Home

R&S FSW-K17 MC Group Delay User Manual

1. seessess 21 Average moOd E iiec ires a e SOR oe ERN RR 55 Averaging remote control eee Configuration Softkey sse 53 Configuring remote control sssssss 129 Export format 48 57 69 70 Exporting sians etta rend 56 57 58 69 Exporting results remote sssssssss 126 Hold Mode Mod remote dropte ansans Retrieving results remote Selecting ies Settings remote control Settings predefined Trigger Conditions remote ici rientra 97 Configuration softkey sese 38 Drop out mE e div n 42 External remote 100 ule M 42 dy SteresiS ooo uer pad te ditis abbia caves ede IR add 42 our 42 Output assins 42 50 REmMOte COMMON i a decer eren d ete en dues 97 Slope 15 eatis i O S Duane ce im cao 42 100 Triggerdewvel zeit era etti eet Htc reete 41 External trigger remote 34 99 I Q Power remote 99 IF Power remote eerte 99 RF Power remote 100 Trigger SOURCE ciet one nine D Re eae rir ok tor eid External eot a ius Free Run 1 Q Power IF Power RF Power Troubleshooting y INPUT OVEN OAs snn isoin miana aaa 86 U UNITS sisirin aenn a A det 36 Isefererice leVel srenti or e exo aa 31 Settings remote Upper Level Hysteresis User manuals rrt erroe tenen 6 W Window title bar inform
2. sss 109 Performing Stoning date cn tad trasera Er crece er p ida 47 68 Storing data remote eem 109 Troubleshooting CatmieroffSel 2a ote etre aves ie ce rre led Camer SPACING sees ceni nter rre rore tp rra tir ien Carriers Center freqUengy oer ern 37 45 Displayed seirinin in 11 To E E E E ET 37 45 Step SIZE coim rene nr iaa ia iaaiiai 37 Closing Channels remote 2 ertet nte teee 83 Windows remote e eiie cens 113 116 Continue single sweep SOftk6y eret mensi er E n 49 Continuous sweep SOftK6y ceret mensi ter ER an 48 Conventions SGPl comrmiands eret 7T Copying Measurement channel remote sss 82 Coupling Inp t Femote cce rexit ir og esses 86 Crest factor Input signal virsiaia sgean 23 CSV File format oen eterne 153 D Data format Pee c 151 sre eat 151 ReMOTE score ient cepe cereos erac Uec deer ue ra dea 125 128 Decimal separator Trac EXPOR creen tinere there 48 57 69 70 Delta markerSs ose eei oreet rore pc eio EEEE 61 Defining Positioning remote eee 140 Diagram tooter Information suus o ern reet prenne tans 12 Direct path IMPUE COMMQUEEEOM c 29 REMOTE iraa EEN cree savannas nconeed 86 Discrete frequency transformation DFT 15 Display COMMOTION issan eR EEES 66 Information m Doppler
3. icto gs 22 Reference position blog s 35 Reference value blog chases caiyeevt Mit we e acter is edt ate ie Remote commands is Basic TaSkS 6 0 IP Basics Of Syntax terrre rre Boolean values Capitalization Character data Data blocks Numeric values Optional keywords tenet etn 78 Parameters 2 2 ned prae tee REP e rece Ideen 79 Strings Suffixes Resetting RF input protection ett nens 86 Restoring Channel Settings rrr 27 Result displays GAIN M ence teh erro ee ad 18 Group Delay vs Frequency ccceceeeeeteeeeeeeeeeeeees 17 Magnitude vs Frequency 15 16 Market table 2 2 e c ets 18 Phase vs Frequehocy erret 16 17 Results ASOII export format sissi 2 neret 151 CSV export formal etre rte 153 Data format remote 125 128 Display 15 EXDOMIAG M 57 Markers remote as 129 Retrieving remote esee 123 iren Traces remote Traces exporting remote ssssss 126 RF attenuation PAULO i ctii fete b e reads Hes ee pad 31 ETAIU TE T E ecce re eee Here t aede 31 RFMD mL M 28 Overload protection remote ssssusss 86 REMOTE Me PUN 86 88 RF Power BI 41 Trigger level remote sese 100 RUN CONT
4. eeeeseeeeenenenene nne 130 DISPlay WINDow lt n gt TRACe lt t gt SMOothing APERture cccceeeeeceeeeeeeeeeeaeeaeeeaeeeeeneteees 130 DISPlay WINDow n TRACe t SMOothing STATe eee eene 131 DISPlay WINDow n TRACe t STATe essere rere enne 131 SENSE JAVERagS Sn COME ipae tuere etu n Ert rr Retac a ER ERR X EXER RE REE 131 SENSe AVERage n STATe t esssssssssssssssssesesene nennen enne nennen entre nnne rer hr nn nis 132 ISENSeJTAVERagest s T YE o idee a abs nodu Loop cepta deer ee aia xe RE RRO 132 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 Sweep Count Note that synchronization to the end of the mea surement is possible only in single sweep mode Parameters Mode WRITe Overwrite mode the trace is overwritten by each sweep This is the default setting AVERage The average is formed over several sweeps The Sweep Aver age Count determines the number of averaging procedures MAXHold The maximum value is determined over several sweeps and dis played The R amp S FSW saves the sweep result in the trace mem ory only if the new value is greater than the previous one MINHold The minimum value is determined from several measurements and displayed The R amp S FSW saves the sweep result in the tr
5. 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 11 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 11 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 numeric suffix in the
6. Trigger 2 3 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 103 6 9 Automatic Settings Some settings can be adjusted by the R amp S FSW automatically according to the current measurement settings and signal characteristics MSRA operating mode In MSRA operating mode the following automatic settings are not available as they require a new data acquisition However the GSM application cannot perform data acquisition in MSRA operating mode To activate the automatic adjustment of a setting select the corresponding function in the AUTO SET menu Automatic Settings Setting the Reference Level Automatically Auto Level seeecessss 52 Resetting the Automatic Measurement Time Meastime Auto 52 Changing the Automatic Measurement Time Meastime Manual 52 Upper Level FlySIGEGSIS ree nate eoe n i as Rea eite erac dtr 52 Lower Level FySIeresis eee tete iere treu o Fe eO ERR LEE HORE AREE eR ERE E cs 52 Setti
7. eene 128 Commands for Compatibility eese nnne 143 Programming Example Measuring Multi Carrier Group Delay 148 PWN ccd tei 151 Formats for Returned Values ASCII Format and Binary Format 151 Reference ASCII File Export Format eese eene 151 Reference CSV File Export Fortmat cceccescesseeeeeee cece eee eeeeeeeeeaseeneeeseeeeeeeneeeeeees 153 List of Remote Commands MC Group Delay 156 j dur 160 EE User Manual 1173 9405 02 14 4 About this Manual 1 Preface 1 1 About this Manual This Multi Carrier Group Delay User Manual provides all the information specific to the application All general instrument functions and settings common to all applica tions and operating modes are described in the main R amp S FSW User Manual The main focus in this manual is on the measurement results and the tasks required to obtain them The following topics are included Welcome to the Multi Carrier Group Delay Application Introduction to and getting familiar with the application e About the measurement General concept of the MCGD measurement and typical applications e Measurements and Result Displays Details on supported measurements and their result types Measurement Basics Background information on basic t
8. Check level settings on both the signal generator in use and the R amp S FSW MCGD application Increase the generator s output level and adjust the reference level of the MCGD application accordingly e Check the measurement time Longer measurement times result in better signal to noise ratios in the group delay calculation The Meas Time Auto mode should provide a suitable value in most cases see Measurement Time on page 45 e For absolute group delay calculation an external trigger has to be used Check whether an external trigger is connected and is being sent to the R amp S FSW The trigger periodicity has to be an integer multiple of the signal s periodicity which is 1 carrier spacing e Increase the sweep count for absolute group delay calculation for example 100 sweeps to improve the measurement result Use the sweep count for calibration as well as for group delay measurement trace averaging to compensate for trig ger inaccuracies Increase the carrier spacing on the used multi carrier signal to reduce noise in the group delay calculation Reducing the carrier spacing for multi carrier signals leads Error and Status Messages to a better frequency resolution but also causes more noise in the calculated group delay For very low signal levels and short measurement times the frequency estimation used by the MCGD application to determine the exact position of the carriers can degrade the measurement result due to unc
9. Range 1 to 50 RST 2 Default unit PCT Example DISP3 TRAC2 SMO APER 5 Defines an aperture of 5 for trace 2 in window 3 assuming this is a Group Delay Magnitude or Gain result dis play Manual operation See Smoothing on page 54 Analyzing Multi Carrier Group Delay Measurements DISPlay WINDow lt n gt TRACe lt t gt SMOothing STATe State This command turns trace smoothing for a particular trace on and off If enabled the trace is smoothed by the value specified using DISPlay WINDow lt n gt TRACe lt t gt SMOothing APERture on page 130 This setting is only available for Group Delay Magnitude and Gain results Parameters State ON OFF RST OFF Example DISP3 TRAC2 SMO ON Turns on trace smoothing for trace 2 in window 3 assuming this is a Group Delay result display Usage SCPI confirmed Manual operation See Smoothing on page 54 DISPlay WINDow lt n gt TRACe lt t gt STATe lt State gt This command turns a trace on and off The measurement continues in the background Parameters lt State gt ON OFF 0 1 RST Trace 1 1 Trace 2 4 0 Example DISP TRAC3 ON Usage SCPI confirmed Manual operation See Trace 1 Trace 2 Trace 3 Trace 4 on page 54 See Trace 1 Trace 2 Trace 3 Trace 4 Softkeys on page 56 SENSe JAVERage lt n gt COUNt lt AverageCount gt This command defines the number of sweep s that the application uses to average traces for all windows lt n g
10. Unit of x values y Unit V Unit of y values Data section Values 51 Number of measurement points 95000000 20 5 96000000 20 3 97000000 24 2 Measured values lt x value gt lt y value gt Table 12 3 CSV file format for measurement data export File contents Description Header data Type R amp S FSW Instrument model Version 1 30 Firmware version Date 20 Jan 2012 Date of data set storage Mode MCGD DB1 00 Channel type database version Ref Level 0 Reference level Level offset 0 Reference level offset Rf Att 10 EI Att 0 Input attenuation Electronic attentuation Center Freq 10000000 Hz Center frequency Freq Offset 0 Hz Frequency offset Span 10000000 Hz Frequency range Number of Carriers 51 Number of carriers Carrier Spacing 10000000 Hz Distance between two carriers Meas Time 0 00003128125 s Measurement time Group Delay Absolute Value type for group delay Carrier Offset AUTO Auto mode for carrier offset Carrier Offset 0 Hz Carrier offset value Sweep Count 0 Number of sweeps set Reference CSV File Export Format File contents Preamplifier OFF Description Preamplifier status Number of windows Number of windows included in export Data section for individual window Window 1 Magnitude Name of first
11. 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 t is irrelevant Parameters Value numeric value RST depends on the result display The unit and range depend on the result display Configuring Multi Carrier Group Delay Measurements 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 Defining Min and Max Values on page 36 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe MODE Mode This command selects the type of scaling of the y axis for all traces t is irrelevant When the display update during remote control is off this command has no immediate effect Parameters Mode ABSolute absolute scaling of the y axis RELative relative scaling of the y axis RST ABSolute Example DISP TRAC Y MODE REL Manual operation See Scaling on page 35 See Scale Mode on page 36 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 t is irrelevant Parameters Value 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
12. Y SCALe MAXimum DISPlay WINDow n TRACe st Y SCALe MINimum eeeeeeeeeeneneeene nennen nennen 92 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe MODE DISPlay WINDow lt n gt TRACe lt t gt Y SCALe PDIVision DISPlay WINDow n TRACe st Y SCALe RLEVVel eseesseeeeseeeseeeeeeeneenneen rennen eene 88 DISPlay WINDow n TRACe t Y SCALe RLEVel OFFSet sess 89 DISPlay WINDow n TRACe t Y SCALe RPOSition eessesssesseeeeeeeenennnee nennen 93 DISPlay WINDow n TRACe t Y SCALe RVALue essent ennemis 94 DISPlayEWINDBowsri7 TRAGest S l AT6 iiei nerunt trt rr nett tee 131 DISPlay WINDow lt n gt TYPE BISPlayEWINDows lt n gt ZOONGAREA wis cipere riter conciesantiensqeviegtcascestabtnds TEENE EAE TEE ETES 141 DISPlay WINDow n ZOOM MULTiple zoom AREA esseeseeeeeeeeeeeneenneneee nennen nnn trennnnin 142 DISPlay WINDow n ZOOM MULTiple zoom STATe seen nennen nennt nnne 143 BISPlay WINDowsn ZOOM S VAM C vcssices coe cues sott rapere npe etu n qe eeepc eo p tna SEP be EY ERI reo e rco 142 FORMatDEXPort DSEPatfalor rrr rre tr rre eo ere err PR geni n e ER d Ed ve en n RR RE Een 127 FORMat DEXPort HEADer FORMat DEXPort TRACes ies UE BB qr M aee INITiatesnz CONMGS uictor e erret Eee teca peor heres er I Rae r
13. mag nitude Gain f D 2 cal The gain describes the transmission behavior of the DUT 5 2 The Multi Carrier Measurement The R amp S FSW Multi Carrier Group Delay application evaluates an input signal provi ded by a signal generator A signal consisting of several unmodulated carriers with a fixed step size is used as an input signal Dependancy of the span on the number of carriers The frequency span to be swept during the measurement is determined by the number of carriers in the input signal and the spacing between them It is recommended that you set the span according to the following equation Span Number of carriers 1 carrier spacing Af The Multi Carrier Measurement Example A span 2 3 carrier spacing Af is required to measure a signal with four carriers Span 9 e Center Frequency As a rule the span can only be defined as a multiple of the carrier spacing Center frequency and carrier offset If the carriers are not aligned with the defined center frequency the offset can be esti mated automatically the carrier frequencies with the fixed offset are then used to improve the calculation Carrier estimation If the carrier frequencies are distorted due to the Doppler effect the frequencies for each carrier can be estimated thus improving the results of the group delay Demodulation bandwidth The bandwidth to be demodulated during the measurement is determined automati cally by the appli
14. softkey Amplitude Scaling Unit Phase unit Phase Unit Rad Deg ettet etin retenu n rab dace eese Pad anite Bea Rex re Ra and 36 Phase Unit Rad Deg Sets the phase unit to rad or deg for displaying phase signals Remote command UNIT ANGLe on page 95 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 Frequency Settings e Select the FREQ key and then the Frequency Config softkey e Select Frequency in the configuration Overview Frequency Center Span Center Frequency Stepsize Stepsize Frequency Offset Value Center frequency Defines the normal center frequency of the signal fmax and span i depend on the instrument and are specified in the data sheet Remote command SENSe FREQuency CENTer on page 95 Span Defines the frequency span to be measured Only a multiple of the carrier spacing can be defined The Number of Carriers is adapted accordingly see Dependancy of the span on the number of carriers on page 20 Remote command SENSe FREQuency SPAN on page 105 Center Frequency Stepsize Defines the step size by which the center frequency is increased or decreased using the arrow keys 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 i
15. 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 Amplitude Reference Level Input Settings Value S Preamplifier Offset Input Coupling Unit Impedance Electronic Attenuation State Mode Value Reference Level oinera aa E T E EEE 31 L Shifting the Display Offset ccccccsssscssssessseseseseseecseecsessetseseeseeneneseaes 31 Amplitude and Y Axis Scaling PARE ATE OTI cis ceret des erdt rette er tese dte d AAE aaa 31 L Attenuation Mode Vilis nescio dte cnr n d raa eda 31 Using Electronic Attenuatioh uecleeececieeeeneee screen rapta pan tede oan tna a au E Enna 32 pertes S E M 32 L Preamplifier c c ccccesescscscscssscsssessescscecscscscscsesesscesscsvscsesssusesesevevecssssseseesesevees 32 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 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 FSW is adapted according to this value it is recom mended that you set the reference level close above the expected maximum signal level to ensure an optimum measurement no c
16. DEModU latiQfi cicnoa cea erret ten oet ep teres ore e Rhen Ye spese nieve rt operta 145 SENSe ADEMod MCPHase MET FOod reno et anneanne SENSe ADEMod MCPHase SPACing n SENSe ADEMod MCPhlasel S TA Me vciccsververcesncansececntussnssceteos teo etae nET REEE TEATES SENSe ADEMOGd MTIMe AU TQ ceti eerte nr nean e ner rtp heh Gr dee ET EE ee er Eo SENSe ADEMOGQ MTIMG irat eret tt tren re a cei ico aer EAR ER EE ERE RARE EE EE IE Ped 147 ISENSE JADEMOJ Boda oir rc 148 SENSe ADEMod SPECtrum PHASe RESUIE uiiei rentre tnter re rn ror hn e exea 146 SENSe JADEMod SPECtrum PHASe TYPE SENSe ADEMod SPECtrum SPAN Po SENSe ADEMod SPECtrum SPAN ZOOM t erra tarnen e npn tare Fre XR iaa SENSe JADEMod SPECtrum SPAN MAXimum eee nnre nnne 147 SENSe JADEMod SPECtrum MAGNitude RESUIE eese ener 147 SENSe ADEMod SPECtrum MAGNitude T YPE not tr tnnt nere nne 147 SENSe ADEMOG SRXAT 6 oreet ne rete rnc riri o Fe EE a ER PY RR d FPE E EXE EE Regn Rs 148 SENSEJADEMOG STATE 148 SENSe JADJust CONFigure D Rationi urnana trt trt ren eee nitro tte n rn eee 107 SENSe ADJust CONFigure DURation MODBE 1 nen enint riri th tenian dn 107 SENSe ADJust CONFigure HYS Teresis EOWer eere rnt retten nhan bn tbe TANE NESET 108 SENSe ADJu
17. INST LIST Result for 3 measurement channels ADEM Analog Demod IQ IQ Analyzer IQ IQ Analyzer2 Usage Query only R amp S9FSW K17 Remote Commands to Perform Multi Carrier Group Delay Measurements Table 11 1 Available measurement channel types and default channel names in Signal and Spectrum Analyzer mode Application lt ChannelType gt Default Channel Name Parameter Spectrum SANALYZER Spectrum I Q Analyzer IQ IQ Analyzer Pulse R amp S FSW K6 PULSE Pulse Analog Demodulation R amp S FSW K7 ADEM Analog Demod GSM R amp S FSW K10 GSM GSM Multi Carrier Group Delay R amp S FSW K17 MCGD MC Group Delay Amplifier Measurements R amp S FSW K18 AMPLifier Amplifier Noise R amp S FSW K30 NOISE Noise Phase Noise R amp S FSW K40 PNOISE Phase Noise Transient Analysis R amp S FSW K60 TA Transient Analysis VSA R amp S FSW K70 DDEM VSA 3GPP FDD BTS R amp S FSW K72 BWCD 3G FDD BTS 3GPP FDD UE R amp S FSW K73 MWCD 3G FDD UE TD SCDMA BTS R amp S FSW K76 BTDS TD SCDMA BTS TD SCDMA UE R amp S FSW K77 MTDS TD SCDMA UE cdma2000 BTS R amp S FSW K82 BC2K CDMA2000 BTS cdma2000 MS R amp S FSW K83 MC2K CDMA2000 MS 1xEV DO BTS R amp S FSW K84 BDO 1xEV DO BTS 1xEV DO MS R amp S FSW K85 MDO 1xEV DO MS WLAN R amp S FSW K91 WLAN WLAN LTE R amp S FSW K10x LTE LTE Real Time Spectrum R amp S FSW B160R RTIM Real Time Spectrum K160RE DOCSIS 3 1
18. 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 CALCulate lt n gt MARKer lt m gt MAXimum NEXT This command moves a marker to the next lower peak Usage Event Analyzing Multi Carrier Group Delay Measurements Manual operation See Search Next Peak on page 65 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 65 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 command moves a marker to the next minimum value Usage Event Manual operation See Search Next Minimum on page 65 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 Mi
19. Manual operation See Search Minimum on page 65 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 the current marker posi tion Usage Event Zooming into the Display Using the Single Zoom DISPlay WINDowsns ZOOM AREA ctt tp tt roe EAE EAEE 141 DISPlayEWINDowsnsEZOOM S TTG citada tad e no patet oo eti a t eat ra bg tete 142 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 R amp S FSW K17 Remote Commands to Perform Multi Carrier Group Delay Measurements 1 Frequency Sweep 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 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 66 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 Singl
20. Parameters Size 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 11 6 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 Note that the suffix n always refers to the window in the currently selected measure ment channel see INSTrument SELect on page 85 LAYO ADDF WINDOW choco cco vec ns een rere h eae edema dau ret 22 pee aae ous RET ERR UE ct SER HE DEREN 112 LAYoOurCATAlog WIN DOW ccn eode cete arr tete dre tc e re treo 113 LAYoutTIDENty WINBOW 1i ioi o eaae ta esce to abeo eet dide pa EA oce v mi opc ID PE E 113 LAYouEREMoveDWINDiOGW eire Rte etae ho at eec etie heces trek a a E 113 LAYout REPLace WINDOW aee Fnac tpi cnr etr poke ca e iaaa a adadda 114 LAVOR SP NEI m E 114 LAY ou EE WINDOW PP ADD ics tete nette aE Rea E DU REVO xad hee duh 116 LAYoutWINDow sn IDEMtify u2ecuc cette te ruat e
21. String containing the path and name of the target file Example MMEM STOR1 TRAC 3 C TEST ASC Stores trace 3 from window 1 in the file TEST ASC Usage SCPI confirmed Manual operation See Export Trace to ASCII File on page 58 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 Manual operation See Decimal Separator on page 48 Analyzing Multi Carrier Group Delay Measurements FORMat DEXPort HEADer State If enabled additional instrument and measurement settings are included in the header of the export file for result data If disabled only the pure result data from the selected traces and tables is exported See chapter 12 2 Reference ASCII File Export Format on page 151 for details Parameters State ON OFF 0 1 RST 1 Usage SCPI confirmed Manual operation See Include Instrument Measurement Settings on page 57 FORMat DEXPort TRACes Selection This command selects the data to be included in a data export file see MMEMory STORe lt n gt TRACe on page 127 Parameters Selection SINGIe Only a single trace is selecte
