp S FPS K76 K77 Measurements and Result Display The sort order of the table is configurable see Channel Table Sort Order on page 90 either by code number starting with midambles then control channels then data channels or by midamble where all channels are listed below the midamble they belong to SymRate Power MA AMIDI AMID db dB ksps geed dBm shift dB Fig 3 2 Channel Table display for TD SCDMA BTS measurements By default only active channels are included in the display to include inactive chan nels see Channel Table Configuration on page 14 Inactive channels are
67. reasons Invalid frequency Invalid level Invalid scrambling code Invalid max number of MA shift cell Invalid values for INVERT Q Invalid signal at input Status Registers Bit Definition 2to 14 Not used 15 This bit is always O STATus QUEStionable S d Te ETC KEE 189 STATus QUEStionable SYNC CONDItION srs nano nanonanno nnne nnne nnns 189 STATUS QUEStORAblE S Y NE ENAB S E 189 STATUS QUEStionable S YNC N TRANS MON DEE 190 SGTATusOUEGponable GchNC PD Ransiton nnne 190 STATus QUEStionable SYNC EVENt lt ChannelName gt This command reads out the EVEN section of the status register The command also deletes the contents of the EVEN section Query parameters lt ChannelName gt String containing the name of the channel The parameter is optional If you omit it the command works for the currently active channel Usage Query only STATus QUEStionable SYNC CONDition lt ChannelName gt This command reads out the CONDition section of the status register The command does not delete the contents of the EVENt section Query parameters lt ChannelName gt String containing the name of the channel The parameter is optional If you omit it the command works for the currently active channel Usage Query only STATus QUEStionable SYNC ENABle lt BitDefinition gt lt ChannelName gt This command controls the ENABle part of a register The ENABle part allows true conditions in the EVEN
68. setting and for querying parameters If a command can be used for setting or querying only or if it initiates an event the usage is stated explicitely Parameter usage If not specified otherwise a parameter can be used to set a value and it is the result of a query Parameters required only for setting are indicated as Setting parameters Parameters required only to refine a query are indicated as Query parameters Parameters that are only returned as the result of a query are indicated as Return values e Conformity Commands that are taken from the SCPI standard are indicated as SCPI con firmed All commands used by the R amp S FPS follow the SCPI syntax rules e Asynchronous commands A command which does not automatically finish executing before the next com mand starts executing overlapping command is indicated as an Asynchronous command e Reset values RST Default parameter values that are used directly after resetting the instrument RST command are indicated as RST values if available e Default unit This is the unit used for numeric values if no other unit is provided with the parame ter e Manual operation If the result of a remote command can also be achieved in manual operation a link to the description is inserted User Manual 1176 9029 02 03 105 Introduction 10 1 2 Long and Short Form The keywords have a long and a short form You can use either the long or the short form but no other abbreviati
69. the Sequencer icon E from the toolbar b Set the Sequencer state to OFF c Press the RUN SINGLE key To define or edit a channel table Channel tables contain a list of channels to be detected and their specific parameters You can create user defined and edit pre defined channel tables 1 Select the Channel Detection softkey from the main Code Domain Analyzer menu to open the Channel Detection dialog box 2 To define a new channel table select the New button next to the Predefined Tables list To edit an existing channel table a Select the existing channel table in the Predefined Tables list b Select the Edit button next to the Predefined Tables list 3 In the Channel Table dialog box define a name and optionally a comment that describes the channel table The comment is displayed when you set the focus on the table in the Predefined Tables list 4 Define the maximum number of users MA Shifts Cell to be used for the channel table 5 Define the channels to be detected using one of the following methods Select the Measure Table button to create a table that consists of the channels detected in the currently measured signal Or a Select the Add Channel button to insert a row for a new channel below the currently selected row in the channel table b Define the channel specifications required for detection 6 Select the Save Table button to store the channel table The table is sto
70. the current marker posi tion Usage Event 10 11 Importing and Exporting UO Data and Results For details on importing and exporting UO data see chapter 5 1 Q Data Import and Export on page 43 MMEMOory LOADNO S TAT VE 185 MMEMon STObRe cnz JO COMMent cee ae eee ea cease eceeteceseeeeeeeeeeeeeseeeeeeeeeeeaanaea 185 MMEMON STORE IO STA o orita A ed ce ara bao 185 Importing and Exporting UO Data and Results MMEMory LOAD IQ STATe 1 lt FileName gt This command restores l Q data from a file The file extension is iq tar Parameters lt FileName gt String containing the path and name of the source file Example MMEM LOAD IQ STAT 1 C R_S Instr user data ig tar Loads IQ data from the specified file Usage Setting only Manual operation See UO Import on page 44 MMEMory STORe n IQ COMMent Comment This command adds a comment to a file that contains UO data The suffix n is irrelevant Parameters Comment String containing the comment Example MMEM STOR IQ COMM Device test 1b Creates a description for the export file MMEM STOR IQ STAT 1 C R_S Instr user data ig tar Stores UO data and the comment to the specified file Manual operation See UO Export on page 44 MMEMory STORe lt n gt 1Q STATe 1 lt FileName gt This command writes the captured UO data to a file The suffix n is irrelevant The file extension is iq tar By default the contents of the f
71. the signal path Manual operation See Using Electronic Attenuation on page 56 Configuring Triggered Measurements The following commands are required to configure a triggered measurement in a remote environment The tasks for manual operation are described in chapter 6 2 5 Trigger Settings on page 59 Configuring Code Domain Analysis 10 5 3 1 The OPC command should be used after commands that retrieve data so that subse quent commands to change the selected trigger source are held off until after the sweep is completed and the data has been returned e Configuring the Triggering Conditions c cccccssssssecesssssseceessseseeeeeessneeeeeesesees 124 e Configuring the Trigger OUIpUt coire a a aias 126 Configuring the Triggering Conditions TRIGger SEQuence HOLBoff TIME oreet aita ce teo tenere renes 124 TRIGSger SEQuence IEPowerlHOLDDofF ttti e ret tene perte SCENE ebe 124 TRIGger SEQuence IFPower HYSTeresis eese enne nennen 125 TRIGger SEQuenceJ LEVel EXTernal port cesses 125 TRIGSer SEQuence STOP E 125 TRIGger SEQueliceS OD RGB aa eee perro Ad da 126 TRIGger SEQuence HOLDoff TIME lt Offset gt Defines the time offset between the trigger event and the start of the measurement Parameters Offset RST 0s Example TRIG HOLD 500us Manual operation See Trigger Offset on page 62 mM mu gt TRIGger SEQue
72. value is the peak power of the reference range in the specified sub block OBANdwidth OBWidth Occupied bandwidth Returns the occupied bandwidth in Hz Usage Query only Retrieving Results Manual operation See Power on page 28 See Ch Power ACLR on page 28 See Spectrum Emission Mask on page 29 See Occupied Bandwidth on page 30 CAL Culate lt n gt MARKer lt m gt Y This command queries the position of a marker on the y axis If necessary the command activates the marker first To get a valid result you have to perform a complete measurement with synchroniza tion to the end of the measurement before reading out the result This is only possible for single measurement mode See also INITiate lt n gt CONTinuous on page 157 Return values lt Result gt Result at the marker position Example INIT CONT OFF Switches to single measurement mode CALC MARK2 ON Switches marker 2 INIT WAI Starts a measurement and waits for the end CALC MARK2 Y Outputs the measured value of marker 2 Usage Query only Manual operation See Marker Table on page 19 See Marker Peak List on page 34 CALCulate lt n gt STATistics RESult lt t gt lt ResultType gt This command queries the results of a CCDF or ADP measurement for a specific trace lt n gt is irrelevant Parameters lt ResultType gt MEAN Average RMS power in dBm measured during the measure ment time PEAK Peak power in dBm measured d
73. 09688854 1 000000000 8 000000000 0 000000000 7 348078156E 001 7 217211151 001 1 000000000 L sl Select the external frequency from the REF INPUT 1 20 MHZ connector as a reference ROSC SOUR EXT10 Query the carrier frequency error CALC MARK FUNC CDP BTS RES FERR Result 0 1 Hz Table 10 8 Trace results for Relative Code Domain Power measurement Code class Channel no Abs power level Rel power level Timing offset dBm chips 8 000000000 0 000000000 4 319848537 3 011176586 0 000000000 2 000000000 1 000000000 4 318360806 3 009688854 1 000000000 8 000000000 0 000000000 7 348078156E 7 217211151E 1 000000000 001 001 10 15 4 Measurement 4 Triggered Measurement of Relative Code Domain Power ff5555555 Preparing the instrument Reset the instrument RST Activate a TD SCDMA BTS measurement channel named BTSMeasurement INST CRE NEW BTDS BTSMeasurement Set the reference level to 10 dBm DISP TRAC Y SCAL RLEV 10 Set the center frequency to 2 1175 GHz FREQ CENT 2 1175 GHz a Configuring the measurement Set the trigger source to the external trigger TRIGGER INPUT connector TRIG SOUR EXT Optimize the scaling of the y axis for the current measurement DISP TRAC Y SCAL AUTO ONCE Programming Examples TD SCDMA BTS Stops continuous sweep INIT CONT OFF Sets the number of sweeps to be performed to 10
74. 148 for a list of availa ble window types Return values lt NewWindowName gt When adding a new window the command returns its name by default the same as its number as a result Example LAY WIND1 ADD LEFT MTAB Result 2 Adds a new window named 2 with a marker table to the left of window 1 Usage Query only LAYout WINDow lt n gt IDENtify This command queries the name of a particular display window indicated by the lt n gt suffix in the active measurement channel Note to query the index of a particular window use the LAYout IDENtifyl WINDow command Return values lt WindowName gt String containing the name of a window In the default state the name of the window is its index Usage Query only LAYout WINDow lt n gt REMove This command removes the window specified by the suffix lt n gt from the display in the active measurement channel The result of this command is identical to the LAYout REMove NINDow command Usage Event R amp S FPS K76 K77 Remote Commands for TD SCDMA Measurements WEEN 10 7 3 10 7 3 1 LAYout WINDow lt n gt REPLace lt WindowType gt This command changes the window type of an existing window specified by the suffix lt n gt in the active measurement channel The result of this command is identical to the LAYout REPLace WINDow com mand To add a new window use the LAYout NINDow lt n gt ADD command Parameters
75. 2 Show DwPTS Results BTS mode Displays additional information on the Downlink Pilot Time Slot DWPTS see also chapter 4 2 Frames Subframes and Slots on page 35 in the Result Summary Remote command SENSe CDPower PTS on page 143 Show UpPTS Results UE mode Displays additional information on the Uplink Pilot Time Slot UpPTS see also chap ter 4 2 Frames Subframes and Slots on page 35 in the Result Summary Remote command SENSe CDPower PTS on page 143 Traces The trace settings determine how the measured data is analyzed and displayed on the Screen Sinai 1 Code Domain Power In CDA evaluations only one trace can be active in each diagram at any time Markers Window specific configuration The settings in this dialog box are specific to the selected window To configure the settings for a different window select the window outside the displayed dialog box or select the window from the Specifics for selection list in the dialog box Trace Mode Defines the update mode for subsequent traces Clear Write Overwrite mode the trace is overwritten by each measurement This is the default setting Max Hold The maximum value is determined over several measurements and displayed The R amp S FPS saves each trace point in the trace memory only if the new value is greater than the previous one Min Hold The minimum value is determined from several measurements and displayed Th
76. 2 SENS ICD Powers S WC E 132 SENSe CDOPOWer TREP ccinn ia Lacs reped ei REESEN EEN 132 SENSe CDPower MSHift lt MaxMAShift gt This command sets the maximum number of usable midamble shifts number of users on the base station If you use a predefined channel table this value is replaced by that of the channel table see CONFigure CDPower CTABle MSHift on page 138 Parameters lt MaxMAShift gt Range 2 to 16 Increment 2 RST 16 Example CDP MSH 10 Sets the maximum number of midamble shifts to 10 Manual operation See MA Shift Cell Number of Users on page 66 SENSe CDPower SCODe lt numeric value gt This command sets the scrambling code of the base station Parameters lt numeric value gt Range 0 to 127 Increment 1 RST 0 Configuring Code Domain Analysis Example CDP SCOD 28 Sets scrambling code 28 Manual operation See Scrambling Code on page 66 SENSe CDPower STSLot lt State gt This command selects the phase reference for synchronization see Sync To on page 67 Parameters lt State gt ON OFF ON The instrument synchronizes to the midamble of the selected slot OFF BTS application The instrument synchronizes to the P CCPCH in slot 0 UE application The instrument synchronizes to the channel of the selected slot RST OFF Example CDP SLOT 7 Selects slot number 7 CDP STSL ON Activates synchronizing to the midamble of slot 7 Manual operation
77. 2 gt lt reservedl gt lt reserved2 gt For details on these parameters see TRACe lt n gt DATA on page 166 The output depends on the channel sorting order see CONFigure CDPower CTABle ORDer on page 142 In code sorting order all midambles are output first then control channels and last the data channels In midamble sorting order each midamble is output with its corresponding control and data channel Example The following example shows the results of a query for three active channels in com mon midamble allocation e Midamble m 3 3 0 dBm e DPCH 1 16 QPSK 7 78 dB e DPCH 2 8 QPSK 7 78 dB e DPCH 3 4 8PSK 7 78 dB In this example the command would return the following string La 0 De 0 53 07 0 3 0 005 0 005 Oy 0 2 4 Ly Lh 1 18 SATB 35 O0 Oy Oy DU o3 Zp Ly STs Toy 4 78 3 Op 0 0 02 2 3 2 7 78 4 78 3 0 0 0 00 4 2 1 46 9 43 9 3 De 0 0 Q 0 4 5 1 46 9 43 9 3 0 0 De Q Q y 4 6 La 46 9 43 9 2 Be De O0 0 0 4 4 T Ty 46 9 43 9 3 0 0 0 00 4 8 1 46 9 43 9 3 0 0 O 00 4 13 1 46 9 43 9 3 0 0 0 00 4 14 1 46 9 C AS 9 3 Oy 0 Op HH e 4 15 Ly 46 9 43 9 Ip Op 0p Us 0 0 4 16 1 46 9 43 9 3 0 0 0 0 Code Domain Power Code Domain Error Power When the trace data for this evaluation is queried 4 values are transmitted for each channel CodeClass CodeNo Level
78. 2V Manual operation See Trigger Level on page 61 TRIGger SEQuence SLOPe Type For external and time domain trigger sources you can define whether triggering occurs when the signal rises to the trigger level or falls down to it Parameters Type POSitive NEGative POSitive Triggers when the signal rises to the trigger level rising edge NEGative Triggers when the signal drops to the trigger level falling edge RST POSitive Example TRIG SLOP NEG Manual operation See Slope on page 62 10 5 3 2 Configuring Code Domain Analysis TRIGger SEQuence SOURce lt Source gt This command selects the trigger source Note on external triggers If a measurement is configured to wait for an external trigger signal in a remote control program remote control is blocked until the trigger is received and the program can continue Make sure this situation is avoided in your remote control programs Parameters lt Source gt IMMediate Free Run EXTernal Trigger signal from the TRIGGER IN connector EXT2 Trigger signal from the TRIGGER AUX connector RFPower First intermediate frequency Frequency and time domain measurements only IFPower Second intermediate frequency For frequency and time domain measurements only RST IMMediate Example TRIG SOUR EXT Selects the external trigger input as source of the trigger signal Manual operation See Trigger Source on page 60 See Free Run on page 61
79. 4 UO Parameter XML File Specification Element Description DataType Specifies the binary format used for samples in the UO data binary file see DataFilename element and chapter 11 2 1 Q Data Binary File on page 206 The following data types are allowed int8 8 bit signed integer data e int16 16 bit signed integer data e int32 32 bit signed integer data e f10at32 32 bit floating point data IEEE 754 e float64 64 bit floating point data IEEE 754 ScalingFactor Optional describes how the binary data can be transformed into values in the unit Volt The binary UO data itself has no unit To get an l Q sample in the unit Volt the saved samples have to be multiplied by the value of the ScalingFactor For polar data only the magnitude value has to be multiplied For multi channel signals the ScalingFactor must be applied to all channels The attribute unit must be set to v The ScalingFactor must be gt 0 If the ScalingFactor element is not defined a value of 1 V is assumed NumberOfChan Optional specifies the number of channels e g of a MIMO signal contained in the nels 1 Q data binary file For multi channels the UO samples of the channels are expected to be interleaved within the UO data file see chapter 11 2 I Q Data Binary File on page 206 If the NumberOfChannels element is not defined one channel is assumed DataFilename Contains the filename of the I Q data binary file that is
80. 5 CDA Measurements in MSRA Operating Mode on page 41 6 2 8 Synchronization The individual channels in the input signal need to be synchronized to detect timing off sets in the slot spacings These settings are described here Common Settings Scrambling Code MA Shift Cell Number of Users Sync To inopes fe 66 SYNOSUL Code VE only tetendit iaiaaeaia inani Lk ee re 66 MA Shift Call Number of USBIS 2 ada aeter tecta 66 Time Reference BTS model 67 Time Reference UE mode 67 Mom 67 Rotate code channel to associated midamble nes 68 Scrambling Code Sets the Scrambling Code of the base station Possible values are between 0 and 127 and have to be entered as decimals Remote command SENSe CDPower SCODe on page 130 SYNC UL Code UE only Defines the code used for synchronization on the UpPTS see Time Reference UE mode on page 67 Remote command SENSe CDPower SULC on page 132 MA Shift Cell Number of Users Sets the maximum number of usable midamble shifts 2 number of users on the base station Possible values are in the range from 2 to 16 in steps of 2 midamble shifts If you use a predefined channel table this value is replaced by that of the channel table Code Domain Analysis For details see chapter 4 4 Data Fields and Midambles on page 40 Remote command SENSe CDPower MSHi ft on page 130 Time Reference BTS mode Defines which slot is
81. 64 Sets the number of measurements to 64 INIT CONT OFF Switches to single measurement mode INIT WAI Starts a measurement and waits for its end 10 5 8 Configuring Code Domain Analysis Usage SCPI confirmed Manual operation See Sweep Average Count on page 75 Automatic Settings QD MSRA operating mode In MSRA operating mode the following commands are not available as they require a new data acquisition However TD SCDMA applications cannot perform data acquisi tion in MSRA operating mode Useful commands for adjusting settings automatically described elsewhere e DISPlay WINDow n TRACe t Y SCALe AUTO ONCE on page 119 Remote commands exclusive to adjusting settings automatically SENSe AD dust E EE 139 SENSE JADJUst CONF IQUNE DU RONG DEE 139 SENSe JADJust CONFigure DURation MODE coconococonononccnananananananonananancnonenencncncnnananen 140 IGENZGelADlust CONEioure Hv teresls LOMer eene 140 SENSeJADJUsECON Figure HYS Teresis PPer traite eoru aetate tube t darn aee na 141 SENSe PAULI 141 SENSe ADJust ALL This command initiates a measurement to determine and set the ideal settings for the current task automatically only once for the current measurement This includes e Reference level Example ADJ ALL Usage Event Manual operation See Adjusting all Determinable Settings Automatically Auto
82. 76 K77 Measurements and Result Display In the TD SCDMA UE application it is assumed that only one uplink device is to be checked during one measurement and that each uplink device may use only a single slot for transmission Thus for uplink measurements only one slot is checked against the transmit mask Since the TD SCDMA UE application has no information which slot is being used it assumes the first slot in which a burst is detected to be slot 1 the first slot for uplink transmission In this slot the power must quickly rise to the high value and quickly fall back to low at the end Thus the slot of interest in uplink Power vs Time measurements is slot 1 which cannot be changed and in which the ON power is checked 1 Power vs Time 0 000775 s Fig 3 17 Power vs Time diagram for TD SCDMA UE application In order to perform the power check the TD SCDMA application must synchronize the transmit mask to the current signal as the mask is defined relative to a slot start The application measures the power in the defined number of subframes in the time domain and calculates the average power in the slots of interest It then compares the averaged power of the signal against the mask for allowed transmission power The mask consists of four defined intervals e before the burst e during fall time e during the low time e during the rise time Note For UE measurements the ON power is checked thus the mask is defined for th
83. 9 DPG H irt re 37 38 INACTIVO SNOWING s creen tr i entere ttes 14 Mapping Midamble No of Active Notation P COPGH ince aol Parameter dependencies 39 Power threshold Wii at 37 Selected 39 88 Special initial ta 37 State 74 Types 38 User data 38 Chip rate E Chip Tate re GE 11 Chips BASIES qm ebria 37 Closing Channels remote iii Windows remote as Code E ET Code Domain Analysis S66 CDA erte Eden 10 Code domain error power Ses CDEP usina di ca C P eds 11 Code Domain Power 86 COP zione ete tese cdi 15 Code domain settings Softkey Code Power Display Codes Active inactive Basics dee e Ee EE Complementary cumulative distribution function S66 CODE aaa io 31 Composite Constellation BUT e 16 Trace results zs b Composte EVM sc it 11 Evaluation sey Programming example eese 198 Ree E TEE 171 Conflict Channel table suscita ia 74 Continue single sweep inci M M 75 Continuous sweep eu EE 74 Conventions SCPlcommarnds E 105 Copying Measurement channel remote 110 Coupling Input remote zi D eu m pes 115 D Data acquisition MSRA cere reden tice S 64 65 128 see Signal capturing noir trt tte een 64 Data fields Basi uranio 40 CHIPS oinas ee ee Eege A0 Dat
84. A application Code Domain Analysis of the input signal is started automatically with the default configuration see chapter 6 2 1 Default Set tings for Code Domain Analysis on page 47 The Code Domain Analyzer menu is displayed and provides access to the most important configuration functions The Span Bandwidth Lines and Marker Functions menus are not available for Code Domain Analysis in TD SCDMA applications Code Domain Analysis can be configured easily in the Overview dialog box which is displayed when you select the Overview softkey from any menu Importing and Exporting UO Data The I Q data to be evaluated for TD SCDMA measurements can not only be measured by the TD SCDMA applications themselves it can also be imported to the applications provided it has the correct format Furthermore the evaluated UO data from the TD SCDMA applications can be exported for further analysis in external applications The import and export functions are available in the Save Recall menu which is dis played when you select the EJ Save or DN Open icon in the toolbar For details on importing and exporting UO data see the R amp S FPS UO Analyzer User Manual Code Domain Analysis 6 2 1 Default Settings for Code Domain Analyse 47 6 2 2 Configuration e visita 48 6 2 3 Data Input and Output SettingS coooooconinoccconnnnnoooonnnononnnnnnnonnnononnccnnnnnnnnnnnnnnnncnnnn noo 50 6 2 3 1 Input Source E 50 6 2 3 2
85. CONFigure CDPower CTABle COMMent on page 136 Code Domain Analysis MA Shifts Cell Defines the maximum number of midamble shifts i e the maximum number of users in a single cell for channel detection using the predefined table This value replaces the global value defined by MA Shift Cell Number of Users on page 66 For details see chapter 4 4 Data Fields and Midambles on page 40 Remote command CONFigure CDPower CTABle MSHift on page 138 Adding a Channel Inserts a new row in the channel table to define another channel Deleting a Channel Deletes the currently selected channel from the table Creating a New Channel Table from the Measured Signal Measure Table Creates a completely new channel table according to the current measurement data Remote command CONFigure CDPower MEASurement on page 113 Sorting the Table by Midamble BTS application only Sorting by midamble means that after each midamble the corresponding code is lis ted The R amp S FPS automatically distinguishes between common and default midamble assignment The assignment of code to midamble is specified in the TD SCDMA standard If neither a common nor a default midamble assignment is found sorting is in code order For details see chapter 4 4 Data Fields and Midambles on page 40 Sorting the Table by Code The midambles are sorted according to their midamble shifts Active and inactive chan nels are projected to a spreading f
86. Configuring Channel Tables Some general settings and functions are available when configuring a predefined channel table Remote commands exclusive to configuring channel tables CONFioure CDbower CT Ale COMMent teen nennen nennen nnns ntn nn ener ne 136 CONFigureoDPower CTABIE NAME itc ete re eret Rea eat ene leere 136 GONFigure GDPowerGTABle DATA iu retra Eee etae eR eoe heec qas 137 CONFloure CDbower CT Ale MSnm sessi enne nennen nennt 138 CONFigure CDPower CTABle COMMent lt Comment gt This command defines a comment for the channel table selected with CONFigure CDPower CTABle NAME Parameters lt Comment gt comment for the channel table Example CONF CDP CTAB NAME CTAB 1 Selects channel table CTAB 1 CONF CDP CTAB COMM Comment for CTAB 1 Writes a comment for CTAB 1 Manual operation See Comment on page 71 CONFigure CDPower CTABle NAME lt ChannelTable gt This command selects an existing channel table or creates a new one Use this com mand to edit the channel table To use a channel table for a measurement use the CONFigure CDPower CTABle SELect command Parameters lt ChannelTable gt lt string gt name of the channel table RST RECENT Example CONF CDP CTAB NAME NEW TAB Selects channel table for editing If a channel table with this name does not exist a new channel table by that name is cre ated Manual operation See Name on page 71 Confi
87. Culate lt n gt MARKer lt m gt STATe State This command turns markers on and off If the corresponding marker number is cur rently active as a deltamarker it is turned into a normal marker Parameters State ON OFF RST OFF Example CALC MARK3 ON Switches on marker 3 Manual operation See Marker State on page 93 See Marker Type on page 94 CALCulate lt n gt MARKer lt m gt X Position This command moves a marker to a particular coordinate on the x axis If necessary the command activates the marker Analysis If the marker has been used as a delta marker the command turns it into a normal marker Parameters lt Position gt Numeric value that defines the marker position on the x axis Range The range depends on the current x axis range Example CALC MARK2 X 1 7MHz Positions marker 2 to frequency 1 7 MHz Manual operation See Marker Table on page 19 See Marker Peak List on page 34 See X value on page 94 CALCulate lt n gt MARKer lt m gt AOFF This command turns all markers off Example CALC MARK AOFF Switches off all markers Usage Event Manual operation See All Markers Off on page 94 CALCulate lt n gt DELTamarker lt m gt STATe lt State gt This command turns delta markers on and off If necessary the command activates the delta marker first No suffix at DELTamarker turns on delta marker 1 Parameters lt State gt ON OFF RST OFF Example
88. Currently fileFormatVersion 2 is used Name Optional describes the device or application that created the file Comment Optional contains text that further describes the contents of the file DateTime Contains the date and time of the creation of the file Its type is xs dateTime see RsIqTar xsd Samples Contains the number of samples of the UO data For multi channel signals all chan nels have the same number of samples One sample can be e A complex number represented as a pair of and Q values Acomplex number represented as a pair of magnitude and phase values e Areal number represented as a single real value See also Format element Clock Contains the clock frequency in Hz i e the sample rate of the I Q data A signal gen erator typically outputs the UO data at a rate that equals the clock frequency If the UO data was captured with a signal analyzer the signal analyzer used the clock fre quency as the sample rate The attribute unit must be set to Hz Format Specifies how the binary data is saved in the UO data binary file see DataFilename element Every sample must be in the same format The format can be one of the following e complex Complex number in cartesian format i e and Q values interleaved and Q are unitless e real Real number unitless polar Complex number in polar format i e magnitude unitless and phase rad values interleaved Requires DataType float32 or f1oat6
89. DMA BTS Retrieve the trace data of the Peak Code Domain Error measurement TRAC2 DATA TRACE1 Result 0 000000000 6 730751038E 001 1 000000000 6 687619019E 001 2 000000000 6 728615570E 001 WE uis Table 10 10 Trace results for Peak Code Domain Error measurement Slot number Peak Error 0 6 730751038E 001 1 6 687619019E 001 2 6 728615570E 001 10 15 7 Measurement 7 Checking the Power vs Time This example demonstrates how to check the signal power in the time domain against a transmission power mask defined by the TD SCDMA specification in a remote envi ronment for details see Power vs Time on page 26 f2 Preparing the instrument Reset the instrument RST Activate a TD SCDMA BTS measurement channel named BTSMeasurement INST CRE NEW BTDS BTSMeasurement Set the center frequency to 2 1175 GHz FREQ CENT 2 1175 GHz Select the power vs time measurement CONF CDP MEAS PVT Configuring the measurement Set the switching point to 2 to analyze downlink data in slots 3 to 7 CONF CDP PVT SPO 2 Set the number of subframes to average to 50 CONF CDP PVT SFR 50 Automatically set the reference level and trigger to frame values according to measured levels and time SENS POW ACH AUTO LTIM Add a second measurement window for the list evaluation LAY ADD 1 BEL LEV 855ssseses Performing the measurement