22. Trace settings can be configured via the TRACE key in the Traces dialog box or in the vertical Traces tab of the Analysis dialog box Trace data can also be exported to an ASCII file for further analysis For details see chapter 7 2 Trace Data Export Configuration on page 56 WOR ss Cnastsism 2 Teanciant VC Traces Trace Data Export Traces Smoothing Average Mode Hold State Value nar Marker Trace 1 Loganthmic oD one etme SS foon ALLE Trace Settings Average NOUO uites ducat c adducto az ut d 55 fovea lo E EEO 55 Predefined Trace Settings Quick Config ssssssssssssseeeeeenees 55 Trace 1 Trace 2 Trace 3 Trace 4 Softkeys ssssssssssssseeeeeenne 56 Trace 1 Trace 2 Trace 3 Trace 4 Selects the corresponding trace for configuration The currently selected trace is high lighted orange Remote command DISPlay WINDow lt n gt TRACe lt t gt STATe on page 131 Selected via numeric suffix of TRACe t commands Mode Defines the update mode for subsequent traces Clear Write Overwrite mode the trace is overwritten by each sweep This is the default setting Max Hold The maximum value is determined over several sweeps and dis played The R amp S FSW saves the sweep result 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 The R amp S FSW sa
23. Y PDIV 10 Sets the grid spacing to 10 units e g dB per division Manual operation See Range per Division on page 35 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe RPOSition Position This command defines the vertical position of the reference level on the display grid for all traces t is irrelevant The R amp S FSW adjusts the scaling of the y axis accordingly Configuring Multi Carrier Group Delay Measurements Parameters Position 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 Manual operation See Ref Level Position on page 34 See Y Axis Reference Position on page 35 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 t 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 Value 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 Manual operation See Y Axis Reference Value on page 35 DISPlay WINDow lt n gt TRACe lt t gt Y SPACing lt ScalingType gt This comm
24. can set the RF attenuation in 1 dB steps down to 0 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 Amplitude and Y Axis Scaling 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 89 INPut ATTenuation AUTO on page 90 Using Electronic Attenuation If the optional Electronic Attenuation hardware is installed on the R amp S FSW you can also activate an electronic 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 213 6 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 Thu
25. channel For a list of available channel types see INSTrument LIST on page 83 Activating Multi Carrier Group Delay Measurements 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 for the new channel see INSTrument LIST on page 83 Example INST CRE REPL IQAnalyzer2 IQ IQAnalyzer Replaces the channel named IQAnalyzer2 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 IQAnalyzer4 Deletes the channel with the name IQAnalyzer4 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
26. compen sated for Remote command CALCulate GRPDelay MODE on page 104 Carrier Estimation Defines whether the carrier frequencies are estimated and then compensated for On The carrier frequencies are estimated and then compensated for dur ing calculation Which method is used to estimate the frequencies is defined by the Estimation Type Off The carrier frequencies as defined in the configuration are used pos sible offsets are not compensated Remote command SENSe CARRier OFFSet on page 105 SENSe CARRier OFFSet MODE on page 105 Estimation Type Defines the method used to estimate the carrier frequency if Carrier Estimation is enabled All Carriers Estimates the frequency for each carrier and uses the determined fre quencies when calculating the group delay This estimation is useful for in orbit measurements of satellites for which the group delay may be distorted due to the Doppler effect Offset The offset is assumed to be identical for all carriers It is estimated and the determined frequencies are then used for calculation Remote command SENSe CARRier OFFSet MODE on page 105 Calibration Calibration is performed in the Calibration tab of the Multi Carrier Config dialog box Multi Carrier Configuration EL I E Meas Config Calibration Last Reference Calibration Center Frequency Frequency Offset Span Number of Carriers Carrier Spacing Meas Time Execute Reference Cali
27. data storage functions for measurement settings and results graphical display of group delay magnitude and phase at carrier frequency points in measurement or reference signal e interactive or remote measurement control This user manual contains a description of the functionality that the application pro vides including remote control operation Functions that are not discussed in this manual are the same as in the Spectrum appli cation and are described in the R amp S FSW User Manual The latest version is available for download at the product homepage Installation You can find detailed installation instructions in the R amp S FSW Getting Started manual or in the Release Notes Starting the Multi Carrier Group Delay Application The Multi Carrier Group Delay application adds a new measurement to the R amp S FSW To activate the Multi Carrier Group Delay application 1 Press the MODE key on the front panel of the R amp S FSW A dialog box opens that contains all operating modes and applications currently available on your R amp S FSW 2 Select the MC Group Delay item MC Group Delay Understanding the Display Information The R amp S FSW opens a new measurement channel for the Multi Carrier Group Delay application The measurement is started immediately with the default settings It can be configured in the Multi Carrier Group Delay Overview dialog box which is displayed when you select the Overv
28. maintained for compatibility reasons only Use SENSe CARRier SPACing on page 104 for new remote control programs Parameters lt CarrierSpacing gt Default unit HZ SENSe ADEMod MCPHase STATe State This command switches to the Multi Carrier Group Delay application of the instrument or disables it Commands for Compatibility Note that this command is maintained for compatibility reasons only Use the INST SEL MCGD command for new remote control programs see INSTrument SELect on page 85 Parameters State SENSe JADEMod SPECtrum PHASe RESult lt WindowType gt This command returns the trace data of the first trace of the given type within the phase window Note that this command is maintained for compatibility reasons only Use TRACe lt n gt DATA on page 126 for new remote control programs Query parameters lt WindowType gt WRITe AVERage MINHold MAXHold Usage Query only SENSe JADEMod SPECtrum PHASe TYPE lt Trace1 gt lt Trace2 gt lt Trace3 gt This command sets the modes of the first three traces of phase windows Note that this command is maintained for compatibility reasons only Use DISPlay WINDow lt n gt TRACe lt t gt MODE on page 129 for new remote control programs Parameters lt Trace1 gt WRITe AVERage MINHold MAXHold VIEW OFF lt Trace2 gt WRITe AVERage MINHold MAXHold VIEW OFF lt Trace3 gt WRITe AVERage MINHold MAXHold V
29. new channel is the same as the copied channel extended by a consecutive number e g IQAnalyzer IQAnalyzer2 The channel to be duplicated must be selected first using the INST SEL command Example INST SEL IQAnalyzer INST CRE DUPL Duplicates the channel named IQAnalyzer and creates a new measurement channel named IQAnalyzer2 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 83 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 83 Example INST CRE IQ IQAnalyzer2 Adds an additional I Q Analyzer channel named IQAnalyzer2 INSTrument CREate REPLace lt ChannelName1 gt lt ChannelType gt lt ChannelName2 gt This command replaces a measurement channel with another one Setting parameters ChannelName1 String containing the name of the measurement channel you want to replace lt ChannelType gt Channel type of the new
30. 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 to the next higher value Usage Event Manual operation See Search Next Peak on page 65 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 65 CALCulate lt n gt DELTamarker lt m gt MAXimum RIGHt This command moves a delta marker to the next higher value The search includes only measurement values to the right of the current marker posi tion 11 9 5 11 9 5 1 Analyzing Multi Carrier Group Delay Measurements 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 65 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
31. results can be exported to a file For more commands concerning data and results storage see the R amp S FSW User Manual Retrieving Results MMEMSmnSTOBBSm TRA nicotine nemen e E emede au Canet ere ee da 127 FORMaEDEXPortDSEPAaLFalort rtt an EEN da ccu a NO REN REG A 127 FORME DEXPORIREAD Gh reset eeu et ease aot tes car eo cease of anta sua Donna seco uuu dud eed 128 FORMSEDEXPOFETRAIDSS 2 re cette e etie Ee AAAA AEE dextra arr enda rore dd abr eR 128 MMEMory STORe lt n gt TRACe Trace lt FileName gt This command exports trace data from the specified window to an ASCII file For details on the file format see chapter 12 2 Reference ASCII File Export Format on page 151 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 FSW User Manual Parameters lt Trace gt Number of the trace to be stored This parameter is ignored if the option Export all Traces and all Table Results is activated in the Export configuration settings see FORMat DEXPort TRACes on page 128 lt FileName gt
32. the DUT Note This result display requires a calibration measurement see Calibrate Execute Reference Calibration on page 47 1 89 MHz Span 18 9 MHz Remote command LAY ADD 1 RIGH GAIN see LAYout ADD WINDow on page 112 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 62 User Manual 1173 9405 02 14 18 R amp S FSW K17 Measurements and Result Display 4 Marker Table Wnd Type X value Mi 13 25 GHz 600 0 kHz 600 0 kHz 2 0 MHz Remote command LAY ADD 1 RIGH MTAB see LAYout ADD WINDow on page 112 Results CALCulate n MARKercm X on page 136 CALCulate lt n gt MARKer lt m gt Y on page 124 User Manual 1173 9405 02 14 19 Definitions 5 Measurement Basics Some background knowledge on basic terms and principles used in Multi Carrier Group Delay measurements is provided here for a better understanding of the required configuration settings 5 1 Definitions Group delay Group delay is a measure of phase distortion and defined as the derivation of phase over frequency def t f a E d with P delta Cf unwrap Ones Cf Peal f Gain Magnitude flatness The gain also referred to as the magnitude flatness or amplitude flatness is defined as the relation between the measured magnitude and the reference calibration
33. the carrier spacing to 200 kHz for 50 carriers SENS CARR SPAC 200 kHz SENS CARR COUN 51 Query the resulting span 10 MHZ SENS FREQ SPAN Set the attenuation and reference level automatically SENS ADJ LEV Set a sweep count of 100 SENS SWE COUN 100 Configure absolute group delay CALC GRPD MODE ABS Configure carrier estimation for each carrier SENS CARR OFFS MODE CARR Query the record length and sample rate determined by the meas settings SENS RLEN SENS SRAT Perform new calibration measurement and wait for completion CAL MCGD WAI Query the state of the calibration measurement CAL MCGD STAT Store the resulting calibration data to a file MMEM STOR MCGD RCAL C TESTS CalData csv Add a Magnitude Reference and replace the Phase by a Gain display Top row 1 Magnitude default 2 Magnitude Reference Bottom row 3 Group Delay default 4 Gain LAY REPL 2 RMAG LAY ADD WIND 3 RIGH GAIN Switch to single mode initiate a new measurement and wait until the sweep has finished Programming Example Measuring Multi Carrier Group Delay INIT CONT OFF INIT WAI Store the results of the multicarrier measurement to a file MMEM STOR MCGD MEAS C TESTS MeasResults csv Formats for Returned Values ASCII Format and Binary Format 12 Annex 12 1 12 2 e Formats for Returned Values ASCII Format and Binary Format 151 e Reference ASCII
34. window result display Data section for individual trace Trace 1 First trace Trace Mode Clear Write Display mode of trace CLR WRITE AVER AGE MAXHOLD MINHOLD x Axis Linear Scaling of x axis linear LIN or logarithmic LOG Start 95000000 Hz Stop 105000000 Hz Start stop value of the display range x Unit Hz Unit of x values Hz with span gt 0 s with span 0 dBm dB with statistics measurements y Axis Linear Scaling of y axis linear LIN or logarithmic LOG Level Range 100 dB Display range in y direction Unit dB with x axis LOG 96 with x axis LIN Ref Position 100 96 Position of reference value referred to diagram limits 0 lower edge Ref Value 0 0 dBm Reference value 95000000 20 5 96000000 20 3 97000000 24 2 y Unit dBm Unit of y values dB V A W depending on the selected unit with y axis LOG or 96 with y axis LIN Values 1001 Number of measurement points Measured values x value lt y value Data section for individual trace Trace 2 Next trace in same window Data section for individual window Window 2 Phase Name of next window Data section for individual trace Trace 1 First trace List of Remote Commands MC Group Delay SENSe ADEMod BANDwidth DEModulation eessssssssseeseeeeenneenneennee nere eereen nennen 145 SENSe ADEMod BWIDthi
35. 100 cent Absolute The labeling of the level lines refers to the absolute value of the refer ence level not available for Linear Percent Relative The scaling is in dB relative to the reference level only available for logarithmic units dB The upper line of the grid reference level is always at 0 dB Remote command DISPlay WINDow lt n gt TRACe lt t gt Y SPACing on page 94 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe MODE on page 93 Configuring a Reference Point and Divisions Defines the displayed range using a reference point and the size of the divisions Y Axis Reference Value Configuring a Reference Point and Divisions Defines a reference value for the y axis in the current unit The y axis is adapted so that the reference value is displayed at the Y Axis Reference Position Remote command DISPlay WINDow lt n gt TRACe lt t gt Y SCALe RVALue on page 94 Y Axis Reference Position Configuring a Reference Point and Divisions Defines the position of the Y Axis Reference Value on the y axis The position is defined as a percentage value where 0 refers to the bottom edge 100 refers to the top edge of the screen The y axis is adapted so that the reference value is dis played at the reference position Remote command DISPlay WINDow lt n gt TRACe lt t gt Y SCALe RPOSition on page 93 Range per Division Configuring a Reference Point and Divisions Defines the value
36. 66 Fnit 66 Importing and Exporting Results eeeene 68 Export F rictlons rer inerenti ced Ia aaan pan SES EEREEER EX XXE ERR ER RRXRSBERRRERERRRRRNR ERE 68 Import F nctions inet rhe ren nhieu R ER IX RRRRRATuRRRRRERRRRRRRRPRRRRRRKRRSRRREREERER 69 How to Perform Measurements in the Multi Carrier Group Delay P leal p e 71 Optimizing and Troubleshooting the Measurement 74 Error and Status MeSSages ccccccseesecreeseeeeeeeeeeeeeeeseeeeeeseeeeeeeeeseeneeeaeseesesseenseeseenenees 75 Remote Commands to Perform Multi Carrier Group Delay Measure LC je 76 Introduction eene EPOD BENE d In HIIS 76 Common Suffixes e tenieia nti ne testen uai Daa ev eir tbe esa EESAN ECAN Mele exe 81 Activating Multi Carrier Group Delay Measurements essss 81 Configuring Multi Carrier Group Delay Measurements 85 Measuring Loading and Storing Calibration Data ssss 109 Configuring the Result Display eene nennen nnn 110 Configuring and Performing Sweeps eene 117 R trieving Results 16 eene e Un ene ELS ENKEN RNEER 123 Analyzing Multi Carrier Group Delay Measurements
37. COUP NG LI 28 Tuer m HR 28 Direct Paths cs 29 Ftigli Pass Filter 1 9 Gh er dete d en PR Ei UR E rete 29 MIG APTOS CISION MUR 29 Input Coupling The RF input of the R amp S FSW 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 86 Impedance For some measurements the reference impedance for the measured levels of the R amp S FSW can be set to 50 Q or 75 Q 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 log 750 500 Remote command INPut IMPedance on page 87 Input Source Settings Direct Path Enables or disables the use of the direct path for small frequencies In spectrum analyzers passive analog mixers are used for the first conversion of the input signal In such mixers the LO signal is coupled into the IF path due to its limited isolation The co
38. DE key on the front panel of the R amp S FSW and select the MC Group Delay application Select the Overview softkey to display the Overview for a Multi Carrier Group Delay measurement Select the Amplitude button and define the required attenuation and reference level for the generated input signal Note Correct attenuation and reference level settings are an important factor for accurate group delay measurement results You can also use the auto leveling function in the R amp S FSW Spectrum application before starting the MCGD applica tion The attenuation and reference level values are then passed on to the new MCGD measurement channel Select the Frequency button to define the input signal s center frequency To measure the absolute group delay select the Trigger button and select the trig ger source External Trigger Select the Multi Carrier Config button to describe the signal and define measure ment settings a Define the carrier spacing b Define the number of carriers tones or the frequency span according to the settings on the generator c Ifthe measurement time determined automatically is not adequate define it manually d To average the results over several sweeps increase the sweep count e To calculate an absolute group delay select Absolute mode for the group delay result Check the displayed results to ensure the measurement configuration is adequate Press the RUN SINGLE key to stop th
39. E COUN CURR Queries the number of started sweeps Usage Query only Retrieving Results The following commands are required to retrieve the results in a remote environment e Retrieving Marker Besults 2 2 eic eene cci Le Ec di e Ergo Ee ERR Re 123 e Retieving Trace Resulls u rh RI ROANG 125 e Exporting Trace Results sssssssssseessssseeenene nennen nennen nnn 126 Retrieving Marker Results Useful commands for retrieving results described elsewhere CALCulate lt n gt DELTamarker lt m gt X on page 135 cCALCulate lt n gt MARKer lt m gt X on page 136 Remote commands exclusive to retrieving marker results CALCulate lt n gt DELTamarker lt m gt X RELAative ccccccccscceescccseeeeeeceeeeeeeceeeeeeeesaueueueusaaeees 123 CALbCulatesmDELTamarkersmis Y 2 ies cederet bx eoa en one tune e ead at nece a La vue 124 GALOGulatesp MARKerSm t Y uiae ceasesst octavi e scu adobe rr aser mra ot rc ars OEA AEEA 124 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 Retrieving Results Usage Query only CALCulate
40. E 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 Note Sequencer Furthermore the RUN SINGLE key controls the Sequencer not individual sweeps RUN SINGLE starts the Sequencer in single mode If the Sequencer is off only the evaluation for the currently displayed measurement channel is updated Remote command INITiate lt n gt IMMediate on page 119 Output Settings 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 118 Sweep Count Defines the number of sweeps to be performed in the single sweep mode Values from 0 to 32767 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 During calibration measurements the phase and amplitude values are averaged over the defined number of sweeps If the trace configurations Average Max Hold or Min Hold are set this value also determines the number of averaging or maximum search procedures In continuous sweep mode if sweep count 0 default averaging is performed over 10 sweeps For sweep count 1 no averaging maxhold or minhold operation
41. ER 45 NUMBER OT Garnes ccssar an a A E A e AAA stance 45 LI T T E 45 Measurement TIME eripere E E E A EENE 45 eer E E A E enti 45 Group Delay MOOD a E O a ad eee nei ee 46 Camer ESUM UON MUERE 46 t3 0 uo 0 RR 46 Multi Carrier Configuration Center frequency Defines the normal center frequency of the signal fmax and span depend on the instrument and are specified in the data sheet Remote command SENSe FREQuency CENTer on page 95 Carrier Spacing Defines the spacing between two carriers The Span on page 37 and the Number of Carriers are adapted accordingly see Dependancy of the span on the number of car riers on page 20 Remote command SENSe CARRier SPACing on page 104 Number of Carriers Defines the number of carriers in the signal The Span on page 37 and Carrier Spac ing are adapted according to the following formula Number of carriers 1 Span Carrier spacing Note When loading calibration data the number of carriers in the stored data must correspond to the currently defined number of carriers for the measurement otherwise loading fails For details see Dependancy of the span on the number of carriers on page 20 Remote command SENSe CARRier COUNt on page 104 Span Defines the frequency span to be measured Only a multiple of the carrier spacing can be defined The Number of Carriers is adapted accordingly see Dependancy of the span on the number of carriers
42. ESENCON CALCulate lt n gt DELTamarker lt m gt MREF i CAL Culate n DEETamarkersm TRAGO eiii ei Eee eei eic eee Sera crore do aped S x Ro Eua CAL Culatesn2z DEETamatrkKerstbs X oce cereo oer o Eas ep sexos a esau easi eet E TAE EITE EEEE 135 CALCulate lt n gt DEL l amarkeremo XRELaltive crecieron icr cedet gei Cone e tap Rd 123 GAL GCulate r DEETamarkerstmo Y onsectetur eta er cv ce ue E erect Ene En ceu 124 CALCulate lt n gt DELTamarker lt m gt STATe m CAL Culate lt n gt zz n ae ina a aa aaa CAL Culatesn gt MARKer lt m gt AOF Farenin enigann a eret esti cori eva ee VE v ae eR ERI CAL Culate lt n gt MARKGrsim gt CALCulate lt n gt MARKer lt m gt LINK TO MARKer lt m gt a CAL Culatesn gt MARKer lt m gt MAXimuUM LEF T tarot eerie tierce be crea e ex t dena i Erud dE 138 CALCulate lt n gt MARKer lt m gt MAXimMUM NEXT 2 ccccceeceeeeeeeeeeeeeeeeeeeeeeeeeaeeesecaaeeeceaeeeseaeeeeseneeeseeeeeeeeeeetes 138 CALCulate n MARKer m MAXimum RIGFEIL 1 caeci ie a nan adn 139 CALCulate n2 MARKer m MAXimum PEAK eeeeesesessssesesesesseeesen nennen nennt nnn NRE Saaai aE 139 CALCulate lt n gt MARKer lt m gt MINimum LEFT CALCulate lt n gt MARKer lt m gt MINimum NEXT CALCulate lt n gt MARKer lt m gt MINIMUM RIGHE iccccesccsciaccccsscenccssstecaccetosscrsecneeoseantectaasecsuedencecaeztarbate
43. File Export FOMA resonanssi 151 Reference CSV File Export Format eret re tx EO 153 Formats for Returned Values ASCII Format and Binary Format When trace data is retrieved using the TRAC DATA Or TRAC IQ DATA command the data is returned in the format defined using the FORMat DATA The possible for mats are described here e ASCII Format FORMat ASCII The data is stored as a list of comma separated values CSV of the measured val ues in floating point format e Binary Format FORMat REAL 32 The data is stored as binary data Definite Length Block Data according to IEEE 488 2 each measurement value being formatted in 32 Bit IEEE 754 Floating Point Format The schema of the result string is as follows 41024 lt valuel gt lt value2 gt lt value n With 4 number of digits 4 in the example of the following number of data bytes 1024 number of following data bytes 1024 in the example lt Value gt 4 byte floating point value Reading out data in binary format is quicker than in ASCII format Thus binary format is recommended for large amounts of data Reference ASCII File Export Format Trace data both measurement and reference traces can be exported to a file in ASCII format for further evaluation in other applications The file consists of the header containing important scaling parameters and a data sec tion containing the trace data Generally the format of this ASCII fi
44. IEW OFF SENSe JADEMod SPECtrum SPAN Frequency Sets queries the frequency span in Hz Note that this command is maintained for compatibility reasons only Use the SENSe FREQuency SPAN on page 105 command for new remote control programs Parameters lt Frequency gt Default unit HZ SENSe JADEMod SPECtrum SPAN ZOOM Value This command sets the span Note that this command is maintained for compatibility reasons only Use SENSe FREQuency SPAN on page 105 for new remote control programs Parameters lt Value gt Default unit HZ Commands for Compatibility SENSe ADEMod SPECtrum SPAN MAXimum Value This command sets the span Note that this command is maintained for compatibility reasons only Use SENSe FREQuency SPAN on page 105 for new remote control programs Parameters Value Default unit HZ SENSe JADEMod SPECtrum MAGNitude RESult lt WindowType gt This command returns the trace data of the first trace of the given type within the mag nitude window Note that this command is maintained for compatibility reasons only Use TRACe lt n gt DATA on page 126 for new remote control programs Query parameters lt WindowType gt WRITe AVERage MINHold MAXHold Usage Query only SENSe JADEMod SPECtrum MAGNitude TYPE lt Trace1 gt lt Trace2 gt lt Trace3 gt This command sets the modes of the first three traces of magnitude windows Note that this co
45. LCulate lt n gt DELTamarker lt m gt X on page 135 Parameters Mode ABSolute Delta marker position in absolute terms RELative Delta marker position in relation to a reference marker RST RELative Example CALC DELT MODE ABS Absolute delta marker position CALCulate lt n gt DELTamarker lt m gt MREF Reference This command selects a reference marker for a delta marker other than marker 1 Parameters Reference Example CALC DELT3 MREF 2 Specifies that the values of delta marker 3 are relative to marker 2 Manual operation See Reference Marker on page 61 CALCulate lt n gt DELTamarker lt m gt STATe State 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 State ON OFF RST OFF Example CALC DELT2 ON Turns on delta marker 2 Manual operation See Marker State on page 60 See Marker Type on page 60 CALCulate lt n gt DELTamarker lt m gt TRACe lt Trace gt This command selects the trace a delta marker is positioned on Note that the corresponding trace must have a trace mode other than Blank Analyzing Multi Carrier Group Delay Measurements If necessary the command activates the marker first Parameters Trace Trace number the marker is assigned to Example CALC DELT2 TRAC 2 Positions delta marker 2 on trace 2 CALCulate l
46. Le eessssssssssssssseseee eene nennen 92 DISPlay WINDow n TRACe t Y SCALe MAXimum eese 92 DISPlay WINDow n TRACe t Y SCALe MINimum eese 92 DISPlay WINDow n TRACe t Y SCALe MODE eeeeee reete 93 DISPlay WINDow n TRACe t Y SCALe PDlVision eere 93 DISPlay WINDow n TRACe t Y SCALe RPOSition esee 93 DISPlay WINDow n TRACe t Y SCALe RVALue eeeeeneeene m 94 DISPlay WINDow n TRACe t Y SPACing essere nennen 94 UE UE 95 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe Range This command defines the display range of the y axis for all traces t is irrelevant Example DISP TRAC Y 110dB Usage SCPI confirmed Manual operation See Range on page 34 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 t is irrelevant Parameters Value numeric value 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 Defining Min and Max Values on page 36 DISPlay
47. MEMory STORe lt n gt TRACe on page 127 Decimal Separator Defines the decimal separator for floating point numerals for the data export files Eval uation programs require different separators in different languages Remote command FORMat DEXPort DSEParator on page 127 8 2 Import Functions The following import functions are available via softkeys in the Save Recall menu which is displayed when you select the Save or Open icon in the toolbar Calibra 5 tion data can also be imported from the Calibration configuration dialog box Loading Calibration Dala cirder critt crc ett etd c tec ttt ce 69 Decimal Separdator ui cocti icem r enero et eri t ue buo deir red HE E aed rete Ld EUR Ye add 70 Loading Calibration Data Loads the calibration data reference data from the selected file csv format to the instrument The current reference data in the MCGD application is overwritten the loa ded data is used for the group delay calculation Import Functions Note When loading calibration data the number of carriers in the stored data must correspond to the currently defined number of carriers for the measurement otherwise loading fails Remote command MMEMory LOAD MCGD RCALibration on page 110 Decimal Separator Defines the decimal separator for floating point numerals for the data export files Eval uation programs require different separators in different languages Remote command FORMat DEX
48. Manual operation 11 9 4 2 Positioning Markers The excursion is the distance to a trace maximum that must be attained before a new maximum is recognized or the distance to a trace minimum that must be attained before a new minimum is recognized Range 0 to 80 dB MCGD 60 dBm RST 6 0 See Peak Excursion on page 64 The following commands position markers on the trace Useful commands for positioning markers described elsewhere CALCulate lt n gt DELTamarker lt m gt X on page 135 Remote commands exclusive to positioning markers CALCulate n MARKer m MAXimum LEFT ccccssscccescccecesceeesseeeceseeecseneeeeeeeeceaneeeses 138 CALCulate lt n gt MARKer lt m gt MAXiIMUM NEXT ccceccceceescceseececeeeececeaceeesseeeseeeeeeceeeeees 138 CALCulate lt n gt MARKer lt m gt MAXimum PEAK cececeeeeeeeeeeeeeeeeeecaeaeaeaeaaaeeeeneteneneees 139 CALCulate lt n gt MARKer lt m gt MAXiMUM RIGHL c ccccccceececeseseeceecececesceseseseeseeeeeesaneeeaes 139 CALCulate lt n gt MARKer lt m gt MINIMUM LEFT 0ccccseeecescceceescceaseeeeeesececeaeeseaaeeeseaeeees 139 CALCulate lt n gt MARKer lt m gt MINIMUM NEXT cccccsscccceeccceceseecessseeceaeceecseessseeeeceeees 139 CALCulate n MARKer m MlNimum PEAK eese nnn 139 CALCulate n MARKer m MINimum RIGHtEt eeesssseesssessssese ness assesses san 139 CALCulate lt n gt MARKer lt m gt
49. NIT SEQ IMM Starts the sequential measurements SYST SEQ OFF SENSe SWEep COUNt lt SweepCount gt This command defines the number of sweeps the R amp S FSW uses to average traces During calibration measurements the phase and amplitude values are averaged over the defined number of sweeps In case of continuous sweeps the R amp S FSW calculates the moving average over the average count In case of single sweep measurements the R amp S FSW stops the measurement and calculates the average after the average count has been reached Parameters lt SweepCount gt If you set a sweep count of 0 or 1 the R amp S FSW performs one single sweep in single sweep mode In continuous sweep mode if the sweep count is set to 0 a moving average over 10 sweeps is performed Range 0 to 32767 RST 0 Example SWE COUN 64 Sets the number of sweeps to 64 INIT CONT OFF Switches to single sweep mode INIT WAI Starts a sweep and waits for its end Usage SCPI confirmed Manual operation See Sweep Count on page 45 11 8 11 8 1 Retrieving Results SENSe SWEep COUNt CURRent This query returns the current number of started sweeps or measurements This com mand is only available if a sweep count value is defined and the instrument is in single sweep mode Example SWE COUNt 64 Sets sweep count to 64 INIT CONT OFF Switches to single sweep mode INIT Starts a sweep without waiting for the sweep end SW
50. Port DSEParator on page 127 9 How to Perform Measurements in the Multi Carrier Group Delay Application The following step by step instructions demonstrate how to perform a Multi Carrier Group Delay measurement with the R amp S FSW K17 option For details on the individual functions and settings see chapter 6 Configuration on page 25 Additionally the procedure to generate the multi carrier signal for the frequency range to be analyzed on a signal generator is described using the R amp S SMW as an example For details on configuring the signal generator see the R amp S SMW User Manual To generate a multi carrier signal for the frequency range of the DUT on an R amp S SMW 1 Preset the signal generator 2 In the Baseband A menu select Multicarrier CW Alternatively the R amp S SMW can produce multi carrier signals using the ARB option 3 In the General tab define the No of Carriers and Carrier Spacing such that the generated signal covers the frequency range in which the DUT is to be analyzed 4 Inthe Optimize Crest Factor Mode field select Chirp to improve the SNR in the MC Group Delay measurement 5 To improve measurement accuracy send a trigger signal to the R amp S FSW a Select the Trigger In tab b For Mode select Auto C Select the Marker tab d For Marker 1 select Restart In the General tab activate the multi carrier signal by switching the state to ON Close t
51. R amp S FSW K192 DOCSis DOCSIS 3 1 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 User Manual 1173 9405 02 14 84 11 4 Configuring Multi Carrier Group Delay Measurements 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 TQAnalyzer2 IQAnalyzer3 Renames the channel with the name IQAnalyzer2 to IQAna lyzer3 Usage Setting only INSTrument SELect lt ChannelType gt lt ChannelName gt This command activates a new measurement channel with the defined channel type or selects an existing measurement channel with the specified name See also INSTrument CREate NEW on page 82 Parameters lt ChannelType gt MCGD Multi Carrier Group Delay application R amp S FSW K17 For a list of available channel types see table 11 1 lt ChannelName gt String containing the name of the channel SYSTem PRESet CHANnel EXECute This command restores the default instrument settings in the current channel Use INST
52. R amp S9FSW K17 Multi Carrier Group Delay Measurement User Manual Mc Fre Gro Q 100 Up Q0 e Tine 3 Delay n 3m 16M Stref BIA ef Cal a 2012 teq 124 Hm e ur CNET ug rier Disp 1173 9405 02 14 ROHDE amp SCHWARZ Test amp Measurement User Manual This manual applies to the following R amp S FSW models with firmware version 2 22 and higher R amp S9 FSWS 1312 8000K08 R amp S FSW13 1312 8000K13 R amp S9FSW26 1312 8000K26 R amp S FSW43 1312 8000K43 R amp S FSW50 1312 8000K50 R amp S FSW67 1312 8000K67 e R amp S FSW85 1312 8000K85 The following firmware options are described e R amp S FSW K17 1313 4150 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 M hldorfstr 15 81671 M nchen 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 abbrevi
53. REPLACO nte apt ter ce eoe Eve Een o pede e re een ER 82 INS TrUMment CRE Ate midP 82 INSTr rmentDEL6lo urere d dpt e e eee ena repre ce Dv tpe Scc dpud 83 MINS TRUM O NES Te 2 ees se cte erecta stents EET 83 INS Tr ment FREE NAN soccer E E esters coeneteesaeec esate E ares oaeeneneess INSTrumMe nt SELSCH oe LAYout ADD WINDow i LEAYout GATalogL WINDOW a scsecitecsoncssescancsscencastvevae E e EEE AEE a Te EEN EO EEA 113 EAYOUtIDENtUIVEWINDOW ict tr ttv e Ee er axe tet veto a dE Ev tu 113 EAYout REMove WINBOW 5 38 trier rer torte rera hr e a rr er a REN Vadi 113 EAYOUTREPEACE IBI DOW P 114 LAY OUESPLIMGR n HR 114 LAYOUT lBIe EDIDI M E M 116 LAYout WINDow lt n gt IDENtify LEAYout WINDowsn 7 REMOVe ni co perti seeedssaconvevssrneeseeketacsasendcesesenshe caused seedvsesyeceadustaztenevcransendnitascndes EAYoutWINDowWSr REPLACE carrots pere dee ced Coda gerat exe teach eng S ce Eee IN Rb ERE RES AANEEN ITE FARK MES MMEMory EOAD MCGDB RCALibration 2 ener rotten nr ttn ther e e ne a Ce tenes 110 MMEMoOry STORe MCGB MEAS iniciar A E EO REDE a I E age ER v EVER EE E 126 MMEMory STORe MGGD RGALIDratlOnm ure rir eb con ATE EAE eS TE ARENSE Ena E 110 MMEMory STORe sn TRAQGSe uciepr entro A eine ep Aa eka de e TX iEn ia 127 OUTPut IRIGge
54. RK2 Y Outputs the measured value of marker 2 11 8 2 Retrieving Results Usage Query only Manual operation See Marker Table on page 18 Retrieving Trace Results The following remote commands are required to retrieve the trace results in a remote environment DISPlay WINDow lt n gt TRACe lt t gt LENGIh ececeeeeeeeeeeeeeeee eee eeeeeae eee trennen nnne nnns 125 ORUE EDY 125 MMEMory S TORS MOGDIMEARS 2i aen ret Ron Annu E AEE AAA AT RS 126 TRACE Sh DET uas eee a raiccodia esca E Eaa aAa a a lE tss a 126 TRACES DATA C H 126 DISPlay WINDow lt n gt TRACe lt t gt LENGth Queries the trace length Return values lt TraceLength gt Number of trace points Usage Query only FORMat DATA lt Format gt This command selects the data format that is used for transmission of trace data from the R amp S FSW to the controlling computer Note that the command has no effect for data that you send to the R amp S FSW The R amp S FSW 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 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 I Q dat
55. 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 27 Configuring Multi Carrier Group Delay Measurements The commands required to configure a Multi Carrier Group Delay measurement in a remote environment are described here igiiur 86 Configuring the Vertical Axis Amplitude Scaling 88 ITO e fv Deere etae t oe Lope tuni bra c adudeto me bi tete n be rer tuc a 95 Triggering Measurements iniit tiet cereis cervo tc ct Yo Lao c Lea ec 97 Multi Carrier Configuration nnne 103 Gonthguripag tlie QU UTES se cia ee coc tenen ode ce cte e e eode Pee n ce aes 106 Automate SOUINGS e 107 11 4 1 Configuring Multi Carrier Group Delay Measurements RF Input INPut ATTenuation PROTection RESet cccccsscccceecccesseecessseecescecesseesssseeesaeceseeneessnees 86 dez ses eec EE 86 I up puer HE 86 INP ut FIETer HPASS STATS iier cretus pae aka ee ner ener popu na Lauper PRE Une nea PRmad 87 INPaEFIETen VISES TAME iocus aed abe etre erae ume tree erede batte tees 87 INP PCG ANCE a noir REIR a a I RII PM RIS UID EA 87 dies EWG METTE EPI 88 INPut ATTenuation PROTection RESet This command resets the attenuator and reconnects the RF input with the input mixer after
56. STeresis UPPer Threshold When the reference level is adjusted automatically using the SENSe ADJust LEVel on page 109 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 an upper threshold the signal must exceed compared to the last measurement before the reference level is adapted automatically Parameters Threshold Range 0 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 11 5 Measuring Loading and Storing Calibration Data Manual operation See Upper Level Hysteresis on page 52 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 the R amp S FSW 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 52 Measuring Loading and Storing Calibration Data The folowing commands are required to perform t
57. Setup In the Mutli Carrier Group Delay application up to 17 markers or delta markers can be activated for each window simultaneously Initial marker setup is performed using the Marker dialog box ker Markers Marker Settings Search Settings Selected State Stimulus Ref Link to Marker Trace ony The markers are distributed among 3 tabs for a better overview By default the first marker is defined as a normal marker whereas all others are defined as delta markers with reference to the first marker All markers are assigned to trace 1 but only the first marker is active DCIS CE MARKS e 59 Selected MIKO aa n a o Feci etelupa ne DD Re deckt a secte 60 MEI 60 Marker Postion X Valil g uxori coeur ctt ltd e htt be cte dte 60 II ico C 60 Reference MalKer etos eto HERR eR a KERN HIE SEXR earaaaadhaneskaaacaseebeandaneaeecneats 61 Linking to Another MaEKG ctt rtt en ttc t Ergo ertt eet egere ub egep cce eene 61 Assigning the Marker to Trage nicer ccv scc dor ne dero 61 PRIAPISM oce eri ur ERE RNEREEN Ee XE EEIN E ORI EXER ESERNN SUSAN REN DRERUKe NN ERRPU ATA 61 Select Marker The Select Marker function opens a dialog box to select and activate or deactivate one or more markers quickly User Manual 1173 9405 02 14 5 Markers Selected State Selected State Selected State Remote command Marker selected via suffix lt m gt in re
58. Smoothing on page 23 Remote command DISPlay WINDow lt n gt TRACe lt t gt SMOothing STATe on page 131 DISPlay WINDow lt n gt TRACe lt t gt SMOothing APERture on page 130 Average Mode Defines the mode with which the trace is averaged over several sweep s A different averaging mode can be defined for each trace This setting is only applicable if trace mode Average is selected How many sweep s are averaged is defined by the Average Count on page 55 Linear The power level values are converted into linear units prior to averag ing After the averaging the data is converted back into its original unit Logarithmic For logarithmic scaling the values are averaged in dBm For linear scaling the behavior is the same as with linear averaging Power Activates linear power averaging The power level values are converted into unit Watt prior to averag ing After the averaging the data is converted back into its original unit Use this mode to average power values in Volts or Amperes cor rectly Remote command SENSe AVERage lt n gt TYPE on page 132 Average Count Determines the number of averaging or maximum search procedures If the trace modes Average Max Hold or Min Hold are set In continuous sweep mode if sweep count 0 default averaging is performed over 10 sweep s For sweep count 71 no averaging maxhold or minhold operations are performed This value is identical to the Sweep Cou
59. Tiate n SEQuencerMODE 2 irme rone R aAA a inci X RD ORARE EAE dis 120 Sy eS Sis UG NOE e dos iiec ie ao cette esos teo decet edt eto does tease do doa eoa AAA aeo urne RENE 121 ISEA SES WEAR CONI tipo cric asa dv rte cid n ed e ca cd br rad 122 SENSe SWEep C OUNECURR n E rrr cepa eto create ruban E Rara e RXRRARRUR 123 Configuring and Performing Sweeps 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 FSW 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 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 FSW is blocked for further commands In this case you must inter rupt processing on the remote channel first in order to abort the measurement To do so send a Device Clear command from the control instrument to the R amp S FSW on a parallel channel to clear all currently active remote channels Depend ing on the used interface and protocol send the following com
60. Wl M 48 RUN SINGLE KOy ueste eti tel ere oce el oes 48 49 S Scaling Configuration Softkey esses 33 Settings remote etaient reed red 92 Y A S icai 4095 96 Y axis remote control psoe orisni 94 Search Configuration softkey sess 63 Select Markers iei acted enn 59 64 DEQUGMNCER e H I 10 Aborting remote 120 Activating remote eee ceeering 120 Mode remote 2 nite eedem 120 cu cd 119 Signal generator 3 Measurement selup eterne thc 22 Signal source Rte need eet ederet LC anaes 88 Single sweep SOflKGy 2 trente ma e eret es 48 DINGIS ZOOM P M 66 Slope TWO GON iiu cett rre terree 42 100 Smoothing iCIie M T edie ets 23 54 Softkeys Amplitude Config assiettes erain 30 Auto Level i Calibrate cR pd t cn e Carrier SPACING neo terni rr tr eer rrt 45 COMER ct 37 45 Continue Single Sweep sssesssssss 49 Continuous Sweep 48 Display Config 66 External 40 Free RU 1c ced oot p edu de 40 Frequericy CONTIG crei entretien 36 Group delay we 46 I Q Power 41 IF POWOE soises iaaii wee 41 Input Source Config wi 27 Lower Level Hysteresis sssessses 52 Marker Config 3 222511 hd en te 58 59 62 Marker tO T
61. a 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 FSW in general and the Spectrum application in particular Furthermore the soft ware functions that enhance the basic functionality for various applications are descri Conventions Used in the Documentation 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 ters refer to the data sheets Basic information on operating the R amp S FSW 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 FSW product page at http www2 rohde schwarz com product FSW 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 FSW by replacing modul