90. Dow ZOOM STATe would return 1 Character Data Character data follows the syntactic rules of keywords You can enter text using a short or a long form For more information see chapter 10 1 2 Long and Short Form on page 106 Querying text parameters When you query text parameters the system returns its short form Common Suffixes Example Setting SENSe BANDwidth RESolution TYPE NORMal Query SENSe BANDwidth RESolution TYPE would return NORM 10 1 6 4 Character Strings Strings are alphanumeric characters They have to be in straight quotation marks You can use a single quotation mark or a double quotation mark Example INSTRument DELete Spectrum 10 1 6 5 Block Data Block data is a format which is suitable for the transmission of large amounts of data The ASCII character introduces the data block The next number indicates how many of the following digits describe the length of the data block In the example the 4 follow ing digits indicate the length to be 5168 bytes The data bytes follow During the trans mission of these data bytes all end or other control signs are ignored until all bytes are transmitted 0 specifies a data block of indefinite length The use of the indefinite for mat requires a NL END message to terminate the data block This format is useful when the length of the transmission is not known or if speed or other considerations prevent segm
91. If enabled the UO offset is eliminated from the measured signal This is useful to deduct a DC offset to the baseband caused by the DUT thus improving the EVM Note however that for EVM measurements according to standard compensation must be disabled Remote command SENSe CDPower NORMalize on page 143 Code Power Display For Code Domain Power evaluation Defines whether the absolute power or the power relative to the total power of the data parts of the signal is displayed Remote command SENSe CDPower PDISplay on page 143 Channel Table Sort Order You can sort channels in the Channel Table result display in two ways Code Order First all midambles are listed then all control channels and last all data channels The midambles are sorted according to their midamble shifts Active and inactive channels are projected to a spreading factor of 16 and Sorted according to their code numbers 7 3 Traces Midamble All control and data channels are assigned to the midambles they Order belong to the midambles are in ascending order The TD SCDMA application automatically distinguishes between common and default midamble allocation If neither a common nor a default midamble allocation is found sorting is in code order The allocation of code to midamble is specified in the TD SCDMA standard See also chapter 4 4 Data Fields and Midambles on page 40 Remote command CONFigure CDPower CTABle ORDer on page 14
92. List Evaluation The list evaluation provides the numerical results for the Power vs Time measure ment 2 List Evaluation Start op Ave Max Time MaxPower ns dBm 3 ns The List Evaluation displays the following information Column Description Start Stop Start and stop time of the individual time intervals of the Emission Envelope Mask in ns Avg Average power measured in mask interval Max Maximum power measured in mask interval Time MaxPower The exact point in time when the maximum power occured For details see chapter 6 3 1 Power vs Time on page 79 Remote command LAY ADD 1 RIGH LEV see LAYout ADD WINDow on page 148 Result Summary Result summaries provide the results of specific measurement functions in a table for numerical evaluation The contents of the result summary vary depending on the selected measurement function See the description of the individual measurement functions for details rer User Manual 1176 9029 02 03 33 R amp S FPS K76 K77 Measurements and Result Display 2 Result Summary Channel Bandwidth Offset Power 1 229 MHz 0 86 dBm 0 86 dBm Lower Upper 79 59 dB 80 34 dB 85 04 dB 83 85 dB Remote command LAY ADD 1 RIGH RSUM see LAYout ADD WINDow on page 148 Marker Table Displays a table with the current marker values for the active markers This table may be displayed automatically if configured accordingly see M
93. MA options offer measurements with predefined settings in the frequency and time domain e g channel power or power vs time mea surements Only one measurement type can be configured per channel however several chan nels with TD SCDMA applications can be configured in parallel on the R amp S FPS Thus you can configure one channel for a Code Domain Analysis for example and another for a Time Alignment Error or Power measurement for the same input signal Then you can use the Sequencer to perform all measurements consecutively and switch through the results easily or monitor all results at the same time in the MultiView tab For details on the Sequencer function see the R amp S FPS User Manual Selecting the measurement type When you activate an TD SCDMA application Code Domain Analysis of the input sig nal is started automatically However the TD SCDMA applications also provide other measurement types P To select a different measurement type do one of the following e Select the Overview softkey In the Overview select the Select Measure ment button Select the required measurement e Press the MEAS key In the Select Measurement dialog box select the required measurement Result Display Configuratio ona A cde 45 e Code Domain Atialysis cater tert vitet AA 46 Frequency and Time Domain Measuremente ssssssssessssesseesrtrtrrnrrnnnteesterttnnn renn 78 6 1 Result Display Configuration The
94. MEAS key In the Select Measurement dialog box select the required measurement Some parameters are set automatically according to the TD SCDMA standard the first time a measurement is selected since the last PRESET operation A list of these parameters is given with each measurement type The parameters can be changed but are not reset automatically the next time you re enter the measurement The main measurement configuration menus for the RF measurements are identical to the Spectrum application For details refer to General Measurement Configuration in the R amp S FPS User Man ual The measurement specific settings for the following measurements are available in the Analysis dialog box via the Overview LEM co ac TM vna ii a 79 e Signal Channel Power Measurement cc cccesecceeeeesencceeeesseneeteseeseaeeeeeenenees 82 e Channel Power ACLR Measuremints 2 enixe creto italia a e dea 83 Spectum Emission Mask rni E iii 84 Occupied Bahdwidth cr ER EES SEENEN NEES EEN 85 O ne ee ee a 87 6 3 1 Power vs Time The Power vs Time measurement checks the signal power against a transmission power mask defined by the TD SCDMA specification e Default Settings for PVT Measurements eene ntn nnn 79 e PVT Configuration OVerVvIiOW uacccceen neues nannte Re nnno drenan ci n 80 e PYT Measurement Sets 2 cene Cnm eat Ad 81 6 3 1 1 Default Setting
95. MSRA User Manual User Manual 1176 9029 02 03 8 Understanding the Display Information Channel bar information In TD SCDMA applications when performing Code Domain Analysis the R amp S FPS screen display deviates from the Spectrum application For Frequency and time domain measurements the familiar settings are displayed see the R amp S FPS Getting Started manual Table 2 1 Hardware settings displayed in the channel bar in TD SCDMA applications for Code Domain Analysis Ref Level Reference level Att Mechanical and electronic RF attenuation Freq Center frequency for the RF signal Channel Channel number code number and spreading factor Slot Slot of the CPICH channel Code Power Power result mode e Absolute e Relative to total power of the data parts of the signal Symbol Rate Symbol rate of the current channel Window title bar information For each diagram the header provides the following information 1 Code Domain Power Fig 2 1 Window title bar information in TD SCDMA applications 1 Window number 2 Window type 3 Trace color 4 Trace number 5 Detector Diagram footer information For most graphical evaluations the diagram footer beneath the diagram contains scal ing information for the x axis where applicable e Start slot symbol code e slot symbol code per division e Stop slot symbol code Status bar information Global instrument settings the instru
96. NGLE KEY it avi sate es eo ee aes 75 S Sample ale is eec mare ebenso gr ueris eive oe ere RO ONE 64 Scaling Amplitude range automatically 57 Configuration softkey ws OT YS axis ccs me coe eda bono e E lee Le Bee 66 Programming example seen 195 ee 8 Select meas SONKEV said 45 SEM Configuration TD SCDMA see 84 Programming example eene 194 TDESCDMA results nennt rt 29 Sequencer Aborting remote Activating remote Mode remote cde Sets Number to capture uoce tn tenete a ento erri reden 65 Selected WE 65 89 Settings OVGEVIOW x ierat uec Mss E a Eege 48 Show Inactive channels nosset rro e einer en rtr pee 14 Signal capturing Remote COhttol 2 oic acoge ENEE 128 uci M 64 Signal source EE e e e a e o ee 116 Single sweep Softkey Single zoom Slope EL 62 125 Slots Active inactiVe Js ce d cr edo ona 37 Basics Downlink uplink Bp TE 35 91 E T lee RE 12 Number to capture 65 Selected 89 A derbei 35 Softkeys Amplitude Contig TT 54 freu MEN 76 Auto Level 55 76 Capture Offset E 62 IR e M initial 58 Channel Detection 68 Code Domain Settings 89 Continue Single Sweep nets 75 CONTINUOUS SW e6p rtr terit regn 74 Display Confi
97. Offset in MACCuracy Returns the Composite EVM in PCDerror Returns the Peak Code Domain Error dB PD1 Returns the power of the slot s data part 1 in dBm PD2 Returns the power of the slot s data part 2 in dBm PDATa Returns the average power of the data parts in dBm PMIDamble Example Usage Manual operation Retrieving Results Returns the power of the midamble in dBm RHO Returns the parameter Rho SFACtor Returns the spreading factor of the channel SFRame Subframe number SLOT Returns the currently analyzed slot number SRATe Returns the symbol rate in ksps Note that TFRame returns a 9 if the trigger is at Free Run TFRame Returns the Trigger to Frame time in seconds UACTive Indicates whether UpPTS slot is active UE mode only UPOWer Power in the UpPTS slot UE mode only URHO RHO for the UpPTS slot UE mode only UERM EVM RMS for the UpPTS slot UE mode only UEPK EVM Peak for the UpPTS slot UE mode only CALC MARK FUNC CDP RES CERR Returns the Chip Rate Error Query only See Code Domain Power on page 15 See Result Summary on page 23 CONFigure CDPower BTS PVTime LIST RESult Queries the list evaluation results for Power vs Time measurements The results are a comma separated list containing the following values for each list range Return values lt RangeNo gt lt StartTime gt lt StopTime gt lt AverageDBM gt lt AverageDB
98. R ERN ke RR ERR Ene LER 118 SENSeTEREOUSUDGUSOPE EE 118 SENSe FREQuency CENTer Frequency This command defines the center frequency Parameters Frequency The allowed range and fmax is specified in the data sheet UP Increases the center frequency by the step defined using the SENSe FREQuency CENTer STEP command DOWN Decreases the center frequency by the step defined using the SENSe FREQuency CENTer STEP command RST fmax 2 Default unit Hz Example FREQ CENT 100 MHz FREQ CENT STEP 10 MHz FREQ CENT UP Sets the center frequency to 110 MHz Usage SCPI confirmed Configuring Code Domain Analysis Manual operation See Center frequency on page 58 SENSe FREQuency CENTer STEP lt StepSize gt This command defines the center frequency step size Parameters lt StepSize gt fmax iS specified in the data sheet Range 1 to fMAX RST 0 1 x span Default unit Hz Example FREQ CENT 100 MHz FREQ CENT STEP 10 MHz FREQ CENT UP Sets the center frequency to 110 MHz Manual operation See Center Frequency Stepsize on page 58 SENSe FREQuency CENTer STEP AUTO lt State gt This command couples or decouples the center frequency step size to the span In time domain zero span measurements the center frequency is coupled to the RBW Parameters lt State gt ON OFF 0 1 RST 1 Example FREQ CENT STEP AUTO ON
99. R amp S FPS K76 K77 TD SCDMA Measurements Options User Manual P Midamble Eu Channel SF Symbol Evm Modulation Type Sync Found 1176 9029 02 03 Test amp Measurement ROHDE amp SCHWARZ User Manual This manual applies to the following R amp S9FPS models with firmware version 1 30 and higher e R amp S FPS4 1319 2008K04 e R amp S FPS7 1319 2008K07 e R amp S FPS13 1319 2008K13 R amp S FPS30 1319 2008K30 R amp S FPS40 1319 2008K40 The following firmware options are described e R amp S FPS K76 1321 4379 02 e R amp S FPS K77 1321 4385 02 The firmware of the instrument makes use of several valuable open source software packages For information see the Open Source Acknowledgement on the user documentation CD ROM included in delivery Rohde amp Schwarz would like to thank the open source community for their valuable contribution to embedded computing 2015 Rohde amp Schwarz GmbH amp Co KG Muhldorfstr 15 81671 Munchen Germany Phone 49 89 41 29 0 Fax 49 89 41 29 12 164 E mail info rohde schwarz com Internet www rohde schwarz com Subject to change Data without tolerance limits is not binding R amp S is a registered trademark of Rohde amp Schwarz GmbH amp Co KG Trade names are trademarks of the owners The following abbreviations are used throughout this manual R amp S9FPS is abbreviated as R amp S FPS R amp S FPS K76 and R amp S FPS K77
100. S You can change the measurement time for the level measurement if necessary see Changing the Automatic Measurement Time Meastime Manual on page 77 Remote command SENSe ADJust LEVel on page 141 RF Attenuation Defines the attenuation applied to the RF input of the R amp S FPS Code Domain Analysis Attenuation Mode Value RF Attenuation The RF attenuation can be set automatically as a function of the selected reference level Auto mode This ensures that the optimum RF attenuation is always used It is the default setting By default and when Using Electronic Attenuation is not available mechanical attenua tion is applied In Manual mode you can set the RF attenuation in 1 dB steps down to O dB Other entries are rounded to the next integer value The range is specified in the data sheet If the defined reference level cannot be set for the defined RF attenuation the refer ence level is adjusted accordingly and the warning Limit reached is displayed NOTICE Risk of hardware damage due to high power levels When decreasing the attenuation manually ensure that the power level does not exceed the maximum level allowed at the RF input as an overload may lead to hardware damage Remote command INPut ATTenuation on page 122 INPut ATTenuation AUTO on page 122 Using Electronic Attenuation If the optional Electronic Attenuation hardware is installed on the R amp S FPS you can also activate an electro
101. SUMMA praia dto toas 33 Result summary Channel results Evaluation General results Trace results cereis rente tatit nnns occa 172 Result Summary Evaluation method 2 cinia toners cs 33 List Evaluation Method cocooococccccccicicooonccnccccnononnnnnnns 33 Result display ae tend a less Results ssss Calculated remote Data format remote Evaluating Exporting remote Retrieving remote RE remote eerte ei aet tete ettet Trace MEMOS iii trenes Trace data query remote 169 Updating the display si TO Updating the display remote ssssse 187 Retrieving Calculated results remote ssessss 161 Res lts remote ata ai 161 RF Results remote A 174 Trace results remote AA 165 RF attenuation UNO P 56 Manual DO PRE ADU i c e eren nr Er D etes 51 Remote 5 115 116 RF measurements CI 88 APA tir er nennen 78 Configuration remote iiinis 144 MSRA eiie 2 20 Performing 102 Res lts 26 Results remote 174 Selecting 9 WY POS e eena i 26 RE SigNal ee s actos Eritrea 26 28 82 gom 11 Rotation Phase between channels GENIE 25 eet Ln s or fete RUN CONT KEY cst 74 RUN SI
102. TABle CATalog This command queries the names of all the channel tables stored on the instrument for the current application The first two result values are global values for all channel tables the subsequent val ues are listed for each individual table The syntax for the return values is lt TotalSize gt lt FreeMem gt lt FileName gt lt FileSize gt lt FileName gt lt FileSize gt lt FileName gt lt FileSize gt Parameters lt TotalSize gt Sum of file sizes of all channel table files in bytes lt FreeMem gt Available memory left on hard disk in bytes lt FileName gt File name of individual channel table file lt FileSize gt File size of individual channel table file in bytes Example CONF CDP CTAB CAT Returns all existing channel tables Usage Query only Manual operation See Predefined Tables on page 70 Configuring Code Domain Analysis CONFigure CDPower CTABle COPY lt TargetFileName gt This command copies one channel table to another Select the channel table you want to copy using the CONFigure CDPower CTABle NAME command The name of the channel table may contain up to eight characters Parameters lt TargetFileName gt lt string gt name of the new channel table Example CONF CDP CTAB NAME CTAB 1 Selects channel table CTAB 1 CONF CDP CTAB COPY CTAB 2 Makes a copy of CTAB 1 with the name CTAB 2 Manual operation See Copying a Table on page 71 CONF
103. The TD SCDMA BTS application can also be used to analyze data in MSRA operating mode In MSRA operating mode only the MSRA Master actually captures data the MSRA applications receive an extract of the captured data for analysis referred to as the application data The application data range is indicated in the MSRA Master by verti cal blue lines However the individual result displays of the application need not analyze the com plete data range The data range that is actually analyzed by the individual result dis play is referred to as the analysis interval In the TD SCDMA BTS application the analysis interval is automatically determined according to the selected channel slot or frame to analyze which is defined for the evaluation range depending on the result display The currently used analysis interval in seconds related to capture buffer start is indicated in the window header for each result display For details on the MSRA operating mode see the R amp S FPS MSRA User Manual 3 2 Frequency and Time Domain Measurements In addition to the Code Domain Analysis measurements the TD SCDMA applications also provide some frequency and time domain measurements as defined in the TD User Manual 1176 9029 02 03 25 R amp S FPS K76 K77 Measurements and Result Display Eh SCDMA standard Frequency and time domain measurements are identical to the cor responding measurements in the base unit but configured according
104. This is only possible for single measurement mode See also INITiate lt n gt CONTinuous on page 157 The unit depends on the application of the command Return values lt Position gt Position of the delta marker in relation to the reference marker or the fixed reference Example INIT CONT OFF Switches to single sweep mode INIT WAI Starts a sweep and waits for its end CALC DELT2 ON Switches on delta marker 2 CALC DELT2 Y Outputs measurement value of delta marker 2 Usage Query only Analysis 10 10 2 2 General Marker Settings DISPlay MAB IS a A ia tado 181 DISPlay MTABle lt DisplayMode gt This command turns the marker table on and off Parameters lt DisplayMode gt ON Turns the marker table on OFF Turns the marker table off AUTO Turns the marker table on if 3 or more markers are active RST AUTO Example DISP MTAB ON Activates the marker table Manual operation See Marker Table Display on page 95 10 10 2 3 Positioning the Marker This chapter contains remote commands necessary to position the marker on a trace e Positioning Normal MarKOts oerte tette n enne dde 181 e Positioning Delta Marker iet Peter tbt E eee e d soda 183 Positioning Normal Markers The following commands position markers on the trace CALCulate lt n gt MARKer lt m gt MAXiMUM LEET 181 CAL Culate nz M AbkermzMAximumNENT esee sennnnasesnh snas nent ss an 182 CAL Culate nzM Abkercm
105. UNL EE SENSE e ee e 0 E SENSe GDPower S T EE SENSe CDPower STSLot MODE EI E e ee e Ee E ISENS e Eeer noces A o EI Ee ee el EE SENSe JFREQuency CEN WE ici A a ect SENSe FREQu ncy CENTer STEP consi ta SENSe FREQ ncy CENTE STEP AU TO 2 irte a cts Ete eb c de aaa SENSe FREQuency OFFSet SENSesIMSRA CAP TUS DEP ein A ae TRUE AS DARE SENSe IPOWer AGEarineEAUTO ETIMeO rri iiti er ica SENSe POWerACHannel SLOT STAR ee ia O ate e dad SENSe POWerACHannel SLOT STOR aii A A A Aa SENSe JSWESp COUN EE CAL Culate lt n gt DELTamarkerem gt MAXimumi NENT CALCulate lt n gt DEL Tamarkersm gt MAXiMUM RIGH Loc ege iia CAL Culate lt n gt DELTamarker lt m gt MAXimum PEAK CAL Culate nz D I Tamarker cmz MiNimum LEET CAL Culate nz DEI Tamarker mz MiNimumNENXT A CALCulate lt n gt DELTamarker lt m gt MINIMUM RIGHTL AA CAL Culate nz D I Tamarker mz MiNmumf PEART nano conc cn canon conan cra nono nn cnn nana CAL cCulate lt h gt DELTaMarker MA ia 180 CAL Culate nz D I Tamarker cmz X REI ative AAA 180 CALCulate n DELTamarker m Y 180 CALCulate lt n gt DEL Tamarkersm S TATe 1t tne i 179 CALCU E REED 190 CALGCulatesn LIMitske EE 174 CAL Culate nz MAbkerEUNGCHon CDPower RE Gu 162 e revise endo M 179 CALCulate lt n gt MARKer lt m gt FUNCtion POWer lt sb gt RESUIt cc
106. Vel on page 120 Shifting the Display Offset Reference Level Defines an arithmetic level offset This offset is added to the measured level The scal ing of the y axis is changed accordingly Define an offset if the signal is attenuated or amplified before it is fed into the R amp S FPS so the application shows correct power results All displayed power level results will be shifted by this value The setting range is 200 dB in 0 01 dB steps Note however that the internal reference level used to adjust the hardware settings to the expected signal optimally ignores any Reference Level Offset Thus it is impor tant to keep in mind the actual power level the R amp S FPS must handle and not to rely on the displayed reference level internal reference level displayed reference level offset Remote command DISPlay WINDow lt n gt TRACe lt t gt Y SCALe RLEVel OFFSet on page 120 Unit Reference Level For CDA measurements the unit should not be changed as this would lead to useless results Setting the Reference Level Automatically Auto Level Reference Level Automatically determines the optimal reference level for the current input data At the same time the internal attenuators are adjusted so the signal to noise ratio is opti mized while signal compression clipping and overload conditions are minimized To determine the optimal reference level a level measurement is performed on the R amp S FP
107. W CDP CDPower Code Domain Power absolute scaling XPOW CDP ABSolute XPOW CDP RATio CDPower Code Domain Power relative scaling XTIM CDP MACCuracy CEVM Composite EVM XTIM CDP ERR CTABle CTABle Channel Table XTIM CDP ERR PCDomain PCDerror Peak Code Domain Error XTIM CDP PVSLot PSLot Power vs Slot absolute scaling XTIM CDP PVSLot ABSolute XTIM CDP PVSLot RATio PSLot Power vs Slot relative scaling XTIM CDP PVSYmbol PSYMbol Power vs Symbol XTIM CDP ERR SUMMary RSUMmary Result Summary XPOW CDP RATio SCONst Symbol Constellation XTIM CDP SYMB EVM SEVM Symbol EVM Use SENS CDP PDIS ABS REL subsequently to change the scaling CONFigure CDPower BTS PVTime LIST STATe State This command hides or shows the list evaluation result display Note that this command is maintained for compatibility reasons only Use the LAYout commands for new remote control programs see chapter 10 7 2 Working with Win dows in the Display on page 147 Parameters State ON OFF RST OFF R amp S FPS K76 K77 Remote Commands for TD SCDMA Measurements 10 15 SENSe CDPower LEVel ADJust This command adjusts the reference level to the measured channel power This ensures that the settings of the RF attenuation and the reference level are optimally adjusted to the signal level without overloading the R amp S FPS or limiting the dynamic range by an S N ratio that is too small Note that th
108. a format Ee muii ile 165 DC offset e e E cua denon 90 Delta markers Deli ica ia 94 Diagram footer information arisidin isana ipn nanie 9 Diagrams Evaluation method nitent tes 32 EooterlhfOrmatiOn EE 9 Direct path Ee m 115 Display Config lcm 10 45 Duplicating Measurement channel remote 110 DwPTS Basico tried 35 Results iii a tre orti iie dee o 91 Tite referee initial eie e reni re 67 E Electronic input attenuation eene 56 Eliminating IG offset scs m e ecce a rt Ee rco EC P 90 143 Errors o Br 55 Evaluation methods la ee M 148 Evaluation range Channel estes he dne de Eh eset 88 Remote Control soii oa onera 141 Settings Obi Softkey Evaluations CDA EA 12 Dig m 32 Selecting eg rodent dca edle in i s E gene 10 EVM iere bee loas 12 Exporting VQ Qata eritin 43 44 46 206 l Q data remote EE 184 Softkey Trace results remote ssesseesssss 173 External tigger aniones 61 Level remote E 125 E Files Forimat l Q data las teneas 202 VQ data binary XML ee caecitate dn 206 VQ parameter XML tes doo 202 Filters YIG remote cain ttp 115 Format Data remote deed id 165 Frames A danari i canteens 35 Free Run A eais naera n a aia iE 61 Frequency ele UCL ET Configuration remote Offset cr
109. a gt lt ArrayOfChannel length 1 gt lt Channel gt lt PowerVsTime gt lt Min gt lt ArrayOfFloat length 256 gt lt float gt 134 lt float gt lt float gt 142 lt float gt lt float gt 140 lt float gt lt ArrayOfFloat gt lt Min gt lt Max gt lt ArrayOfFloat length 256 gt lt float gt 70 lt float gt lt float gt 71 lt float gt lt float gt 69 lt float gt lt ArrayOfFloat gt lt Max gt lt PowerVsTime gt lt Spectrum gt lt Min gt lt ArrayOfFloat length 256 gt lt float gt 133 lt float gt lt float gt 111 lt float gt lt float gt 111 lt float gt lt ArrayOfFloat gt lt Min gt lt Max gt lt ArrayOfFloat length 256 gt lt float gt 67 lt float gt lt float gt 69 lt float gt lt float gt 70 lt float gt lt float gt 69 lt float gt lt ArrayOfFloat gt Scaling Factor Numerical value Numerical value x ScalingFac tor Minimum negative int16 value 215 32768 1V Maximum positive int16 value 215 1 32767 0 999969482421875 V 11 2 UO Data Binary File lt Max gt lt Spectrum gt IQ lt Histogram width 64 height 64 gt 0123456789 0 lt Histogram gt IQ lt Channel gt lt ArrayOfChannel gt lt PreviewData gt UO Data Binary File The I Q data is saved in binary format according to the format and data type specified in the XML file See Format element and DataType element To allow reading and writing o
110. actor of 16 and sorted according to their code num bers Selecting the Slot to Evaluate The application analyzes a single slot over the total signal to detect channels Which slot to analyze is defined here The values in the Channel Detection settings and in the Evaluation Range settings are identical Cancelling Configuration Closes the Channel Table dialog box without saving the changes Saving the Table Saves the changes to the table and closes the Channel Table dialog box Code Domain Analysis 6 2 9 4 Channel Details Channel details are configured in the Channel Table dialog box which is displayed when you select the New Copy or Edit buttons for a predefined channel table in the Channel Detection dialog box Channel f X etection 2777 BTS TD SCDMA UE Channel Table Setting WT Name MyTable MA Shifts Cell J 55 enum TestTable J 16 To edit channel settings select the corresponding cell in the table and enter the new value Gray cells are read only and cannot be edited EIN ct 73 Ghannel Number Chr 25 ri id cl te er rt aaa Geel 73 SV MUON Sete salia a 73 Modulio cee at mw 74 Midatnble EE 74 EE 74 Domain ConmfliCi ona 74 Channel Type Type of channel For a list of possible channel types see chapter 4 3 1 Special Chan nels on page 37 Remote command CONFigure CDPower CTABle DATA on page 137 Channel Number Ch SF Channel number defined by code and spreading fa
111. adjacent channel leakage ratio Table 6 3 Predefined settings for TD SCDMA ACLR Channel Power measurements Standard TD SCDMA FWD UE TD SCDMA REV Number of adjacent channels 2 For further details about the ACLR measurements refer to Measuring Channel Power and Adjacent Channel Power in the R amp S FPS User Manual To restore adapted measurement parameters the following parameters are saved on exiting and are restored on re entering this measurement e Reference level and reference level offset e RBW VBW e Sweep time e Span e Number of adjacent channels e Fast ACLR mode The main measurement menus and the configuration Overview for the RF measure ments are identical to the Spectrum application However an additional function is pro vided to adapt the ACLR measurement to the current TD SCDMA signal Frequency and Time Domain Measurements Adapting the Measurement to the Current Signal eene 84 L Start Slot ARS 84 L Auto Leyeh A 84 Adapting the Measurement to the Current Signal You can adapt the measurement range to the current TD SCDMA signal Start Slot Stop Slot Adapting the Measurement to the Current Signal BTS application only Defines the measurement range for Channel Power measurements as a range of slots in the current TD SCDMA signal e g the downlink slots 4 to 6 for a Switching Point 3 Remote command SENSe POWer ACHannel SLOT STARt
112. al midambles are not known at this stage The parameters AMid1 2 in the Channel Table results show the power offset of the midamble to the data fields 1 or 2 for each channel see table 3 2 4 5 CDA Measurements in MSRA Operating Mode The TD SCDMA BTS application can also be used to analyze data in MSRA operating mode In MSRA operating mode only the MSRA Master actually captures data the MSRA applications receive an extract of the captured data for analysis referred to as the application data For the TD SCDMA BTS application in MSRA operating mode the application data range is defined by the same settings used to define the signal cap ture in Signal and Spectrum Analyzer mode In addition a capture offset can be defined i e an offset from the start of the captured data to the start of the analysis interval for the TD SCDMA BTS measurement Data coverage for each active application Generally if a signal contains multiple data channels for multiple standards separate applications are used to analyze each data channel Thus it is of interest to know which application is analyzing which data channel The MSRA Master display indicates the data covered by each application restricted to the channel bandwidth used by the corresponding standard for TD SCDMA 1 6 MHz by vertical blue lines labeled with the application name Analysis interval However the individual result displays of the application need not analyze the com pl