62. a 8 bytes per sample are returned for this format set ting RST ASCII Example FORM REAL 32 Usage SCPI confirmed Retrieving Results MMEMory STORe MCGD MEAS File This command stores the current measurement results all active traces in all windows including calibration traces to the selected file Setting parameters File path and file name of the csv file that contains the measured data Usage Setting only Manual operation See Storing Measurement Results on page 68 TRACe lt n gt DATA Trace This command queries current trace data and measurement results for the specified window For each of the measurement points number is determined by record length See SENSe RLENgth on page 106 the power level phase or group delay value is returned Query parameters Trace TRACE1 TRACE2 TRACE3 TRACE4 Defines the trace whose data is returned Example TRAC3 DATA TRACE1 Returns the measured values for trace 1 in window 3 Usage Query only 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 Query parameters lt TraceNumber gt Trace number TRACE TRACE4 Example TRAC3 X TRACE1 Returns the x values for trace 1 in window 3 Usage Query only 11 8 3 Exporting Trace Results Trace
63. aborted and a message indicating the allowed input frequencies is displayed in the status bar A Trigger Offset Trigger Polarity and Trigger Holdoff to improve the trigger stabil ity can be defined for the RF trigger but no Hysteresis Remote command TRIG SOUR RFP see TRIGger SEQuence SOURce on page 100 I Q Power Trigger Source Trigger Source This trigger source is not available if the optional Digital Baseband Interface or optional Analog Baseband Interface is used for input It is also not available for analysis band widths 2 160 MHz Triggers the measurement when the magnitude of the sampled l Q data exceeds the trigger threshold Remote command TRIG SOUR IQP see TRIGger SEQuence SOURce on page 100 Trigger Level Trigger Source Defines the trigger level for the specified trigger source Trigger Settings For details on supported trigger levels see the data sheet Remote command TRIGger SEQuence LEVel IFPower on page 99 TRIGger SEQuence LEVel IQPower on page 99 TRIGger SEQuence LEVel EXTernal port on page 99 Drop Out Time Trigger Source Defines the time the input signal must stay below the trigger level before triggering again Remote command TRIGger SEQuence DTIMe on page 97 Trigger Offset Trigger Source Defines the time offset between the trigger event and the start of the sweep offset 0 Start of the sweep is delayed offs
64. ace memory only if the new value is lower than the previous one VIEW The current contents of the trace memory are frozen and dis played BLANk Hides the selected trace RST Trace 1 WRITe Trace 2 6 BLANk Analyzing Multi Carrier Group Delay Measurements 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 INIT WAI Starts the measurement and waits for the end of the measure ment Manual operation See Mode on page 54 DISPlay WINDow lt n gt TRACe lt t gt MODE HCONtinuous State This command turns an automatic reset of a trace on and off after a parameter has changed The reset works for trace modes min hold max hold and average Note that the command has no effect if critical parameters like the span have been changed to avoid invalid measurement results Parameters State ON The automatic reset is off OFF The automatic reset is on RST OFF Example DISP WIND TRAC3 MODE HCON ON Switches off the reset function Manual operation See Hold on page 54 DISPlay WINDow lt n gt TRACe lt t gt SMOothing APERture Percentage This command defines the degree aperture of the trace smoothing if DISPlay WINDow lt n gt TRACe lt t gt SMOothing STATe TRUE This setting is only available for Group Delay Magnitude and Gain results Parameters lt Percentage gt
65. ame task In this case the procedure using the touchscreen is described Any elements that can be activated by touching can also be clicked using an additionally connected mouse The alternative procedure using the keys on the instrument or the on screen keyboard is only described if it deviates from the standard operating procedures The term select may refer to any of the described methods i e using a finger on the touchscreen a mouse pointer in the display or a key on the instrument or on a key board 1 3 3 Notes on Screenshots When describing the functions of the product we use sample screenshots These screenshots are meant to illustrate as much as possible of the provided functions and possible interdependencies between parameters The screenshots usually show a fully equipped product that is with all options instal led Thus some functions shown in the screenshots may not be available in your par ticular product configuration Starting the Multi Carrier Group Delay Application 2 Welcome to the Multi Carrier Group Delay 2 1 Application The R amp S FSW K17 option is a firmware application that adds functionality to perform Multi Carrier Group Delay measurements to the R amp S FSW The Multi Carrier Group Delay application features highly accurate group delay measurement for large spans orthogonal measurement method e frequency converted group delay measurement storage and loading functions for reference
66. amp S FSW performs a measurement on the current input data This command selects the way the R amp S FSW determines the length of the measurement Configuring Multi Carrier Group Delay Measurements Parameters Mode AUTO The R amp S FSW determines the measurement length automati cally according to the current input data MANual The R amp S FSW uses the measurement length defined by SENSe ADJust CONFigure DURation on page 107 RST AUTO Manual operation See Resetting the Automatic Measurement Time Meastime Auto on page 52 See Changing the Automatic Measurement Time Meastime Manual on page 52 SENSe ADJust CONFigure HYSTeresis LOWer Threshold When the reference level is adjusted automatically using the SENSe ADJust LEVel on page 109 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 52 SENSe ADJust CONFigure HY
67. an overload condition occured and the protection mechanism intervened The error status bit bit 3 in the STAT QUES POW status register and the INPUT OVLD message in the status bar are cleared For details on the status register see the R amp S FSW User Manual The command works only if the overload condition has been eliminated first Usage Event INPut COUPling lt CouplingType gt This command selects the coupling type of the RF input Parameters 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 28 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 Configuring Multi Carrier Group Delay Measurements Example INP DPAT OFF Usage SCPI confirmed Manual operation See Direct Path on page 29 INPut FILTer HPASs STATe lt State gt Activates an additional internal high pass filter for RF input signals from 1 GHz to 3 GHz This filter is used to remove the harmonics of the R amp S FSW in order to mea sure the harmonics for a DUT for example This function requires an additional high pass filter hardware option Note for RF input signals outside the specified range the high pass fil
68. and selects the scaling of the y axis for all traces lt t gt is irrelevant Parameters lt ScalingType gt LOGarithmic Logarithmic scaling LiNear Linear scaling in LDB Linear scaling in the specified unit PERCent Linear scaling in RST LOGarithmic Example DISP TRAC Y SPAC LIN Selects linear scaling in Usage SCPI confirmed Manual operation See Scaling on page 35 11 4 3 Configuring Multi Carrier Group Delay Measurements UNIT ANGLe Unit This command selects the unit for angles for phase display Parameters Unit DEG RAD RST DEG Example UNIT ANGL DEG Manual operation See Phase Unit Rad Deg on page 36 Frequency SENSE FREQUEN GENTE 2 e ecce aee tec duae te cape dan apnea rs pae kn aa AD ye e RD A Apa 95 SENSE FREQUENCY CENTER SER cetus entourage ta tle ete ea ene eek Enim 95 SENSe FREQuency CENTer STEP AUTO cette teet tette tetti 96 SENSe TFREQuency CENT amp BESTEP LINK at notre Re Rn eene ninh Rin e 96 SENSe FREQuency CENTer STEP LINK FACTor essent 96 SENSE FREQUENCY OPE SB acci nete uote eet cete E eoe tdi a EEEE ARARE 97 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 com
69. asurements Parameters CarrierOffsetMode ESTimate FIXed CARRiers ESTimate A fixed offset is estimated and used for all carriers FIXed The carrier frequencies as defined in the configuration are used possible offsets are not compensated CARRiers The frequency offset of each carrier is estimated and compensa ted when calculating the group delay RST ESTimate Manual operation See Carrier Estimation on page 46 See Estimation Type on page 46 SENSe RLENgth This command returns the record length determined by the current measurement set tings Return values lt SampleCount gt Number of samples captured in one sweep Usage Query only SENSe SRATe This command returns the sample rate set up for current measurement settings Return values lt SampleRate gt Current sample rate used by the application Usage Query only Configuring the Outputs Configuring trigger input output is described in chapter 11 4 4 2 Configuring the Trig ger Output on page 101 DIAG ROSIE SERVICE NSOURCG noiosa iienaa aa a EEN A AENEA 106 DIAGnostic SERVice NSOurce State This command turns the 28 V supply of the BNC connector labeled NOISE SOURCE CONTROL on the R amp S FSW on and off 11 4 7 Configuring Multi Carrier Group Delay Measurements Parameters State ON OFF RST OFF Example DIAG SERV NSO ON Manual operation See Noise Source on page 50 Automatic Settings Som
70. ation eese 12 Windows Adding remote tete tei ee 112 Closing remote sciiicet e trem ese 113 116 COMMUNI aei taa tenet eto ti eletto ex ebd 27 Layout remote 114 Maximizing remote eseseeeesse 111 Quierying remote icone rennes 113 Replacing remote eti niei pne 114 Splitting MEMOS rnt eec 111 Types remote ettet teens 112 X X value Marke m 60 Y Y axis MIX max Values ciim ete eere eti ree Range per division zs Reference posillOn eterne eer Reference val e een reni t eere Scaling Settiigs iiir tet nete ERE D n YIG preselector Activating Deactivating se 29 Activating Deactivating remote 87 Z Zooming Activating remote i io erae ne kek cte 142 Area Multiple mode remote ssssss 142 Area remole x econtra 141 Deactivating 67 Multiple mode 66 Multiple mode remote 142 143 ci 2 e 141 Restoring original display sirisser 67 SINGIG MODS trennen n 66 Single mode remote eme 141
71. ations are used throughout this manual R amp S FSW is abbreviated as R amp S FSW Products of the R amp S SMW family e g R2S SMW200A are abbreviated as R amp S SMW 1 1 1 2 1 3 2 1 2 2 4 1 5 1 5 2 5 3 5 4 5 5 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 7 1 7 2 Contents roris EX 5 About this Manual 5 Documentation OVGIrVieW ciiicccccccceccccecsseeccceesseeececeesteeddeeenstecdeceesteeeceeessteedceeesstedeneesteds 6 Conventions Used in the Documentation eee 7 Welcome to the Multi Carrier Group Delay Application 9 Starting the Multi Carrier Group Delay Application esses 9 Understanding the Display Information eese 10 About the Measurement eeeeeeeeeeeeeeeeeeeeen nennen 13 Measurements and Result Display eeeeeeeeees 15 Evaluation Methods for Multi Carrier Group Delay eene 15 LLL prr E 20 Definitlons errori eie Deine 20 The Multi Carrier Measurement eene enne nennen nennen nnn 20 The Calibration Reference Measurement seen 22 Measurement Setup esseiseeeeeseeseeee essen nenne tnn
72. ato ene EEA or Bote a qe Su HER EXE ER RR RE RR ERRRRRR 104 SENS FREQUEN SPAN Em 105 Configuring Multi Carrier Group Delay Measurements SENSe MTIMe AUTO tarte ttt tette tdt teta taa d ta atat data da 105 BENSe MTIMe etti ertt reir tla kk aga e AR ke RR e nupt ER Reda rd 105 SENSeJTCARRIeGOFFSet near rea nennen apuntan tuu xe co EU uada M perat ea ER yea o Rue taa 105 ISENS ICARRIGiOPFSet MODE oi iuro rtt Core n e te ade aie nude a ea Red a ga 105 SENSe RLENgth scsesceeetete tet tette tent tette tte tert tette ttes d 106 ISENSe SRA ieee tno Ene etI EEERRRU RR IQ E E a 106 CALCulate GRPDelay MODE lt GroupDelayAbsRel gt This command sets the group delay mode for multi carriers to either absolute or rela tive or queries its current state Parameters lt GroupDelayAbsRel gt ABSolute RELative ABSolute Calculates the absolute group delay requires an external trigger RELative Calculates the relative group delay constant delay parts are compensated for RST RELative Manual operation See Group Delay Mode on page 46 SENSe BANDwidth DEMod SENSe BWIDth DEMod Queries the measurement bandwidth in Hz Return values Bandwidth Default unit HZ Usage Query only SENSe CARRier COUNt Count Sets queries the number of carriers Parameters Count Manual operation See Number of Carriers on page 45 SENSe CARRier SPACing lt CarrierSpa
73. bout 30 dB Remote command INPut GAIN STATe on page 91 INPut GAIN VALue on page 91 6 3 2 Scaling the Y Axis The individual scaling settings that affect the vertical axis are described here Note that scaling settings are window specific as opposed to the amplitude settings Depending on the result display different methods of defining the scaling are available To configure the y axis scaling settings Vertical Axis 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 Amplitude from the Overview e Select the AMPT key and then the Scale Config softkey Amplitude Scaling Unit Range Scaling o Logarithmic Range 100 dB Linear Percent gt om Linear with Unit Ref Level Position 100 0 STFA 1 Magnitude Fig 6 1 Scaling settings for Magnitude display Amplitude and Y Axis Scaling Cem cede Amplitude Scaling Unit Scaling according to min and max values Max 360 0 Min 360 0 Scaling according to reference and per div Per Division GGE 50 0 Yo X Ref Value 0 0 Configuring a Reference Point and Divisions 2 ccccseecceeeeeeeeceeeeeeeeeeeeeeeteeneeees 35 L Y Axis Reference ValU cccccccscssssessesssesesesesesesecessssceseseesstaneseseseseseneees 35 L Y Axis Reference Position
74. bration Overwrites Current Reference Data Load Calibration Data Decimal Seperator The values defined by the most recently performed or loaded calibration measurement are displayed at the top of the dialog box Calibrate Execute Reference Calibration sse 47 Storing Calibration Date ote Lec ride anen ENEE EEEE 47 Loading Calibration Dala tt rtr Rt E RINT E KRRRFRai RE RR Pu RIED MR 48 Decimal Separate eerte errata iaaea inian aneian aeeai Na buena neue e Rau ek 48 Calibrate Execute Reference Calibration Starts a new sweep to perform a calibration measurement The status of the running measurement is indicated in a dialog box During this time no other actions can be performed on the R amp S FSW The results are used as reference data for the group delay calculation The date and time of the most recently performed or loaded calibration measurement is indicated in the channel bar and at the top of the dialog box Remote command CALibration MCGD on page 109 Storing Calibration Data Stores the calibration data reference data to the selected file csv format Remote command MMEMory STORe MCGD RCALibration on page 110 6 7 Sweep Settings Loading Calibration Data Loads the calibration data reference data from the selected file csv format to the instrument The current reference data in the MCGD application is overwritten the loa ded data is used for the group delay cal
75. c thie terete niebla e en arr e i Mtr we a Pe A 38 e Multi Carrer Conflguratlgni 2 ceci sederet ore E EIS eI E E 44 e SWOSD Sglllnigs etre drei me x a eR kx Rondo cxR eu Onde xR cd named e M TI ODeMerRE 48 e Output Sellligs ce erre eee ated KEEN eee ede VERA RR eee 49 Automatic Ilo 51 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 Configuration Overview Laat Ref Cal N Ref Level Level Offset Center Sourc att Frequency Offset tevel E EH Amplitude Frequency Trigger Dig B8 Out Trigger Out In addition to the main measurement settings the Overview provides quick access to the main settings dialog boxes The individual configuration steps are displayed in the order of the data flow Thus you can easily configure an entire measurement channel from input over processing to output and analysis by stepping through the dialog boxes as indicated in the Overview In particular the Overview provides quick access to the following configuration dialog boxes listed in the recommended order of processing 1 Input Settings See chapter 6 2 Input Source Settings on page 27 Amplitude Settings See chapter 6 3 Amplitude and Y Axis Scaling on pag
76. cation from the defined span and carrier spacing Measurement time The required duration of the measurement can be determined automatically by the application according to the defined carrier spacing and span or it can be configured manually Averaging results The calculated values can be averaged over several sweeps in order to obtain more reliable results Orthogonal calculation method The orthogonal calculation method aligns the trace points in the result display to the carrier frequencies of the input signal To do so a DFT window length equaling 1 Af is used Absolute vs relative group delay The group delay is calculated relative to the reference signal eliminating any constant delay factors If an external trigger is used the absolute group delay can also be calcu lated The Calibration Reference Measurement 5 3 The Calibration Reference Measurement The Multi Carrier Group Delay measurement method requires a preliminary reference measurement of the input signal without the device under test before the actual group delay measurement This reference measurement is also referred to as the calibration measurement The results of this measurement are stored internally in the R amp S FSW to be used as a reference for the group delay calculation in the subsequent measure ment with the DUT The results of the calibration measurement can be stored to a file and loaded as refer ence data for future measurements with the sam
77. ccesciguasue daaa E a ina 136 a 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 CALCulate lt n gt DELTamarker lt m gt LINK State This command links delta marker m to marker 1 If you change the horizontal position x value of marker 1 delta marker m changes its horizontal position to the same value Parameters State ON OFF RST OFF Example CALC DELT2 LINK ON Manual operation See Linking to Another Marker on page 61 CALCulate n DELTamarker m LINK TO MARKer m State This command links delta marker m1 to any active normal marker m2 If you change the horizontal position of marker m2 delta marker m1 changes its horizontal position to the same value Parameters State ON OFF RST OFF Example CALC DELT4 LINK TO MARK2 ON Links the delta marker 4 to the marker 2 Manual operation See Linking to Another Marker on page 61 Analyzing Multi Carrier Group Delay Measurements CALCulate lt n gt DELTamarker lt m gt MODE Mode This command defines whether the position of a delta marker is provided as an abso lute value or relative to a reference marker for all delta markers m is irrelevant Note that when the position of a delta marker is queried the result is always an abso lute value see CA
78. ccscccscsssssscssssesseseseseseccsesccsseetseeseesaneneseses 35 L Range per DIVISION uos ront san itstocesteseaansulaautcesavnritenesivaaaiestiadivesuts 35 Defining Min and Max ValUCS 2 c ccccceccesenceeeeeeeeeeeeeeceeeeeeeaaeeeeaeeeccaeeeseneeeseueeteeaeeess 36 CSIC ME e 36 Defining a Range and the Reference Level Position For Magnitude displays you can define the position of the reference level for linear scaling or define the range in dB and the position of the reference level Range Defining a Range and the Reference Level Position Defines the displayed y axis range in dB The default value is 100 dB Remote command DISPlay WINDow lt n gt TRACe lt t gt Y SCALe on page 92 Ref Level Position Defining a Range and the Reference Level Position Defines the reference level position i e the position of the maximum AD converter value on the level axis in 9o where 0 96 corresponds to the lower and 100 to the upper limit of the diagram Remote command DISPlay WINDow lt n gt TRACe lt t gt Y SCALe RPOSition on page 93 Amplitude and Y Axis Scaling Scaling Defining a Range and the Reference Level Position Defines the scaling method for the y axis Logarithmic Logarithmic scaling only available for logarithmic units dB and A V Watt Linear Unit Linear scaling in the unit of the measured signal Linear Per Linear scaling in percentages from 0 to
79. ce and data export settings can be configured in the Traces dialog box Trace Data Export tab Trace Data Export Configuration Traces 81111 ame Transient Analysis Traces Trace Data Export Export all Traces and Marker Table Results Indude Instrument Measurement Settings Decimal Separator Point Export to ASCII File Export all Tracesand all Table Res nS Annoin hera yn disc e aia nere 57 Include Instrument Measurement Settings ce necne eee 57 Tac bo Do M UE 57 Decimal Separator rin ninnisin nand n pan ea a Fu ER TUER aeaa a aiaiai iaaa dua 57 Export Traces tOvASCI FIG ennei a rne ote eaae Ru 58 Export all Traces and all Table Results Selects all displayed traces and result tables e g Result Summary marker table etc in the current application for export to an ASCII file Alternatively you can select one specific trace only for export see Trace to Export The results are output in the same order as they are displayed on the screen window by window trace by trace and table row by table row Remote command FORMat DEXPort TRACes on page 128 Include Instrument Measurement Settings Includes additional instrument and measurement settings in the header of the export file for result data See chapter 12 2 Reference ASCII File Export Format on page 151 for details Remote command FORMat DEXPort HEADer on page 128 Trace to Export Defines an individual trace that will be
80. cifics 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 Input Source Settings The input source determines which data the R amp S FSW will analyze Input settings can be configured in the Input dialog box Some settings are also available in the Amplitude tab of the Amplitude dialog box The Digital I Q and the Analog Baseband input sources are only available in applica tions that support I Q data processing and are described in detail in the R amp S FSW I Q Analyzer User Manual Radio Frequency INPUE m 28 6 2 1 Input Source Settings Radio Frequency Input The default input source for the R amp S FSW is Radio Frequency i e the signal at the RF INPUT connector of the R amp S FSW If no additional options are installed this is the only available input source oe E Input Source Power Sensor External Generator Probes Radio Frequency External Input Coupling Mixer Impedance Digital I 9 Q Direct Path Analog High Pass Filter 1 to 3 GHz Baseband YIG Preselector Input Connector INP UC
81. cing gt Sets queries the carrier spacing in Hz between the multiple carriers Parameters lt CarrierSpacing gt Default unit HZ Manual operation See Carrier Spacing on page 45 Configuring Multi Carrier Group Delay Measurements SENSe FREQuency SPAN Frequency Sets queries the frequency span in Hz Parameters Frequency Default unit HZ Manual operation See Span on page 37 SENSe MTIMe AUTO lt MeasTimeAutoMode gt This command enables or disables automatic measurement time selection Parameters lt MeasTimeAutoMode N 1 Enables automatic measurement time selection OFF 0 Measurement time is defined manually RST 1 Manual operation See Measurement Time on page 45 SENSe MTIMe lt MeasTime gt This command queries or sets the measurement time Parameters lt MeasTime gt The measurement time RST 5ms Default unit S Usage Query only Manual operation See Measurement Time on page 45 SENSe CARRier OFFSet Queries the offset in Hz of the carriers compared to the center frequency Return values lt CarrierOffset gt Range Carrier spacing 2 to Carrier spacing 2 Default unit HZ Usage Query only Manual operation See Carrier Estimation on page 46 SENSe CARRier OFFSet MODE lt CarrierOffsetMode gt Defines the method used to estimate the carrier frequency when calculating the multi carrier group delay 11 4 6 Configuring Multi Carrier Group Delay Me
82. commended that you use an input signal with a low crest factor to get the phase response of the DUT Furthermore an external frequency reference is recommended for high accuracy measurements The following list summarizes the necessary measurement and calculation steps 1 Calibration measurement without DUT Peak 2 Measurement with DUT Pmeas k 3 Evaluate group delay dg Cf eec with Pira f unwrap p f 9 S Trace Smoothing Software based smoothing is a way to visually remove anomalies in the trace that may distort the results The smoothing process is based on a moving average over the complete measurement range The number of samples included in the averaging proc ess the aperture size is variable and is a percentage of all samples that the trace con sists of number of samples e g 1000 aperture size e g 5 50 samples Fig 5 2 Sample size included in trace smoothing The application smoothes the trace only after the measurement has been finished and the data has been analyzed and written to a trace Thus smoothing is really just an enhancement of the trace display not of the data itself This also means that smooth ing is always applied after any other trace averagings have been done as these hap pen during the measurement itself You can turn trace smoothing on and off for all traces individually and compare for example the raw and the smooth trace Linear smoothing is base
83. culation Note When loading calibration data the number of carriers in the stored data must correspond to the currently defined number of carriers for the measurement otherwise loading fails Remote command MMEMory LOAD MCGD RCALibration on page 110 Decimal Separator Defines the decimal separator for floating point numerals for the data export files Eval uation programs require different separators in different languages Remote command FORMat DEXPort DSEParator on page 127 Sweep Settings The sweep settings define how often data from the input signal is acquired and then evaluated They are configured via the SWEEP key Continuous Sweep RUN CONT sssessssseeeeeee nennen nennen nennen ennt 48 single Sweep RUN SINGLE irr rere et aE ERE niet ania 48 Copt ljus Single SWeGD ene nate quee de tex des nasal 49 SWeep COUME siiri rnain soraia de a a aiea aaa a a aia iaaa a aaa adea a aiai ieai 49 Continuous Sweep RUN CONT While the measurement is running the Continuous Sweep softkey and the RUN CONT key are highlighted The running measurement can be aborted by selecting the highlighted softkey or key again The results are not deleted until a new measurement is started Note Sequencer Furthermore the RUN CONT key controls the Sequencer not indi vidual sweeps RUN CONT starts the Sequencer in continuous mode Remote command INITiate lt n gt CONTinuous on page 119 Single Sweep RUN SINGL
84. d for export namely the one speci fied by the MMEMory STORe lt n gt TRACe command ALL Selects all active traces and result tables e g Result Summary marker peak list etc in the current application for export to an ASCII file The trace parameter for the MMEMory STORe lt n gt TRACe command is ignored RST SINGle Usage SCPI confirmed Manual operation See Export all Traces and all Table Results on page 57 11 9 Analyzing Multi Carrier Group Delay Measurements The following commands are required to analyze MCGD measurements in a remote environment e Configuring Standard Traces 2 ccc ccccccctieesesccteeneieccectbedecesteeeteceetseteteeeestnesence 129 e Setting Up Individual MarKGls o btt eene tenter nnno enne 132 e General Marker Settings ceteri etre annn iE E E ELE ED EE A RE ERA RE EOS 137 e Searching for Peaks and Positioning the Marker eseeenee 137 e Zooming Into the BISplay ied ote eee retreat ce eta ep Cen RR RERO S RR 141 Analyzing Multi Carrier Group Delay Measurements 11 9 1 Configuring Standard Traces Useful commands for trace configuration described elsewhere DISPlay WINDow lt n gt TRACe lt t gt Y SPACing on page 94 DISPlay WINDow n TRACe t Y SCALe on page 92 Remote commands exclusive to trace configuration DISPlay WINDowensTRAOSSESMODE not ride tte betta t ettet ret recs 129 DISPlay WINDow n TRACe t MODE HCONtinuous
85. d on the following algorithm n l x 5s 024 EO n Linear trace smoothing 5 1 User Manual 1173 9405 02 14 23 Trace Smoothing with S sample number y S group delay magnitude or gain x sample offset from s n aperture size 6 1 i id m TAM Overview Configuration Overview Configuration Multi Carrier Group Delay Application Multi Carrier Group Delay measurements require a special application on the R amp S FSW which you activate using the MODE key on the front panel When you switch the application of a measurement channel to Multi Carrier Group Delay application the first time a set of parameters is passed on from the currently active application 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 measurement channel in Multi Carrier Group Delay application a Multi Carrier Group Delay measurement for the input signal is started automatically with the default configuration The MCGD Meas menu is displayed and provides access to the most important configuration functions e Configuration Overview sessseesesseeeeeeeene nennen ener ener nnne nennen nnns 25 e Input Source Settings nee teet rie dee eie Ri bee us 27 e Amplitude and Y Axis Scallhg etit n od ee as 30 LEM d geil MR 36 e THgger SOUS ee
86. data block This format is useful when the length of the transmission is not known or if speed or other considerations prevent segmentation of the data into blocks of definite length 11 2 Common Suffixes In the Multi Carrier Group Delay application the following common suffixes are used in remote commands Suffix Value range Description m 1 16 Marker n 1 6 Window t 1 4 Trace 11 3 Activating Multi Carrier Group Delay Measurements Multi Carrier Group Delay measurements requires a special application on the R amp S FSW A measurement is started immediately with the default settings INS TIGmebt CRESte D PLPBedte 1 2 31 92 a a FER Pe ACE Ia EID IPM a 82 INS Tr ment CREate NEW ierunt o truth EP Rote ena a EE EEE 82 INSTrument CREate REPL LAC ioscaid inna apa iaaa iari ia iadaaa daa aa anaa 82 INS TramentDELele 2 dee dese ede dete edet pedes OEE aede en aid 83 Activating Multi Carrier Group Delay Measurements DUS Pp aA ES RC EU ELLOS EE 83 INS Truraent RENAME Soc iae coo E ATE ENS a ao EROR SN EY RE EX REN Sek addas 84 INS Trument SEE Bc eiiis cea peace e tpe noa ERR nta ne Bae a epe etwa kp rd 85 SYSTemiPRESebCHANnsIEEXE Culle eoo daa rna aaa a aeri exei neenon 85 INSTrument CREate DUPLicate This command duplicates the currently selected measurement channel i e creates a new measurement channel of the same type and with the identical measurement set tings The name of the
87. ds can be used both for 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 Conformity Commands that are taken from the SCPI standard are indicated as SCPI con firmed All commands used by the R amp S FSW follow the SCPI syntax rules 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 Reset values RST Default parameter values that are used directly after resetting the instrument RST command are indicated as RST values if available Default unit This is the unit used for numeric values if no other unit is provided with the parame ter Manual operation If the result of a remote command can also be achieved in manual operation a link to the description is inserted Introduction 11 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 abbreviations of the keywords
88. e Preamplifier status Window name containing trace Trace 1 Selected trace Trace Mode Clear Write Display mode of trace CLR WRITE AVER AGE MAXHOLD MINHOLD x Axis Linear Start 95000000 Hz Stop 105000000 Hz Scaling of x axis linear LIN or logarithmic LOG Start stop value of the display range x Unit Hz Unit of x values Hz with span gt 0 s with span 0 dBm dB with statistics measurements y Axis Linear Scaling of y axis linear LIN or logarithmic LOG Level Range 100 dB Display range in y direction Unit dB with x axis LOG 96 with x axis LIN 12 3 Reference CSV File Export Format File contents Description Ref Position 100 96 Position of reference value referred to diagram limits 0 96 lower edge Ref Value 0 0 dBm Reference value y Unit dBm Unit of y values dB V A W depending on the selected unit with y axis LOG or 96 with y axis LIN Data section Values 1001 Number of measurement points 95000000 20 5 Measured values x value y value 96000000 20 3 97000000 24 2 isipu Reference CSV File Export Format Measurement results and calibration data can be exported to a file in CSV format for further evaluation in other applications Note that as opposed to the Export Trace to ASCII File storing the measurement results in csv format includes all traces in all win dows not just one single trace The fi
89. e The allowed values range from 100 GHz to 100 GHz The default setting is O Hz Remote command SENSe FREQuency OFFSet on page 97 6 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 R amp S9FSW K17 Configuration Trigger Source Trigger In Out Source Drop Out Time Offset Slope Rising Falling Hysteresis Holdoff External triggers from one of the TRIGGER INPUT OUTPUT connectors on the R amp S FSW are configured in a separate tab of the dialog box Trigger Source Trigger In Out Output Type User Defined Level Tow Pulse Length 100 0 us Send Trigger It Trigger 3 input For step by step instructions on configuring triggered measurements see the main R amp S FSW User Manual rre a A pug A N User Manual 1173 9405 02 14 39 Trigger Settings Ligger Hodo NE E 42 i o M 42 TMQ GOR c 42 EE e o NEED 43 o T 43 L Pulse beng coer esedeaca R 43 BE 5 Eoo RET 43 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 Rem
90. e screen layout If the windows 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 1173 9405 02 14 115 Configuring the Result Display LAY out 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 lt n gt 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 LAYo
91. e 30 Frequency Settings See chapter 6 4 Frequency Settings on page 36 Trigger Settings See chapter 6 5 Trigger Settings on page 38 Multi Carrier Configuration See chapter 6 6 Multi Carrier Configuration on page 44 Output Settings See chapter 6 8 Output Settings on page 49 Analysis See chapter 7 Analysis on page 53 Display Configuration See chapter 7 4 Display Configuration on page 66 Meas menu which is displayed when you press the MEAS CONFIG key O The main configuration settings and dialog boxes are also available via the MCGD Input Source Settings To configure settings P 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 For step by step instructions on configuring Multi Carrier Group Delay measurements see chapter 9 How to Perform Measurements in the Multi Carrier Group Delay Appli cation on page 71 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 FSW except for the default Spectrum application channel Remote command SYSTem PRESet CHANnel EXECute on page 85 Spe
92. e LAYout ADD WINDow on page 112 Phase Displays the phase deviations of the measured signal in rad or versus frequency 100 0 kHz Span 1 0 MHz Remote command LAY ADD 1 RIGH PHAS see LAYout ADD WINDow on page 112 Magnitude Reference Displays the spectrum of the reference signal In contrast to the Spectrum application the frequency values are determined using DFT from the recorded Q data set User Manual 1173 9405 02 14 16 R amp S FSW K17 Measurements and Result Display 4 Magnitude Reference CF 1 0 GHz 100 0 kHz Span 1 0 MHz Remote command LAY ADD 1 RIGH RMAG see LAYout ADD WINDow on page 112 Phase Reference Displays the phase deviations of the reference signal in rad or versus frequency 5 Phase Reference CF 1 0 GHz 100 0 kHz Span 1 0 MHz Remote command LAY ADD 1 RIGH RPH see LAYout ADD WINDow on page 112 Group Delay Displays the time deviations of the signal versus frequency Note This result display requires a calibration measurement see Calibrate Execute Reference Calibration on page 47 User Manual 1173 9405 02 14 17 R amp S FSW K17 Measurements and Result Display 100 0 kHz Span 1 0 MHz Remote command LAY ADD 1 RIGH GRPD see LAYout ADD WINDow on page 112 Gain Displays the gain in magnitude from the reference trace to the measurement trace in dB or percent This diagram characterizes the transmission behavior of
93. e Zoom on page 66 See Restore Original Display on page 67 See R Deactivating Zoom Selection mode on page 67 11 9 5 2 Using the Multiple Zoom DISPlay WINDow n ZOOM MULTiple zoom AREA eese 142 DISPlay WINDow n ZOOM MULTiple zoom STATe esesssesseeneeeneneneennns 143 DISPlay WINDow lt n gt ZOOM 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 ET User Manual 1173 9405 02 14 142 R amp S FSW K17 Remote Commands to Perform Multi Carrier Group Delay Measurements 1 Frequency Sweep 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 66 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 zo
94. e continuous sweep mode Correct attenuation and reference level settings are an important factor for accu rate group delay measurement results You can use the auto leveling function in the R amp S FSW Spectrum application before starting the MCGD application The attenuation and reference level values are then passed on to the new MCGD mea surement channel Select the Multi Carrier Config softkey to re open the Multi Carrier Config dialog box and switch to the Calibration tab User Manual 1173 9405 02 14 72 R amp S9FSW K17 How to Perform Measurements in the Multi Carrier Group Delay Application 14 15 16 17 18 19 20 21 Select the Calibrate button to perform a calibration measurement Alternatively if a calibration measurement has already been performed with the same measurement setup select the Load Calibration Data button to load stored reference data The calibration measurement is performed The status of the running measurement is indicated in a dialog box During this time no other actions can be performed on the R amp S FSW The Calibration tab displays date and time center frequency reference level and further parameters of the most recently performed or loaded calibration measure ment Optionally to store the results from the performed calibration measurement to a CSV file for later use select the Store Calibration Data button Once the reference data is available i
95. e settings can be adjusted by the R amp S FSW automatically according to the current measurement settings and signal characteristics MSRA operating mode In MSRA operating mode the following automatic settings are not available as they require a new data acquisition However the GSM application cannot perform data acquisition in MSRA operating mode SENSe J ADJust CONFigure DUfallgp e caute p otn e t Rent AET NEARER 107 SENSe ADJust CONFigure DURation MODE essere nennen 107 SENSe ADJust CONFigure HYSTeresis LOWE ccccceeeeeeeeeeeeeeeeeeeeeaeaeaeaeaaaeeeeetenenes 108 SENSe ADJust CONFigure HYSTeresis UPPer sees eren 108 SENSE JAD JuSt LEVE CT 109 SENSe ADJust CONFigure DURation lt Duration gt In order to determine the ideal reference level the R amp S FSW 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 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 52 SENSe ADJust CONFigure DURation MODE Mode In order to determine the ideal reference level the R
96. e setup The date and time of the most recently performed or loaded calibration measurement is indicated in the channel bar 5 4 Measurement Setup Before a Multi Carrier Group Delay measurement can be performed the R amp S FSW must be set up in a test environment This section describes the required settings of the R amp S FSW Before starting the measurements the R amp S FSW has to be configured correctly and supplied with power as described in the R amp S FSW Getting Started man ual Preparing For Use Furthermore the application firmware R amp S FSW K17 must be enabled Installation and enabling of the application firmware are described in the R amp S FSW Getting Started manual or in the Release Notes A Multi Carrier Group Delay measurement requires the following devices e A baseband signal generator e g a Vector Signal Generator R amp S SMW e The R amp S FSW with application firmware R amp S FSW K17 Multi Carrier Group Delay e The device under test to be analyzed gt Connect the signal generator output to the RF INPUT connector of the R amp S FSW first without the DUT then with the DUT inbetween For absolute group delay measurement connect the trigger output of the signal gener ator to one of the trigger inputs TRIGGER INPUT of the R amp S FSW see Trigger 2 3 on page 42 Signal generator Trigger Fig 5 1 Multi Carrier Group Delay test setup R amp S9FSW K17 Measurement Basics 5 5 It is re
97. effect Drop out time Dies E EEA 42 Duplicating Measurement channel remote s 82 E Electronic input attenuation sssssssssss 31 32 alite dcr T 75 Errors n P S 31 Estimation I E TA 21 Evaluation Methods oerrinne EE E EE ena 15 Evaluation methods FRING a e nici eei i elisn use LIIS EC 112 Export format Measurement results WAC CS Exporting Calibration data coe ee eeu Measurement results Measurement settings Trace dalai o edere etate ied Traces Traces remote External trigger bes Level remole ep Ee ed ets F File format CSW 153 Trace expOEt ice ee eti e Feet deese 151 Filters High pass remot amp xoa i ia e en enit High pass RF input YIG remote editieren ions cogant Format Bp T 151 Data remote ree ebrei 125 128 Free Run WWI QQ Cl rci iei n eite meae is coe be e reb 40 Frequency Configuration remote Configuration softkey EE uc E G Gain Definitlon 2 3 2 ncn eco a ia 20 Evaluation method 4 5 ciere censeas 18 Group delay perio Definition Mode ds SIMOOUNNG eter Group Delay vs Frequency Evaluation method icri neant 17 H Hardware settings Displayed eter tcr rr rines 11 High pass filter Remote RF input Hold Trace Setting siteisiin rere 54 Hyster
98. efines a reference level offset for all traces t is irrelevant Parameters Offset Range 200 dB to 200 dB RST OdB Example DISP TRAC Y RLEV OFFS 10dB Manual operation See Shifting the Display Offset on page 31 Attenuation INPUEATTOBUBIOE o trier ope eae coeno ette ere tub oe eene ete een eso iua 89 INPUtATTenuallonjAU TO uncis ee Rete ene h nente qr eoa in da AC ARA ERRARE RRRRG RAYS 90 INPUCEA T e M 90 hind TTAUTO E m K 90 INPULEAT Becr pog e ve sundasaeniad caus a de wade nceaawaaaa taeda T 90 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 90 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 5 dB 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 31 Configuring Multi Carrier Group Delay Measu
99. ence on page 16 See Phase Reference on page 17 See Group Delay on page 17 See Gain on page 18 See Marker Table on page 18 Table 11 2 WindowType parameter values for Multi Carrier Group Delay K17 application Parameter value Window type GAIN Gain GDELay Group Delay vs Frequency MAGNitude Magnitude vs Frequency Measurement data MTABle Marker table PHASe Phase vs Frequency Measurement data Configuring the Result Display Parameter value Window type RMAGnitude Magnitude vs Frequency Reference data RPHase Phase vs Frequency Reference data 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 Pepa UU 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 This command queries the index of a particular display window in the active measure ment channel Note to query the name of a particular
100. er as they are displayed on the screen window by window trace by trace and table row by table row Remote command MMEMory STORe MCGD MEAS on page 126 Import Functions Export Trace to ASCII File Opens a file selection dialog box and saves the selected trace in ASCII format dat to the specified file and directory The results are output in the same order as they are displayed on the screen window by window trace by trace and table row by table row Both measurement and reference calibration traces can be exported to an ASCII file However the calibration data stored in an ASCII file cannot be re imported to the R amp S FSW to re import the data use Storing Calibration Data instead Note To store the measurement results for all traces in all windows in csv format use the Storing Measurement Results command in the Save Recall Export menu For details on the file formats see chapter 12 Annex on page 151 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 FSW User Manual Remote command M