113. an ordered XML schema For your own implementation of the iq tar file format make sure to validate your XML file against the given schema The following example shows an UO parameter XML file The XML elements and attrib utes are explained in the following sections UO Parameter XML File Specification Sample UO parameter XML file xyz xml lt xml version 1 0 encoding UTF 8 gt lt xml stylesheet type text xsl href open IqTar xml file in web browser xslt RS IQ TAR FileFormat fileFormatVersion 1 xsi noNamespaceSchemaLocation RsIqTar xsd xmlns xsi http www w3 org 2001 XMLSchema instance lt Name gt FSV K10 lt Name gt lt Comment gt Here is a comment lt Comment gt lt DateTime gt 2011 01 24T14 02 49 lt DateTime gt lt Samples gt 68751 lt Samples gt lt Clock unit Hz gt 6 5e 006 lt Clock gt lt Format gt complex lt Format gt lt DataType gt float32 lt DataType gt lt ScalingFactor unit V gt 1 lt ScalingFactor gt lt NumberOfChannels gt 1 lt NumberOfChannels gt lt DataFilename gt xyz complex float32 lt DataFilename gt lt UserData gt lt UserDefinedElement gt Example lt UserDefinedElement gt lt UserData gt lt PreviewData gt lt PreviewData gt lt RS_IQ TAR FileFormat gt Element Description RS IQ TAR File The root element of the XML file It must contain the attribute ileFormatVersion Format that contains the number of the file format definition
114. annels are per formed one after the other in the order of the tabs The currently active measurement is indicated by a symbol in the tab label The result displays of the individual channels are updated in the tabs including the MultiView as the measurements are per formed Sequential operation itself is independent of the currently displayed tab For details on the Sequencer function see the R amp S FPS User Manual 2 2 Understanding the Display Information The following figure shows a measurement diagram during a TD SCDMA BTS mea surement All different information areas are labeled They are explained in more detail in the following sections MultiView 33 Spectrum TD SCDMA BTS Ref Level 0 dem Freq 1325 GHz Channel 1 16 Code Power AS HE Slot Jof6 Data Rate 1 Code Domain A 2 Code 1 L ode 2 Result Summary General Results CSC 0 Slot Results Slot 0 Channel Results 1 16 1 Channel bar for firmware and measurement settings 2 3 Window title bar with diagram specific trace information 4 Diagram area 5 Diagram footer with diagram specific information 6 Instrument status bar with error messages progress bar and date time display MSRA operating mode In MSRA operating mode additional tabs and elements are available A colored back ground of the screen behind the measurement channel tabs indicates that you are in MSRA operating mode For details on the MSRA operating mode see the R amp S FPS
115. application Select the Auto Level amp Time softkey to adjust the reference level and the trigger offset to subframe start to their optimum levels for the current signal For uplink measurements select the Adapt to Signal softkey and then the Auto Level amp Time button to adjust the reference level and the trigger offset to subframe start automatically 5 Select the No of Subframes softkey to define how many slots are taken into con sideration for the Power vs Time results 6 Optionally press the TRIGGER key and define a trigger for the measurement for example an external trigger to start measuring only when a useful signal is trans mitted 7 Select the Start Meas softkey or press the RUN SINGLE key to start a new mea surement The Power vs Time diagram is displayed averaged over the defined number of subframes The result of the limit check against the transmission power mask is also indicated R amp S9FPS K76 K77 How to Perform Measurements in TD SCDMA Applications 8 To display the numerical results select the Display Config softkey and drag the Evaluation List result to the display To perform an RF measurement 1 Press the MODE key and select the TD SCDMA BTS applications for base sta tion tests or TD SCDMA UE for user equipment tests Code Domain Analysis of the input signal is performed by default 2 Select the RF measurement a Press the MEAS key b Inthe Select Measurement dialog
116. apture Settings Number of Slots F Set Count Set to Analyze MSRA operating mode In MSRA operating mode only the MSRA Master channel actually captures data from the input signal The data acquisition settings for the TD SCDMA BTS application in MSRA mode define the application data extract See chapter 6 2 7 Application Data MSRA on page 65 For details on the MSRA operating mode see the R amp S FPS MSRA User Manual ere E 64 lp sae ghia 64 RRG EEN 65 Set 816 EE 65 SOU eege e Eege Eege Ee dad ca 65 Number of Slots to Capture 65 Sample Rate The sample rate is always 2 MHz indicated for reference only Invert Q Inverts the sign of the signal s Q branch The default setting is OFF Remote command SENSe CDPower QINVert on page 129 6 2 7 Code Domain Analysis RRC Filter State Selects if a root raised cosine RRC receiver filter is used or not This feature is useful if the RRC filter is implemented in the device under test DUT ON Ifan unfiltered signal is received normal case the RRC filter should be used to get a correct signal demodulation Default settings OFF If a filtered signal is received the RRC filter should not be used to get a correct signal demodulation This is the case if the DUT filters the signal Remote command SENSe CDPower FILTer STATe on page 129 Set Count Defines the number of consecutive sets to be
117. arker Table Display on page 95 4 Marker Table Wnd Type X value Y value 1 Mi 13 25 GHz 200 0 dBm 1 v 600 0 kHz 0 0 dB i M1 600 0 kHz 0 0 dB 1 T M 2 0 MHz 0 0 dB Remote command LAY ADD 1 RIGH MTAB see LAYout ADD WINDow on page 148 Results CALCulate lt n gt MARKer lt m gt X on page 178 CALCulate lt n gt MARKer lt m gt Y on page 176 Marker Peak List The marker peak list determines the frequencies and levels of peaks in the spectrum or time domain How many peaks are displayed can be defined as well as the sort order In addition the detected peaks can be indicated in the diagram The peak list can also be exported to a file for analysis in an external application 2 Marker Peak List No Remote command LAY ADD 1 RIGH PEAK see LAYout ADD WINDow on page 148 Results CALCulate lt n gt MARKer lt m gt X on page 178 CALCulate lt n gt MARKer lt m gt Y on page 176 User Manual 1176 9029 02 03 34 Short Introduction to TD SCDMA 4 Measurement Basics Some background knowledge on basic terms and principles used in TD SCDMA mea surements is provided here for a better understanding of the required configuration set tings 4 1 Short Introduction to TD SCDMA While many communication standards such as WCDMA or cdma2000 distribute the data from different users to different frequencies within a specific band FDD mode TD SCDMA distributes the data in time TDD mode Furthermor
118. articular Furthermore the soft ware functions that enhance the basic functionality for various applications are descri bed here An introduction to remote control is provided as well as information on main tenance instrument interfaces and troubleshooting In the individual application manuals the specific instrument functions of the applica tion are described in detail For additional information on default settings and parame 1 2 Typographical Conventions ters refer to the data sheets Basic information on operating the R amp S FPS is not inclu ded in the application manuals All user manuals are also available for download from the Rohde amp Schwarz website on the R amp S FPS product page at http www2 rohde schwarz com product FPS html Service Manual This manual is available in PDF format on the Documentation CD ROM delivered with the instrument It describes how to check compliance with rated specifications instru ment function repair troubleshooting and fault elimination It contains all information required for repairing the R amp S FPS by replacing modules Release Notes The release notes describe the installation of the firmware new and modified func tions eliminated problems and last minute changes to the documentation The corre sponding firmware version is indicated on the title page of the release notes The most recent release notes are also available for download from the Rohde amp Schwarz webs
119. aster channel actually captures data from the input signal The data acquisition settings for the TD SCDMA application in MSRA mode define the application data see also chapter 10 12 Configuring the Applica tion Data Range MSRA mode only on page 186 For details on the MSRA operating mode see the R amp S FPS MSRA User Manual Useful commands when defining signal capturing described elsewhere e SENSe CDPower SET on page 142 Remote commands exclusive to defining signal capturing SENSeJODPowerFIETemSTATe iieri he ertet rete a 129 Eier Ell ere 129 SENSe CDPoWerOINV elt cinc A REY SER pe SY ERA edd 129 ISENSe TODPoWeESETIGOUINI unitate the Linea tene dec At EES 129 Configuring Code Domain Analysis SENSe CDPower FILTer STATe lt State gt This command selects if a root raised cosine RRC receiver filter is used or not This feature is useful if the RRC filter is implemented in the device under test DUT Parameters lt State gt ON 1 If an unfiltered signal is received normal case the RRC filter should be used to get a correct signal demodulation OFF 0 If a filtered signal is received the RRC filter should not be used to get a correct signal demodulation This is the case if the DUT filters the signal RST 1 Example SENS CDP FILT STAT OFF Manual operation See RRC Filter State on page 65 SENSe CDPower lQLength lt CaptureLength gt This command specifies the number of slots t
120. asurement can be aborted by selecting the highlighted softkey or key again The results are not deleted until a new measurement is started Note Sequencer If the Sequencer is active the Continuous Sweep softkey only controls the sweep mode for the currently selected channel however the sweep mode only has an effect the next time the Sequencer activates that channel and only for a channel defined sequence In this case a channel in continuous sweep mode is swept repeatedly 6 2 11 Code Domain Analysis Furthermore the RUN CONT key controls the Sequencer not individual sweeps RUN CONT starts the Sequencer in continuous mode Remote command INITiate lt n gt CONTinuous on page 157 Single Sweep RUN SINGLE While the measurement is running the Single Sweep softkey and the RUN SINGLE key are highlighted The running measurement can be aborted by selecting the high lighted softkey or key again Remote command INITiate lt n gt IMMediate on page 158 Continue Single Sweep While the measurement is running the Continue Single Sweep softkey and the RUN SINGLE key are highlighted The running measurement can be aborted by selecting the highlighted softkey or key again Remote command INITiate lt n gt CONMeas on page 157 Refresh This function is only available if the Sequencer is deactivated and only for MSRA applications The data in the capture buffer is re evaluated by the currently active application only Th
121. ation only Defines the measurement range for Channel Power measurements as a range of slots in the current TD SCDMA signal e g the downlink slots 4 to 6 for a Switching Point 3 Remote command SENSe POWer ACHannel SLOT STARt on page 145 SENSe POWer ACHannel SLOT STOP on page 146 Auto Level 8 Time Adapting the Measurement to the Current Signal Automatically adjusts the reference level and the trigger offset to subframe start to their optimum levels for the current signal This prevents overloading the R amp S FPS When this function is activated current measurements are aborted and resumed after the automatic level detection is finished Remote command SENSe POWer ACHannel AUTO LTIMe on page 145 Frequency and Time Domain Measurements 6 3 6 CCDF The CCDF measurement determines the distribution of the signal amplitudes comple mentary cumulative distribution function The CCDF measurement is performed as in the Spectrum application with the follow ing settings Table 6 6 Predefined settings for TD SCDMA CCDF measurements CCDF Active on trace 1 Analysis bandwidth 10 MHz Number of samples 500000 Detector Sample For further details about the CCDF measurements refer to Statistical Measurements in the R amp S FPS User Manual To restore adapted measurement parameters the following parameters are saved on exiting and are restored on re entering this mea
122. bandwidth is defined as the bandwidth in which in default settings 99 of the total signal power is to be found The percentage of the signal power to be included in the bandwidth measurement can be changed The Occupied Bandwidth measurement is performed as in the Spectrum application with the following predefined settings according to TD SCDMA specifications Frequency and Time Domain Measurements Table 6 5 Predefined settings for TD SCDMA OBW measurements Setting Default value Power Bandwidth 99 Channel bandwidth 1 28 MHz Sweep Time 676 ms RBW 30 kHz VBW 300 kHz Detector RMS Trigger Gated IF power For further details about the Occupied Bandwidth measurements refer to Measuring the Occupied Bandwidth in the R amp S FPS User Manual To restore adapted measurement parameters the following parameters are saved on exiting and are restored on re entering this measurement e Reference level and reference level offset e RBW VBW e Sweep time e Span The main measurement menus and the configuration Overview for the RF measure ments are identical to the Spectrum application However an additional function is pro vided to adapt the OBW measurement to the current TD SCDMA signal Adapting the Measurement to the Current Signal You can adapt the measurement range to the current TD SCDMA signal Start Slot Stop Slot Adapting the Measurement to the Current Signal BTS applic
123. captured and stored in the instrument s UO memory One set consists of 63 slots The R amp S FPS can capture from 1 to 4500 sets Remote command SENSe CDPower SET COUNt on page 129 Set to Analyze Selects a specific set for further analysis The value range depends on the Set Count and is between 0 and Set Count 1 Remote command SENSe CDPower SET on page 142 Number of Slots to Capture Defines the number of slots to capture Note if the Set Count is larger than 1 the number of slots to capture is automatically set to the maximum of 64 Remote command SENSe CDPower IQLength on page 129 Application Data MSRA For the TD SCDMA BTS application in MSRA operating mode the application data range is defined by the same settings used to define the signal capturing in Signal and Spectrum Analyzer mode see chapter 6 2 6 Signal Capture Data Acquisition on page 64 In addition a capture offset can be defined e an offset from the start of the captured data to the start of the analysis interval for the TD SCDMA BTS measurement see Capture Offset on page 62 The analysis interval cannot be edited manually but is determined automatically according to the selected channel slot or set to analyze which is defined for the evalu ation range depending on the result display Note that the set slot channel is analyzed within the application data Code Domain Analysis For details see chapter 4
124. captured signal can be displayed using various evaluation methods All evaluation methods available for TD SCDMA applications are displayed in the evaluation bar in SmartGrid mode when you do one of the following e Select the EJ SmartGrid icon from the toolbar e Select the Display button in the Overview Press the MEAS key Select the Display Config softkey in any TD SCDMA menu Up to 16 evaluation methods can be displayed simultaneously in separate windows The TD SCDMA evaluation methods are described in chapter 3 1 2 Evaluation Meth ods for Code Domain Analysis on page 12 Code Domain Analysis To close the SmartGrid mode and restore the previous softkey menu select the 2 Close icon in the righthand corner of the toolbar or press any key o For details on working with the SmartGrid see the R amp S FPS Getting Started manual 6 2 Code Domain Analysis TD SCDMA measurements require special applications on the R amp S FPS which you activate using the MODE key When you activate a TD SCDMA application the first time a set of parameters is passed on from the currently active application center frequency and frequency offset e reference level and reference level offset attenuation After initial setup the parameters for the measurement channel are stored upon exiting and restored upon re entering the channel Thus you can switch between applications quickly and easily When you activate a TD SCDM
125. ccccececeeeeeceeeeeeeeeeeseeeeeeseeeeeeneeeeseteeeeeeas 174 CALCulate lt n gt MARKer lt m gt MAXimum LEFT CALCulate lt n gt MARKer lt m gt MAXimumi NENT 182 CAL Culate nz MAbkercmz MAXIMUM RIG Fisies a E 182 CALCulatesn gt MARKer lt m gt MAXimum PEAK sisirin erakina ti erreur tint 182 CAL CGulate nz MAbkerczmz MiNimum LEET CALCulate lt n gt MARKer lt m gt MINimuUMm NEX Torneissa ad CALCulatesn gt MARKer lt m gt MINIMUMIRIGH E ici ii aE id aes CAL Culate lt n gt MARKer lt m gt MINimum PEAK CAL Culate lt n gt MARKGIsim gt X ER 178 GCALCGuLate h gt MARKCESM gt Boas ri dit daa 176 ee EE OT m ER RE 178 ei e TE Ee UE 186 CAL Culatesn gt MSRA ALING VALUG 2 00 3 ceases ioe teria a aaa 187 CAL Culate nz MSbRAWINDow cnz MAL 187 CALCulatesn STATistics RESUlkeE 2 oit ree tcrtio tp gei ne at 176 GONFigure CDPower CTABle CATalog i inttr rere rr ner e eoe tin n cis 134 GONFigure CDPower C TABle el OG 136 GONFigure CDPowet CTABle C OBY erret rn hero cathe reete tener e se ec en e EP xx gana 135 CONFigure CDPower CTABle DATA CONFigure CDPower CTABle DELete CONFigure CDPower CTABlE MSHIE coord at prr e e er a iih 138 GONFigure CDPower CTABIe NAME nre a 136 GONFigure CDPower CG Ee RT E 142 GONFigure CDPowet CTABle SEL amp 6GL 2 trt rrr een rte retra xd Enn n 135 CONFigur CDPower CTABIe STAT 6 comica iia 135 CONFigure CDPower MEASurement e CONFigure CDPo
126. ccnns 138 Configuration softkey 2 74 A csseietie cen ete du 9 Switching point DO Power vs Time BTS ue tan 26 Symbol Constellation Evalliation out ede oto e ecu 23 Trace results 172 Symbol EVM aye 12 Evaluation wee 24 ee 172 Symbol Magnitude Error Evaluatio c2 9 a oae etu 24 Symbol Phase Error EvalilatlOh cita ace etta 25 Symbol rate Configuring in channel table sad Displayed n tre nre ere tier hera 9 Symbols Bits depending on modulation 39 Depending on spreading factor 38 PO SIOE P M 38 Sync settings Phase reference needed tetigi tuse 67 Titnereference uu tate eite edd 67 Sync To Phase referenc des eels Sync Settings UE Synchronization ele le Lu WE Remote COMTO i oie ates Scrambling code p lec Synnchronization Phase reference remote sssssss 131 T TAE Configuration remote sssseeen 114 TD SCDMA Basi e HORN 35 Frequency domain measurements 12 29 Measurements sssssssss es 10 Remote control 104 TD SCDMA mode Programming examples ssiri nete 192 Threshold Active channels ertt eterni 133 Channel pPOWEN 2 2 trente nier reines 37 Time reference Sync settings Timing Offset ET Traces
127. ce level is adjusted automatically using the SENSe ADJust LEVel on page 141 command the internal attenuators and the preamplifier are also adjusted In order to avoid frequent adaptation due to small changes in the input signal you can define a hysteresis This setting defines a lower threshold the signal must fall below compared to the last measurement before the reference level is adapted auto matically Parameters Threshold Range O dB to 200 dB RST 1dB Default unit dB Example SENS ADJ CONF HYST LOW 2 For an input signal level of currently 20 dBm the reference level will only be adjusted when the signal level falls below 18 dBm Manual operation See Lower Level Hysteresis on page 77 Configuring Code Domain Analysis SENSe ADJust CONFigure HYSTeresis UPPer Threshold Parameters Threshold Range O dB to 200 dB RST 1dB Default unit dB Example SENS ADJ CONF HYST UPP 2 Example For an input signal level of currently 20 dBm the reference level will only be adjusted when the signal level rises above 22 dBm Manual operation See Upper Level Hysteresis on page 77 SENSe ADJust LEVel This command initiates a single internal measurement that evaluates and sets the ideal reference level for the current input data and measurement settings This ensures that the settings of the RF attenuation and the reference level are optimally adjusted to the signal level without overloading t
128. channel in the following order Slot lt PData gt lt PD1 gt lt PD2 gt lt PMidamble gt lt RHO gt lt MAccuracy gt lt PCDError gt lt FError gt lt CError gt lt TrigFrame gt lt IQImbalance gt IQOffset lt ActiveFlag gt lt Sym Rate gt lt CodeNo gt lt SF gt lt CDPRelative gt lt CDPAbsolute gt lt EVMRMS gt lt EVM Peak gt lt reserved1 gt lt reserved2 gt lt reserved3 gt lt reserved4 gt For details on these parameters see TRACe lt n gt DATA on page 166 Symbol Constellation For the Symbol Constellation result display the command returns one value each for the real and imaginary parts of each symbol Reg lt Impo gt lt Rey gt lt Im4 gt lt Re gt Im The number of symbols depends on the spreading factor see table 4 8 Symbol EVM For the Symbol EVM result display the command returns one value for each symbol lt EVMRMS gt The number of symbols depends on the spreading factor see table 4 8 Retrieving Results 10 9 4 Exporting Trace Results RF measurement trace results can be exported to a file For more commands concerning data and results storage see the R amp S FPS User Man ual MMEMory STORe sns TRAGQR Leticia a 173 FORMaEtDEXPottDSEPaLFalor 23 t ie 173 MMEMory STORe lt n gt TRACe Trace lt FileName gt This command exports trace data from the specified window to an ASCII file Secure User Mode In sec
129. ching point between uplink and downlink slots Parameters lt numeric value gt 1to7 RST 3 Example CONF CDP PVT SPO 7 Sets the switching point to 7 Manual operation See Switching Point on page 81 SENSe POWer ACHannel AUTO LTIMe This command automatically adjusts the reference level and the trigger to frame time to their optimum levels This prevents overloading of the R amp S FPS Current measurements are aborted when this command is executed and resumed after the automatic level detection is finished Usage Event Manual operation See Auto Level amp Time on page 82 Configuring the Slot Range for Frequency Sweeps on Downlink Data In the BTS application you can define which slots to analyze i e which slots contain downlink data depending on the switching point SENSe POWer ACHannel SEO TS TARL 1 irte tatnen rte euo SEENEN ENEE 145 SENSe POWer ACHannelSLOT STOP cruce itp ente kann Ea penna boke ates k a deni nRE 146 SENSe POWer ACHannel SLOT STARt lt StartSlot gt Sets the first slot of the measurement Configuring the Result Display Parameters lt StartSlot gt The start slot may not be larger than the stop slot In the UE application the default value is 1 Range 1to7 RST 4 Example POW ACH SLOT STAR 2 Manual operation See Start Slot Stop Slot on page 82 SENSe POWer ACHannel SLOT STOP lt StopSlot gt Sets the last slot of the measurement Parameters
130. ctor Remote command CONFigure CDPower CTABle DATA on page 137 Symbol Rate Symbol rate at which the channel is transmitted 6 2 10 Code Domain Analysis Read only for reference purposes For an overview of possible symbol rates depending on the modulation type and other parameters see table 4 8 Modulation The modulation type For an overview of possible modulation types and other parameters see table 4 8 Midamble Shift For channels this is the shift of the associated midamble if a common or default mid amble assignment is detected For details see chapter 4 4 Data Fields and Midambles on page 40 Remote command CONFigure CDPower CTABle MSHift on page 138 State Indicates the channel state Codes that are not assigned are marked as inactive chan nels OFF Remote command CONFigure CDPower CTABle DATA on page 137 Domain Conflict Indicates a code domain conflict between channel definitions e g overlapping chan nels or conflicting channel codes Sweep Settings The sweep settings define how the data is measured Continuous Sweep RUN CONT AA cnn cn entente entendre 74 Single Sweep RUN SINGLE rot cete A 75 Continue Single IWS pia a 75 PRS eM 75 EE ee EE 75 Continuous Sweep RUN CONT After triggering starts the measurement and repeats it continuously until stopped While the measurement is running the Continuous Sweep softkey and the RUN CONT key are highlighted The running me
131. cu pies The occupied bandwidth is defined as the bandwidth in which in default settings 99 of the total signal power is to be found The percentage of the signal power to be included in the bandwidth measurement can be changed The occupied bandwidth Occ BW and the frequency markers are displayed in the marker table User Manual 1176 9029 02 03 30 R amp S FPS K76 K77 Measurements and Result Display Eh 1 Occupied Bandwidth 3 25 GHz 1001 pts 180 0 kHz Span 4 8 MHz 2 Marker Table Type Bet TPE Stimulus Response Function Function Result M 13 25 GHz 25 01 dBm 13 24933826 Gt 1 E 1 333066933 MHz E Fig 3 21 Occupied bandwidth measurement in TD SCDMA BTS application For details see chapter 6 3 5 Occupied Bandwidth on page 85 Remote command CONF CDP BTS MEAS OBAN see CONFigure CDPower MEASurement on page 113 Querying results CALC MARK FUNC POW RES OBW see CALCulate lt n gt MARKer lt m gt FUNCtion POWer lt sb gt RESult on page 174 CALC MARK FUNC POW RES ACP see CALCulate lt n gt MARKer lt m gt FUNCtion POWer lt sb gt RESult on page 174 CCDF The CCDF measurement determines the distribution of the signal amplitudes comple mentary cumulative distribution function The CCDF and the Crest factor are dis played For the purposes of this measurement a signal section of user definable length is recorded continuously in the zero span and the distribution of the si
132. d the Code Domain Power evaluation is a useful instrument see Code Domain Power on page 15 4 3 1 Special Channels In order to control the data transmission between the sender and the receiver specific symbols must be included in the transmitted data This data is included in special data channels defined by the 3GPP standard which use fixed codes in the code domain Thus they can be detected easily by the receiver User Manual 1176 9029 02 03 37 Channels and Codes Table 4 3 Special channels in TD SCDMA signals Name Description Slot No Spreading factor Code No 1 SF SF P CCPCH1 Primary common 0 16 1 control physical channel 1 P CCPCH2 Primary common 0 16 2 control physical channel 2 Other special control channels do not have a fixed code but are identified by higher layers The user data is contained in the Dedicated Physical Channel DPCH The detected type of the channel is indicated in the Channel Table evaluation accord ing to the following assignment Table 4 4 Available channel types in TD SCDMA signals No Channel type 0 inactive 1 midamble 2 DPCH user data 4 3 2 Channel Characteristics The spreading factor used by a channel determines the data rate Based on a sub frame length of 5 ms the bits per slot can be calculated The modulation used to transmit the user data determines how many bits are required for each symbol and
133. de synchroniza tion to the end of the measurement is not possible Thus it is not recommended that you use continuous measurement mode in remote control as results like trace data or markers are only valid after a single measurement end synchronization Starting a Measurement For details on synchronization see the Remote Basics chapter in the R amp S FPS User Manual If the measurement mode is changed for a measurement channel while the Sequencer is active see INITiate lt n gt SEQuencer IMMediate on page 159 the mode is only considered the next time the measurement in that channel is activated by the Sequencer Suffix lt n gt irrelevant Parameters lt State gt ON OFF 0 1 ON 1 Continuous measurement OFF 0 Single measurement RST 0 Example INIT CONT OFF Switches the measurement mode to single measurement INIT CONT ON Switches the measurement mode to continuous measurement Manual operation See Continuous Sweep RUN CONT on page 74 See Start Meas on page 81 INITiate lt n gt IMMediate This command starts a single new measurement You can synchronize to the end of the measurement with OPC OPC or WAI For details on synchronization see the Remote Basics chapter in the R amp S FPS User Manual Suffix lt n gt irrelevant Usage Event Manual operation See Single Sweep RUN SINGLE on page 75 See Start Meas on page 81 INITiate lt n gt SEQuencer ABORt This command stops the curren
134. description of the functionality that the application pro vides including remote control operation Installation You can find detailed installation instructions in the R amp S FPS Getting Started manual or in the Release Notes 2 1 Starting the TD SCDMA Application The TD SCDMA measurements require a special application on the R amp S FPS To activate the TD SCDMA applications gt Select the MODE key A dialog box opens that contains all operating modes and applications currently available on your R amp S FPS A Code Domain Analysis measurement is started immediately with the default settings It can be configured in the TD SCDMA Overview dialog box which is displayed when you select the Overview softkey from any menu see chapter 6 2 2 Configuration Overview on page 48 Multiple Measurement Channels and Sequencer Function When you activate an application a new measurement channel is created which deter mines the measurement settings for that application The same application can be acti vated with different measurement settings by creating several channels for the same application Only one measurement can be performed at any time namely the one in the currently active channel However in order to perform the configured measurements consecu tively a Sequencer function is provided R amp S FPS K76 K77 Welcome to the TD SCDMA Applications If activated the measurements configured in the currently active ch
135. dows are positioned horizontally the splitter also moves horizontally If the windows are positioned vertically the splitter also moves vertically Range 0 to 100 Example LAY SPL 1 3 50 Moves the splitter between window 1 Frequency Sweep and 3 Marker Table to the center 50 of the screen i e in the fig ure above to the left Example LAY SPL 1 4 70 Moves the splitter between window 1 Frequency Sweep and 3 Marker Peak List towards the top 70 of the screen The following commands have the exact same effect as any combination of windows above and below the splitter moves the splitter vertically AY SPL 3 2 70 AY SPL 4 1 70 AY SPL 2 1 70 User Manual 1176 9029 02 03 152 Configuring the Result Display LAYout WINDow lt n gt ADD lt Direction gt lt WindowType gt This command adds a measurement window to the display Note that with this com mand the suffix n determines the existing window next to which the new window is added as opposed to LAYout ADD WINDow for which the existing window is defined by a parameter To replace an existing window use the LAYout WINDow lt n gt REPLace command This command is always used as a query so that you immediately obtain the name of the new window as a result Parameters Direction LEFT RIGHt ABOVe BELow lt WindowType gt Type of measurement window you want to add See LAYout ADD WINDow on page