101. erms and principles in the context of the mea surement Configuration Analysis A concise description of all functions and settings available to configure measure ments and analyze results with their corresponding remote control command How to Perform Measurements in the Multi Carrier Group Delay Application Step by step instructions to perform a basic MCGD measurement e Measurement Examples Detailed measurement examples to guide you through typical measurement sce narios and allow you to try out the application immediately Optimizing and Troubleshooting the Measurement Hints and tips on how to handle errors and optimize the test setup e Remote Commands for Multi Carrier Group Delay Measurements Remote commands required to configure and perform Multi Carrier Group Delay measurements in a remote environment sorted by tasks Commands required to set up the environment or to perform common tasks on the instrument are provided in the main R amp S FSW User Manual Programming examples demonstrate the use of many commands and can usually be executed directly for test purposes e Annex Reference material e List of remote commands Alphahabetical list of all remote commands described in the manual e Index Documentation Overview 1 2 Documentation Overview The user documentation for the R amp S FSW consists of the following parts e Printed Getting Started manual e Online Help system on the instrument e Documentation CD ROM w
102. ers The following commands define the position of markers in the diagram CALCulate lt n gt DELTamarker lt m gt AOFF cccccccseeeseecccceeeeeeseeueeeceeeuueeeeeeeeeeaeeeaeeeeaesaneees 133 CALCulatesm DELTamarkersmmosLINK 2 ttis use tadoct uve se aet a rrt dtes 133 CALCulate n DELTamarker m LINK TO MARKer m eee nnn 133 Analyzing Multi Carrier Group Delay Measurements CALCulatesm DELTamarkersm MOPDI 2 1 nette nez nei temer re den ena Rd PERRA 134 GCALCulate n DELTamarker m MREF 22 eire ph nns saa n n A naa IIa RR RR MR RR a Ana dE Das aud 134 CALOCulate n DELTamarker m STATe sssssssssssssssesseseee enne enne ntn trennen nan 134 CALCulate lt n gt DEL Tamarkersii gt TRACE sinai aaa coena accen nu Doo i eaaet eun eoe dns 134 CAL Gulate lt n amp DEL Tatmarkeremo2X 31 2 icri esee E Ia I EX EO ye PE Sa PPP EEN 135 CALCulate lt n gt MARKer lt m gt AOFF ccccccccccsssceceeccceceecesessececeaeccesuseeseseeeecaaceseseseeseaeees 135 CALCulate lt n gt MARKer lt m gt LINK TO MARKEr lt m gt cccssccccssscecesececeesceesseseceeeeeeseaneeeaaes 135 CAL Gulate n MARKer m STATe 2 2 22 2 trier eo eL Ep netus ec uaa ne co aea Dac Deme ees 136 CALCulate lt n gt MARKer lt m gt TRACE ccccsscccessseceecccceenecesssseceeeecesenecesseeeceneceeeeeeeeaaees 136 GAEGCulateens iMARKeESIISIX Lii eiui cct ee ce e pape dod e cene sch dante dads apaiaa
103. es 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 website on the R amp S FSW product page at http www2 rohde schwarz com product FSW html gt Downloads gt Firmware 1 3 Conventions Used in the Documentation 1 3 1 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 Conventions Used in the Documentation 1 3 2 Conventions for Procedure Descriptions When describing how to operate the instrument several alternative methods may be available to perform the s
104. esis Lower Auto level Trigger dens Upper Auto level 1 Q Power BE 41 Trigger level remote erret 99 IF Power TRigger cote Trigger level remote Impedance ute 87 Iu 28 Importing Calibration data 2 e terrent cte 69 Input Coulplilig onn sia ienie etre 28 Coupling remote uie te 86 Overload remote irinin aai 86 Settings Cac 27 32 Source Configuration softkey ue Source Radio frequency RF 2 28 Inistall tiOri s iiit e ott tet tete rta 9 K Keys LINES not used eor te ete rre nies 25 MAIR eee 58 MKR 7 easet 63 64 MKR FUNCT not used ss 25 Peak Search 285 RUN Belo gg 48 R N SINGLE tette tme tetro scat 48 49 L Linking MArK6rS cae he ecd ca hr DR 61 62 b O feedthroughidisccom oderit oret qo aene Fees eet 29 Loading Calibration data siose oieee Lower Level Hysteresis M Magnitude flatness S66 Gal eA TEE E SEE 20 Magnitude vs Frequency Evaluation method 5 neces 15 16 Marker table Evaluation Method uico ree e coner rcd 18 Marnkerio Wace M T 61 Markers Assigned trace cere peer herr 61 Basic settings Configuration remote control sssss 132 Configuration softkey ssssss 58 59 62 Deactlvatirig rc err t n erre era 61 Delta marker
105. esis 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 UPPer on page 108 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 108 Trace Settings 7 Analysis 7 1 General result analysis settings concerning the trace markers windows etc can be configured via the Analysis button in the Overview They are identical to the analy sis functions in the base unit except for the special window functions Trace SOUS ce coiere inne s eased x xr nne RED RA ERR vi aubinger odenaesarviehimaannasts Trace Data Export Configuration esses ED n P Display Conflguketofni oerte Unde Ere en ea eau a EA ined RR e asse RUE Fives MM c Trace Settings The trace settings determine how the measured data is analyzed and displayed in the window Depending on the result display between 1 and 4 traces may be displayed
106. et 0 Sweep starts earlier pre trigger Remote command TRIGger SEQuence HOLDoff TIME on page 98 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 Remote command TRIGger SEQuence IFPower HYSTeresis on page 98 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 Remote command TRIGger SEQuence IFPower HOLDoff on page 98 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 100 Trigger 2 3 Defines the usage of the variable TRIGGER INPUT OUTPUT connectors where Trigger 2 TRIGGER INPUT OUTPUT connector on the front panel Trigger 3 TRIGGER 3 INPUT OUTPUT connector on the rear panel Trigger Settings Trigger 1 is INPUT only Note Providing trigger signals as output is described in detail in the R amp S FSW User Manual Input The signal at the connector is used as an external tr
107. ever eco aaa Hen aba RU MEN grido CONTINUOUS AREE LESE INI Tiatesns SEQUencer ABORLE cs etre a sc e eR ge tpa ees E Le ead 120 INI Tiatesnz SEQuencer IMMediale 2 citri tent ena Alec arn e eorr e ties cath 120 INITiiatesms SEQuencerMOPBE rrt rtt eti A eost E n LE RI gera esee Ae ap LBE gave ANa 120 INITiate n IMMediate rtr rnnt ener rr net rere ntn rec nenees 119 INPut AT TOBtaltionk s eoo eiecit eee erc coe oer eerte E eee Oc Rien ti Ense Liste ea Ee Pv ursa Deng 89 MIN UTE AST TRUE Mio AUTO eect cDC n 90 INPUutAT Tenuation PRO Tection RES t scence ernst aragonite alae cer e es 86 INPut COUPling INPO DRAT Wi c M INPUHEAT oc lizisdz gue Ulo EE 90 INPUEEATT S TATG coetu ata e neo ra ENSE PNE eIN ERRARE E ge YE ENTRE cse xKT ERE YER SAVER UNT SE servers FORSE EEUU TK d eYe ia 90 INPubEIETerC HPASSES AT eontra rre en Y re ER nx eer er er ertet dp n n ee pn 87 INPut FIETeiYIGES TATe ee rt iier are ete rea re etae a Scr eei eee E er roe Ree e e Er ve ceed 87 INPut GAIN STATe i INPUEGAINEVA LUS exces acer sra E iae E SA daemons INPUEIMPGdaNn GO ies c ia aster EE a a RNO AENEAN E aA EE EREN EEEREN MIN RUDE SELCI an o E pa A a E A INSTr ment CREate DUPlicale there re terr a a ined eene ERE Reed 82 INS Tr ment GREate
108. exported to a file This setting is not available if Export all Traces and all Table Results is selected Decimal Separator Defines the decimal separator for floating point numerals for the data export files Eval uation programs require different separators in different languages Remote command FORMat DEXPort DSEParator on page 127 Markers Export Trace to ASCII File Opens a file selection dialog box and saves the selected trace in ASCII format dat to the specified file and directory The results are output in the same order as they are displayed on the screen window by window trace by trace and table row by table row Both measurement and reference calibration traces can be exported to an ASCII file However the calibration data stored in an ASCII file cannot be re imported to the R amp S FSW to re import the data use Storing Calibration Data instead Note To store the measurement results for all traces in all windows in csv format use the Storing Measurement Results command in the Save Recall Export menu For details on the file formats see chapter 12 Annex on page 151 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 suc
109. g box horizontal Search Settings tab The remote commands required to define these settings are described in chap ter 11 9 4 Searching for Peaks and Positioning the Marker on page 137 e Marker Search SOuinGS 2 i cvcisessavecceceveesrecedvevccceeviessandadesusecdietiescecdevenccdivess 63 e Positioning FUteIOfiS e ceo eee e EE a RRR ERREUR NAR a KNEE NURR E NNR RSER Eaa 64 Marker Search Settings Markers are commonly used to determine peak values i e maximum or minimum val ues in the measured signal Configuration settings allow you to influence the peak search results These settings are available as softkeys in the Marker To menu or in the Search Set tings 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 Settings tab e Inthe Overview select Analysis and switch to the vertical Marker Config tab Then select the horizontal Search Settings tab Search Mode for Next Peak a e rei eec ete eet eode ese echec eet ecos 63 Peak Xe Sioll etii eei eura ce oer ces eve odes ead ue de ccv redes eee vases eee alpes eeu deabus EEUU 64 Search Mode for Next Peak Selects the search mode for the next peak search 7 3 2 2 Markers Left Determines the next maximum minimum to the left of the current peak Absolute Determines the next maximum minimum to either side of the cu
110. h 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 FSW User Manual Remote command MMEMory STORe lt n gt TRACe on page 127 7 3 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 Press the MKR key then select the Marker Config softkey MARKER SOUMNGS 5c 58 e Marker Search Settings and Positioning Functions eeeeeeeeeeess 63 7 3 1 Marker Settings Marker settings can be configured via the MARKER key or in the Marker dialog box To display the Marker dialog box do one of the following e Press the MKR key then select the Marker Config softkey e Inthe Overview select Analysis and switch to the vertical Marker tab R amp S9FSW K17 Analysis 7 3 1 1 The remote commands required to define these settings are described in chap ter 11 9 3 General Marker Settings on page 137 e Individual Marker Setup 3 ine bere Ee aaa aa lessened AREEN ASEA 59 e General Marker Settings iieiuiaiciciueeeeccieenece cci enumerat km nk nA mere sane dk 62 Individual Marker
111. he Multi Carrier CW A menu Set RF A to ON to activate the RF modulation o o N 9 Select the FREQ key to define the center frequency of the test signal 10 Select the LEVEL key to define the generator s output power To perform the MC Group Delay measurement on the R amp S FSW 1 Touse the trigger from the signal generator on the R amp S FSW for example to cal culate an absolute group delay connect the trigger output of the signal generator to the trigger input of the R amp S FSW 2 To synchronize the reference frequencies used by the signal generator and the R amp S FSW use an external reference frequency a Connect the external reference output of the signal generator REF OUT to the external reference input on the rear panel of the R amp S FSW REF INPUT 1 20 MHz R amp S9FSW K17 How to Perform Measurements in the Multi Carrier Group Delay Application 10 11 12 13 b On the R amp S FSW press the SETUP key then select the Reference softkey c In the Reference Frequency Input area select the used external reference Connect the RF A output of the signal generator to the RF INPUT connector on the front panel of the R amp S FSW without the DUT Configure the signal generator to output a multi carrier signal in the frequency range in which the DUT is to be analyzed as described in To generate a multi carrier signal for the frequency range of the DUT on an R amp S SMW on page 71 Press the MO
112. he calibration measurement and load and store the calibration data M ocispHduieelp P HR 109 CALibration MG GD S TAT8 2 2 rise ree reuse dv dax aed os Idee va coe cep ev eee uade cdd 109 MMEMoncEOAD MOGD ROALIDIEaOR uec cu a hn rore re enero toan saa 110 MMEWMory STORe MCGD RCALibration eese nennen nennen nnns 110 CALibration MCGD This command initiates a new calibration You can synchronize to the end of the mea surement as usual with OPC OPC or WAI Example CAL MCGD WAI Performs a calibration measurement and waits for the results Usage Event Manual operation See Calibrate Execute Reference Calibration on page 47 CALibration MCGD STATe This command queries the calibration status of the Multi Carrier Group Delay applica tion Return values State ON 1 Calibration has been performed reference data is available OFF 0 Calibration has not yet been performed or is currently running reference data is not yet available 11 6 11 6 1 Configuring the Result Display Usage Query only MMEMory LOAD MCGD RCALibration File This command loads the calibration data stored in the selected file and replaces the current data Setting parameters File path and file name of the csv file that contains the calibration data Usage Setting only Manual operation See Loading Calibration Data on page 48 MMEMory STORe MCGD RCALibration F
113. he connector is used as an external trigger source by the R amp S FSW No further trigger parameters are available for the connector Output The R amp S FSW 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 102 OUTPut TRIGger lt port gt DIRection on page 101 Automatic Settings Output Type Trigger 2 3 Type of signal to be sent to the output Device Trig Default Sends a trigger when the R amp S FSW triggers gered Trigger Sends a high level trigger when the R amp S FSW is in Ready for trig Armed ger state This state is indicated by a status bit in the STATus OPERation reg ister bit 5 as well as by a low level signal at the AUX port pin 9 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 102 Level Output Type Trigger 2 3 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 102 Pulse Length Output Type Trigger 2 3 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 103 Send Trigger Output Type
114. i e when you move a marker in one window the markers in all other windows are moved to the same x value 7 3 2 7 3 2 1 Markers Linking markers is only possible if compatible reference data is available or no refer ence data at all Compatible reference data means the settings used to perform cali bration were the same as the currently active measurement settings If measurement settings are changed that do not match the reference data linking markers is no longer possible and the function is automatically deactivated An exception to this rule is the center frequency If a different center frequency was used for calibration the markers can still be linked However in this case the markers are not moved to a specific x value but to the same horizontal position relative to the diagram edge Remote command CALCulate lt n gt MARKer lt m gt LINK on page 137 Marker Search Settings and Positioning Functions Several functions are available to set the marker to a specific position very quickly and easily or to use the current marker position to define another characteristic value In order to determine the required marker position searches may be performed The search results can be influenced by special settings Most marker positioning functions and the search settings are available in the MKR gt menu Search settings are also available via the MARKER key or in the vertical Marker Con fig tab of the Analysis dialo
115. iew softkey from any menu see chapter 6 1 Configuration Over view on page 25 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 The number of channels that can be configured at the same time depends on the avail able memory on the instrument 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 If activated the measurements configured in the currently active channels are per formed one after the other in the order of the tabs The currently active measurement is indicated by a 8 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 FSW User Manual 2 2 Understanding the Display Information The following figure shows a measurement diagram during analyzer operation All dif ferent information areas are labeled They are explained in more detail in the following sections R am
116. igger source by the R amp S FSW No further trigger parameters are available for the connector Output The R amp S FSW 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 102 OUTPut TRIGger port DIRection on page 101 Output Type Trigger 2 3 Type of signal to be sent to the output Device Trig Default Sends a trigger when the R amp S FSW triggers gered Trigger Sends a high level trigger when the R amp S FSW is in Ready for trig Armed ger state This state is indicated by a status bit in the STATus OPERation reg ister bit 5 as well as by a low level signal at the AUX port pin 9 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 102 Level Output Type Trigger 2 3 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 102 Pulse Length Output Type Trigger 2 3 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 103 Send Trigger Output Type Trigger 2 3 Sends a user defined trigger to the output connecto
117. ile This command stores the current calibration data to the selected file Setting parameters File path and file name of the csv file that will contain the calibra tion data Usage Setting only Manual operation See Storing Calibration Data on page 47 Configuring the Result Display The commands required to configure the screen display in a remote environment are described here General Window Commands ere EE eR tele eh 110 e Working with Windows in the Display rrt etit eerte de 111 General Window Commands The following commands are required to configure general window layout independent of the application Note that the suffix n always refers to the window in the currently selected measure ment channel see INSTrument SELect on page 85 o EL EA FORMA o E 110 bpISPlayPWINDGwsens S MEE ierat Rene meruerat a onere eee xta 111 DISPlay FORMat Format This command determines which tab is displayed Configuring the Result Display Parameters Format SPLit Displays the MultiView tab with an overview of all active chan nels SINGIe 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 see LAYout SPLitter on page 114
118. ile name and storage location and select OK User Manual 1173 9405 02 14 73 10 Optimizing and Troubleshooting the Mea surement If the results do not meet your expectations try the following methods to optimize the measurement Calibration fails Check the connection from the signal generator to the R amp S FSW Check the settings on the signal generator e Check the input signal at the R amp S FSW No trace visible in Magnitude Reference and Phase Reference windows e No calibration data is available perform a calibration measurement without the DUT or load stored calibration data No trace visible in Group Delay window e No calibration data is available perform a calibration measurement without the DUT or load stored calibration data e MCGD configuration is not compatible to the current calibration reference data Perform a new calibration or adjust measurement settings to fit the calibration data see chapter 6 6 2 Calibration on page 46 Group delay results are not calculated correctly e Check the connections from the DUT to the R amp S FSW and to the signal generator e Repeat the calibration measurement without the DUT or load stored calibration data from the same measurement setup e Check if the MCGD configuration on the R amp S FSW fits to the signal sent by the generator Connect an external reference to the R amp S FSW to improve accuracy see the R amp S FSW User Manual
119. ith 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 It offers quick context sen sitive access to the complete information needed for operation and programming Online help is available using the icon on the toolbar of the R amp S FSW Web Help The web help provides online access to the complete information on operating the R amp S FSW and all available options without downloading The content of the web help corresponds to the user manuals for the latest product version The web help is availa ble from the R amp S FSW product page at http www rohde schwarz com product FSW html Downloads Web Help 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 FSW product page at http www rohde schwarz com product FSW 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 Document
120. l 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 43 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 trigger port 2 front 3 trigger port 3 rear Usage Event Manual operation See Send Trigger on page 43 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 trigger port 2 front 3 trigger port 3 rear Parameters lt Length gt Pulse length in seconds Manual operation See Pulse Length on page 43 Multi Carrier Configuration The following commands are required to configure the multi carrier measurement CALGCulate GRPDelay MODE 2 5 7 eruere cec vet aed asc aec eee e ay ea ea rae dn 104 ISENSEJBANDwWIdIFEDEMOR 5 tour yer ae ee oar EY e ERR eee EFI e Ye eek Ree eee si enn 104 SENS amp IBWIDIh DEMOH 2 oer trea cono rt den er ena ea eere rrr E a EY Y xe LE erre tet er noto 104 SENS amp ICARRISECODUNL occi ciat esa ttt sain eU daa eco eue aeos e esu Va pec T ges eee ap aucun 104 SENSeJOCARRIGESPAGIBE a itas