136. e the mentioned FDD based standards require two distinct frequency bands for uplink to the base sta tion and downlink from the base station communication TD SCDMA on the other hand can adjust the number of time slots and thus the data rate used for downlink or uplink dynamically according to the current traffic requirements The available time slots can be distributed flexibly either to several users or to a single user requiring a higher data rate This is a benefit especially when transmitting Internet data as usually more data is downloaded than uploaded Distributing the data in time also means the TD SCDMA standard can use the same carrier frequency for both uplink and downlink 4 2 Frames Subframes and Slots The structure of a typical TD SCDMA signal is shown in figure 4 1 A TD SCDMA signal is divided into frames with a length of 10 ms each The frames are further divided into 2 subframes with a length of 5 ms each For the physical com munication layer mostly the subframes are of interest Each subframe consists of 7 slots named TSO to TS6 plus a Downlink Pilot Time Slot DwPTS and an Uplink Pilot Time Slot UpPTS which are required to transmit synchronization codes Between the two synchronization areas a guard period of 75 us is inserted Each slot has a length of 0 675 ms The first slot TSO of a subframe is always reserved for downlink the second slot TS1 is always reserved for uplink The switching
137. e 40 Evaluation Methods for Code Domain Analysis The captured UO data can be evaluated using various different methods without having to start a new measurement All evaluation methods available for the selected TD SCDMA measurement are displayed in the evaluation bar in SmartGrid mode The selected evaluation also affects the results of the trace data query see chap ter 10 9 3 Measurement Results for TRACe lt n gt DATA TRACE lt n gt on page 169 LE Lu EE 13 Ghamel Table gt cm 13 E Chamnal Table Configura cui ita 14 R amp S FPS K76 K77 Measurements and Result Display Code DOMAIN POW EE 15 Code Domain Error POWER acaso AAA TARRO 15 Composite Constellation iiec nee tmi tenen ri nm HERR naa REENEN n ARRAS 16 COMPOSE EE 17 Mag Error vS ChP e 18 Marker Ke 19 Peak Code Domalli BRON aci A a AA a Rp saeua 19 Phase Emor vS Chip iria 20 Power WS Slob E 21 ee 22 PROS UTE SUMMA cita a E AE exc ote AA 23 Symbol Constell a OM EE 23 Symbol EVM EE 24 Symbol Magnitude re 24 Symbol Phase ENOT cion AAA ie eerie 25 Bitstream The Bitstream evaluation displays the demodulated bits of a selected channel for a given slot 2 Bitstream Table slo la sales e TT 0 o0 00 10 00 00 00 26 10 11 00 11 01 11 52 dod 01 01 01 00 10 78 10 11 01 10 10 Fig 3 1 Bitstream display for TD SCDMA BTS measurements Depending on the spreading factor symbol
138. e R amp S FPS saves each trace point in the trace memory only if the new value is lower than the previous one Average The average is formed over several measurements View The current contents of the trace memory are frozen and displayed Blank Removes the selected trace from the display Remote command DISPlay WINDow lt n gt TRACe lt t gt MODE on page 177 7 4 Markers Markers help you analyze your measurement results by determining particular values in the diagram Thus you can extract numeric values from a graphical display Markers are configured in the Marker dialog box which is displayed when you do one of the following e Inthe Overview select Analysis and switch to the vertical Marker tab e Press the MKR key then select the Marker Config softkey O Markers in Code Domain Analysis measurements In Code Domain Analysis measurements the markers are set to individual symbols codes slots or channels depending on the result display Thus you can use the mark ers to identify individual codes for example Individual Marker Setllgs cui ra ia 93 e General Marker Gettings eee 94 e Marker Search Selling reo dee reri canadian 95 Marker Positioning F nctioNnS EE 96 Markers Individual Marker Settings In CDA evaluations up to 4 markers can be activated in each diagram at any time Analysis Markers Marker Settings Search Range Selected State Stimulus Code Domain Marker All Marker
139. e following intervals e before the burst e during the rise time e during the high time e during fall time As a result the power vs time trace is displayed The result of the limit check Pass Fail is also indicated in the diagram The numeric results are provided in the List Evaluation result display see List Evalua tion on page 33 User Manual 1176 9029 02 03 27 R amp S FPS K76 K77 Measurements and Result Display Eh For details see chapter 6 3 1 Power vs Time on page 79 Remote command CONF CDP BTS MEAS PVT see CONFigure CDPower MEASurement on page 113 Querying results TRAC DATA TRACE1 see TRACe lt n gt DATA on page 166 CALCulate lt n gt LIMit lt k gt FAIL on page 174 CONFigure CDPower BTS PVTime LIST RESult on page 164 Power The Power measurement determines the TD SCDMA signal channel power The R amp S FPS measures the signal power in a single channel with a bandwidth of 1 2288 MHz The results are based on the root mean square CF 13 25 GHz 1001 pts 300 0 kH2 Span 3 0 MHz 2 Channel Power TD SCDMA FWD e EI Bandwidth Offset Power E M 67 60 dBm 67 60 dBm Fig 3 18 Signal channel power measurement in TD SCDMA BTS application For details see chapter 6 3 2 Signal Channel Power Measurements on page 82 Remote command CONF CDP BTS MI on page 113 Querying results CALC MARK FUNC POW RES CPOW see CALCulate lt n gt MARKer lt m gt FUNCtion POW
140. e lt t gt Y SCALe RPOSition lt Position gt This command defines the vertical position of the reference level on the display grid for all traces lt t gt is irrelevant The R amp S FPS adjusts the scaling of the y axis accordingly Parameters lt Position gt 0 PCT corresponds to the lower display border 100 corre sponds to the upper display border RST 100 PCT frequency display 50 PCT time dis play Example DISP TRAC Y RPOS 50PCT Usage SCPI confirmed DISPlay WINDow lt n gt TRACe lt t gt Y SCALe RVALue Value The command defines the power value assigned to the reference position in the grid for all traces lt t gt is irrelevant For external generator calibration measurements requires the optional External Gen erator Control this command defines the power offset value assigned to the reference position Parameters lt Value gt RST 0 dBm coupled to reference level Example DISP TRAC Y RVAL 20dBm Sets the power value assigned to the reference position to 20 dBm INPut GAIN STATe lt State gt This command turns the preamplifier on and off If activated the input signal is amplified by 20 dB If option R amp S FPS B22 is installed the preamplifier is only active below 7 GHz If option R amp S FPS B24 is installed the preamplifier is active for all frequencies Parameters lt State gt ON OFF RST OFF Example INP GAIN STAT ON Switches on 20 dB preamplification Usage SCPI
141. e results for any other applications remain unchanged This is useful for example after evaluation changes have been made or if a new sweep was performed from another application in this case only that application is updated automatically after data acquisition Note To update all active applications at once use the Refresh all function in the Sequencer menu Remote command INITiate lt n gt REFResh on page 187 Sweep Average Count Defines the number of sweeps to be performed in the single sweep mode Values from 0 to 200000 are allowed If the values 0 or 1 are set one sweep is performed The sweep count is applied to all the traces in all diagrams Remote command SENSe SWEep COUNt on page 138 Automatic Settings Some settings can be adjusted by the R amp S FPS automatically according to the current measurement settings In order to do so a measurement is performed The duration of this measurement can be defined automatically or manually Code Domain Analysis To activate the automatic adjustment of a setting select the corresponding function in the AUTO SET menu or in the configuration dialog box for the setting where available MSRA operating mode In MSRA operating mode the following automatic settings are not available as they require a new data acquisition However TD SCDMA applications cannot perform data acquisition in MSRA operating mode Adjusting all Determinable Settings Automatically Auto Al
142. e to analyze downlink data from slots 3 to 7 switching point 2 SENS POW ACH SLOT STAR 3 SENS POW ACH SLOT STOP 7 Automatically set the reference level and trigger to frame values according to measured levels and time SENS POW ACH AUTO LTIM y a Performing the measurement Stops continuous sweep INIT CONT OFF Sets the number of sweeps to be performed to 10 SWE COUN 10 Start a new measurement with 10 sweeps and wait for the end INIT WAI SR AREA Retrieving results Retrieves the calculated channel power value of the reference channel CALC MARK FUNC POW RES CPOW Result 36 013 dBm Programming Examples TD SCDMA BTS Queries the result of the limit check 10 15 3 CALC LIM FAIL Result 0 passed Retrieves the peak list of the spectrum emission mask measurement TRAC DATA LIST Result 1 000000000 1 275000000E 007 8 500000000E 006 1 000000000E 006 2 108782336E 009 8 057177734E 001 7 882799530E 001 2 982799530E 001 0 000000000 0 000000000 0 00000000 2 000000000 8 500000000E 006 7 500000000E 006 1 000000000E 006 2 109000064E 009 8 158547211E 001 7 984169006E 001 3 084169006E 001 0 000000000 0 000000000 0 00000000 3 000000000 7 500000000E 006 3 500000000E 006 1 000000000E 006 2 113987200E 009 4 202708435E 001 4 028330231E 001 5 270565033 0 000000000 0 000000000 0 000000000 eee
143. eading factor of the channel and thus the number of possible channels per slot Table 4 2 Relationship between code class channels and spreading factor Code class Spreading factor No channels per slot 2 4 3 8 4 16 Chips The user data is spread to code channels across the available bandwidth using the spreading factor before transmission The spreaded bits are referred to as chips Each slot consists of 864 chips The chips are transferred at a rate of 1 28 Megachips per second Mcps Active and inactive codes slots During code domain analysis the power in the selected slot in the captured subframes is measured in order to detect active channels If the total power in the slot does not exceed a threshold the slot is considered to be inactive Otherwise the slot is ana lyzed to detect channels To do so the data in the slot is unscrambled according to the defined scrambling code and carrier center frequency Then all possible spreading sequences are applied to the unscrambled data defining the individual channels Each despread channel whose power exceeds the channel threshold is considered to be active The reference signal is then generated according to the active channels only If the power threshold for inactive channels is not set correctly power from supposedly inactive channels contributes to the peak code domain error leading to false results In order to determine the correct threshol
144. eas Hl erte CONTINUOUS eene 157 IN Tiatesn gt REFRESN sheer rnt enr AAA AAA N 187 INITiate lt n gt SEQuencernABORt occasion ri a it di a 158 INlTlate nz GEOuencer IMMedate AAA 159 ll E ee ele KEE 159 INITiatesn SEQuencer REFResh ALL coto ene tt e ener eI t e ener ht tree 160 INITiate lt n gt IMMediate INPULAT RK e TEE Jl Te RK LTE D Ke DEE 122 MU O O 115 INPUEDP A This l 115 A NN 122 INPUEEATT AUTO E 123 INPUEEATT STA NK 123 INPutiFIE Ter YIGESTA KE 115 leie 121 Jl Wale Le 116 NEE EE cocos 116 INS Tr ment CREate DUPLicate nto atari 110 INSTr ment CREalte REPLACO rcm tre As aisha 110 INSTr ment CREate NEW rrt rrr irr rere irre rhe kr rera erae ee PO Rd FCR E ER ege 110 MINS Tumen Bhce 111 INS TRUMONtEIS EE 111 INS T men RENAME E 112 INSTrument SELect EAYCUEADD WINDOW RE 148 RN del NEIER KEE 150 ESCASO EE A 150 EAYout REMove WINDOW 00 A eo ee reve tenens 150 EAYout REPEace WINDOW n terere tereti ne rene tna eere er ci en rrr th 151 ES gei Lu e mesa 151 EAYOUUWINDOWSnDSsADDO i ccce rtr cr eve eti wine EE e RARE e arian E pud 153 LAY out WINDOW lt A gt IDEN gege 153 ELAYOUEWINDOW lt n REMOVO EE 153 LAY out Ale Re ET Ee 154 MMEMory LOAD IQ STATe 185 MMEMory STOResh eer el E E 185 MMEMory STOResn IQ S TA T6 r
145. easurements The result display shows the composite EVM values per slot The slots are displayed according to the detected channels using the following colors e yellow active channel e red selected channel ifa channel is made up of more than one code all codes that belong to the channel are red User Manual 1176 9029 02 03 17 Code Domain Analysis e none no active channels Only the channels detected as being active are used to generate the ideal reference signal If a channel is not detected as being active e g on account of low power the difference between the test signal and the reference signal and therefore the compo site EVM is very large Distortions also occur if unassigned codes are wrongly given the status of active chan nel To obtain reliable measurement results select an adequate channel threshold Remote command LAY ADD 1 RIGH CEVM see LAYout ADD WINDow on page 148 TRACe lt n gt DATA on page 166 Mag Error vs Chip Mag Error vs Chip activates the Magnitude Error versus chip display The magnitude error is displayed for all chips of the selected slot The magnitude error is calculated as the difference of the magnitude of the received signal to the magnitude of the reference signal The reference signal is estimated from the channel configuration of all active channels The magnitude error is related to the square root of the mean power of reference signal and given in percent
146. ed a suspect area of the captured data in another application you would now like to analyze the same data in the TD SCDMA BTS application 1 Select the Overview softkey to display the Overview for Code Domain Analysis 2 Select the Signal Capture button User Manual 1176 9029 02 03 102 3 Define the application data range as the Capture Length Slots 4 Define the starting point of the application data as the Capture offset The offset is calculated according to the following formula capture offset starting point for application starting point in capture buf fer 5 The analysis interval is automatically determined according to the selected chan nel slot or set to analyze defined for the evaluation range depending on the result display Note that the set slot channel is analyzed within the application data If the analysis interval does not yet show the required area of the capture buffer move through the sets slots channels in the evaluation range or correct the appli cation data range 6 Ifthe Sequencer is off select the Refresh softkey in the Sweep menu to update the result displays for the changed application data 10 10 1 Introduction Remote Commands for TD SCDMA Mea surements The following commands are required to perform measurements in TD SCDMA appli cations in a remote environment It assumes that the R amp S FPS has already been set up for remote operation in a networ
147. ee LAYout SPLitter on page 151 Parameters lt Size gt LARGe Maximizes the selected window to full screen Other windows are still active in the background SMALI Reduces the size of the selected window to its original size If more than one measurement window was displayed originally these are visible again RST SMALI Example DISP WIND2 LARG 10 7 2 Working with Windows in the Display The following commands are required to change the evaluation type and rearrange the screen layout for a measurement channel as you do using the SmartGrid in manual operation Since the available evaluation types depend on the selected application some parameters for the following commands also depend on the selected measure ment channel LAYO ADD WINDOW Z m 148 Bd ele KEE 150 LAY outs IDENtify AWIN DOW iia ro ia 150 LAY ourRENOVvelAVINDOW EEN 150 LAYout REPLace WINDOW ecce pino tpud iaa ada bana cu adi 151 LAYQUES PISE e 151 LAY out WINDOWS ADD m 153 LAYoUt WINDOW lt A gt DEN 153 BK de Dr ue et 153 LAY out WINDOWS REPLSCG innsinn tate sta ce Esa ca dodo ruens 154 Configuring the Result Display LAYout ADD WINDow lt WindowName gt lt Direction gt lt WindowType gt This command adds a window to the display in the active measurement channel This command is always used as a query so that you immediately obtain the name of the new window as a result To replace an e
148. ee table 4 1 Range 0 to 255 RST 0 Example CDP SULC 28 Sets the code 28 Manual operation See SYNC UL Code UE only on page 66 SENSe CDPower TREF lt numeric value gt Defines which slot is used as a time reference for synchronization Parameters lt numeric value gt DPTS Uses the Downlink Pilot Time Slot DWPTS as a time reference UPTS Uses the Uplink Pilot Time Slot UpPTS as a time reference SLOT Uses slot 0 BTS mode or slot 1 UE mode as a time reference RST SLOT Example CDP TREF DPTS Configuring Code Domain Analysis Manual operation See Time Reference BTS mode on page 67 See Time Reference UE mode on page 67 10 5 6 Channel Detection The channel detection settings determine which channels are found in the input signal The commands required to work with channel tables are described here e General Channel Detection iones a area 133 e Managing Channel Tables nennen nter nennen kann Denn kPa dla 134 e Configuring Channel T bles reciente eterni eben bnt 136 10 5 6 1 General Channel Detection The following commands configure how channels are detected in general Useful commands for general channel detection described elsewhere e CONFigure CDPower CTABle STATe on page 135 Remote commands exclusive to general channel detection SENSe CDPower eg aran nana aad 133 SENSO COP GWerm MINA oca is AA A A A A AA AA 133 SENSe CDPower ICTReshold
149. een the scrollbars Remote command DISPlay WINDow lt n gt Z00M MULTiple lt zoom gt STATe on page 156 DISPlay WINDow lt n gt Z0OM MULTiple lt zoom gt AREA on page 155 Restore Original Display Restores the original display and closes all zoom windows Remote command DISPlay WINDow lt n gt ZOOM STATe on page 155 single zoom DISPlay WINDow lt n gt ZOOM MULTiple lt zoom gt STATe on page 156 for each multiple zoom window R Deactivating Zoom Selection mode Deactivates any zoom mode Selecting a point in the display no longer invokes a zoom but selects an object Remote command DISPlay WINDow lt n gt ZOOM STATe on page 155 single zoom DISPlay WINDow lt n gt ZOOM MULTiple lt zoom gt STATe on page 156 for each multiple zoom window 6 3 Frequency and Time Domain Measurements TD SCDMA measurements require a special application on the R amp S FPS which you activate using the MODE key When you activate a TD SCDMA application Code Domain Analysis of the input signal is started automatically However the TD SCDMA applications also provide various frequency and time domain measurement types Frequency and Time Domain Measurements Selecting the measurement type P To select a frequency and time domain measurement type do one of the following e Select the Overview softkey In the Overview select the Select Measure ment button Select the required measurement e Press the
150. elects the trigger signal from the TRG IN connector For details see the Instrument Tour chapter in the R amp S FPS Getting Started manual External Trigger 1 Trigger signal from the TRG IN connector External Trigger 2 Trigger signal from the TRG AUX connector Note Connector must be configured for Input in the Outputs con figuration see Trigger 2 on page 53 Remote command TRIG SOUR EXT TRIG SOUR EXT2 See TRIGger SEQuence SOURce on page 126 IF Power Trigger Source Trigger Source The R amp S FPS starts capturing data as soon as the trigger level is exceeded around the third intermediate frequency For frequency sweeps the third IF represents the start frequency The trigger band width at the third IF depends on the RBW and sweep type For measurements on a fixed frequency e g zero span or UO measurements the third IF represents the center frequency This trigger source is only available for RF input This trigger source is available for frequency and time domain measurements only The available trigger levels depend on the RF attenuation and preamplification A refer ence level offset if defined is also considered For details on available trigger levels and trigger bandwidths see the data sheet Remote command TRIG SOUR IFP see TRIGger SEQuence SOURce on page 126 Trigger Level Trigger Source Defines the trigger level for the specified trigger source For deta
151. ement on page 113 command Some frequency and time domain measurements require further configuration E Analysis for Frequency and Time Domain Measurements General result analysis settings concerning the trace markers lines etc for RF mea surements are identical to the analysis functions in the Spectrum application except for some special marker functions which are not available in TD SCDMA applications For details see the General Measurement Analysis and Display chapter in the R amp S FPS User Manual e Configuring Power vs Time Measurements ocoococccccnncncccnccoconnnnnononccnncnnnnnnnnnannnns 144 e Configuring the Slot Range for Frequency Sweeps on Downlink Data 145 10 6 1 Configuring Power vs Time Measurements CONFigure CDPower BTS PVTime SFRates ui aaia daia aadi 145 GONFigure CDPower BTS PVTime SPOINt encarna iiri aa 145 SENSe POWer ACHannel AUTO LTIMe esssssssssseseesenenee nennen enne nennen tr trt a rna 145 10 6 2 Configuring Frequency and Time Domain Measurements CONFigure CDPower BTS PVTime SFRames lt numeric value gt This command defines the number of subframes to be used for averaging Parameters lt numeric value gt Subframe value RST 100 Example CONF CDP PVT SFR 50 Sets the number of subframes to 50 Manual operation See No of Subframes on page 82 CONFigure CDPower BTS PVTime SPOint lt numeric value gt This command defines the swit
152. entation of the data into blocks of definite length 10 2 Common Suffixes In TD SCDMA applications the following common suffixes are used in remote com mands Suffix Value range Description n 11 16 Window lt t gt 1 CDA Trace 6 Frequency and time domain lt m gt 1 4 CDA Marker 1 16 Frequency and time domain 10 3 Activating the TD SCDMA Applications TD SCDMA measurements require a special application on the R amp S FPS The mea surement is started immediately with the default settings Activating the TD SCDMA Applications INSTromentCREate DUPLICAS 1 a a aaa 110 INSTrumentGREAte NEW cias 110 INS ThumentGREate REPLACE irae iio ida ENEE ENEE Seed 110 Lane Eer E 111 INSTrumentllS Tus 111 INSTTrUMEN REN AM cion dd SE 112 EEN Blut DEE DEE 113 SYSTem PRESet CHANnel EXECUE cocaina oia a 113 INSTrument CREate DUPLicate This command duplicates the currently selected measurement channel e creates a new measurement channel of the same type and with the identical measurement set tings The name of the new channel is the same as the copied channel extended by a consecutive number e g Spectrum gt Spectrum 2 The channel to be duplicated must be selected first using the INST SEL command This command is not available if the MSRA Master channel is selected Example INST SEL Spectrum INST CRE DUPL Duplicates the channel named Spectrum and creates a new
153. ents in MSRA Operating Mode 25 Code Domain Parameters Two different types of measurement results are determined and displayed in the Result Summary global results and channel results for the selected channel O The number of the slot and channel code at which the measurement is performed is indicated globally for the measurement in the channel bar The spreading code of the selected channel is indicated with the channel number in the channel bar and above the channel specific results in the Result Summary In the Channel Table the analysis results for all active channels are displayed indi vidually Table 3 1 General and slot specific code domain power results in the Result Summary Parameter Description Chip Rate Error The chip rate error in ppm A large chip rate error results in symbol errors and there fore in possible synchronization errors for code domain measurements This mea surement result is also valid if the application could not synchronize to the TD SCDMA signal Trigger to Frame The time difference between the beginning of the recorded signal section to the start of the first slot For triggered measurements this difference is identical with the time difference of frame trigger trigger offset and the start of the first slot If synchronization of the analyzer and input signal fails the value of Trigger to Frame is not significant For non triggered measurements no result is avai
154. enuation osise 56 Preamplifier B24 Output AAA cretzceastewernerecentones 52 Configuration remote 116 Noise SO CO n nire ttiv 53 i re re O 52 Mae 53 62 Overview Configuration TD SCDMA eee 48 P PCDE Evaluatio accion Programming example sa Trace results iiis cilantro deco enn Troubl shootitlg EE Peak Code Domain Error see TR 19 Peak list Evaluation method 2 iaces cra 34 Peak search ROY cst istane ten etceceadtacas tives savacvarnavece han cargedatcnaneeneh toed 97 MOG E 96 Peaks Marker positioning eere ee oa tira rent ert nee kann 97 Next DOMO P 97 Performing 3G FDD measurement A 99 Phase Rotation between channels cccceeeeeeeeeeeeeees 68 Phase Error vs Chip D len 20 Pilot bits hio idio EE 12 PKkODE 11 Power Channel Meas example ceceeeeereeeeeereeteenteeees 193 Channels cabdavensereccaccansesteverceneedeacac Display taria alcala Inactive channels Reference icai dee teat ka nuce d esa sa maiden dap pn A ER Dr ime domallt 22 ttis oaa rica nn es ncn erra Power vs Slot Evaluation 2 ini teta na anc aR ik 21 Trace results ciii niea itat pesto cos 171 Power vs Symbol IE Denm 22 Trace results iaceat ia no tah ncn tus 172 Power vs Time Programming example s cccccccsecasceessrssssosecsensesnesanseses 200 Trace results E 172 Preamp
155. er lt sb gt RESult on page 174 CALC MARK FUNC POW RES ACP see CALCulate lt n gt MARKer lt m gt FUNCtion POWer lt sb gt RESult on page 174 EN AS POW see CONFigure CDPower MEASurement Ch Power ACLR Channel Power ACLR performs an adjacent channel power measurement in the default setting according to TD SCDMA specifications adjacent channel leakage ratio The measurement range can be adapted to a slot range of the current TD SCDMA sig nal The R amp S FPS measures the channel power and the relative power of the adjacent channels and of the alternate channels The results are displayed below the diagram IESSE User Manual 1176 9029 02 03 28 R amp S FPS K76 K77 Measurements and Result Display Eh 1001 pts 1 16 MHz Span 11 6 MHz 2 Result a TD SOOMAA FWD Channel Bandwidth Offset Power ef 1 68 56 dBm 68 56 dBm Channel Bandwidth Offset Lower Upper A ME 0 01 dB 0 01 dB Fig 3 19 ACLR measurement in TD SCDMA BTS application For details see chapter 6 3 3 Channel Power ACLR Measurements on page 83 Remote command CONF CDP BTS MEAS ACLR see CONFigure CDPower MEASurement on page 113 Querying results CALC MARK FUNC POW RES ACP see CALCulate lt n gt MARKer lt m gt FUNCtion POWer lt sb gt RESult on page 174 CALC MARK FUNC POW RES ACP see CALCulate lt n gt MARKer lt m gt FUNCtion POWer lt sb gt RESult on page 174 Spectrum Emission Mas
156. ete data range The data range that is actually analyzed by the individual result dis play is referred to as the analysis interval In the TD SCDMA BTS application the analysis interval is automatically determined according to the selected channel slot or set to analyze which is defined for the evalu ation range depending on the result display The analysis interval can not be edited directly in the TD SCDMA BTS application but is changed automatically when you change the evaluation range User Manual 1176 9029 02 03 41 R amp S FPS K76 K77 Measurement Basics Analysis line A frequent question when analyzing multi standard signals is how each data channel is correlated in time to others Thus an analysis line has been introduced The analysis line is a common time marker for all MSRA applications It can be positioned in any MSRA application or the MSRA Master and is then adjusted in all other applications Thus you can easily analyze the results at a specific time in the measurement in all applications and determine correlations If the marked point in time is contained in the analysis interval of the application the line is indicated in all time based result displays such as time symbol slot or bit dia grams By default the analysis line is displayed however it can be hidden from view manually In all result displays the AL label in the window title bar indicates whether or not the analysis line lies within the analysis
157. f streamed UO data all data is interleaved i e complex values are interleaved pairs of and Q values and multi channel signals contain interleaved complex sam ples for channel 0 channel 1 channel 2 etc If the NumberOfChannels element is not defined one channel is presumed Example Element order for real data 1 channel I 0 Real sample 0 I 1 Real sample 1 I 2 Real sample 2 Example Element order for complex cartesian data 1 channel I 0 Q 0 Real and imaginary part of complex sample 0 I 1 QLI Real and imaginary part of complex sample 1 I 2 Q 2 Real and imaginary part of complex sample 2 Example Element order for complex polar data 1 channel Mag 0 Phi 0 Magnitude and phase part of complex sample 0 Mag 1 Phi l Magnitude and phase part of complex sample 1 Mag 2 Phi 2 Magnitude and phase part of complex sample 2 Example Element order for complex cartesian data 3 channels Complex data I channel no time index Q channel no time index 0 1 0 Q 0 0 Channel 0 Complex sample 0 1 Ode QI fol Channel 1 Complex sample 0 21 01 Q 2 0 Channel 2 Complex sample 0 0 1 O 0 1 Channel 0 Complex sample 1 ET GTI Pay Channel 1 Complex sample 1 2 1 1 0 21 11 Channel 2 Complex sample 1 UO Data Binary File I 0 2 O 0 21 Channel 0 Complex sample 2 I 1 2 1 Q 11 2 Channel 1 Comp
158. for the new channel see INSTrument LIST on page 111 Example INST CRE REPL Spectrum2 IQ IQAnalyzer Replaces the channel named Spectrum2 by a new measure ment channel of type IQ Analyzer named IQAnalyzer Usage Setting only INSTrument DELete lt ChannelName gt This command deletes a measurement channel If you delete the last measurement channel the default Spectrum channel is activa ted Parameters lt ChannelName gt String containing the name of the channel you want to delete A measurement channel must exist in order to be able delete it Example INST DEL Spectrum4 Deletes the channel with the name Spectrum4 Usage Event INSTrument LIST This command queries all active measurement channels This is useful in order to obtain the names of the existing measurement channels which are required in order to replace or delete the channels Return values lt ChannelType gt For each channel the command returns the channel type and lt ChannelName gt channel name see tables below Tip to change the channel name use the INSTrument REName command Example INST LIST Result for 3 measurement channels ADEM Analog Demod IQ IQ Analyzer IQ IQ Analyzer2 Usage Query only Activating the TD SCDMA Applications Table 10 1 Available measurement channel types and default channel names in Signal and Spectrum
159. fset This setting is only available for applications in MSRA mode not for the MSRA Master It has a similar effect as the trigger offset in other measurements Parameters Offset This parameter defines the time offset between the capture buf fer start and the start of the extracted application data The off set must be a positive value as the application can only analyze data that is contained in the capture buffer Range O to Record length RST 0 Manual operation See Capture Offset on page 62 10 13 Status Registers The following commands are required for the status reporting system specific to the TD SCDMA applications In addition the TD SCDMA applications also use the stand ard status registers of the R amp S FPS depending on the measurement type For details on the common R amp S FPS status registers refer to the description of remote control basics in the R amp S FPS User Manual D RST does not influence the status registers e STATus QUEStionable SYNC Register 188 10 13 14 STATus QUEStionable SYNC Register The STATus QUEStionable SYNC register contains application specific information about synchronization errors or errors during pilot symbol detection Table 10 4 Status error bits in STATus QUEStionable SYNC register for TD SCDMA applications Bit Definition 0 Not used 1 Frame Sync failed This bit is set when synchronization is not possible within the application Possible
160. functions in the Overview vary depending on the currently ter 6 3 Frequency and Time Domain Measurements on page 78 For Code Domain Analysis measurements the Overview provides quick access to the following configuration dialog boxes listed in the recommended order of process ing The Signal Description button indicated in the Overview is not required for TD SCDMA measurements 1 Select Measurement See chapter 3 Measurements and Result Display on page 10 2 Input Frontend See chapter 6 2 3 Data Input and Output Settings on page 50 3 Optionally Trigger See chapter 6 2 5 Trigger Settings on page 59 4 Signal Capture See chapter 6 2 6 Signal Capture Data Acquisition on page 64 5 Synchronization See chapter 6 2 8 Synchronization on page 66 6 Channel Detection Code Domain Analysis See chapter 6 2 9 Channel Detection on page 68 7 Analysis See chapter 7 Analysis on page 88 8 Display Configuration See chapter 6 1 Result Display Configuration on page 45 To configure settings gt Select any button in the Overview to open the corresponding dialog box Select a setting in the channel bar at the top of the measurement channel tab to change a specific setting Preset Channel Select the Preset Channel button in the lower lefthand corner of the Overview to restore all measurement settings in the current channel to their default values
161. g 10 45 Evaluation Range rere tn 88 oo M 44 External 61 Free Run 01 Frequency CONTIG EE 58 el Ge 61 lujo 44 Input So trce CONTIG EE 50 IQ Export 44 IQ Import 44 Lower Level Hysteresis sd Marker CONTO rrt ret te Meastime ALTO da Meastime Manual Se Oe WE 97 Next d EE 97 NextPeak cnica te PEU ete 97 Norm Delta 94 Outputs Config 2 92 AAA 97 A 57 Ref RT EE 55 Ref Level Offset cuina ds 55 REMOS EE 75 RF Atten Auto 56 RF Atten Manual 56 Scale Config OF Select MAS EE 45 Signal Captune E 64 Single SWCD RE 75 Sweep Config 74 SWEEP COUPE iti eon er eiie Cieero dts 75 le tel E ET 66 Trace COMO Me T 91 Trigger Config 59 Trigger Offset A A 62 Upper Level Hysteresis AA 7T Span Men sissie UM 46 Specifics for Configuration i ti 50 81 Spectrum Emission Mask S66 SEM utt c eet re Ge 29 Spreading factor Basi ut elei 37 State Channels e het tp a ente o 74 Status registers CONTENTS cci tidie erede ted tatit devenue STATus QUEStionable SYNC TDSSGDMA eia aa Subframes Basi M iere ee dto 35 Uer DE 35 Suffixes lu e IT 109 Remote commands os cli 106 Sweep ABDOMINO aii secretion ct 74 75 Configuration remote ooooncocnonnccnnnnconcnonnccccnnnna
162. g box See chapter 6 2 9 4 Channel Details on page 73 Copying a Table Copies an existing channel table definition The details of the selected channel are dis played in the Channel Table dialog box See chapter 6 2 9 4 Channel Details on page 73 Remote command CONFigure CDPower CTABle COPY on page 135 Deleting a Table Deletes the currently selected channel table after a message is confirmed Remote command CONFigure CDPower CTABle DELete on page 135 6 2 9 3 Channel Table Settings and Functions Some general settings and functions are available when configuring a predefined channel table Channel tables are configured in the Channel Table dialog box which is displayed when you select the New Copy or Edit buttons for a predefined channel table in the Channel Detection dialog box OS 71 COMME E 71 MASSA A TA 72 A na O 72 Deleting a Chameleon 72 Creating a New Channel Table from the Measured Signal Measure Table 72 Sorting the Table By Midamble idt met tret re reete e tette 72 Sorting the Table by Code itcr pecie a en cd odds 72 Selec ng the Slot to EValUalg cocina 72 Cancelling Copnfiouratton eene eintreten rnnt 72 cB e M 72 Name Name of the channel table that will be displayed in the Predefined Channel Tables list Remote command CONFigure CDPower CTABle NAME on page 136 Comment Optional description of the channel table Remote command
163. ge 26 Table 10 3 Return values for LIST parameter Spurious SEM measurements lowing order check For every measurement range you have defined range 1 n the command returns eight values in the fol lt No gt lt StartFreq gt lt StopFreq gt lt RBW gt lt PeakFreq gt lt PowerAbs gt lt PowerRel gt lt PowerDelta gt lt Limit Check gt lt Unused1 gt lt Unused2 gt lt No gt range number lt StartFreq gt lt StopFreq gt start and stop frequency of the range lt RBW gt resolution bandwidth lt PeakFreq gt frequency of the peak in a range lt PowerAbs gt absolute power of the peak in dBm lt PowerRel gt power of the peak in relation to the channel power in dBc lt PowerDelta gt distance from the peak to the limit line in dB positive values indicate a failed limit lt LimitCheck gt state of the limit check 0 PASS 1 FAIL e lt Unused1 gt lt Unused2 gt reserved 0 0 10 9 3 10 9 3 1 Retrieving Results TRACe lt n gt DATA X lt TraceNumber gt This command queries the horizontal trace data for each sweep point in the specified window for example the frequency in frequency domain or the time in time domain measurements This is especially useful for traces with non equidistant x values e g for SEM or Spuri ous Emissions measurements Query parameters lt TraceNumber gt Trace number TRACE TRACE6 Example TRAC3 X TRACE1 Returns the x values f
164. gger button In this case further parameters are available for the output signal Remote command OUTPut TRIGger lt port gt OTYPe on page 127 Level Output Type Trigger 2 Defines whether a constant high 1 or low 0 signal is sent to the output connector Remote command OUTPut TRIGger lt port gt LEVel on page 127 6 2 4 6 2 4 1 Code Domain Analysis Pulse Length Output Type Trigger 2 Defines the length of the pulse sent as a trigger to the output connector Remote command OUTPut TRIGger lt port gt PULSe LENGth on page 128 Send Trigger Output Type Trigger 2 Sends a user defined trigger to the output connector immediately Note that the trigger pulse level is always opposite to the constant signal level defined by the output Level setting e g for Level High a constant high signal is output to the connector until the Send Trigger button is selected Then a low pulse is sent Which pulse level will be sent is indicated by a graphic on the button Remote command OUTPut TRIGger lt port gt PULSe IMMediate on page 128 Frontend Settings Frequency amplitude and y axis scaling settings represent the frontend of the mea surement setup e AMPINUDS SOWING anios 54 NB SOAINIQ n 57 e Prequency Sell ita cec e dne eo etd e eec n bp n x Re x eod 58 Amplitude Settings Amplitude settings determine how the R amp S FPS must process or display the expected input power levels
165. gnal amplitudes is evaluated For details see chapter 6 3 6 CCDF on page 87 IESSE User Manual 1176 9029 02 03 31 R amp S FPS K76 K77 Measurements and Result Display Eh 3 2 2 CF 13 25 GHz Mean Pwr 20 00 dB 2 Result Summary Samples 500000 Mean Peak Crest 10 1 0 1 0 01 Trace 1 13 22 dBm 5 01 dBm 18 23 dB E 6 18 dB Fig 3 22 CCDF measurement results for TD SCDMA BTS measurements Remote command CONF CDP BTS MEAS CCDF see CONFigure CDPower MEASurement on page 113 Querying results CALCulate lt n gt STATistics RESult lt t gt on page 176 Evaluation Methods for Frequency and Time Measurements The evaluation methods for frequency and time domain measurements are identical to those in the Spectrum application DEM is iia ii dada ci 32 List EVSIDSU Oinaan adan isos 33 Result SUMMA ada di a ea eee 33 Markor Tabl rette riada 34 Marker Peak Listenn ea 34 Diagram Displays a basic level vs frequency or level vs time diagram of the measured data to evaluate the results graphically This is the default evaluation method Which data is displayed in the diagram depends on the Trace settings Scaling for the y axis can be configured mm CEP E AAA AAA AAA AAA User Manual 1176 9029 02 03 32 R amp S FPS K76 K77 Measurements and Result Display Eh CF 1 95 GHz 1001 pts 2 57 MHz Span 25 7 MHz Remote command LAY ADD 1 RIGH DIAG see LAYout ADD WINDow on page 148
166. gnment 40 Power delta channel table 13 Power delta displaying 14 Power offset to data fields 41 Power requirements Ai Shift channel detection 74 Shift channel table d le E WEE 14 Shifts per cell 66 72 SMS DASIOS i ditte esee EE e tue 40 Shifts remote 138 User specific assignment 40 MINIMUM stenens 97 Marker positioning ar97 Next 97 boo O ag 57 MKR gt ROY tidad DA ESA EL 96 Mobile station see UE user equipment A 7 Modulation Channel detection 5 ier 69 74 Modulation type netter terere 12 MSR ACLR Results remote vicio ads 174 MSRA Analysis interval Operating mode RF measurements MSRA applications CA redai ada 62 65 Capture offset remote ssssssssssssss 188 MSRA Master Data CoVerage inicia iia 41 Multiple Measurement channels Mul ple 2000 assins ertt ias N Next MINIMUM cuotas alli 97 Marker POSINONING sisson onte cin rat i etn 97 Next Peak t E rei e re Radeon 97 Marker positlonilig cue ertt nen rente 97 Noise Rec 53 O OBW Configuration TD SCDMA 85 TD SCDMA results netten tenen 30 Occupied bandwidth sod OBW msi atadas 20 Offset Analysis interval ttr mnes 62 FREQUENCY EE 59 Reference level ient enge dero 55 ll Le E 12 Options Electronic att
167. gt lt MaxDBM gt lt MaxDB gt consecutive number of list range Start time of the individual list range Stop time of the individual list range Average power level in list range in dBm Average power level in list range in dB Maximum power level in list range in dBm Maximum power level in list range in dB Retrieving Results lt MinDBM gt Minimum power level in list range in dBm lt MinDB gt Minimum power level in list range in dB lt LimitCheck gt Result of limit check for the list range 0 Passed 1 Failed lt Reserved1 gt 0 currently not used lt Reserved2 gt 0 currently not used Usage Query only Manual operation See Power vs Time on page 26 10 9 2 Retrieving Trace Results The following commands describe how to retrieve the trace data from the CDA Note that for these measurements only 1 trace per window can be configured FORMat DATA lt Format gt This command selects the data format that is used for transmission of trace data from the R amp S FPS to the controlling computer Note that the command has no effect for data that you send to the R amp S FPS The R amp S FPS automatically recognizes the data it receives regardless of the format Parameters lt Format gt ASCii ASCii format separated by commas This format is almost always suitable regardless of the actual data format However the data is not as compact as other for mats may be REAL 32 32 bit IEEE 754 floating point
168. guring Code Domain Analysis CONFigure CDPower CTABle DATA lt ChannelType gt lt CodeClass gt lt CodeNumber gt lt ModType gt lt MAShift gt lt ActiveFlag gt lt Reserved gt lt Reserved gt This command defines or queries the parameters of the channel table selected or cre ated with the CONFigure CDPower CTABle NAME command To define a channel one row in the channel table you have to enter eight values in the following order lt ChannelType gt lt CodeClass gt lt CodeNumber gt lt ModType gt lt MAShift gt lt Active Flag gt lt Reserved gt lt Reserved gt Return values lt ChannelType gt 0 7 Type of the channel 0 inactive 1 midamble 2 DPCH 3 P CCPCH 4 S CCPCH 5 FPACH 6 PDSCH 7 PICH Note that values 2 to 7 are not distinguished by the application all these values are mapped to the value 2 DPCH lt CodeClass gt 0 4 Code class of the channel The code class specifies the spread ing factor of the channel 0 spreading factor 1 1 spreading factor 2 2 spreading factor 4 3 spreading factor 8 4 spreading factor 16 lt CodeNo gt 1 16 Code number of the channel The number of codes depends on the spreading factor see table 4 2 lt ModType gt Modulation type of the channel 0 invalid for midamble 1 QPSK 2 8PSK 3 16QAM 4 64QAM lt MAShift gt 0 38400 Midamble shift of the channel lt ActiveFlag gt 011 Flag to indica
169. hat are captured by one measurement If more than one set is to be captured see SENSe CDPower SET COUNt on page 129 the number of slots is automatically set to the maximum of 64 Parameters lt CaptureLength gt Range 2 to 64 RST 7 Example SENS CDP IQLength 3 Manual operation See Number of Slots to Capture on page 65 SENSe CDPower QINVert lt State gt This command inverts the Q branch of the signal Parameters ON OFF RST OFF Example CDP QINV ON Activates inversion of Q branch Manual operation See Invert Q on page 64 SENSe CDPower SET COUNt lt NoOfSets gt This command sets the number of sets to be captured and stored in the instrument s memory Refer to Set Count on page 65 for more information 10 5 5 Configuring Code Domain Analysis Parameters lt NoOfSets gt Range 1 to TDS 99 CDMA 490 Increment 1 RST 1 Example CDP SET COUN 12 Sets the number of sets to 12 Mode TDS Manual operation See Set Count on page 65 Synchronization The individual channels in the input signal need to be synchronized to detect timing off sets in the slot spacings These commands are described here Remote commands exclusive to synchronization SENSe CD POWER MSH EE 130 El Ee Ree 130 SENSe CDPOowWetE STSL Olii a a 131 SENSeJCDPower STSL MODE coo 131 SENSe CDPower STSLot ROT ate ccececececeeeeeeeeeeeeeeeeeeeeeee eae aeaaaaa aaa edeeeeseseeeseseeeeeeeees 13
170. he R amp S FPS or limiting the dynamic range by an S N ratio that is too small Example ADJ LEV Usage Event Manual operation See Setting the Reference Level Automatically Auto Level on page 55 10 5 9 Evaluation Range The evaluation range defines which data is evaluated in the result display SENSe CDPower CODE ccoo noir AA 141 Eius RI 142 SENSE ODPOWEESTOT iii anda 142 SENSe CDPower CODE lt CodeNumber gt This command sets the code number The code number refers to spreading factor 16 Parameters lt CodeNumber gt lt numeric value gt RST 0 Example SENS CDP CODE 3 Manual operation See Channel Code Number on page 88 10 5 10 Configuring Code Domain Analysis SENSe CDPower SET lt SetNo gt This command selects a specific set for further analysis The number of sets to capture has to be defined with the SENSe CDPower SET command before using this com mand Parameters lt SetNo gt Range 0 to SET COUNT 1 Increment 1 RST 0 Example CDP SET COUN 10 Selects the 10th set for further analysis Manual operation See Set to Analyze on page 65 SENSe CDPower SLOT lt SlotNumber gt This command selects the slot number to be evaluated The number of slots to capture has to be defined with the SENSe CDPower IOLength command before using this command Parameters lt SlotNumber gt lt numeric value gt Range O to lt Number of slots to capture gt
171. he name of the channel The parameter is optional If you omit it the command works for the currently active channel Commands for Compatibility The following commands are provided for compatibility to other signal analyzers only For new remote control programs use the specified alternative commands CAL Culate lt n KEE 190 CONFigure CDPower BTS PV Time LISTESTA Te ncini aaas 191 SENSe CDPower LEVel ADJUSt ooooccococonocononncnnnnnncnnnnnnnnnnnnnnanononn nono nn nn 192 CALCulate lt n gt FEED lt Evaluation gt This command selects the evaluation method of the measured data that is to be dis played in the specified window Note that this command is maintained for compatibility reasons only Use the LAYout commands for new remote control programs see chapter 10 7 2 Working with Win dows in the Display on page 147 Parameters lt Evaluation gt Type of evaluation you want to display See the table below for available parameter values Example INST SEL BTDS Activates CALC FEED CDP Commands for Compatibility TD SCDMA mode Selects the display of the code domain power Table 10 5 lt Evaluation gt parameter values for TD SCDMA applications String Parameter Enum Parameter Evaluation XTIM CDP BSTReam BITStream Bitstream XTIM CDP COMP CONStel CCONst Composite Constellation lation XPOW CDEPower CDEPower Code Domain Error Power XPO
172. i ade rra itte lucent eet 54 Lnd MODE eieiei 54 Noise Source Switches the supply voltage for an external noise source on the R amp S FPS on or off if available External noise sources are useful when you are measuring power levels that fall below the noise floor of the R amp S FPS itself for example when measuring the noise level of a DUT Remote command DIAGnostic SERVice NSOurce on page 117 Trigger 2 Defines the usage of the variable TRIGGER AUX connector on the rear panel Trigger 1 is INPUT only Note Providing trigger signals as output is described in detail in the R amp S FPS User Manual Input The signal at the connector is used as an external trigger source by the R amp S FPS No further trigger parameters are available for the con nector Output The R amp S FPS sends a trigger signal to the output connector to be used by connected devices Further trigger parameters are available for the connector Remote command OUTPut TRIGger lt port gt LEVel on page 127 OUTPut TRIGger lt port gt DIRection on page 126 Output Type Trigger 2 Type of signal to be sent to the output Device Trig Default Sends a trigger when the R amp S FPS triggers gered Trigger Sends a high level trigger when the R amp S FPS is in Ready for trig Armed ger state This state is indicated by a status bit in the STATus OPERation reg ister bit 5 User Defined Sends a trigger when user selects Send Tri
173. id 9 How to Perform Measurements in TD SCDMA Applications The following step by step instructions demonstrate how to perform measurements with the TD SCDMA applications The following tasks are described e To perform Code Domain Analysis e To define or edit a channel table e To perform a Power vs Time check e To perform an RF measurement e To select the application data for MSRA measurements To perform Code Domain Analysis 1 Press the MODE key and select the TD SCDMA BTS applications for base sta tion tests or TD SCDMA UE for user equipment tests Code Domain Analysis of the input signal is performed by default 2 Select the Overview softkey to display the Overview for Code Domain Analysis 3 Select the Input Frontend button and then the Frequency tab to define the input signal s center frequency 4 Select the Amplitude tab to define the reference level and other settings concern ing the expected power levels 5 Optionally in the Overview select the Trigger button and define a trigger for data acquisition for example an external trigger to start capturing data only when a useful signal is transmitted 6 Select the Signal Capture button and define the acquisition parameters for the input signal i e how many sets and slots are to be captured In MSRA mode define the application data instead see To select the application data for MSRA measurements on page 102 7 Select the Sy
174. igure CDPower CTABle DELete This command deletes the selected channel table Select the channel table you want to delete using the CONFigure CDPower CTABle NAME command Example CONF CDP CTAB NAME CTAB 1 Selects channel table CTAB 1 CONF CDP CTAB DEL Deletes channel table CTAB 1 Usage Event Manual operation See Deleting a Table on page 71 CONFigure CDPower CTABle SELect lt FileName gt This command selects a predefined channel table file for comparison during channel detection Before using this command the RECENT channel table must be switched on first with the command CONFigure CDPower CTABle STATe on page 135 Parameters lt FileName gt RST RECENT Example CONF WCDP CTAB ON Switches the channel table on CONF CDP CTAB SEL CTAB 1 Selects the predefined channel table CTAB 1 Manual operation See Selecting a Table on page 70 CONFigure CDPower CTABle STATe State This command switches the use of a predefined channel table on or off When switched on the measured channel table is stored under the name RECENT and is selected for use After the RECENT channel table is switched on another channel table can be selected with the command CONFigure CDPower CTABle SELect on page 135 10 5 6 3 Configuring Code Domain Analysis Parameters lt State gt ON OFF RST OFF Example CONF CDP CTAB ON Manual operation See Using Predefined Channel Tables on page 70
175. ile are in 32 bit floating point format Secure User Mode In secure user mode settings that are to be stored on the instrument are stored to vol atile memory which is restricted to 256 MB Thus a Memory full error may occur although the hard disk indicates that storage space is still available To store data permanently select an external storage location such as a USB memory device For details see Protecting Data Using the Secure User Mode in the Data Manage ment section of the R amp S FPS User Manual Parameters 1 Configuring the Application Data Range MSRA mode only lt FileName gt String containing the path and name of the target file Example MMEM STOR IQ STAT 1 C R_S Instr user data ig tar Stores the captured UO data to the specified file Manual operation See Q Export on page 44 10 12 Configuring the Application Data Range MSRA mode only In MSRA operating mode only the MSRA Master actually captures data the MSRA applications define an extract of the captured data for analysis referred to as the application data For the TD SCDMA BTS application the application data range is defined by the same commands used to define the signal capture in Signal and Spectrum Analyzer mode see chapter 10 5 4 Signal Capturing on page 128 Be sure to select the correct measurement channel before executing this command In addition a capture offset can be defined i e an offset from the start
176. ils on supported trigger levels see the data sheet Remote command TRIGger SEQuence LEVel EXTernal port on page 125 Code Domain Analysis Trigger Offset Trigger Source Defines the time offset between the trigger event and the start of the measurement offset gt 0 Start of the measurement is delayed offset lt 0 Measurement starts earlier pre trigger Remote command TRIGger SEQuence HOLDOff TIME on page 124 Slope Trigger Source For all trigger sources except time you can define whether triggering occurs when the signal rises to the trigger level or falls down to it Remote command TRIGger SEQuence SLOPe on page 125 Hysteresis Trigger Source Defines the distance in dB to the trigger level that the trigger source must exceed before a trigger event occurs Settting a hysteresis avoids unwanted trigger events caused by noise oscillation around the trigger level This setting is only available for IF Power trigger sources The range of the value is between 3 dB and 50 dB with a step width of 1 dB This setting is available for frequency and time domain measurements only Remote command TRIGger SEQuence IFPower HYSTeresis on page 125 Trigger Holdoff Trigger Source Defines the minimum time in seconds that must pass between two trigger events Trigger events that occur during the holdoff time are ignored This softkey is available for frequency and ti
177. ine Frequency domain TD SCDMA itt tad ere ter p 25 Frontend elle UCL EE 54 Configuration remote esses 117 H Hardware settings CDA Displayed ir tre reges 9 Hysteresis Lower Auto level iio e 77 Trigger be Upper Auto level 2 2 12 rtt ie 77 l 1 Q data Export file binary data description Export file parameter description EXP N J WEE is Exp rting remote ceteri iaa Julien del veras P S Importing remote Importing EXportihng coerente teh c n 43 eine EE 11 KERSA TE 11 IF Power hale GT 61 Impedance Remota cias 116 fupe 51 Importing A n 43 44 46 202 UO data remote 184 SOM mM E A A 44 Inactive Channel Threshold une 69 Input jo o jore inde 51 Coupling remote A 115 pM liada dh 51 E e EE 50 56 Source Configuration softkey ssss 50 Source Radio frequency RF 0 Installation ii d nuire RAN 64 IQ offset ElirmitYating O 90 143 K Keys MKR 95 tee oie ett ete deeds 96 Peak Sapebcht miccional 97 RUN CONT ion RUN SINGLE iieri ta et Eee 75 L Lines Mem p 46 List Evaluation Result display eet neret trn 33 Lower Level Hysteresis ctr 77 M Mag Error vs Chip EV AU ALON rca ee eege 18 Mapping CMANME geesde iros 12 Marker Functions Mentee eege 46 Marker table Configuracion 94 Evaluation method
178. ing TD SCDMA measurements remote 109 Adjacent channel leakage ratio Sem ACER orms Aaa 28 Amplitude Configura rasos 54 Configuration remote ssssse 119 fuper 54 Analysis Code Domain Settings ua 89 Klee 177 REMeasurements ao 88 EE 88 Analysis interval MSRA coi Analysis line A OT AUTO EE Configuration remote vas 122 Displayed cota 9 Electo md P 56 AJ erc 56 ele ue 56 up aiii roda 76 Auto level HYSIETESI S iiae E Reference level Softkey Auto scaling Auto settings e Meastime ALIO nasa roo Meastime Manual Remote control Average count Avg Power Inact Chan e e KT B Bandwidth Coverage MSRA mode sess 41 iT EE 46 Base station SOG pcm D 7 Base transceiver station EE 7 Bits Depending on modulation sess 39 Depending on spreading factor 39 igo P 39 DEE Symbol TEN 39 Bitstream Evaluation Trace results ER 7 C Capture LENgtN ee 65 Capture offset MSRA applications 5 eoe nderit ertet 62 65 une e carrerina Carrier frequency error CCDF Configuration TD SCDMA s 87 TDISCDMA TeSultS ccce ee rr rere co cenae 31 D ee ee ree 10 Analysis settings 4 09 Channel result
179. irst in order to abort the measurement To do so send a Device Clear command from the control instrument to the R amp S FPS on a parallel channel to clear all currently active remote channels Depending on the used interface and protocol send the following commands e Visa viClear Now you can send the ABORt command on the remote channel performing the mea surement Example ABOR INIT IMM Aborts the current measurement and immediately starts a new one Example ABOR WAI INIT IMM Aborts the current measurement and starts a new one once abortion has been completed Usage Event SCPI confirmed INITiate lt n gt CONMeas This command restarts a single measurement that has been stopped using ABORt or finished in single measurement mode The measurement is restarted at the beginning not where the previous measurement was stopped As opposed to INI Tiate lt n gt IMMediate this command does not reset traces in maxhold minhold or average mode Therefore it can be used to continue measure ments using maxhold or averaging functions Suffix lt n gt irrelevant Usage Event Manual operation See Continue Single Sweep on page 75 INITiate lt n gt CONTinuous lt State gt This command controls the measurement mode for an individual measurement chan nel Note that in single measurement mode you can synchronize to the end of the mea surement with OPC OPC or WAI In continuous measurement mo
180. is command is retained for compatibility reasons only For new R amp S FPS programs use SENSe ADJust LEVel on page 141 Programming Examples TD SCDMA BTS The following programming examples are meant to demonstrate the operation of the R amp S FPSTD SCDMA application in a remote environment They are performed with an R amp S FPS equipped with option R amp S FPS K76 Only the commands required to control the R amp S FPS K76 application are provided not the signal generator The measurements are performed using the following devices and accessories e The R amp S FPS with Application Firmware R amp S FPS K76 TD SCDMA BTS e The Vector Signal Generator R amp S SMU with option R amp S SMU B45 digital stand ard 3GPP options R amp S SMU B20 and R amp S SMU B11 required e 1 coaxial cable 500 approx 1 m N connector e 1 coaxial cable 500 approx 1 m BNC connector Test setup 1 Connect the RF output of the R amp S SMU to the input of the R amp S FPS 2 Connect the reference input REF INPUT on the rear panel of the R amp S FPS to the reference input REF on the rear panel of the R amp S SMU coaxial cable with BNC connectors 3 Connect the external trigger input of the R amp S FPS TRIGGER INPUT to the exter nal trigger output of the R amp S SMU TRIGOUT1 of PAR DATA Settings on the R amp S SMU Setting Value Preset Frequency 2 1175 GHz Level 0 dBm Digital standard TDSCDMA 3GPP Lin
181. ite on the R amp S FPS product page at http www2 rohde schwarz com product FPS html gt Downloads gt Firmware Typographical Conventions The following text markers are used throughout this documentation Convention Description Graphical user interface ele All names of graphical user interface elements on the screen such as ments dialog boxes menus options buttons and softkeys are enclosed by quotation marks KEYS Key names are written in capital letters File names commands File names commands coding samples and screen output are distin program code guished by their font Input Input to be entered by the user is displayed in italics Links Links that you can click are displayed in blue font References References to other parts of the documentation are enclosed by quota tion marks Starting the TD SCDMA Application 2 Welcome to the TD SCDMA Applications The TD SCDMA applications add functionality to the R amp S FPS to perform code domain analysis or power measurements according to the TD SCDMA standard R amp S FPS K76 performs Base Transceiver Station BTS measurements for downlink signals In particular the TD SCDMA applications feature e Code domain analysis providing results like code domain power EVM peak code domain error etc e Various power measurements e Spectrum Emission Mask measurements e Statistical CCDF evaluation This user manual contains a
182. k The Spectrum Emission Mask measurement determines the power of the TD SCDMA signal in defined offsets from the carrier and compares the power values with a spec tral mask specified by TD SCDMA For details see chapter 6 3 4 Spectrum Emission Mask on page 84 E User Manual 1176 9029 02 03 29 R amp S FPS K76 K77 Measurements and Result Display 1 Spectrum Emission Mask 1001 pts 800 0 kHz Span 8 0 MHz TD MA DI Ix Bandwidth 1 280 MHz RBW 30 000 kHz REW Frequency Power ABS Power Rel ACimit 1 M 13 24741 GHz 47 08 dBm 28 71 dB 26 08 dB 13 24818 GHz 97 60 dBm 79 23 dB 61 60 dB 13 24861 GHz 74 90 dBm 56 53 dB 43 18 dB 13 24918 GHz 60 79 dBm 42 42 dB 32 79 dB 13 25082 GHz 58 56 dBm 40 19 dB 30 56 dB 13 25140 GHz 74 99 dBm 56 62 dB 43 19 dB 13 25214 GHz 93 80 dBm 75 43 dB 57 80 dB 13 25371 GHz 47 08 dBm 28 71 dB 26 08 dB Fig 3 20 SEM measurement results for TD SCDMA BTS measurement Remote command CONF CDP BTS MEAS ESP see CONFigure CDPower MEASurement on page 113 Querying results CALC MARK FUNC POW RES CPOW see CALCulate lt n gt MARKer lt m gt FUNCtion POWer lt sb gt RESult on page 174 CALC MARK FUNC POW RES ACP see CALCulate lt n gt MARKer lt m gt FUNCtion POWer lt sb gt RESult on page 174 CALCulate lt n gt LIMit lt k gt FAIL on page 174 Occupied Bandwidth The Occupied Bandwidth measurement determines the bandwidth that the signal oc