121. le can be processed by spreadsheet calculation programs e g MS Excel Different language versions of evaluation programs may require a different handling of the decimal point Thus you can define the decimal sep arator to be used decimal point or comma see Decimal Separator on page 48 Reference ASCII File Export Format The data of the file header consist of two columns separated by a semicolon parame ter name numeric value The data section contains the measured data in two columns which are also separated by a semicolon Table 12 1 ASCII file format for trace export File contents Description Header data Type R amp S FSW Instrument model Version 1 30 Firmware version Date 20 Jan 2012 Date of data set storage Mode MCGD Channel type Ref Level 0 Reference level Level offset 0 Rf Att 10 Reference level offset Input attenuation EI Att 0 Electronic attentuation Center Freq 10000000 Hz Center frequency Freq Offset 0 Hz Frequency offset Span 10000000 Hz Frequency range Carrier Spacing 10000000 Hz Distance between two carriers Meas Time 0 00003128125 s Measurement time Group Delay Absolute Value type for group delay Carrier Offset AUTO Auto mode for carrier offset Carrier Offset 0 Hz Carrier offset value Sweep Count 0 Number of sweeps set Preamplifier OFF Window 1 Magnitud
122. le consists of the header containing important parameters and a data section containing the measurement data Generally the format of this CSV file can be processed by spreadsheet calculation pro grams e g MS Excel Different language versions of evaluation programs may require a different handling of the decimal point Thus you can define the decimal separator to be used decimal point or comma see Decimal Separator on page 48 The data of the file header consist of three columns each separated by a semicolon parameter name numeric value basic unit The data section contains the measured data in two columns which are also separated by a semicolon Table 12 2 CSV file format for calibration data export File contents Description Header data Type R amp S FSW K17 Reference Calibration Type of data Version 1 40 Firmware version Date 20 Jan 2012 Date of data set storage Mode MCGD Channel type Center Freq 10000000 Hz Center frequency Freq Offset 0 Hz Frequency offset Span 10000000 Hz Frequency range Reference CSV File Export Format File contents Number of Carriers 51 Description Number of carriers Carrier Spacing 10000000 Hz Distance between two carriers Meas Time 0 00003128125 s Measurement time Sweep Count 0 Sweep count Trace type Amplitude Reference Calibration Data source and result display Magnitude Reference x Unit Hz
123. lications are not described here See the R amp S FSW User Manual for a description of the standard functions Export FUCO iecore 62e bec a a adna ian Eea iiia Ta aaie D 68 e Import FUNCIONS ascidian ai aa aa tdi ed d n e Le dus 69 8 1 Export Functions CT The following export functions are available via softkeys in the Save Recall menu which is displayed when you select the Save or Open icon in the toolbar Some r5 functions are also available via softkeys or dialog boxes in the corresponding menus e g trace data or calibration data Storing Calibration Data irre A aera 68 Storing Measurement ReSHIIS oer rri edt e e a tr ue HE Ree ERR Re 68 Export Trace to ASCIIIQ ectetuer nut n Re ena e aqux nae yeh ERE ne e a pa nina 69 Decimal Sedi et atcur tarte a a a ta ner cbe e RE Cu gu 69 Storing Calibration Data Stores the calibration data reference data to the selected file csv format Remote command MMEMory STORe MCGD RCALibration on page 110 Storing Measurement Results Stores the currently displayed measurement results i e all traces in all windows to the selected file csv format The results are output in the same order as they are displayed on the screen window by window trace by trace and table row by table row Note To store the results of an individual trace or all traces in ASCII format dat use the Export Trace to ASCII File function The results are output in the same ord
124. lification is considered when the trigger level is analyzed If defined a reference level offset is also considered The input signal must be between 500 MHz and 8 GHz Parameters lt TriggerLevel gt For details on available trigger levels and trigger bandwidths see the data sheet RST 20 dBm Example TRIG LEV RFP 30dBm TRIGger SEQuence RFPower HOLDoff Time This command defines the holding time before the next trigger event Note that this command is available for any trigger source not just RF Power Note that this command is maintained for compatibility reasons only Use the TRIGger SEQuence IFPower HOLDoff on page 98 command for new remote control programs Parameters Time Default unit S TRIGger SEQuence SLOPe Type 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 42 TRIGger SEQuence SOURce Source 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 Configuring Multi Carrier Group Delay Mea
125. 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 This is only possible for single sweep mode See also INITiate lt n gt CONTinuous on page 119 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 CALCulate 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 sweep mode See also INITiate lt n gt CONTinuous on page 119 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 MA
126. ly using INITiate lt n gt SEQuencer IMMediate on page 120 To deactivate the Sequencer use SYSTem SEQuencer on page 121 Suffix n irrelevant 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 121 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 FSW application performs measurements sequentially Before this command can be executed the Sequencer must be activated see SYSTem SEQuencer on page 121 Configuring and Performing Sweeps A detailed programming example is provided in the Operating Modes chapter in the R amp S FSW 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 FSW User Manual Suffix n irrelevant Parameters Mode SINGIe Each measurement is performed once rega
127. m SPAN ZOOM sesssssssessissieeen ennt hh nh nent nnn irent snnt 146 SENSe JADEMod SPECtrum SPAN MAXimum sessi nnns 147 SENSe JADEMod SPECtrum MAGNitude RESuIt cceeeeeeceeeeececeeeeeeeeeaeaeaeaeaeaeenenenenes 147 SENSe ADEMod SPECtrum MAGNitude TYPE eeeccnttt tnn 147 SENSe ADEMod M PIM9 cao p tant prot x e eter rera notet d suey teeth eb AAAA AEAEE 147 SENSe IADEMOGO M TIMGEALI TO uia i eto otro ot ooo cec et euet cuneo eto rave con da eee ed 147 SENSe ADEMod RLENGth eececce tette tet tette ttt tni 148 SENSE ADEMOd S RATS eoo puecec urere a ent rti pret ok ec i pRRe te coco P Rau see opere pei neadan Da RU E RUNE 148 SENSE ADEMPTA Ta ericoaracsecn rts tide reris bie dU bebes bL rl ru rd data 148 CALCulate lt n gt FEED Evaluation This command selects the evaluation method of the measured data that is to be dis played in the specified window This command queries or sets the diagram type for magnitude or for phase Note that this command is maintained for compatibility reasons only Use the LAYout commands for new remote control programs see chapter 11 6 2 Working with Win dows in the Display on page 111 Parameters Evaluation XFRequency SPECtrum MAGNitude Magnitude diagram XFRequency SPECtrum PHASe Phase diagram DISPlay WINDow lt n gt TYPE lt ResultType gt This command selects the res
128. mand 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 Manual operation See Center frequency on page 37 SENSe FREQuency CENTer STEP lt StepSize gt This command defines the center frequency step size Configuring Multi Carrier Group Delay Measurements You can increase or decrease the center frequency quickly in fixed steps using the SENS FREQ UP AND SENS FREQ DOWN commands see SENSe FREQuency CENTer on page 95 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 37 SENSe FREQuency CENTer STEP AUTO lt State gt This command couples or decouples the center frequency step size to the span Parameters lt State gt ON OFF 0 1 RST 1 Example FREQ CENT STEP AUTO ON Activates the coupling of the step size to the span SENSe FREQuency CENTer STEP LINK lt CouplingType gt This command couples and decouples the center f
129. mands Visa viClear e GPIB ibcir e RSIB RSDLLibclr 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 sweep 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 Configuring and Performing Sweeps Suffix n irrelevant Usage Event Manual operation See Continue Single Sweep on page 49 INITiate lt n gt CONTinuous State This command controls the sweep mode for an individual measurement channel Note that in single sweep mode you can synchronize to the end of the measurement with OPC OPC or WAI In continuous sweep mode synchronization to the end of the measurement is not possible Thus it is not recommended that you use continuous sweep mode in remote control as results like trace data or markers are only valid after a single sweep end synchroni
130. ment results even though this is not immediately apparent from the display User Manual 1173 9405 02 14 11 Understanding the Display Information of the measured values e g transducer or trigger settings This information is dis played only when applicable for the current measurement For details see the R amp S FSW Getting Started manual Window title bar information For each diagram the header provides the following information 1 Magnitude SOO Fig 2 1 Window title bar information in Multi Carrier Group Delay application 1 Window number 2 Window type 3 Trace color 4 Trace number 5 Trace mode Diagram footer information The diagram footer beneath the diagram contains the center frequency and span and the range displayed per division Status bar information Global instrument settings the instrument 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 R amp S FSW K17 About the Measurement 3 About the Measurement Frequency delay in transmitted signals All frequency components of a signal are delayed when passed through a device such as an amplifier a loudspeaker or propagated through space or a medium such as air This signal delay will be different for the various frequencies unless the device has the property of being linear phase The delay variation means that
131. mmand is maintained for compatibility reasons only Use DISPlay WINDow lt n gt TRACe lt t gt MODE on page 129 for new remote control programs Parameters lt Trace1 gt WRITe AVERage MINHold MAXHold VIEW OFF lt Trace2 gt WRITe AVERage MINHold MAXHold VIEW OFF lt Trace3 gt WRITe AVERage MINHold MAXHold VIEW OFF SENSe ADEMod MTIMe lt MeasTime gt This command queries or sets the measurement time Note that this command is maintained for compatibility reasons only Use SENSe MTIMe on page 105 for new remote control programs Parameters MeasTime Default unit S Usage Query only SENSe ADEMod MTIMe AUTO lt MeasTimeAutoMode gt This command enables or disables automatic measurement time selection 11 11 Programming Example Measuring Multi Carrier Group Delay Note that this command is maintained for compatibility reasons only Use SENSe MTIMe AUTO on page 105 for new remote control programs Parameters lt MeasTimeAutoMode gt SENSe ADEMod RLENgth This command returns the record length set up for current measurement settings Note that this command is maintained for compatibility reasons only Use the SENSe RLENgth on page 106 command for new remote control programs Return values lt SampleCount gt Usage Query only SENSe ADEMod SRATe This command returns the sample rate set up for current measurement settings Note that
132. mote commands 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 lt n gt MARKer lt m gt MAXimum PEAK on page 139 CALCulate n DELTamarker m MAXimum PEAK on page 140 Search Next Peak Sets the selected marker delta marker to the next 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 138 CALCulate n DELTamarker m MAXimum NEXT on page 140 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 139 CALCulate n DELTamarker m MINimum PEAK on page 141 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 139 CALCulate lt n gt DELTamarker lt m gt MINimum NEXT on page 141 Display Configuration 7 4 Display Configuration The captured signal can be displayed using various evaluation methods All evaluation methods available for the Multi Carrier Group Delay application are displayed in the evaluation bar in SmartGrid mode when you do one of the following Select the EJ Sma
133. mote commands Selected Marker Marker name The marker which is currently selected for editing is highlighted orange Remote command Marker selected via suffix lt m gt 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 136 CALCulate lt n gt DELTamarker lt m gt STATe on page 134 Marker Position X value Defines the position x value of the marker in the diagram Remote command CALCulate lt n gt MARKer lt m gt X on page 136 CALCulate lt n gt DELTamarker lt m gt X on page 135 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 Markers 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 MARKer lt m gt STATe on page 136 CALCulate lt n gt DELTamarker lt m gt STATe on page 134 Reference Marker Defines a marker as the reference marker which is used
134. n and off 11 4 2 3 Configuring Multi Carrier Group Delay Measurements Parameters State ON OFF RST OFF Example INP EATT STAT ON Switches the electronic attenuator into the signal path Manual operation See Using Electronic Attenuation on page 32 Configuring a Preamplifier dsizmeerbcqur e 91 INPUEGAINT VALUS E EE 91 INPut GAIN STATe State This command turns the preamplifier on and off It requires the optional preamplifiier hardware Parameters State ON OFF RST OFF Example INP GAIN STAT ON Switches on 30 dB preamplification Usage SCPI confirmed Manual operation See Preamplifier on page 32 INPut GAIN VALue lt Gain gt This command selects the gain level if the preamplifier is activated INP GAIN STAT ON see INPut GAIN STATe on page 91 The command requires the additional preamplifier hardware option Parameters lt Gain gt 15 dB 30 dB The availability of gain levels depends on the model of the R amp S FSW R amp S FSW8 13 15dB and 30 dB R amp S FSW26 or higher 30 dB All other values are rounded to the nearest of these two RST OFF Example INP GAIN VAL 30 Switches on 30 dB preamplification Usage SCPI confirmed Manual operation See Preamplifier on page 32 Configuring Multi Carrier Group Delay Measurements 11 4 2 4 Scaling the Y Axis Units DISPlay WINDow n TRACe t Y SCA
135. n 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 I Q measurements the third IF represents the center frequency This trigger source is only available for RF input 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 Note Be aware that in auto sweep type mode due to a possible change in sweep types the trigger bandwidth may vary considerably for the same RBW setting Remote command TRIG SOUR IFP see TRIGger SEQuence SOURce on page 100 RF Power Trigger Source Trigger Source Defines triggering of the measurement via signals which are outside the displayed measurement range For this purpose the instrument uses a level detector at the first intermediate fre quency The input signal must be in the frequency range between 500 MHz and 8 GHz The resulting trigger level at the RF input depends on the RF attenuation and preampli fication For details on available trigger levels see the instrument s data sheet Note If the input signal contains frequencies outside of this range e g for fullspan measurements the sweep may be
136. n rta 100 TRIGger SEQuence SLOPe TRIGger SEQuence SOURce Birgit el Index A Aborting Ep 48 49 Absol te group delay ect t ntt e 21 46 AC DC coupling coi east ben Cute nere rena s eode 28 Activating MC Group Delay application remote 81 Amplitude COMIQUT ATION rd OT 30 fena 35 supere M 30 Settings remote cnet tas eie 88 Amplitude flatness See Galat aseeac dto E DE Qua Ke Ded Ue 20 Analysis so f H 53 Application Multi Carrier Group Delay eese 25 ASGIItrace eXxpoHts uc ct eoe Enero estes 151 PULGMUAON E 31 Auto Displayed Electronic Manual at Eorl D Protective remote nirisan 86 Settings remote ccrte teretes 89 Auto level HYSTETESI S cce cic a tun ido Ede de Pie DoD Reference level vai SONKEY gare e a E EES Auto settings eMe Meastime Auto Meastime Manual REMOTE Controles Sorini a Ra Average COUFTE ed eec oko inie ere VN bdo Average mode TiaCES sinarna E 55 Averaging RESUS ian E A N 21 Traces remote control moiin n 132 C Calibration 1 enc reote eee eer re rto o Date and time Error messages FUNCIONS iecore dre co Por rere Cn cep cc eR ERR Loading data Loading data remote eee 109 Measurement remote
137. n the Multi Carrier Group Delay application connect the DUT between the signal generator and the R amp S FSW On the R amp S FSW select the Display Config button to enter the SmartGrid mode and select the displays that are of interest to you up to 6 Arrange them on the display to suit your preferences then exit the SmartGrid mode Press the RUN SINGLE key to start a new measurement The group delay is calculated and the selected results are displayed To store the displayed results in a CSV file a Select the E Save icon in the toolbar b Select the Export softkey C If necessary change the decimal separator to be used for the export file d Select the Store Measurement Data softkey e Define a file name and storage location for the results file To make use of the advanced analysis functions in the displays select the Analy sis button in the Overview e Configure a trace to display the average over a series of sweeps on the Trace tab if necessary increase the Sweep Count in the Multi Carrier Con fig settings This is recommended for absolute group delay trace results e Configure markers and delta markers to determine deviations and offsets within the signal on the Marker tab Optionally export the trace data of the demodulated signal to a file a In the Traces tab of the Analysis dialog box switch to the Trace Export tab b Select Export Trace to ASCII File c Define a f
138. nector is used to input data to the R amp S FSW If no additional input options are installed only RF input is supported Parameters Source RF Radio Frequency RF INPUT connector RST RF 11 4 2 Configuring the Vertical Axis Amplitude Scaling The following commands are required to configure the amplitude and vertical axis set tings in a remote environment Amplitude Setllhigs tene R En RE E eR P RRERE RE e etu enis ders e rk R o dinerRE 88 PRU ETERNI LLL Emm 89 e Gonfiguiig e Preampliflel rn ciet einer aril veri iene 91 e Scaling tha V Axis FUnlls eet a aA Lex A REEL CENA ERR Deae e lees 92 11 4 2 1 Amplitude Settings DISPlay WINDow n TRACe t Y SCALe RLEVel eese 88 DISPlay WINDow n TRACe t Y SCALe RLEVel OFFSet eese 89 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 With a reference level offset 0 the value range of the reference level is modified by the offset 11 4 2 2 Configuring Multi Carrier Group Delay Measurements Parameters lt ReferenceLevel gt The unit is variable Range see datasheet RST 0 dBm Example DISP TRAC Y RLEV 60dBm Usage SCPI confirmed Manual operation See Reference Level on page 31 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe RLEVel OFFSet Offset This command d
139. ng the Reference Level Automatically Auto Level Automatically determines the optimal reference level for the current input data At the same time the internal attenuators and the preamplifier for analog baseband input the full scale level are adjusted so the signal to noise ratio is optimized 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 FSW You can change the measurement time for the level measurement if necessary see Changing the Automatic Measurement Time Meastime Manual on page 52 Remote command SENSe ADJust LEVel on page 109 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 107 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 107 SENSe ADJust CONFigure DURation on page 107 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 hyster
140. nimum on page 65 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 11 9 4 3 Analyzing Multi Carrier Group Delay Measurements Usage Event Positioning Delta Markers The following commands position delta markers on the trace Useful commands for positioning delta markers described elsewhere CALCulate lt n gt MARKer lt m gt X on page 136 Remote commands exclusive to positioning delta markers CAL Culate lt n gt DEL TamarkersmooMAXImUlmibE FT eroi iuro npe dette ater ai ponendi 140 CALCulate lt n gt DELTamarker lt m gt MAXiIMUM NEXT cccccecccecesceeeseseecesccceceseessseeeeseeees 140 CALOCulate n DELTamarker m MAXimum PEAK sess 140 CALCulate lt n gt DELTamarker lt m gt MAXiIMUM RIGHL ccccccesceceseeeecesceeeseseeseeeseesaneeeaes 140 CALCulate lt n gt DELTamarker lt m gt MINiIMUM LEFT 0ccccesssceceecececesceseeeseececeeeseseesanees 141 CALCulate lt n gt DELTamarker lt m gt MINiIMUM NEXT c 0ccccescccceesccecseseceeseeceasceeseeeeeeenes 141 CALOCulate n DELTamarker m MlNimum PEAK eese 141 CALCulate lt n gt DELTamarker lt m gt MINiMUM RIGHL 00cccceesccesseseceeececeesceesseeeseaaeees 141 CALCulate lt n gt DELTamarker lt m gt MAXimum LEFT This command moves a delta marker to the
141. nn menn n nnns nn nan nn tnt tnn r nne n nsn n ns nns 22 Trace Smoothilg erii eren eeeeu recor toner tote reete coswuceieceseeetuastecseedertecss 23 pi e 25 Configuration OvervIeW c ric tee iri e e tite aot Eee heir Rn RR PEE cR RR REDE ERR NER Ea 25 Input Source Settings erret NEE t ut Aene E n xou ECe cane NENE 27 Amplitude and Y Axis Scaling eeeeeeeeeeeeeseseeeeee eene enne nnne nnne 30 Frequency Settings ecce tbe neret Peine e Liens tL ES ERR Ee ses ENS PARRA RECE ENS INEN RENES 36 Trigger Settings ene tei tiieiue tetendit ne exeustcayusys TARRE SENNAT 38 Multi Carrier Configuration eeeeeeeeeeeeeeeenennenennen nennen nnn nnn nnne nnn nnns 44 EU IJORGIUnbrIeesP E 48 Output Settings oc nere n Ee te ced nett i Dee Pocta mee xa be cre ue Dia eR Ru RR ER 49 Automatic Settings ndi teni eie rise u tea Pea Enea Eie exe erii BER a TE oua 51 ILI 53 Trace un GS 53 Trace Data Export Configuration eese enne 56 R amp S9FSW K17 Contents 7 3 7 4 7 5 8 1 8 2 10 10 1 11 11 2 11 3 11 4 11 5 11 6 11 7 11 8 11 9 11 10 11 11 12 12 1 12 2 12 3 Market 58 Display Configuratlon 1er aiu aatras SANNE INNA innu a numus i nun uAR RR PRA RR ANE RR RR RR RRRR ice