183. k as described in the base unit manual Note that basic tasks that are also performed in the base unit in the same way are not described here For a description of such tasks see the R amp S FPS User Manual In particular this includes Managing Settings and Results i e storing and loading settings and result data Basic instrument configuration e g checking the system configuration customizing the screen layout or configuring networks and remote operation Using the common status registers The following topics specific to TD SCDMA applications are described here e INTO DWC MON cioe tret td re ote de ade dete tdi tds 104 e Common OUIIXDS cn cid sate senna tee cep Ent terrea vet e Y Re Xa Saeed a pau ruta Ep et 109 e Activating the TD SCDMA Applications wo cocoa ptr rrt poene onere 109 e Selecting a Measurement cst a cene 113 e Configuring Code Domain Analysis eene ntn 114 e Configuring Frequency and Time Domain Measurements sss 144 e Configuring the Result Display reo certe aee 146 Stating a Measurement 156 Retrieving Results 1e cest eere daa ERN ERU an 161 EE 177 e Importing and Exporting UO Data and Results 184 e Configuring the Application Data Range MSRA mode only 186 e Status Registers ARENS NENNEN 188 e Commands for Compatibility ooo 190 e Programming Examples TD SCDMA BIG 192 Introduction Commands are
184. k direction DOWN FORWARD Test model DPCCH_DPDCH960ksps User Manual 1176 9029 02 03 192 Programming Examples TD SCDMA BTS Setting Value User equipment UE 1 Digital standard State ON Scrambling code 0000 The following measurements are described e Measurement 1 Measuring the Signal Channel Power 193 e Measurement 2 Determining the Spectrum Emission Mask 194 e Measurement 3 Measuring the Relative Code Domain Power 195 e Measurement 4 Triggered Measurement of Relative Code Domain Power 197 e Measurement 5 Measuring the Composite EVNM AA 198 e Measurement 6 Determining the Peak Code Domain Error e Measurement 7 Checking the Power vs Time 10 15 14 Measurement 1 Measuring the Signal Channel Power i59 Preparing the instrument Reset the instrument RST Activate a TD SCDMA BTS measurement channel named BTSMeasurement INST CRE NEW BTDS BTSMeasurement Set the reference level to 0 dBm DISP TRAC Y SCAL RLEV 0 Set the center frequency to 2 1175 GHz FREQ CENT 2 1175 GHz Select the power measurement CONF CDP MEAS POW 2 Configuring the measurement Set the slot range to analyze downlink data from slots 3 to 7 switching point 2 SENS POW ACH SLOT STAR 3 SENS POW ACH SLOT STOP 7 Automatically set the reference level and trigger to frame values according
185. l 76 Setting the Reference Level Automatically Auto Level 76 f eEsir mdp 76 PUG SOAS Al Mm 76 Resto Scale VWINGOW kerc AA c Eb adie E ds 77 Resetting the Automatic Measurement Time Meastime Auto 77 Changing the Automatic Measurement Time Meastime Manual 77 Upper Level Hvsteresis A TT bower Laval HysteresiS ceci entre ce nec ade 77 Adjusting all Determinable Settings Automatically Auto All Activates all automatic adjustment functions for the current measurement settings This includes e Auto Level e Auto Scale All on page 76 This function is only available for the MSRA Master not for the applications Remote command SENSe ADJust ALL on page 139 Setting the Reference Level Automatically Auto Level Automatically determines the optimal reference level for the current input data At the same time the internal attenuators are adjusted so the signal to noise ratio is opti mized while signal compression clipping and overload conditions are minimized To determine the optimal reference level a level measurement is performed on the R amp S FPS You can change the measurement time for the level measurement if necessary see Changing the Automatic Measurement Time Meastime Manual on page 77 Remote command SENSe ADJust LEVel on page 141 Auto Scale Window Automatically determines the optimal
186. lable P Data Average power of the slot s data parts total and for each data part P Midamble Power of the slot s midamble Carrier Freq Error The frequency error relative to the center frequency of the analyzer The absolute fre quency error is the sum of the analyzer and DUT frequency error The specified value is averaged for one slot see also Synchronization fails on page 98 IQ Offset DC offset of the signal in the selected slot in 96 IQ Imbalance UO imbalance of signals in the selected slot in 96 Active Channels The number of active channels detected in the signal in the selected slot Both the detected data channels and the control channels are considered active channels RHO Quality parameter RHO for each slot According to the TD SCDMA standard Rho is the normalized correlated power between the measured and the ideally generated reference signal 3 1 2 Code Domain Analysis Parameter Average RCDE Description Average Relative Code Domain Error over all channels The Average RCDE is calcu lated according to release 8 of the standard Composite EVM The error vector magnitude EVM over the total signal in the selected slot The EVM is the root of the ratio of the mean error power to the power of an ideally generated reference signal See also Composite EVM on page 17 Pk CDE 15 ksps The Peak Code Domain Error projects the difference between the meas
187. lex sample 2 1 21 21 Q 21 2 Channel 2 Complex sample 2 Example Element order for complex cartesian data 1 channel This example demonstrates how to store complex cartesian data in float32 format using MATLAB Save vector of complex cartesian I Q data i e iqiqiq N 100 iq randn 1 N 13 randn 1 N fid fopen xyz complex float32 w for k 1 length iq fwrite fid single real iq k float32 fwrite fid single imag iq k float32 end fclose fid List of Remote Commande TD SCDMA SENSO JADJUSCEAL E ur tE neato REA aes 139 SENSe JADJust GONFigure DUR Ati cuina A a 139 SENSe JADJust CONFigure DURation MODE 5 2 nor enini etn rn t netta ian 140 SENSe ADJust CONFigure HYS Teresis LOWr oett rrr rn d a rh nen Eno 140 SENSe JADJust CONFigure HYS Tleresis UPBer i cire a exe Rees CERE Lo CERRAR RT 141 SENSe ADJust LEVel SENSE AVERa g sn gt ENEE eee eet e dea en D Pat c d ade He etd 138 SENSe CDPOWer CODE wssiiki m 141 SENSe CDPower EIE Ter iS TAT6 coni rnt rrr aos 129 EI E e Ree e enge D 133 SENSe JED Power e ue EE 129 SENSe CDPower RTR TEE 192 SENSE JCDPOWerMMAX TE 133 SENSO ICDPOWer MS liliana a ie Rv eic teed eee ela een et 130 SENSe CDPower NORM8allze EE 143 SENSe JEDPower PDIS Play E 143 SENSe CDPower PTS SENSe CDPower QINVert SENSe CDBDPower SGODA cett eterne ni e a dao Ei i e ee e WEE SENSe CDPower SET C O
188. lifier Seting rra id 57 ec m E 57 Presetting Channels irte ee D ded aoc 50 80 alise ETE 62 Programming examples Composite EVM ocio cios Incorrect scrambling code Sg dor listas Power vs TIME 2 iie eere ads 200 Reference frequency we 195 Relative code domain power 195 SEM ciet 194 Signal channel power 193 TD SCDMA 192 Klek Rer TEE 197 R Range SCI estaa aa 57 RCDE ANA sit ida rela ia 11 Reference frequency Programming example aio cii ea eret 195 Reference level AUTO NOVO EE Displayed PET Offset Unit Value nens R f rence e sce de ed decre eri X MESES 90 Refreshing MSRA applications uscite et ret eni 75 MSRA applications remote sess 187 ife cim 75 Remote commands Basics Bu orae ero UO P Dr dn oe teer eade 104 Boolean values 108 Capitalization 106 Character data 108 Data blocks 109 Numeric values 20 107 Obsolete mentira iio aca 190 W ller Ne EE 106 Parameters ae 107 Strings 109 SUITES P lE 106 Restoring Channel settings oerte tentis 50 80 Result display elle ULT Configuration remote SS Result Delen Aere e eR dre Dr E Result displays BIETe rz loire CET 32 List Evaluation Marker table nce en rotae Peak liL oco ott deed rese RES 34 Result
189. log 750 500 This value also affects the unit conversion see Reference Level on page 55 Remote command INPut IMPedance on page 116 YIG Preselector Activates or deactivates the YIG preselector if available on the R amp S FPS An internal YIG preselector at the input of the R amp S FPS ensures that image frequen cies are rejected However this is only possible for a restricted bandwidth In order to use the maximum bandwidth for signal analysis you can deactivate the YIG preselector at the input of the R amp S FPS which may lead to image frequency display Note that the YIG preselector is active only on frequencies greater than 8 GHz There fore switching the YIG preselector on or off has no effect if the frequency is below that value Remote command INPut FILTer YIG STATe on page 115 6 2 3 2 Output Settings The R amp S FPS can provide output to special connectors for other devices For details on connectors refer to the R amp S FPS Getting Started manual Front Rear Panel View chapters o How to provide trigger signals as output is described in detail in the R amp S FPS User Manual Output settings can be configured via the INPUT OUTPUT key or in the Outputs dia log box Output Digital IQ IF Video Output IF Out Frequency Trigger 2 IS OIC irr nome Dore e ve vel a Eee etn pute EE ees 53 IMITA A A A A A sartedentied 53 L Output ets 53 Code Domain Analysis A A 53 L Pulse ORO iei set
190. me domain measurements only Remote command TRIGger SEQuence IFPower HOLDoff on page 124 Capture Offset Trigger Source This setting is only available for applications in MSRA operating mode It has a similar effect as the trigger offset in other measurements it defines the time offset between the capture buffer start and the start of the extracted application data In MSRA mode the offset must be a positive value as the capture buffer starts at the trigger time 0 Remote command SENSe MSRA CAPTure OFFSet on page 188 Trigger 2 Defines the usage of the variable TRIGGER AUX connector on the rear panel Trigger 1 is INPUT only Note Providing trigger signals as output is described in detail in the R amp S FPS User Manual Code Domain Analysis Input The signal at the connector is used as an external trigger source by the R amp S FPS No further trigger parameters are available for the con nector Output The R amp S FPS sends a trigger signal to the output connector to be used by connected devices Further trigger parameters are available for the connector Remote command OUTPut TRIGger lt port gt LEVel on page 127 OUTPut TRIGger lt port gt DIRection on page 126 Output Type Trigger 2 Type of signal to be sent to the output Device Trig Default Sends a trigger when the R amp S FPS triggers gered Trigger Sends a high level trigger when the R amp S FPS is in Ready for trig A
191. ment status and any irregularities are indicated in the status bar beneath the diagram Furthermore the progress of the current operation is displayed in the status bar Code Domain Analysis 3 Measurements and Result Display 3 1 The TD SCDMA applications provide several different measurements for signals according to the TD SCDMA mode The main and default measurement is Code Domain Analysis In addition to the code domain power measurements specified by the TD SCDMA standard the TD SCDMA options offer measurements with predefined settings in the frequency and time domain e g channel power or power vs time mea surements Evaluation methods The captured and processed data for each measurement can be evaluated with vari ous different methods All evaluation methods available for the selected TD SCDMA measurement are displayed in the evaluation bar in SmartGrid mode Evaluation range You can restrict evaluation to a specific channel frame or slot depending on the evalu ation method See chapter 7 1 Evaluation Range on page 88 e Codes Doman ANANSI senera hn eo sur rade db eta Porra du eR die 10 e Frequency and Time Domain Measurements oocccncnnnnnnnnocccnncccnnnnnncnnnnncnnoncnnnnnnons 25 Code Domain Analysis The Code Domain Analysis measurement provides various evaluation methods and result diagrams A signal section containing at least two TD SCDMA subframes is recorded for analysis and then searched through
192. nce IFPower HOLDoff Period This command defines the holding time before the next trigger event Note that this command can be used for any trigger source not just IF Power despite the legacy keyword Note If you perform gated measurements in combination with the IF Power trigger the R amp S FPS ignores the holding time for frequency sweep FFT sweep zero span and UO data measurements Parameters Period Range Os to 10s RST 0s Example TRIG SOUR EXT Sets an external trigger source TRIG IFP HOLD 200 ns Sets the holding time to 200 ns Manual operation See Trigger Holdoff on page 62 Configuring Code Domain Analysis TRIGger SEQuence IFPower HYSTeresis lt Hysteresis gt This command defines the trigger hysteresis which is only available for IF Power trig ger sources Parameters lt Hysteresis gt Range 3dB to 50 dB RST 3 dB Example TRIG SOUR IFP Sets the IF power trigger source TRIG IFP HYST 10DB Sets the hysteresis limit value Manual operation See Hysteresis on page 62 TRIGger SEQuence LEVel EXTernal lt port gt lt TriggerLevel gt This command defines the level the external signal must exceed to cause a trigger event Suffix lt port gt Selects the trigger port 1 trigger port 1 TRIG IN connector on rear panel 2 trigger port 2 TRIG AUX connector on rear panel Parameters lt TriggerLevel gt Range 0 5V to 3 5 V RST 1 4 V Example TRIG LEV
193. nchronization button and define the channel synchronization set tings i e the maximum number of users and the scrambling code to be expected in the input signal 8 Select the Channel Detection button and define how the individual channels are to be detected within the input signal If necessary define a channel table as described in To define or edit a channel table on page 100 9 Select the Display Config button and select the evaluation methods that are of interest to you Arrange them on the display to suit your preferences 10 Exit the SmartGrid mode and select the Overview softkey to display the Over view again R amp S9FPS K76 K77 How to Perform Measurements in TD SCDMA Applications 11 Select the Analysis button in the Overview to configure how the data is evalu ated in the individual result displays e Select the channel slot and set to be evaluated e Configure specific settings for the selected evaluation method s e Optionally configure the trace to display the average over a series of measure ments If necessary increase the Sweep Average Count in the Sweep Con fig dialog box e Configure markers and delta markers to determine deviations and offsets within the results e g when comparing errors or peaks 12 Start a new measurement with the defined settings In MSRA mode you may want to stop the continuous measurement mode by the Sequencer and perform a single data acquisition a Select
194. ndwidth 1 6 MHz The main measurement menus and the configuration Overview for the RF measure ments are identical to the Spectrum application However an additional function is pro vided to adapt the Power measurement to the current TD SCDMA signal Frequency and Time Domain Measurements Adapting the Measurement to the Current Signal You can adapt the measurement range to the current TD SCDMA signal Start Slot Stop Slot Adapting the Measurement to the Current Signal BTS application only Defines the measurement range for Channel Power measurements as a range of slots in the current TD SCDMA signal e g the downlink slots 4 to 6 for a Switching Point 3 Remote command SENSe POWer ACHannel SLOT STARt on page 145 SENSe POWer ACHannel SLOT STOP on page 146 Auto Level 8 Time Adapting the Measurement to the Current Signal Automatically adjusts the reference level and the trigger offset to subframe start to their optimum levels for the current signal This prevents overloading the R amp S FPS When this function is activated current measurements are aborted and resumed after the automatic level detection is finished Remote command SENSe POWer ACHannel AUTO LTIMe on page 145 6 3 3 Channel Power ACLR Measurements Channel Power ACLR measurements are performed as in the Spectrum application with the following predefined settings according to TD SCDMA specifications
195. nic attenuator In Auto mode the settings are defined automatically in Manual mode you can define the mechanical and electronic attenuation separately Note Electronic attenuation is not available for stop frequencies or center frequencies in zero span gt 7 GHz In Auto mode RF attenuation is provided by the electronic attenuator as much as possible to reduce the amount of mechanical switching required Mechanical attenua tion may provide a better signal to noise ratio however When you switch off electronic attenuation the RF attenuation is automatically set to the same mode auto manual as the electronic attenuation was set to Thus the RF attenuation may be set to automatic mode and the full attenuation is provided by the mechanical attenuator if possible Both the electronic and the mechanical attenuation can be varied in 1 dB steps Other entries are rounded to the next lower integer value If the defined reference level cannot be set for the given attenuation the reference level is adjusted accordingly and the warning Limit reached is displayed in the status bar Remote command INPut EATT STATe on page 123 INPut EATT AUTO on page 123 INPut EATT on page 122 Input Settings Some input settings affect the measured amplitude of the signal as well The parameters Input Coupling and Impedance are identical to those in the Input settings See chapter 6 2 3 1 Input Source Settings on page 50
196. o the next higher value Usage Event Manual operation See Search Next Peak on page 97 CALCulate lt n gt DELTamarker lt m gt MAXimum PEAK This command moves a delta marker to the highest level If the marker is not yet active the command first activates the marker Usage Event Manual operation See Peak Search on page 97 CALCulate lt n gt DELTamarker lt m gt MAXimum RIGHt This command moves a delta marker to the next higher value Importing and Exporting UO Data and Results The search includes only measurement values to the right of the current marker posi tion Usage Event CALCulate lt n gt DELTamarker lt m gt MINimum LEFT This command moves a delta marker to the next higher minimum value The search includes only measurement values to the right of the current marker posi tion Usage Event CALCulate lt n gt DELTamarker lt m gt MINimum NEXT This command moves a marker to the next higher minimum value Usage Event Manual operation See Search Next Minimum on page 97 CALCulate lt n gt DELTamarker lt m gt MINimum PEAK This command moves a delta marker to the minimum level If the marker is not yet active the command first activates the marker Usage Event Manual operation See Search Minimum on page 97 CALCulate lt n gt DELTamarker lt m gt MINimum RIGHt This command moves a delta marker to the next higher minimum value The search includes only measurement values to the right of
197. ode resulting from the conversion is marked Example Enter 4 8 Channel 4 is marked at spreading factor 8 35 2 ksps if the channel is active other wise code 7 at spreading factor 16 Remote command SENSe CDPower CODE on page 141 Slot Number Selects the slot for evaluation This affects channel detection as well as the following evaluations see also chapter 3 1 2 Evaluation Methods for Code Domain Analysis on page 12 Bitstream Channel Table Code Domain Power Code Domain Error Power Result Summary Composite Constellation Power vs Symbol Result Summary Symbol Constellation Symbol EVM Remote command SENSe CDPower SLOT on page 142 Set to Analyze Selects a specific set for further analysis The value range depends on the Set Count and is between 0 and Set Count 1 Remote command SENSe CDPower SET on page 142 7 2 Code Domain Analysis Settings Some evaluations provide further settings for the results Code Domain Analysis Settings Code Domai in Settinas a Code Domain Analyzer Common Compensate IQ Offset Code Domain Power Code Power Display Absolute MICA Channel Table Settings Channel Table Sort Order Code DwPTS Analysis Show DwPTS Results Fig 7 1 Code Domain Settings BTS mode Compensate IQ Offset 90 Code Power Disp 90 Ghannel Table Son Order ici 90 Show DwPTS Results BTS mode 91 Show UpP TS Results UE MOUE EE 91 Compensate IQ Offset
198. of the captured data to the start of the application data for the TD SCDMA BTS measurement The analysis interval used by the individual result displays cannot be edited but is determined automatically However you can query the currently used analysis interval for a specific window The analysis line is displayed by default but can be hidden or re positioned Remote commands exclusive to MSRA applications The following commands are only available for MSRA application channels CAL Culate lt n gt MSRA ALINe SHOW cccccccssscceesceccsesecesssseceaeceesegeesaeeeeseaecesseeessanees 186 CAL Culatesm gt MSRAALING TEE 187 CALCulate lt n gt MSRA WINDOoW lt p gt MAL 187 Nimate REPRESA iia 187 SENSeTMSRACGAPT WEE scr AA 188 CAL Culate lt n gt MSRA ALINe SHOW This command defines whether or not the analysis line is displayed in all time based windows in all MSRA applications and the MSRA Master lt n gt is irrelevant Note even if the analysis line display is off the indication whether or not the currently defined line position lies within the analysis interval of the active application remains in the window title bars Parameters lt State gt ON OFF RST ON Configuring the Application Data Range MSRA mode only CALCulate lt n gt MSRA ALINe VALue lt Position gt This command defines the position of the analysis line for all time based windows in all MSRA applications and the MSRA Master lt n
199. ommand moves a marker to the next minimum value Usage Event Manual operation See Search Next Minimum on page 97 CALCulate lt n gt MARKer lt m gt MINimum PEAK This command moves a marker to the minimum level If the marker is not yet active the command first activates the marker Usage Event Manual operation See Search Minimum on page 97 Analysis CALCulate lt n gt MARKer lt m gt MINimum RIGHt This command moves a marker to the next minimum value The search includes only measurement values to the right of the current marker posi tion Usage Event Positioning Delta Markers The following commands position delta markers on the trace CAL Culate nz DEL Tamarkercmz M AimumlEEFT eese nnn nnns 183 CAL Culate nz DEL TamarkercmzMAximumNENT esee enean nni 183 CALOCulate n DELTamarker m MAXimum PEAK eei 183 CAL Culate nz DEL Tamarker mzM Aimum RICH 183 CAL Culate nz DEL Tamarkermz MiNimum LEET 184 CAL Culate nz DEL Tamarker mz MiNimumNENT enne nnns nnns nans 184 CALOCulate n DELTamarker m MlNimum PEAK eee 184 CAL Culate nz DEL Tamarker mz MiNimum RICH 184 CALCulate lt n gt DELTamarker lt m gt MAXimum LEFT This command moves a delta marker to the next higher value The search includes only measurement values to the left of the current marker posi tion Usage Event CALCulate lt n gt DELTamarker lt m gt MAXimum NEXT This command moves a marker t
200. ons They are available from the Power vs Time menu which is displayed when you press the MEAS CONFIG key SNEEN POM cota 81 ROUTE WS E E EEA AE E E ETA 81 Noot SUDNING EE 82 Adapting the Measurement to the Current Gional EE 82 o ee acs ssccasaisasnas hata tacaadensedesdvtnaeindedhadannsnbadnasesiaanielbnndan 82 A EE 82 Switching Point BTS application only The switching point defines the border between uplink slots and downlink slots and is between 1 and 6 In downlink Power vs Time measurements the slots of interest are defined as the range from slot 1 to the slot indicated by the Switching Point In the TD SCDMA UE application the slot of interest is slot 1 which cannot be changed Thus the switching point is irrelevant Remote command CONFigure CDPower BTS PVTime SPOint on page 145 Start Meas Starts measuring the power for the defined number of subframes same effect as pressing the RUN SINGLE key Remote command INIT CONT OFF see INITiate lt n gt CONTinuous on page 157 INITiate lt n gt IMMediate on page 158 Frequency and Time Domain Measurements No of Subframes Defines the number of subframes that the R amp S FPS includes in the measurement The results of the Power vs Time measurement are based on the average of the number of the subframes This setting is identical to the Sweep Average Count on page 75 Remote command CONFigure CDPower BTS PVTime SFRames on page 145 Adapting the Meas
201. ons of the keywords The short form is emphasized in upper case letters Note however that this emphasis only serves the purpose to distinguish the short from the long form in the manual For the instrument the case does not matter Example SENSe FREQuency CENTer is the same as SENS FREQ CENT 10 1 3 Numeric Suffixes Some keywords have a numeric suffix if the command can be applied to multiple instances of an object In that case the suffix selects a particular instance e g a mea surement window Numeric suffixes are indicated by angular brackets lt n gt next to the keyword If you don t quote a suffix for keywords that support one a 1 is assumed Example DISPlay WINDow lt 1 4 gt ZOOM STATe enables the zoom in a particular mea surement window selected by the suffix at WINDow DISPlay WINDow4 ZOOM STATe ON refers to window 4 10 1 4 Optional Keywords Some keywords are optional and are only part of the syntax because of SCPI compli ance You can include them in the header or not Note that if an optional keyword has a numeric suffix and you need to use the suffix you have to include the optional keyword Otherwise the suffix of the missing keyword is assumed to be the value 1 Optional keywords are emphasized with square brackets Example Without a numeric suffix in the optional keyword SENSe FREQuency CENTer is the same as FREQuency CENTer With a
202. or trace 1 in window 3 Usage Query only Measurement Results for TRACe lt n gt DATA TRACE lt n gt The evaluation method selected by the LAY ADD WIND command also affects the results of the trace data query see TRACe lt n gt DATA on page 166 Details on the returned trace data depending on the evaluation method are provided here For details on the graphical results of these evaluation methods see chapter 3 1 2 Evaluation Methods for Code Domain Analysis on page 12 a Bitstream eeir DUM 169 e Connell EE 170 e Code Domain Power Code Domain Error Power 170 e Composite Gornstellation ce iret e tee i e v seeded dn b dus 171 e Composite EVM RMS conocio eod eiri rer reo dud d 171 e Peak Code Domain Error 171 POWER EE 171 FOWwS oo ee 172 e POVESTI NEE 172 IRESUIELSUMIMAN 172 e Symbol Gotstellalgi ai A AR ree nd 172 LE sueco 172 Bitstream When the trace data for this evaluation is queried the bit stream of one slot is transfer red One value is transferred per bit range 0 1 The number of bits depends on the modulation see table 4 8 10 9 3 2 10 9 3 3 Retrieving Results Channel Table For the Channel Table result display the command returns 11 values for each channel in the following order lt ChannelType gt lt CodeClass gt lt CodeNo gt lt ModType gt lt AbsLevel gt lt RelLevel gt lt MAShift gt lt AMiD1 gt lt AMiD
203. orresponding dialog box Select a setting in the channel bar at the top of the measurement channel tab to change a specific setting Preset Channel Select the Preset Channel button in the lower lefthand corner of the Overview to restore all measurement settings in the current channel to their default values Note that the PRESET key restores the entire instrument to its default values and thus closes all measurement channels on the R amp S FPS except for the default Spectrum application channel 6 3 1 3 Frequency and Time Domain Measurements See chapter 6 2 1 Default Settings for Code Domain Analysis on page 47 for details Remote command SYSTem PRESet CHANnel EXECute on page 113 Select Measurement Selects a different measurement to be performed See chapter 3 Measurements and Result Display on page 10 Specifics for The measurement channel may contain several windows for different results Thus the settings indicated in the Overview and configured in the dialog boxes vary depending on the selected window Select an active window from the Specifics for selection list that is displayed in the Overview and in all window specific configuration dialog boxes The Overview and dialog boxes are updated to indicate the settings for the selected window PvT Measurement Settings The following settings and functions are specific to the Power vs Time measurement in the TD SCDMA applicati
204. part of the iq tar file It is recommended that the filename uses the following convention lt xyz gt lt Format gt lt Channels gt ch lt Type gt e xyz a valid Windows file name e Format complex polar or real see Format element e Channels Number of channels see NumberOfChannels element e Type float32 float64 int8 int16 int32 or int64 see DataType element Examples xyz complex 1ch float32 e xyz polar 1ch float64 e xyzreal 1ch int16 xyz complex 16ch int8 UserData Optional contains user application or device specific XML data which is not part of the iq tar specification This element can be used to store additional information e g the hardware configuration User data must be valid XML content PreviewData Optional contains further XML elements that provide a preview of the UO data The preview data is determined by the routine that saves an iq tar file e g R amp S FPS For the definition of this element refer to the RsIqTar xsd schema Note that the preview can be only displayed by current web browsers that have JavaScript enabled and if the XSLT stylesheet open IgTar xml file in web browser xslt is available Example ScalingFactor UO Parameter XML File Specification Data stored as int16 and a desired full scale voltage of 1 V ScalingFactor 1 V maximum int16 value 1 V 215 3 0517578125e 5 V Example PreviewData in XML lt PreviewDat
205. ples the attenuation to the reference level Usage SCPI confirmed Manual operation See Attenuation Mode Value on page 56 INPut EATT lt Attenuation gt This command defines an electronic attenuation manually Automatic mode must be switched off INP EATT AUTO OFF see INPut EATT AUTO on page 123 10 5 3 Configuring Code Domain Analysis If the current reference level is not compatible with an attenuation that has been set manually the command also adjusts the reference level This command requires the electronic attenuation hardware option Parameters lt Attenuation gt attenuation in dB Range see data sheet Increment 1 dB RST 0 dB OFF Example INP EATT AUTO OFF INP EATT 10 dB Manual operation See Using Electronic Attenuation on page 56 INPut EATT AUTO State This command turns automatic selection of the electronic attenuation on and off If on electronic attenuation reduces the mechanical attenuation whenever possible This command requires the electronic attenuation hardware option Parameters State ON OFF 0 1 RST 1 Example INP EATT AUTO OFF Manual operation See Using Electronic Attenuation on page 56 INPut EATT STATe State This command turns the electronic attenuator on and off This command requires the electronic attenuation hardware option Parameters State ON OFF RST OFF Example INP EATT STAT ON Switches the electronic attenuator into
206. ported spreading codes For inactive slots containing no active channels no results are available as no refer ence power is available User Manual 1176 9029 02 03 19 R amp S FPS K76 K77 Measurements and Result Display 1 Peak Code Domain Error 1 Clrw Fig 3 7 Peak Code Domain Error display for TD SCDMA BTS measurements The result display shows the peak error values per slot The slots are displayed according to the detected channels using the following colors e yellow active channel e red selected channel if a channel is made up of more than one code all codes that belong to the channel are red e none no active channels Only the channels detected as being active are used to generate the ideal reference signal If a channel is not detected as being active e g on account of low power the difference between the test signal and the reference signal is too large The result dis play therefore shows a peak code domain error that is too high for all slots Distortions also occur if unassigned codes are wrongly given the status of active chan nel To obtain reliable measurement results select an adequate channel threshold Remote command LAY ADD 1 RIGH PCDerror see LAYout ADD WINDow on page 148 TRACe lt n gt DATA on page 166 Phase Error vs Chip Phase Error vs Chip activates the phase error versus chip display The phase error is displayed for all chips of the slected slot The phase erro
207. program messages that a controller e g a PC sends to the instru ment or software They operate its functions setting commands or events and request information query commands Some commands can only be used in one way others work in two ways setting and query If not indicated otherwise the com mands can be used for settings and queries The syntax of a SCPI command consists of a header and in most cases one or more parameters To use a command as a query you have to append a question mark after the last header element even if the command contains a parameter R amp S FPS K76 K77 Remote Commands for TD SCDMA Measurements A header contains one or more keywords separated by a colon Header and parame ters are separated by a white space ASCII code 0 to 9 11 to 32 decimal e g blank If there is more than one parameter for a command these are separated by a comma from one another Only the most important characteristics that you need to know when working with SCPI commands are described here For a more complete description refer to the User Manual of the R amp S FPS Remote command examples Note that some remote command examples mentioned in this general introduction may not be supported by this particular application 10 1 1 Conventions used in Descriptions Note the following conventions used in the remote command descriptions e Command usage If not specified otherwise commands can be used both for
208. r Manual Suffix n irrelevant Starting a Measurement Parameters lt Mode gt SINGle Each measurement is performed once regardless of the chan nel s sweep mode considering each channels sweep count until all measurements in all active channels have been per formed CONTinuous The measurements in each active channel are performed one after the other repeatedly regardless of the channel s sweep mode in the same order until the Sequencer is stopped CDEFined First a single sequence is performed Then only those channels in continuous sweep mode INIT CONT ON are repeated RST CONTinuous Example SYST SEQ ON Activates the Sequencer INIT SEQ MODE SING Sets single sequence mode so each active measurement will be performed once INIT SEQ IMM Starts the sequential measurements INITiate lt n gt SEQuencer REFResh ALL This function is only available if the Sequencer is deactivated SYSTem SEQuencer SYST SEQ OFF and only in MSRA mode The data in the capture buffer is re evaluated by all active MSRA applications The suffix lt n gt is irrelevant Example SYST SEQ OFF Deactivates the scheduler INIT CONT OFF Switches to single sweep mode INIT WAI Starts a new data measurement and waits for the end of the Sweep INIT SEQ REFR Refreshes the display for all channels Usage Event SYSTem SEQuencer State This command turns the Sequencer on and off The Sequence
209. r is calculated by the difference of the phase of received signal and phase of reference signal The reference signal is estimated from the channel configu ration of all active channels The phase error is given in degrees in a range of 180 to 180 User Manual 1176 9029 02 03 20 R amp S FPS K76 K77 Measurements and Result Display CHIP MAGNITUDE CHIP EVM A E Recdived P Reference Chip P I 74 i N CH P PHASE RROR i i I i i Ij i i I d i I I i i I i I i T i I I i T Fig 3 8 Calculating the magnitude phase and vector error per chip PHI as ax N 2560 ke 0 N 1 where PHI phase error of chip number k Sk complex chip value of received signal Xk complex chip value of reference signal k index number of the evaluated chip N number of chips at each CPICH slot x phase calculation of a complex value 1 Phase Error vs Chip Chip 2559 Remote command LAY ADD 1 RIGH PECHip see LAYout ADD WINDow on page 148 TRACe lt n gt DATA TRACE lt 1 4 gt Power vs Slot The Power vs Slot evaluation displays the power of the selected channel for each slot The power is displayed either absolute or relative to the total power of the data parts of the signal The measurement evaluates a single channel over all slots User Manual 1176 9029 02 03 21 R amp S FPS K76 K77 Measurements and Result Display
210. r must be active before any other Sequencer commands INIT SEQ are executed otherwise an error will occur Retrieving Results A detailed programming example is provided in the Operating Modes chapter in the R amp S FPS User Manual Parameters lt State gt ON OFF 0 1 ON 1 The Sequencer is activated and a sequential measurement is started immediately OFF 0 The Sequencer is deactivated Any running sequential measure ments are stopped Further Sequencer commands INIT SEQ are not available RST 0 Example SYST SEQ ON Activates the Sequencer INIT SEQ MODE SING Sets single Sequencer mode so each active measurement will be performed once INIT SEQ IMM Starts the sequential measurements SYST SEQ OFF 10 9 Retrieving Results The following commands are required to retrieve the results from a TD SCDMA mea surement in a remote environment When the channel type is required as a parameter by a remote command or provided as a result for a remote query abbreviations or assignments to a numeric value are used as described in chapter 10 5 6 Channel Detection on page 133 e Retrieving Calculated Measurement Results 161 e Retrieving Trace ELE 165 e Measurement Results for TRACe lt n gt DATA TRACEems eese 169 e Exporting Trace Results ieiiuunecaieeeesece c eeet tentent tune aep thea aan rana DLE AR 173 e Retrieving RF Results eee eite A re es 174 10 9 1 Retrieving Calc
211. range and reference level position to be dis played for the current measurement settings in the currently selected window No new measurement is performed Auto Scale All Automatically determines the optimal range and reference level position to be dis played for the current measurement settings in all displayed diagrams No new mea surement is performed 6 2 12 Code Domain Analysis Restore Scale Window Restores the default scale settings in the currently selected window Resetting the Automatic Measurement Time Meastime Auto Resets the measurement duration for automatic settings to the default value Remote command SENSe ADJust CONFigure DURation MODE on page 140 Changing the Automatic Measurement Time Meastime Manual This function allows you to change the measurement duration for automatic setting adjustments Enter the value in seconds Remote command SENSe ADJust CONFigure DURation MODE on page 140 SENSe ADJust CONFigure DURation on page 139 Upper Level Hysteresis When the reference level is adjusted automatically using the Auto Level function the internal attenuators and the preamplifier are also adjusted In order to avoid frequent adaptation due to small changes in the input signal you can define a hysteresis This setting defines an upper threshold the signal must exceed compared to the last mea surement before the reference level is adapted automatically Remote command SENSe
212. red and the dialog box is closed The new channel table is included in the Predefined Tables list in the Channel Detection dialog box User Manual 1176 9029 02 03 100 7 To activate the use of the new channel table a Select the table in the Predefined Tables list b Select the Select button A checkmark is displayed next to the selected table c Toggle the Use Predefined Channel Table setting to Predefined d Close the dialog box e Start a new measurement To perform a Power vs Time check The Power vs Time measurement checks the signal power in the time domain against a transmission power mask defined by the TD SCDMA specification for details see Power vs Time on page 26 1 Press the MODE key and select the TD SCDMA BTS applications for base sta tion tests or TD SCDMA UE for user equipment tests Code Domain Analysis of the input signal is performed by default 2 Switch to the Power vs Time measurement a Press the MEAS key b In the Select Measurement dialog box select the Power vs Time button 3 For downlink measurements BTS application only Select the Switching Point softkey to define the slot which separates the uplink from the downlink data Only the slots for downlink data are measured and checked against the transmission power mask For uplink measurements the application always measures slot 1 thus the switch ing point is irrelevant 4 For downlink measurements BTS
213. requency E 51 Radio Frequency Input The default input source for the R amp S FPS is Radio Frequency i e the signal at the RF INPUT connector of the R amp S FPS If no additional options are installed this is the only available input source Input al Source Input D E Frequency Input Coupling Digital IQ Impedance YIG Preselector Radio Frequency State 51 Input ee re Toro EE 51 A A a a E A a a a 51 de DT 52 Radio Frequency State Activates input from the RF INPUT connector Remote command INPut SELect on page 116 Input Coupling The RF input of the R amp S FPS can be coupled by alternating current AC or direct cur rent DC AC coupling blocks any DC voltage from the input signal This is the default setting to prevent damage to the instrument Very low frequencies in the input signal may be dis torted However some specifications require DC coupling In this case you must protect the instrument from damaging DC input voltages manually For details refer to the data sheet Remote command INPut COUPling on page 115 Impedance The reference impedance for the measured levels of the R amp S FPS can be set to 50 O or75 0 Code Domain Analysis 75 Q should be selected if the 50 Q input impedance is transformed to a higher impe dance using a 75 Q adapter of the RAZ type 25 Q in series to the input impedance of the instrument The correction value in this case is 1 76 dB 10
214. ret Pr ea Ert AA 73 General Channel Detection Settings Channel detection settings are configured in the Channel Detection dialog box which is displayed when you select the Channel Detection button in the configuration Over view Data Rate Inactive Channel Threshold 40 0 dB Max Mod Setting Max Modulation Predefined Channel Tables Use Predefined Channel Table Predefined AutoSearch Predefined Tables New none Channel Tables lt none gt Fig 6 1 Channel detection configuration for TD SCDMA BTS application Inactive Channel Threshold 2 a di co b ee bet eot becas 69 Max M dulatiO EE DO 70 Using Predefined Channel Tables err rer een Inactive Channel Threshold Defines the minimum power that a single channel must have compared to the total sig nal in order to be recognized as an active channel Remote command SENSe CDPower ICTReshold on page 133 Max Modulation Defines the highest modulation to be considered in the automatic channel search In low SNR environments it may be necessary to limit the channel search to lower modu lations than 64QAM The following types are available 6 2 9 2 Code Domain Analysis QPSK 8PSK 16QAM 64QAM Remote command SENSe CDPower MMAX on page 133 Using Predefined Channel Tables Defines the channel search mode Predefined Compares the input signal to the predefined channel table selected in the Predefined Tables list
215. ric value gt RST depends on the result display The unit and range depend on the result display Example DISP TRAC Y MIN 60 DISP TRAC Y MAX 0 Defines the y axis with a minimum value of 60 and maximum value of 0 Manual operation See Y Maximum Y Minimum on page 57 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe PDIVision Value This remote command determines the grid spacing on the Y axis for all diagrams where possible The suffix lt t gt is irrelevant Parameters lt Value gt numeric value WITHOUT UNIT unit according to the result dis play Defines the range per division total range 10 lt Value gt RST depends on the result display Example DISP TRAC Y PDIV 10 Sets the grid spacing to 10 units e g dB per division DISPlay WINDow lt n gt TRACe lt t gt Y SCALe RLEVel lt ReferenceLevel gt This command defines the reference level for all traces lt t gt is irrelevant Example DISP TRAC Y RLEV 60dBm Usage SCPI confirmed Manual operation See Reference Level on page 55 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe RLEVel OFFSet lt Offset gt This command defines a reference level offset for all traces lt t gt is irrelevant Parameters lt Offset gt Range 200 dB to 200 dB RST 0dB Example DISP TRAC Y RLEV OFFS 10dB Configuring Code Domain Analysis Manual operation See Shifting the Display Offset on page 55 DISPlay WINDow lt n gt TRAC
216. rigger In Out Trigger 2 e Output Output Type User Defined D Level Low Pulse Length 100 0 us Send Trigger JL Trigger 3 Input e Output For step by step instructions on configuring triggered measurements see the main R amp S FPS User Manual Nolet ee 60 o A DR 60 Bee 61 L Eutenial Tigger Uan 61 Pe M ET 61 Exi Er MONROE TTD eege 61 bt ii aiii 62 B A METER 62 A A aban Nace soe ENTE 62 L Trigger HA coi 62 A OSE MONTE MT 62 Mig d Pm 62 L Output Typis eniti tra sa btt rk did ct ka dd don 63 uo Ae NE 63 EPS EE 63 L Send MER NOR 63 Trigger Source The trigger settings define the beginning of a measurement Trigger Source Trigger Source Defines the trigger source If a trigger source other than Free Run is set TRG is displayed in the channel bar and the trigger source is indicated Remote command TRIGger SEQuence SOURce on page 126 Code Domain Analysis Free Run Trigger Source Trigger Source No trigger source is considered Data acquisition is started manually or automatically and continues until stopped explicitely Remote command TRIG SOUR IMM see TRIGger SEQuence SOURce on page 126 External Trigger 1 2 Trigger Source Trigger Source Data acquisition starts when the TTL signal fed into the specified input connector meets or exceeds the specified trigger level See Trigger Level on page 61 Note The External Trigger 1 softkey automatically s
217. riginal Display on page 78 See R Deactivating Zoom Selection mode on page 78 Using the Multiple Zoom D lSblawvl WiNDow nztZOOMMUL Tiple zzoomzAREA eene nennen 155 DiSblavlfWiNDow nztZOOM ML Tiple zoomzGTATe non nannnnannnannnn 156 DISPlay WINDow lt n gt Z00M MULTiple lt zoom gt AREA lt x1 gt lt y1 gt lt x2 gt lt y2 gt This command defines the zoom area for a multiple zoom To define a zoom area you first have to turn the zoom on 1 Frequency Sweep iRm e 1 origin of coordinate system x1 0 y1 0 2 end point of system x2 100 y2 100 3 zoom area e g x1 60 y1 30 x2 80 y2 75 Suffix lt zoom gt 1 4 Selects the zoom window Parameters lt x1 gt lt y1 gt Diagram coordinates in of the complete diagram that define lt x2 gt lt y2 gt the zoom area The lower left corner is the origin of coordinate system The upper right corner is the end point of the system Range 0 to 100 Default unit PCT Manual operation See Multiple Zoom on page 78 E User Manual 1176 9029 02 03 155 Starting a Measurement DISPlay WINDow lt n gt ZOOM MULTiple lt zoom gt STATe State This command turns the mutliple zoom on and off Suffix lt zoom gt 1 4 Selects the zoom window If you turn off one of the zoom windows all subsequent zoom windows move up one position Parameters lt State gt ON OFF RST OFF Manual operation See Multiple Zoom on page 78
218. rmed ger state This state is indicated by a status bit in the STATus OPERation reg ister bit 5 User Defined Sends a trigger when user selects Send Trigger button In this case further parameters are available for the output signal Remote command OUTPut TRIGger lt port gt OTYPe on page 127 Level Output Type Trigger 2 Defines whether a constant high 1 or low 0 signal is sent to the output connector Remote command OUTPut TRIGger lt port gt LEVel on page 127 Pulse Length Output Type Trigger 2 Defines the length of the pulse sent as a trigger to the output connector Remote command OUTPut TRIGger lt port gt PULSe LENGth on page 128 Send Trigger Output Type Trigger 2 Sends a user defined trigger to the output connector immediately Note that the trigger pulse level is always opposite to the constant signal level defined by the output Level setting e g for Level High a constant high signal is output to the connector until the Send Trigger button is selected Then a low pulse is sent Which pulse level will be sent is indicated by a graphic on the button Remote command OUTPut TRIGger lt port gt PULSe IMMediate on page 128 Code Domain Analysis 6 2 6 Signal Capture Data Acquisition How much and how data is captured from the input signal are defined in the Signal Capture settings a MN Common Settings Sample Rate 2 MHz Invert Q RRC Filter C
219. rogramming Examples TD SCDMA BTS 3 Retrieving results Retrieve the trace data of the composite EVM measurementTRAC2 DATA TRACE1 Result 0 000000000 5 876136422E 001 1 000000000 5 916179419E 001 2 000000000 5 949081182E 001 Loss Table 10 9 Trace results for Composite EVM measurement CPICH Slot number EVM 0 5 876136422E 001 1 5 916179419E 001 2 5 949081182E 001 10 15 6 Measurement 6 Determining the Peak Code Domain Error A Preparing the instrument Reset the instrument RST Activate a TD SCDMA BTS measurement channel named BTSMeasurement INST CRE NEW BTDS BTSMeasurement Set the reference level to 10 dBm DISP TRAC Y SCAL RLEV 10 Set the center frequency to 2 1175 GHz FREQ CENT 2 1175 GHz Configuring the measurement Set the trigger source to the external trigger TRIGGER INPUT connector TRIG SOUR EXT Replace the second measurement window Result Summary by the Peak Code Domain Error evaluation LAY REPL 2 PCD Optimize the scaling of the y axis for the Composite EVM measurement DISP WIND2 TRAC Y SCAL AUTO ONCE 55e Performing the measurement Stops continuous sweep INIT CONT OFF Sets the number of sweeps to be performed to 10 SWE COUN 10 Start a new measurement with 10 sweeps and wait for the end INIT WAI Programming Examples TD SC
220. ror value for each symbol of the slot of a special channel Positive values of symbol magnitude error indicate a symbol magnitude that is larger than the expected ideal value negative symbol magnitude errors indicate a symbol magnitude that is less than the ideal one The symbol magnitude error is the difference between the magnitude of the received symbol and that of the reference symbol rela ted to the magnitude of the reference symbol 1 Symbol Magnitude Error Symb 0 2 Symb Symb 19 Fig 3 14 Symbol Magnitude Error display for TD SCDMA BTS measurements Remote command LAY ADD 1 RIGH SMERror see LAYout ADD WINDow on page 148 TRACe lt n gt DATA TRACE lt 1 4 gt User Manual 1176 9029 02 03 24 R amp S FPS K76 K77 Measurements and Result Display Eh Symbol Phase Error The Symbol Phase Error is calculated analogous to symbol EVM The result is one symbol phase error value for each symbol of the slot of a special channel Positive val ues of symbol phase error indicate a symbol phase that is larger than the expected ideal value negative symbol phase errors indicate a symbol phase that is less than the ideal one 1 Symbol Phase Error Symb 0 2 Symb Symb 19 Fig 3 15 Symbol Phase Error display for TD SCDMA BTS measurements Remote command LAY ADD 1 RIGH SPERror see LAYout ADD WINDow on page 148 TRACe lt n gt DATA TRACE lt 1 4 gt 3 1 3 CDA Measurements in MSRA Operating Mode
221. rt rere ner teda ne ee P a n EF FEED REX Pea 185 MMEMory STOResn TRAGS inrer etre rai 173 OUTPUEMRIGGErSpOn DIRCCHON E 126 OUTPut TRIGgersport l EVel ctor rtr teer eze 127 eg Gelle E Ee bd E 127 OUTPut TRIGger port PULSe IMMediate conet etre Ad 128 OUTPut TRIGger port PULSe LENGEh caer ia a 128 GE ME E TEE dee TR en KE 189 STATUus QUEStion ble SYNGC ENABIO 2 itc t ea 189 STATus QUEStionable S YNC NTRariitiOn rotor rt teer eere cineasta 190 STATus QUEStionable SYNC PTRansition essent ener nennen nennen 190 STATUus QUEStionable SYNG EVENI I itte ayaa teen 189 SYSTem PRESet CHANnel EXECute SS Tem CUS INC TRAGesnsEDATA X ctt titt eer e eto tp ec tte eet gute a ce peu eee P d a one e uv 169 ENEE RE RE 166 RRE ee E ene Re ei E Re D A RE TRIGger SEQuerice IFPower HOLDBDJoflF inrer trt rentrer en rr epe n rere erre eon TRIGger SEQuence IFPower HYSTeresis trn terr nne irr rd P Peer TRIGger SEQuence LEVel EXTernal lt port gt si TRIGger SEQUENCE SLOBe rrt tener AAA Eed AAA EAR TRIGge r SEQuence SOURCe irm prm aa Index A Aborting SWOOP NO 74 75 AC DC coupling icai deste itin entera tea 51 ACLR Configuration TD SCDMA ecceseeseeeesenteeteenteees 83 Results remote v i TD SCDMA TE 28 Activat
222. s ven 12 Configuring mu 46 Configuring remote 114 Evaluation settings remote 142 TE UE 11 tert le ERE ontario 99 Results GDEP os Evaluation CDP I DE TOT RETIRER E 15 Programming examiple rrr ntt 195 dee 170 Center frequency nc E 58 ir M M 58 Channel Power measurement Configuration 82 Channel bandwidth MSRAMOJe srta ents 41 Channel detection COMMON E 68 hutore ni Error ecc 69 Remote control 133 Search mode ses O Softkey 68 Channel number in lO Channel power ss e ACGLR see Eegeregie EE EEEE 28 Programming example eere 193 Channel table Ore m iT le 14 Evaluation sees SOMO 90 Channel tables COMMUN HE 100 Configuring remote seen 136 COPYING Terisi zc Creating oer 70 Creating from input deo Deleting ista A Details end Editino eeben 71 Managing UE 70 Managing remote zm Predefined E 70 SSIS CUNG T 70 EE Trace results Channel types Gonfig ring In table circa 73 Channelization codes see Codes ince cortinas Ecos edo As 37 Channels Active 69 74 Active threshold iterasi 2 nein es 133 EE 37 Characteristics 38 Data rates 39 Detection 297 BEE eret eot a tree re
223. s lt CouplingType gt AC AC coupling DC DC coupling RST AC Example INP COUP DC Usage SCPI confirmed Manual operation See Input Coupling on page 51 INPut DPATh lt State gt Enables or disables the use of the direct path for frequencies close to 0 Hz Parameters lt State gt AUTO 1 Default the direct path is used automatically for frequencies close to 0 Hz OFF 0 The analog mixer path is always used RST 1 Example INP DPAT OFF Usage SCPI confirmed INPut FILTer YIG STATe State This command turns the YIG preselector on and off 10 5 1 2 0 Configuring Code Domain Analysis Note the special conditions and restrictions for the YIG filter described in YIG Prese lector on page 52 Parameters State ON OFF 0 1 RST 1 0 for 1 Q Analyzer GSM VSA and MC Group Delay measurements Example INP FILT YIG OFF Deactivates the YIG preselector Manual operation See YIG Preselector on page 52 INPut IMPedance Impedance This command selects the nominal input impedance of the RF input 75 Q should be selected if the 50 O input impedance is transformed to a higher impe dance using a matching pad of the RAZ type 7 25 Q in series to the input impedance of the instrument The power loss correction value in this case is 1 76 dB 10 log 750 500 Parameters Impedance 50 75 RST 50 Q Example INP IMP 75 Usage SCPI confirmed
224. s are saved on exiting and are restored on re entering this measurement e Reference level and reference level offset e Sweep time e Span The main measurement menus and the configuration Overview for the RF measure ments are identical to the Spectrum application However an additional function is pro vided to adapt the SEM measurement to the current TD SCDMA signal Adapting the Measurement to the Current Signal You can adapt the measurement range to the current TD SCDMA signal Start Slot Stop Slot Adapting the Measurement to the Current Signal BTS application only Defines the measurement range for Channel Power measurements as a range of slots in the current TD SCDMA signal e g the downlink slots 4 to 6 for a Switching Point 3 Remote command SENSe POWer ACHannel SLOT STARt on page 145 SENSe POWer ACHannel SLOT STOP on page 146 Auto Level 8 Time Adapting the Measurement to the Current Signal Automatically adjusts the reference level and the trigger offset to subframe start to their optimum levels for the current signal This prevents overloading the R amp S FPS When this function is activated current measurements are aborted and resumed after the automatic level detection is finished Remote command SENSe POWer ACHannel AUTO LTIMe on page 145 6 3 5 Occupied Bandwidth The Occupied Bandwidth measurement determines the bandwidth that the signal occu pies The occupied
225. s for PvT Measurements By default the following settings are used for a Power vs Time measurement in the TD SCDMA BTS application Parameter Default Value Span Zero Span Sweep Time 2 4 ms RBW 1 28 MHz VBW 10 MHz Frequency and Time Domain Measurements Parameter Default Value Trace Mode Average Switching point 3 BTS application only Number of subframes 100 6 3 1 2 PvT Configuration Overview For Power vs Time measurements the Overview provides quick access to the follow ing configuration dialog boxes listed in the recommended order of processing The Signal Description Signal Capture and Channel Detection buttons indicated in the Overview are not available for TD SCDMA Power vs Time measurements 1 Select Measurement See chapter 3 Measurements and Result Display on page 10 2 Input Frontend See chapter 6 2 3 Data Input and Output Settings on page 50 3 Optionally Trigger See chapter 6 2 5 Trigger Settings on page 59 4 Synchronization See chapter 6 2 8 Synchronization on page 66 5 Analysis See chapter 7 Analysis on page 88 6 Display Configuration See chapter 6 1 Result Display Configuration on page 45 The Span Lines and Marker Functions menus are not available for Power vs Time measurements in TD SCDMA applications To configure settings P Select any button in the Overview to open the c
226. s of the Code Domain Analysis are activated Table 6 1 Default settings for TD SCDMA channels Predefined tables Parameter Value Sweep CONTINUOUS Channel detection mode AUTOSEARCH Trigger settings FREE RUN Trigger offset 0 Symbol rate 17 6 ksps Number of sets to capture 1 Set to analyze 0 Scrambling code 0 MA shift cell 16 Synchronization P CCPCH Max modulation 64QAM Auto search Selected channel 1 16 Selected slot number 0 UO offset compensation Off Evaluations Window 1 Code Domain Power Relative Window 2 Result Summary Configuration Overview Throughout the measurement channel configuration an overview of the most important currently defined settings is provided in the Overview The Overview is displayed when you select the Overview icon which is available at the bottom of all softkey menus Code Domain Analysis MultiView Spectrum SCDMA B TD SCDMA UE RUN uA Ee A Max Modulation nnel Detection Predet ER CA 1 Code Domain Power H In addition to the main measurement settings the Overview provides quick access to the main settings dialog boxes Thus you can easily configure an entire measurement channel from input over processing to evaluation by stepping through the dialog boxes as indicated in the Overview selected measurement For frequency and time domain measurements see chap D The available settings and
227. sed to storing trace data which may be averaged or restricted to peak values UO data is stored as it was captured without further processing The data is stored as complex values in 32 bit floating point format Multi channel data is not supported The UO data is stored in a format with the file extension iq tar For a detailed description see the R amp S FPS l Q Analyzer and l Q Input User Manual Export only in MSRA mode In MSRA mode UO data can only be exported to other applications l Q data cannot be imported to the MSRA Master or any MSRA applications e IMPOR EXPOM FHDGHOS iccirco ii ai ii 43 5 1 Import Export Functions The following import and export functions are available via softkeys in the Save Recall menu which is displayed when you select the Save or Open icon in the tool p bar Some functions for particular data types are also available via softkeys or dialog boxes in the corresponding menus e g trace data or marker peak lists For a description of the other functions in the Save Recall menu see the R amp S FPS User Manual nyc m AA A Mr diges 44 el TT siete inaia ATR a st ce a 44 ERD OIE fe p E 44 EEN A4 Import Export Functions Import Provides functions to import data UO Import Import Opens a file selection dialog box to select an import file that contains IQ data This function is only available in single sweep mode and only in applications that process UO data such
228. ssion and adjacent channel The order is power of the transmission channels power of adjacent channel lower upper e power of alternate channels ower upper MSR ACLR results For MSR ACLR measurements the order of the returned results is slightly different power of the transmission channels total power of the transmission channels for each sub block power of adjacent channels lower upper power of alternate channels lower upper power of gap channels lower1 upper1 lower2 upper2 The unit of the return values depends on the scaling of the y axis logarithmic scaling returns the power in the current unit linear scaling returns the power in W CN Carrier to noise measurements Returns the C N ratio in dB CNO Carrier to noise measurements Returns the C N ratio referenced to a 1 Hz bandwidth in dBm Hz CPOWer Channel power measurements Returns the channel power The unit of the return values depends on the scaling of the y axis logarithmic scaling returns the power in the current unit linear scaling returns the power in W For SEM measurements the return value is the channel power of the reference range in the specified sub block PPOWer Peak power measurements Returns the peak power The unit of the return values depends on the scaling of the y axis logarithmic scaling returns the power in the current unit linear scaling returns the power in W For SEM measurements the return
229. surement e Reference level and reference level offset e Analysis bandwidth e Number of samples The main measurement menus and the configuration Overview for the RF measure ments are identical to the Spectrum application However an additional function is pro vided to adapt the CCDF measurement to the current TD SCDMA signal Adapting the Measurement to the Current Signal You can adapt the measurement range to the current TD SCDMA signal Start Slot Stop Slot Adapting the Measurement to the Current Signal BTS application only Defines the measurement range for Channel Power measurements as a range of slots in the current TD SCDMA signal e g the downlink slots 4 to 6 for a Switching Point 3 Remote command SENSe POWer ACHannel SLOT STARt on page 145 SENSe POWer ACHannel SLOT STOP on page 146 Auto Level amp Time Adapting the Measurement to the Current Signal Automatically adjusts the reference level and the trigger offset to subframe start to their optimum levels for the current signal This prevents overloading the R amp S FPS When this function is activated current measurements are aborted and resumed after the automatic level detection is finished Remote command SENSe POWer ACHannel AUTO LTIMe on page 145 Evaluation Range 7 Analysis General result analysis settings concerning the evaluation range trace markers etc can be configured via the Analysis bu
230. t displays that refer to channels the currently selected channel is highligh ted in the diagram You select a channel by entering a channel number and spreading factor in the Evaluation Range settings The specified channel is selected and marked in red in the corresponding result dis plays if active If no spreading factor is specified the spreading factor 16 is assumed For inactive unused channels the code on the basis of the spreading factor 16 is highlighted 4 4 Data Fields and Midambles Example Enter 4 8 Channel 4 is marked at spreading factor 8 35 2 ksps if the channel is active other wise code 7 at spreading factor 16 Data Fields and Midambles Each slot consists of 864 chips of which 704 are used to transmit data The data is divided into two data fields with 352 chips each The midamble consisting of the remaining 144 chips is located between the two data fields A guard period of 16 chips completes the slot Time slot TSx 0 675 ms 864 chips Data field 1 Midamble Data field 2 GP 352 chips 144 chips 352 chips 16 chips Fig 4 2 TD SCDMA slot structure Midamble shifts The midamble is a known symbol sequence which can be used to synchronize the sig nal in the slot and to distinguish the data from individual users in a single slot Different users can be separated by their different time shifts of the same basic midamble sequence For each midamble shift the known symbol sequence is ro
231. t part of the status register to be reported in the summary bit If a bit is 1 in the enable register and its associated event bit transitions to true a positive transition will occur in the summary bit reported to the next higher level Parameters lt BitDefinition gt Range 0 to 65535 lt ChannelName gt String containing the name of the channel The parameter is optional If you omit it the command works for the currently active channel 10 14 Commands for Compatibility STATus QUEStionable SYNC NTRansition lt BitDefinition gt lt ChannelName gt This command controls the Negative TRansition part of a register Setting a bit causes a 1 to 0 transition in the corresponding bit of the associated regis ter The transition also writes a 1 into the associated bit of the corresponding EVENt register Parameters lt BitDefinition gt Range 0 to 65535 lt ChannelName gt String containing the name of the channel The parameter is optional If you omit it the command works for the currently active channel STATus QUEStionable SYNC PTRansition lt BitDefinition gt lt ChannelName gt These commands control the Positive TRansition part of a register Setting a bit causes a 0 to 1 transition in the corresponding bit of the associated regis ter The transition also writes a 1 into the associated bit of the corresponding EVENt register Parameters lt BitDefinition gt Range 0 to 65535 lt ChannelName gt String containing t
232. tated cyclically by a defined number of chips The maximum number of possible midamble shifts defines the maximum number of possible users in a single slot Each user is thus identified by a particular time slot and a particular code on a particu lar carrier frequency Midamble assignment A midamble is assigned to each code channel by the transmission side Different meth ods of assigning midambles to code channels are available e default midamble assignment Specific midambles are assigned to each channelization code according to a standard specific rule e user specific midamble assignment Each code channel is assigned an individual midamble code higher communica tion layers must determine which midamble belongs to which channelization code e common midamble assignment All code channels share a common midamble R amp S FPS K76 K77 Measurement Basics E The midamble to be inserted between the data fields in a slot is generated by superim posing the individual midambles of the codes The TD SCDMA specifications require that the power of the midamble and the power of the data fields for a single slot must be identical When using the default midamble assignment this means that each individual midamble is transmitted with the same power as its assigned channelization code For common midamble assignment this means the single midamble is transmitted with the same power as the data fields For user specific assignment the individu
233. te whether a channel is active 1 or not 0 10 5 7 Configuring Code Domain Analysis lt Reserved1 gt Placeholder values Currently not used lt Reserved2 gt Example CONF CDP CTAB NAME CTAB 1 Selects or creates channel table CTAB_1 CONF CDP CTAB DATA V2 4 15 LLL 00 2 42 LL y Lo 0 7 00 Defines two data channels with QPSK modulation Manual operation See Channel Type on page 73 See Channel Number Ch SF on page 73 See State on page 74 CONFigure CDPower CTABle MSHift lt MAShift gt This command defines the number of midamble shifts in the channel table This value replaces the value defined by SENSe CDPower MSHift on page 130 Parameters lt numeric value gt 2 4 6 8 10 12 14 16 RST 16 Example CONF CDP CTAB MSH 4 Sets the number of midamble shifts to 4 Manual operation See MA Shifts Cell on page 72 See Midamble Shift on page 74 Sweep Settings SENSE AVERA gena COUN m diia 138 SENSE SWE COUNE oia 138 SENSe AVERage lt n gt COUNt lt AverageCount gt SENSe SWEep COUNt lt SweepCount gt This command defines the number of measurements that the application uses to aver age traces In case of continuous measurement mode the application calculates the moving aver age over the average count In case of single measurement mode the application stops the measurement and cal culates the average after the average count has been reached Example SWE COUN
234. thus the maximum number of symbols per slot Thus the symbol rate depends on the used modulation and the data rate The following tables show the relationships Table 4 5 Number of symbols per slot depending on spreading factor Spreading factor Number of symbols 16 44 8 88 4 176 2 352 1 704 Table 4 6 Number of bits per symbol depending on modulation Channels and Codes Modulation Number of bits per symbol QPSK 2 8PSK 3 16QAM 4 64QAM 6 Table 4 7 Number of bits per slot depending on modulation and spreading factor SF Modulation QPSK 8PSK 16QAM 64QAM Number of bits 16 88 132 176 264 8 176 264 352 528 4 352 528 704 1056 2 704 1056 1408 2112 1 1408 2112 2816 4224 Table 4 8 Channel parameters and their dependencies Spread Sym QPSK 8PSK 16QAM 64QAM ing Fac bols tor Slot Bits per ksps Bits per ksps Bits per ksps Bits per ksps Slot slot slot slot 1 704 1408 281 6 2112 422 4 2816 563 2 4224 844 8 2 352 704 140 8 1056 211 2 1408 281 6 2112 422 4 4 176 352 70 4 528 105 6 704 140 8 1056 211 2 8 88 176 35 2 264 52 8 352 70 4 528 105 6 16 44 88 17 6 132 26 4 176 35 2 264 52 8 Channel notation Channels are generally indicated by their channel number and spreading factor in the form lt Channel gt lt SF gt Selected codes and channels In the resul
235. tidamble Channel Results 1 16 E Fig 3 11 Result Summary display for TD SCDMA BTS measurements Remote command LAY ADD 1 RIGH RSUMmary see LAYout ADD WINDow on page 148 TRACe lt n gt DATA on page 166 CALCulate n MARKer FUNCtion CDPower RESult on page 162 Symbol Constellation The Symbol Constellation evaluation shows all modulated symbols of the selected channel and the selected slot Note The red circle indicates the value 1 4 Symbol Constellation Fig 3 12 Symbol Constellation display for TD SCDMA BTS measurements Remote command LAY ADD 1 RIGH SCONst see LAYout ADD WINDow on page 148 TRACe lt n gt DATA on page 166 User Manual 1176 9029 02 03 23 R amp S FPS K76 K77 Measurements and Result Display Symbol EVM The Symbol EVM evaluation shows the error between the measured signal and the ideal reference signal in percent for the selected channel and the selected slot A trace over all symbols of a slot is drawn The number of symbols depends on the symbol rate or spreading factor of the channel see table 4 8 1 Symbol EVM ei Clrw 5 5 Symb Symb 43 Fig 3 13 Symbol EVM display for TD SCDMA BTS measurements Remote command LAY ADD 1 RIGH SEVM see LAYout ADD WINDow on page 148 TRACe lt n gt DATA on page 166 Symbol Magnitude Error The Symbol Magnitude Error is calculated analogous to symbol EVM The result is one symbol magnitude er
236. tly active sequence of measurements The Sequencer itself is not deactivated so you can start a new sequence immediately using INITiate lt n gt SEQuencer IMMediate on page 159 To deactivate the Sequencer use SYSTem SEQuencer on page 160 Suffix lt n gt irrelevant Starting a Measurement Usage Event INITiate lt n gt SEQuencer IMMediate This command starts a new sequence of measurements by the Sequencer Its effect is similar to the INITiate lt n gt IMMediate command used for a single measurement Before this command can be executed the Sequencer must be activated see SYSTem SEQuencer on page 160 Suffix lt n gt irrelevant Example SYST SEQ ON Activates the Sequencer INIT SEQ MODE SING Sets single sequence mode so each active measurement will be performed once INIT SEQ IMM Starts the sequential measurements Usage Event INITiate lt n gt SEQuencer MODE lt Mode gt This command selects the way the R amp S FPS application performs measurements sequentially Before this command can be executed the Sequencer must be activated see SYSTem SEQuencer on page 160 A detailed programming example is provided in the Operating Modes chapter in the R amp S FPS User Manual Note In order to synchronize to the end of a sequential measurement using OPC OPC or WAI you must use SING1e Sequence mode For details on synchronization see the Remote Basics chapter in the R amp S FPS Use
237. to find the start of the first subframe If a subframe start is found in the signal the code domain power analysis is performed for the selected slot The different evaluations are calculated from the captured UO data set Therefore it is not necessary to start a new measurement in order to change the evaluation The TD SCDMA applications provide the peak code domain error measurement and composite EVM specified by the TD SCDMA standard as well as the code domain power measurement of assigned and unassigned codes The power can be displayed either for all channels in one slot or for one channel in all slots The composite constel lation diagram of the entire signal can also be displayed In addition the symbols demodulated in a slot their power and the determined bits or the symbol EVM can be displayed for an active channel The power of a channel is always measured in relation to its symbol rate within the code domain It can be displayed either as absolute values or relative to the total signal data parts only By default the power relative to the total signal is displayed The composite EVM peak code domain error and composite constellation measure ments are also always referenced to the total signal 3 1 1 Code Domain Analysis Remote command CONF CDP BTS MEAS CDP see CONFigure CDPower MEASurement on page 113 e Code Doman Parameters cian ica 11 e Evaluation Methods for Code Domain Analyse 12 e CDA Measurem
238. to measured levels and time SENS POW ACH AUTO LTIM aa Performing the measurement Stops continuous sweep INIT CONT OFF Sets the number of sweeps to be performed to 10 SWE COUN 10 Start a new measurement with 10 sweeps and wait for the end INIT WAI EE Retrieving results Retrieves the calculated total power value of the signal channel CALC MARK FUNC POW RES CPOW 10 15 2 Programming Examples TD SCDMA BTS Result 1 02 dB Retrieve the trace data of the power measurement TRAC DATA TRACE1 Result 1 482287750E 002 6 440737915E 001 1 482287750E 002 1 482287750E 002 1 482287750E 002 6 440737915E 001 1 482287750E 002 1 482287750E 002 Table 10 6 Trace results for power measurement Frequency Power level 1 482287750E 002 6 440737915E 001 1 482287750E 002 1 482287750E 002 1 482287750E 002 6 440737915E 001 Measurement 2 Determining the Spectrum Emission Mask A Preparing the instrument Reset the instrument RST Activate a TD SCDMA BTS measurement channel named BTSMeasurement INST CRE NEW BTDS BTSMeasurement Set the reference level to 0 dBm DISP TRAC Y SCAL RLEV 0 Set the center frequency to 2 1175 GHz FREQ CENT 2 1175 GHz Select the spectrum emission mask measurement CONF CDP MEAS ESP 42222222 Configuring the measurement Set the slot rang
239. to the require ments of the TD SCDMA standard For details on these measurements see the R amp S FPS User Manual MSRA operating mode Frequency and time domain measurements are not available in MSRA operating mode For details on the MSRA operating mode see the R amp S FPS MSRA User Manual 3 2 1 Measurement Types and Results in the Frequency and Time Domain The TD SCDMA applications provide the following frequency and time domain mea surements Power vs LENS cia 26 EE ee dee Ee 28 Gh Power AGR uma at A 28 el RTE BEE 29 Occupied D ne KL d E 30 COD 31 Power vs Time The Power vs Time measurement checks the signal power in the time domain against a transmission power mask defined by the TD SCDMA specification transmit ON OFF power time mask This measurement is meant to ensure that each burst remains within a tight power range i e rises and falls very quickly For downlink measurements the power in the slots reserved for the uplink transmis sion must quickly fall to the low value and then quickly rise to high again in the slots for downlink transmission Thus the slots of interest in downlink Power vs Time measure ments are slot 1 to the slot indicated by the Switching Point in which the OFF power is checked 1 Power vs Time 0 0024 s Fig 3 16 Power vs Time diagram for TD SCDMA BTS application EH User Manual 1176 9029 02 03 26 R amp S FPS K
240. tton in the Overview Analysis of RF Measurements General result analysis settings concerning the trace markers lines etc for RF mea surements are identical to the analysis functions in the Spectrum application except for some special marker functions which are not available in TD SCDMA applications For details see the Common Analysis and Display Functions chapter in the R amp S FPS User Manual The remote commands required to perform these tasks are described in chapter 10 10 Analysis on page 177 e Evaluation Range cocer eere a da 88 e Code Domain Analysis Settihgs e eroe teer te irte EES EE EEGEN 89 E T 91 E EE 92 7 1 Evaluation Range The evaluation range defines which channel slot or set is evaluated in the result dis play Channel Code Number Slot Number Set To Analyze Channel Code Number 88 edge 89 Set to il c aaisa 89 Channel Code Number Selects a channel for the following evaluations Bitstream Power vs Slot Power vs Symbol Result Summary Symbol Constellation Symbol EVM Code Domain Analysis Settings Enter a code number and spreading factor separated by a decimal point The specified channel is selected and marked in red in the corresponding result dis plays if active If no spreading factor is specified the code on the basis of the spread ing factor 16 is marked For unused channels the c
241. ulated Measurement Results The following commands describe how to retrieve the calculated results from the CDA CALCulate lt n gt MARKer FUNCtion CDPower RESult cccccescccceesccesseeeceseceseeeeseenees 162 CONFigure CDPower BTSEPVTIms LIST RESUulE ict irr enter 164 Retrieving Results CALCulate lt n gt MARKer FUNCtion CDPower RESult lt ResultType gt This command queries the results of the code domain measurement Refer to chap ter 3 1 1 Code Domain Parameters on page 11 for a detailed description of all results The suffix lt n gt is irrelevant Query parameters lt ResultType gt Retrieving Results ACTive Returns the number of active channels ARCD Returns the Average Relative Code Domain Error CDPabsolute Returns the absolute channel power in dBm CDPRelative Returns the relative channel power in dB CHANnel Returns the current channel number CERror Returns the Chip Rate Error in ppm DACTive Indicates whether DwPTS slot is active BTS mode only DPOWer Power in the DwPTS slot BTS mode only DRHO RHO for the DwPTS slot BTS mode only DERM EVM RMS for the DwPTS slot BTS mode only DEPK EVM Peak for the DwPTS slot BTS mode only EVMPeak Returns the maximum Error Vector Magnitude of the selected channel EVMRMS Returns the average Error Vector Magnitude of the selected channel QlMbalance Returns the IQ Imbalance in IQOFfset Returns the IQ
242. unction CDPower Code Domain Power ESPectrum Spectrum Emission Mask OBWidth Occupied Bandwidth POWer Channel Power PVTime Power vs Time RST CDPower Example CONF CDP MEAS POW Selects Signal Channel Power measurement Manual operation See Power vs Time on page 26 See Power on page 28 See Ch Power ACLR on page 28 See Spectrum Emission Mask on page 29 See Occupied Bandwidth on page 30 See CCDF on page 31 See Creating a New Channel Table from the Measured Signal Measure Table on page 72 10 5 Configuring Code Domain Analysis The following commands are required to configure Code Domain Analysis e Configuring the Data Input arid Output cetaceans 115 e Frontend Configuration entente nnn nennen 117 e Configuring Triggered Measurements An 123 Signal erede 128 Ee TIET e E 130 Channel RE Le m 133 TS E e 138 Automatic Le 139 e Evaluation Range cional adan ras 141 e Code Doman Analysis Settings ii tt ret i rae t tad 142 Configuring Code Domain Analysis 10 5 1 Configuring the Data Input and Output A Ll 6 018 OPPPPE PO ee dE tt iyan ade RENG cee EEN 115 e QGontiguring the OUIpuls co doce trt t rade etc nr e 116 10 5 1 1 RF Input ei eeler ve EE 115 liu pu meer 115 INPUERIE pde ENK C E 115 lenger EE 116 INPUESELSOA oia 116 INPut COUPling lt CouplingType gt This command selects the coupling type of the RF input Parameter
243. ure user mode settings that are to be stored on the instrument are stored to vol atile memory which is restricted to 256 MB Thus a Memory full error may occur although the hard disk indicates that storage space is still available To store data permanently select an external storage location such as a USB memory device For details see Protecting Data Using the Secure User Mode in the Data Manage ment section of the R amp S FPS User Manual Parameters lt Trace gt Number of the trace to be stored lt FileName gt String containing the path and name of the target file Example MMEM STOR1 TRAC 3 C NTEST ASC Stores trace 3 from window 1 in the file TEST ASC Usage SCPI confirmed FORMat DEXPort DSEParator lt Separator gt This command selects the decimal separator for data exported in ASCII format Parameters lt Separator gt COMMa Uses a comma as decimal separator e g 4 05 POINt Uses a point as decimal separator e g 4 05 RST RST has no effect on the decimal separator Default is POINt Example FORM DEXP DSEP POIN Sets the decimal point as separator Retrieving Results 10 9 5 Retrieving RF Results The following commands are required to retrieve the results of the TD SCDMA RF measurements See also chapter 10 9 3 Measurement Results for TRACe lt n gt DATA TRACE lt n gt on page 169 CALCULE FA iaa 174 CALCulate n MARKer m FUNCtion POWer ssb RESUIt
244. ured signal and the ideal reference signal onto the spreading factor in the selected slot see Peak Code Domain Error on page 19 The symbol rate from which the spreading factor can be determined is indicated in brackets The channel specific results are displayed in the Result Summary the Channel Table or both Table 3 2 Channel specific code domain power results Parameter Description Channel Type Detected type of channel see table 4 4 Ch SF Channel number including the spreading factor in the form lt Channel gt lt SF gt SymRate ksps Symbol rate at which the data in the channel is transmitted in ksps Symbol EVM RMS and peak EVM values per symbol see Symbol EVM on page 24 Mod Modulation type QPSK 8PSK 16QAM or 64QAM Power dBm Channel power absolute Power dB Channel power relative to total power of the data parts of the signal MA shift Midamble shift For channels this is the shift of the associated midamble if a common or default mid amble assignment is detected see chapter 4 4 Data Fields and Midambles on page 40 AMid1 2 The power offset between the midamble and the sum power of its channels in data part 1 or 2 respectively The TD SCDMA specifications require that the midamble and its channels must have the same power These parameters show if a common or default midamble assign ment is detected see chapter 4 4 Data Fields and Midambles on pag
245. urement to the Current Signal You can adapt the measurement range to the current TD SCDMA signal Start Slot Stop Slot Adapting the Measurement to the Current Signal BTS application only Defines the measurement range for Channel Power measurements as a range of slots in the current TD SCDMA signal e g the downlink slots 4 to 6 for a Switching Point 3 Remote command SENSe POWer ACHannel SLOT STARt on page 145 SENSe POWer ACHannel SLOT STOP on page 146 Auto Level amp Time Adapting the Measurement to the Current Signal Automatically adjusts the reference level and the trigger offset to subframe start to their optimum levels for the current signal This prevents overloading the R amp S FPS When this function is activated current measurements are aborted and resumed after the automatic level detection is finished Remote command SENSe POWer ACHannel AUTO LTIMe on page 145 6 3 2 Signal Channel Power Measurements The Power measurement determines the TD SCDMA signal channel power in a single channel with a bandwidth of 1 2288 MHz In order to determine the signal power the TD SCDMA application performs a Channel Power measurement as in the Spectrum application with the following settings Table 6 2 Predefined settings for TD SCDMA Signal Channel Power measurements Standard TD SCDMA FWD UE TD SCDMA REV Number of adjacent channels 0 Frequency span 3 MHz Measurement ba
246. urementDISP TRAC Y SCAL AUTO ONCE Capture 32 slots in 1 set SENS CDP SET COUN 1 SENS CDP IQL 32 Invert Q branch of signal SENS CDP QINV ON Base station uses scrambling code 16 SENS CDP SCOD 16 Maximum number of users on base station is 8 SENS CDP MSH 8 Synchronize to phase reference of midamble in slot SENS CDP STSL ON Allow for phase rotations between channels SENS CDP STSL ROT ON Power threshold for active channel is 10 dB compared to total signal SENS CDP ICTR 10 Automatic channel search for modulation up to 8PSK SENS CDP MMAX PSK8 CONF CDP CTAB OFF l5 3 3 32 Defining the evaluation range and result displays Analyze slot 3 in set 0 SENS CDP SET 0 SENS CDP SLOT 3 Set code 3 for SF 16 as current code SENS CDP CODE 3 Define relative power values SENS CDP PDIS REL f 2 Performing the measurement Stops continuous sweep INIT CONT OFF Sets the number of sweeps to be performed to 10 SWE COUN 10 Start a new measurement with 10 sweeps and wait for the end INIT WAI peseseaER Retrieving results Retrieve the relative code domain power CALC MARK FUNC CDP BTS RES CDPR Programming Examples TD SCDMA BTS Result 0 dB Retrieve the trace data of the code domain power measurement TRAC DATA TRACE1 Result 8 000000000 0 000000000 4 319848537 3 011176586 0 000000000 2 000000000 1 000000000 4 318360806 3 0
247. uring the measurement time CFACtor Determined crest factor ratio of peak power to average power in dB ALL Results of all three measurements mentioned before separated by commas lt mean power gt lt peak power gt lt crest factor gt 10 10 10 10 1 Analysis Example CALC STAT RES2 ALL Reads out the three measurement results of trace 2 Example of answer string 5 56 19 25 13 69 i e mean power 5 56 dBm peak power 19 25 dBm crest factor 13 69 dB Usage Query only Manual operation See CCDF on page 31 Analysis The following commands define general result analysis settings concerning the traces and markers 6 MATES odio 177 o O eee ee 178 Traces The trace settings determine how the measured data is analyzed and displayed on the screen In TD SCDMA applications only one trace per window can be configured for Code Domain Analysis REGER Tee EN e le RTE 177 DISPlayE WINDow n 7 TRAGest STATe 2 reor das 177 DISPlay WINDow lt n gt TRACe lt t gt MODE Mode This command selects the trace mode In case of max hold min hold or average trace mode you can set the number of single measurements with SENSe SWEep COUNt Note that synchronization to the end of the measurement is possible only in single sweep mode Example INIT CONT OFF Switching to single sweep mode SWE COUN 16 Sets the number of measurements to 16 DISP TRAC3 MODE WRIT Selects clear write mode for trace 3
248. used as a time reference for synchronization DwPTS Uses the Downlink Pilot Time Slot DwPTS as a time reference see also chapter 4 2 Frames Subframes and Slots on page 35 Slot 0 Uses slot 0 as a time reference Remote command SENSe CDPower TREF on page 132 Time Reference UE mode Defines which slot is used as a time reference for synchronization UpPTS Uses the Uplink Pilot Time Slot UpPTS as a time reference see also chapter 4 2 Frames Subframes and Slots on page 35 Slot 1 Uses slot 1 as a time reference Remote command SENSe CDPower TREF on page 132 Sync To Defines the phase reference For a successful synchronization the selected slot must contain at least one data channel with sufficient power Not available for Power vs Time measurements P CCPCH BTS application only By default the R amp S FPS TD SCDMA BTS application determines the phase reference for all downlink data slots from the downlink pilot channel P CCPCH in slot 0 For some measurements like beam forming or repeater measurements it might be necessary to apply dif ferent phase offsets to each time slot In these timeslots using the P CCPCH as phase reference leads to rotated constellation diagrams and poor EVM results Code Chan UE application only nel The R amp S FPS TD SCDMA UE determines the phase reference from the channel of the selected slot This is useful when synchronization fails in poor
249. wer BTS PV Time LIST RESUlt rit iii tc rre ttr Cen 164 GONFigure CDPower BTS PV Time LISTESTATe irt t tr te eh nh neri 191 CONFigure CDPow r BTS V ME 145 CONFigure CDPower BTS PV Time SPOltit rrr tnter rp c 145 DIAGnostic SERVIGe Ee 117 DISPlay deliup E Ms 146 DISPlay MTABle DISPlay WIND Wwsn gt SIZE ia cia 147 DISPlayEWINDow lt n gt TRACe St MODE c coh conc rtorras 177 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe AUTO ONCE conan nc nnnaninccnnns 119 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe MAXimum DISPlay WINDow n TRACe t Y SCALe MlINimum esee DISPlay WINDow n TRACe t Y SCALe PDlVision essent DISPlay WINDow n TRACe t Y SCALe RLEVVel sess neret nnne DISPlay WINDow n TRACe st Y SCALe RLEVel OFFSet sese 120 DISPlay WINDow n TRACe t Y SCALe RPOSition esee 121 DlGblavt WiNDow nzUTRACectvlSCALelbRVAl ue 121 DISPlay WINDow lt n gt TRACe lt t gt STATe BISPlayEWINDOW lt n gt ZOOM AREA E DISPlay WINDow lt n gt ZOOM MULTiple lt zoom gt AREA conc conca nonccnnn cnn nono neret 155 DISPlay WINDow n ZOOM MULTiple zoom STATe sese nennen rennes 156 DISPlay WINDOW Eeer RRE 155 eeh 173 FORMat DATA BE INITiate lt n gt CONM
250. wer evaluation Parameters Mode ABS REL ABSolute Absolute power levels RELative Power levels relative to total power of the data parts of the signal RST ABS Example SENS CDP PDIS ABS Manual operation See Code Power Display on page 90 SENSe CDPower PTS State If activated additional information on the DwPTS BTS mode or UpPTS UE mode is displayed in the Result Summary See also chapter 4 2 Frames Subframes and Slots on page 35 This parameter only affects the Code Domain Power evaluation Configuring Frequency and Time Domain Measurements Parameters lt State gt ON OFF ON PTS evaluation is activated OFF PTS evaluation is disabled RST OFF Example SENS CDP PTS ON Manual operation See Show DwPTS Results BTS mode on page 91 See Show UpPTS Results UE mode on page 91 10 6 Configuring Frequency and Time Domain Measure ments Frequency and time domain measurements are performed in the Spectrum application with some predefined settings as described in chapter 6 3 Frequency and Time Domain Measurements on page 78 For details on configuring these RF measurements in a remote environment see the Remote Commands chapter of the R amp S FPS User Manual The TD SCDMA RF measurements must be activated for a TD SCDMA application see chapter 10 3 Activating the TD SCDMA Applications on page 109 The individual measurements are activated using the CONFigure CDPower MEASur
251. xisting window use the TAYout REPLace WINDow command Parameters lt WindowName gt String containing the name of the existing window the new win dow is inserted next to By default the name of a window is the same as its index To determine the name and index of all active windows use the LAYout CATalog WINDow query lt Direction gt LEFT RIGHt ABOVe BELow Direction the new window is added relative to the existing win dow lt WindowType gt text value Type of result display evaluation method you want to add See the table below for available parameter values Return values lt NewWindowName gt When adding a new window the command returns its name by default the same as its number as a result Example LAY ADD 1 LEFT MTAB Result y 2 Adds a new window named 2 with a marker table to the left of window 1 Usage Query only Configuring the Result Display Manual operation See Bitstream on page 13 See Channel Table on page 13 See Code Domain Power on page 15 See Code Domain Error Power on page 15 See Composite Constellation on page 16 See Composite EVM on page 17 See Mag Error vs Chip on page 18 See Marker Table on page 19 See Peak Code Domain Error on page 19 See Phase Error vs Chip on page 20 See Power vs Slot on page 21 See Power vs Symbol on page 22 See Result Summary on page 23 See Symbol Constellation on page 23 See Symbol EVM on page 24 See
252. xt lower maximum of the assigned trace If no marker is active marker 1 is activated Remote command CALCulate n MARKer m MAXimum NEXT on page 182 CALCulate n DELTamarker m MAXimum NEXT on page 183 Search Next Minimum Sets the selected marker delta marker to the next higher minimum of the selected trace If no marker is active marker 1 is activated Remote command CALCulate n MARKer m MINimum NEXT on page 182 CALCulate n DELTamarker m MINimum NEXT on page 184 Peak Search Sets the selected marker delta marker to the maximum of the trace If no marker is active marker 1 is activated Remote command CALCulate n MARKer m MAXimum PEAK on page 182 CALCulate n DELTamarker m MAXimum PEAK on page 183 Search Minimum Sets the selected marker delta marker to the minimum of the trace If no marker is active marker 1 is activated Remote command CALCulate n MARKer m MINimum PEAK on page 182 CALCulate lt n gt DELTamarker lt m gt MINimum PEAK on page 184 Error Messages 8 Optimizing and Troubleshooting the Mea 8 1 surement If the results do not meet your expectations try the following methods to optimize the measurement Synchronization fails e Check the frequency e Check the reference level e When using an external trigger check whether an external trigger is being sent to the R amp S FPS e Check the carrier frequency error see chapter 3 1 1

R&S FPS-K76/-K77 TD-SCDMA User Manual

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R&amp;S FPS-K76/-K77 TD-SCDMA User Manual

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R&S FPS-K76/-K77 TD-SCDMA User Manual