142. nt setting in the Sweep and Multi carrier configuration Remote command SENSe AVERage lt n gt COUNt on page 131 Predefined Trace Settings Quick Config Commonly required trace settings have been predefined and can be applied very quickly by selecting the appropriate button Function Trace Settings Preset All Traces Trace 1 Clear Write Traces 2 4 Blank Set Trace Mode Trace 1 Max Hold Max Avg Min 7 2 Trace Data Export Configuration Function Trace Settings Trace 2 Average Trace 3 Min Hold Trace 4 Blank Set Trace Mode Trace 1 Max Hold Max GirWrite Min Trace 2 Clear Write Trace 3 Min Hold Trace 4 Blank Trace 1 Trace 2 Trace 3 Trace 4 Softkeys Displays the Traces settings and focuses the Mode list for the selected trace Remote command DISPlay WINDowcn TRACe t STATe on page 131 Trace Data Export Configuration The R amp S FSW provides various evaluation methods for the results of the performed measurements However you may want to evaluate the data with other external appli cations In this case you can export the measurement data to a standard format file ASCII or CSV The standard data management functions e g saving or loading instrument settings that are available for all R amp S FSW applications are not described here See the R amp S FSW User Manual for a description of the standard functions Tra
143. om windows move up one position Parameters lt State gt ON OFF RST OFF Manual operation See Multiple Zoom on page 66 See Restore Original Display on page 67 See X Deactivating Zoom Selection mode on page 67 11 10 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 User Manual 1173 9405 02 14 143 Commands for Compatibility To set the R amp S FSW to compatible mode for previous signal analyzers use the SYST LANG command For details see the R amp S FSW User Manual CALCUAE S FEED eeina EE E E 144 DISPlayEWINBowsn TYPE octo ceu aa aa en iiae i ed 144 SENSe JADEMod BANDwidth DEModulation eeeeseseseseseeeeeeeeneneneenen nnns 145 SENSe JADEMod BWIDth DEMOdulation c0ccececeeeeeeeeeeeeeeeeeeeee cess enne nnne 145 ISENSeJABEMod MCPHase METHFlOg dts pa duree ltr ere Enea ote exte eeu uoa 145 SENSe ADEMod MCPHase SPAQCirng ccua ee th niin eerie nein nna EEEa EEEE RAE UA 145 SENSe JADEMod MCPHase STATe eese nennen ener rene tnn nunn nitens 145 SENSe ADEMod SPECtrumiPHASeRESUIU repa ce Deus ende etae Er xen ed 146 SENSe JADEMod SPECtr m PHAS TYPE 2 21 12 2 3 an nra ananasai 146 SENSe ADEMed SPECum SPAN iiu ortae terat Re ni qr rhe eere Ent ARR N Era Eiaa 146 SENSe JADEMod SPECtru
144. ompensated intercarrier interference Increase the signal generator s output level Alternatively you can select the carrier offset mode Fixed In this case frequency estimation is disabled and the carrier offset is set to a fixed value 0 Hz for odd number of carriers and carrier spacing 2 for even number of carriers accordingly 10 1 Error and Status 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 Warnings are not indicated in the status reporting system but are displayed in the sta tus bar A short explanation of the warning messages for the R amp S FSW MCGD appli cation is given below Table 10 1 Status messages for the R amp S FSW MCGD application Status bar message Description No calibration data The calibration measurement has not yet been performed nor have stored settings been loaded Measurement configuration not MCGD configuration contains a setting that is not compatible to the compatible to Calibration Data current calibration reference data Solution Repeat the calibration measurement without the DUT or change the measurement settings 11 11 1 Introduction Remote Commands to Perform Multi Car rier Group Delay Measurements The following commands are required to perform measurements in the Multi Carrier Group Delay application in a remote environment I
145. ompression good signal to noise ratio Remote command DISPlay WINDowcn TRACe t Y SCALe RLEVel on page 88 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 FSW 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 FSW 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 89 RF Attenuation Defines the attenuation applied to the RF input of the R amp S FSW 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 electronic attenuation is not available mechanical attenuation is applied In Manual mode you
146. on page 20 Remote command SENSe FREQuency SPAN on page 105 Measurement Time Defines the duration of the measurement Auto Default In automatic mode the required time is determined accord ing to carrier spacing and span the currently used measurement time is indicated for reference only Manual The measurement time is defined manually enter the measurement time in seconds Remote command SENSe MTIMe on page 105 SENSe MTIMe AUTO on page 105 Sweep Count Defines the number of sweeps to be performed in the single sweep mode Values from 0 to 32767 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 6 6 2 Multi Carrier Configuration During calibration measurements the phase and amplitude values are averaged over the defined number of sweeps If the trace configurations Average Max Hold or Min Hold are set this value also determines the number of averaging or maximum search procedures In continuous sweep mode if sweep count 0 default averaging is performed over 10 sweeps For sweep count 71 no averaging maxhold or minhold operations are per formed Remote command SENSe SWEep COUNt on page 122 Group Delay Mode Defines how the group delay is calculated Absolute Calculates the absolute group delay requires an external trigger Relative Calculates the relative group delay constant delay parts are
147. 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 11 1 5 11 1 6 11 1 6 1 Introduction 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 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 s CUPS VSIUBS cune aree EIE ETE 79 SURTOUT 80 e Character DObg cce ee aorta 80 e Character SUG See dei eee n erede eee rated qe cet dnte teg dtd decals 81 TER E oe ADE EE cct eiecit ore Ore tpe Prover SE lieti rep ORCI suse aay A 81 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
148. ote command TRIGger SEQuence SOURce on page 100 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 100 External Trigger 1 2 3 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 41 Note The External Trigger 1 softkey automatically selects the trigger signal from the TRIGGER INPUT connector on the front panel For details see the Instrument Tour chapter in the R amp S FSW Getting Started manual External Trigger 1 Trigger signal from the TRIGGER 1 INPUT connector External Trigger 2 Trigger signal from the TRIGGER 2 INPUT OUTPUT connector Note Connector must be configured for Input in the Outputs con figuration see Trigger 2 3 on page 42 External Trigger 3 Trigger signal from the TRIGGER 3 INPUT OUTPUT connector on the rear panel Note Connector must be configured for Input in the Outputs con figuration see Trigger 2 3 on page 42 Remote command TRIG SOUR EXT TRIG SOUR EXT2 TRIG SOUR EXT3 See TRIGger SEQuence SOURce on page 100 Trigger Settings IF Power Trigger Source Trigger Source The R amp S FSW starts capturing data as soo
149. p S9FSW K17 MultiView Spectrum Ref Level Br Att Freq 1 1 Magnitude 2 CF 1 0 Git 3 Group Delay Meas Time Span i Mee Rel Cal Freq 1 Welcome to the Multi Carrier Group Delay Application SESS GroupDelay Last Ref Cal Group Delay At 3 2 Phase 4 lor sac 1 Git 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 depending on evaluation 6 Instrument status bar with error messages progress bar and date time display Channel bar information In the Multi Carrier Group Delay application the R amp S FSW shows the following set tings Table 2 1 Information displayed in the channel bar in the Multi Carrier Group Delay application Ref Level Reference level Att Mechanical and electronic RF attenuation Offset Reference level offset Freq Center frequency for the RF signal Meas Time Measurement time Span Measurement bandwidth Last Ref Cal Timestamp of most recently performed reference calibration if it has already been performed Ref Cal Freq Frequency used for reference calibration Group Delay Mode of group delay result display absolute or relative Carrier Offset Offset of the carrier from the center frequency In addition the channel bar also displays information on instrument settings that affect the measure
150. pinea aaidaki 116 LAY out WINDOWESRSREMQONG tiit root teri reti d entgegen tds 116 LAYOutAWINDOWSn2 RE PLA CEs ceris aniei autos i Eon ye crea rer ve Evo ak au p a edd eve edu e 117 Configuring the Result Display LAYout ADD WINDow WindowName Direction WindowType 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 existing window use the LAYout 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 Manual operation See Magnitude on page 15 See Phase on page 16 See Magnitude Refer
151. r port DIReCIOR 2 one rrr err rentrer ntn thor er Re Er ee oar rr rares 101 eU PUEMRIGGErS PON WEY d S 102 OUTPut TRIGgersport OTYPBe artt ren eer eren ntn ree een erp terr den rats 102 OUTPut TRIGger port PULSe IMMediate netten teneret teen rere tr ee r 103 OU TPut TRSIGgersport PULSSEBENGIDL unire npa era prega gere ONTE NE Ek a FOX A EEEN 103 SYSTem PRESSECEANnel EEXEQCUlte 232 tret rra eterne n tote ne ette e V tb dg 85 b STEM SEQUEMCEM m O 121 TAG EIE cC 126 TRAGeshns DATA nie cte t venere te prece sr dp b Seared 126 TRIGger SEQuence D l IM ierit irt rre erre re E Feier bra erae c rra eter ATE aT 97 TRIGE SEQUENCE HOLBORN TIME encor nE E A aE ETE EEPE tenn Avo YS Pd ce Y Cox eR pee 98 TRIGger SEQuerice IFPower HOLDBolF uinina rtt te tpe treten eren nen 98 TRIGger SEQuence IFPower HYS Teresis rrr tr ener ri rte rrt rr ee Ex a 98 TRiIGgerl SEQuence HEV CLEP e 99 TRIGger SEQuerice EEVelIOPOWet irre rtr eet ner eee rtr rne entren 99 TRIGger SEQuence LEVE REPOWer rrt rtr ern mr eer in trt rr enc iR rh Eod 100 TRIGger SEQuerice HEVellEXTeralsports canentes nube pego ea eo ern ret gerne eye TONE 99 TRIGger SEQuence RFPowet HOL OTt ottenere tern rr een r
152. r 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 port PULSe IMMediate on page 103 Multi Carrier Configuration 6 6 Multi Carrier Configuration 6 6 1 The multiple carriers are configured in the Multi Carrier Config dialog box To display this dialog box do one of the following e Select the Multi Carrier Config button in the Overview Select the MEAS CONFIG key and then the Multi Carrier Config softkey e Measurement COmfIgukatlgn cest ssid oce iere eet eels Ee ditte dai ade 44 AE lorum 46 Measurement Configuration The measurement parameters for group delay calculation are configured in the Meas Config tab of the Multi Carrier Config dialog box u Meas Config Calibration Multi Carrier Signal Description Center Frequency 13 25 GHz Number Carrier Spacing of Carriers Span aoee Ca o Measurement Time Value FE Sweep Count Group Delay Absolute Relative E Carrier Estimation Estimation Type Gffset COME MEQGUCNCY P 45 Gamer SPACING
153. r port 2 TRIGGER INPUT OUTPUT connector on front panel 3 trigger port 3 TRIGGER3 INPUT OUTPUT connector on rear panel Parameters lt TriggerLevel gt Range 0 5V to 3 5 V RST 1 4 V Example TRIG LEV 2V Manual operation See Trigger Level on page 41 TRIGger SEQuence LEVel IFPower lt TriggerLevel gt This command defines the power level at the third intermediate frequency that must be exceeded to cause a trigger event Note that any RF attenuation or preamplification is considered when the trigger level is analyzed If defined a reference level offset is also considered Parameters lt TriggerLevel gt For details on available trigger levels and trigger bandwidths see the data sheet RST 10 dBm Example TRIG LEV IFP 30DBM Manual operation See Trigger Level on page 41 TRIGger SEQuence LEVel IQPower lt TriggerLevel gt This command defines the magnitude the I Q data must exceed to cause a trigger event Note that any RF attenuation or preamplification is considered when the trigger level is analyzed Parameters lt TriggerLevel gt Range 130 dBm to 30 dBm RST 20 dBm Example TRIG LEV IQP 30DBM Manual operation See Trigger Level on page 41 Configuring Multi Carrier Group Delay Measurements TRIGger SEQuence LEVel RFPower lt TriggerLevel gt This command defines the power level the RF input must exceed to cause a trigger event Note that any RF attenuation or preamp
154. race 2 cet eee ettet 61 Meastime Auto sssrini hrtana nenatis 45 52 Meastime Manual Mini eros Multi Carrier Config Next Min wits Next Peak iuret ente ie cb eer eerie tes Norin Delta 2 5 etri tea Es t edad Outputs Config t Peak atit ueris fore denotes A e CU C succ rc Ref Level Ref Level Offset RF Atten Auto RF Atten Manual RF Power HN Scale COHflg 2 rrt trn ttr e ter natns Search CONG eissioes taises intieru enaner naga Select Marker Single Sweep Sweep count Trace 1 2 3 4 Trace Config wut Trigger Cohflg terere metn t Tfigg r Offset trenes Upper Level Hysteresis esesseesesses 52 re amp 45 Definition LU Displayed c rent rene eta er e 11 Specifics for Config latiOt sroin t rrt eerte nns 27 Status registers STAT QUES POW 3 cicer eei gestes 86 Step size Markers remote control sess 137 Storing Calibratiord t 2 tede 47 68 Measurement results retener tn 68 Suffixes COMMON e 81 Remote comrmands sssrinin siii 78 Sweep ADON O esM m 48 49 Count s Performing remote eret tees 117 Settings rtt tert tette ten 48 Settings remote cenae ce aes 117 T Trace SMON occi e decido ence ceti ete voneedes 23 Traces Aligning carrier frequencies
155. range to be displayed per division Since the display consists of 10 divisions by default the displayed range is Range 10 lt Range per Division gt Note If fewer divisions are displayed e g because the window is reduced in height the range per division is increased in order to display the same result range in the smaller window In this case the range per division does not correspond to the actual display Remote command DISPlay WINDow lt n gt TRACe lt t gt Y SCALe PDIVision on page 93 6 3 3 6 4 Frequency Settings Defining Min and Max Values Defines the displayed range using minimum and maximum values Remote command DISPlay WINDow lt n gt TRACe lt t gt Y SCALe MINimum on page 92 DISPlay WINDow lt n gt TRACe lt t gt Y SCALe MAXimum on page 92 Scale Mode For Gain display only Defines the scaling method for the y axis Logarithmic Logarithmic scaling only available for logarithmic units dB Linear Linear scaling in percentages from 0 to 100 Remote command DISPlay WINDow lt n gt TRACe lt t gt Y SCALe MODE on page 93 Units The units define how the demodulated data is displayed They are configured in the Units tab of the Amplitude dialog box gt To display this dialog box do one of the following e Selectthe Amplitude button in the Analog Demodulation Overview and select the Units tab e Select the MEAS CONFIG key and then the Unit Config
156. rdless 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 SYSTem SEQuencer State This command turns the Sequencer on and off The Sequencer must be active before any other Sequencer commands INIT SEQ are executed otherwise an error will occur A detailed programming example is provided in the Operating Modes chapter in the R amp S FSW User Manual Configuring and Performing Sweeps Parameters State ON OFF0 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 I
157. rements INPut ATTenuation AUTO State This command couples or decouples the attenuation to the reference level Thus when the reference level is changed the R amp S FSW determines the signal level for optimal internal data processing and sets the required attenuation accordingly Parameters State ON OFF 0 1 RST 1 Example INP ATT AUTO ON Couples the attenuation to the reference level Usage SCPI confirmed Manual operation See Attenuation Mode Value on page 31 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 90 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 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 32 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 Parameters State ON OFF 0 1 RST 1 Example INP EATT AUTO OFF Manual operation See Using Electronic Attenuation on page 32 INPut EATT STATe lt State gt This command turns the electronic attenuator o
158. requency step size to the span or the resolution bandwidth Parameters lt CouplingType gt SPAN Couples the step size to the span Available for measurements in the frequency domain OFF Decouples the step size RST SPAN Example FREQ CENT STEP LINK SPAN SENSe FREQuency CENTer STEP LINK FACTor lt Factor gt This command defines a step size factor if the center frequency step size is coupled to the span Parameters lt Factor gt 1 to 100 PCT RST 10 11 4 4 11 4 4 1 Configuring Multi Carrier Group Delay Measurements Example FREQ CENT STEP LINK FACT 20PCT SENSe FREQuency OFFSet Offset This command defines a frequency offset If this value is not 0 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 See also Frequency Offset on page 38 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 38 Triggering Measurements Useful commands for triggering described elsewhere SENSe FREQuency CENTer on page 95 Remote commands exclusive to triggering e Configuring the Triggering Conditions ecce en 97 e Configuring the Trigger Output nennen 101 Configuring
159. rns 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 62 CALCulate lt n gt MARKer lt m gt LINK State This command sets whether all markers will be linked across all display windows or queries the current setting Parameters lt State gt Manual operation See Linked Markers on page 62 Searching for Peaks and Positioning the Marker The following remote commands are required to search for peaks and position the marker on a trace e Searching for Peaks eres iret tenere teda pets Ms quc LE eee LR RR arua ce RAE EN ge 137 e Foshonng MIKO aient i n tee tr a ANEA RR Rats 138 e Positioning Delta Markers ssssssssssseseesee a aaia 140 Searching for Peaks CALCulate lt n gt MARKer lt m gt PEXCursion lt Excursion gt This command defines the peak excursion for all markers in all windows lt m gt lt n gt are irrelevant Analyzing Multi Carrier Group Delay Measurements The peak excursion sets the requirements for a peak to be detected during a peak search The unit depends on the measurement Application Result display Unit Spectrum dB MCGD dBm DEG RAD S MS US NS PS SC Parameters Excursion
160. rrent peak Right Determines the next maximum minimum to the right of the current peak Remote command chapter 11 9 4 Searching for Peaks and Positioning the Marker on page 137 Peak Excursion Defines the minimum level value by which a signal must rise or fall so that it will be identified as a maximum or a minimum by the search functions Remote command CALCulate lt n gt MARKer lt m gt PEXCursion on page 137 Positioning Functions The following functions set the currently selected marker to the result of a peak search or set other characteristic values to the current marker value These functions are available as softkeys in the Marker To menu which is displayed when you press the MKR gt key or in the Marker menu Select Matket ite re ii e e iie EC vet dee e eid eret vrbe A D eve Coi vare 64 Peak Sese isse edit ectro cene dese ennai TD ere erp vw pen cYA EN ES aqua odes exe Eder nd pr EEIE Deed 65 Searchext PEAR oea aa ed ravt et etis Cas en a et end ete e E c RE a Exe erra 65 Searc AMININ so ore deer eco ee e t e ree eria ten eo il te excu Lue at 65 Search Next MIDIIOUITE iiie c Ero P secre vore a ae tee E Yee r EE eve ee e Pr eC LEE EE Eve a ae fo Eae a Fu a 65 Select Marker The Select Marker function opens a dialog box to select and activate or deactivate one or more markers quickly Markers Selected State Selected State Selected State Remote command Marker selected via suffix lt m gt in re
161. rtGrid icon from the toolbar e Select the Display Config button in the Overview e Press the MEAS key Select the Display Config softkey in any Multi Carrier Group Delay menu Up to 6 evaluation methods can be displayed simultaneously in separate windows The Multi Carrier Group Delay evaluation methods are described in chapter 4 1 Evalua tion Methods for Multi Carrier Group Delay on page 15 o For details on working with the SmartGrid see the R amp S FSW Getting Started manual 7 5 Zoom Functions The zoom functions are only available from the toolbar Sie Pzs E LE M 66 MUNDO LOOM 2 unice tdeo osx eran t herr emer hr ere er ait E one remem 66 Restore Original Display 0 cc cccccccececeeceseeeececaeeeeeneeseceeeeceaaeeegeneeeeaaeseeeneeeseeeseeseeeees 67 R Deactivating Zoom Selection mode entente 67 Single Zoom R 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 142 DISPlay WINDow lt n gt ZOOM AREA on page 141 Multiple Zoom Zoom Functions 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 tha
162. s usssss 60 Fixed reference remote control 137 Linked iecit het 25 02 Linking 51 01 MIDI eis cot corni er eee ner erre extre nene 65 Minimum remote control seseeeee 137 Next minimum 65 Next minimum remote control 137 Next peak rece a165 Next peak remote control 137 c e 65 Peak remote control 2 te 137 POSITION crcr eai apria rina 60 Positioning n 64 Positioning remote control 132 Positioning Femote itier cr ere e 138 Querying position remote sssssssss 124 Retrieving results remote 123 SUAS 60 Step size remote control sssssss 137 Table 4t ren rre recentes 62 Table evaluation method sesssess 18 Table remote control in VOT Type cerent mer 60 PONTI 60 Maximizing Windows remote ecce nie itae de 111 MC Group Delay Absolute uk Application am Measurement method 5 nettes 13 MCGD Multi Carrier Group Delay Application 9 Cohilfigurilit oer ooh ert nta reete 2 25 Display es 10 Programming example 148 Settings ee 44 ini M M 9 Measurement Method 3c e dtd e tds 13 Method orthogonal 21 Proced
163. s Example LAY 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 111 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 FSW K17 Remote Commands to Perform Multi Carrier Group Delay Measurements y 100 x 100 y 100 1 01 GHz 102 12 dim x 0 y 0 x 100 Fig 11 1 SmartGrid coordinates for remote control of the splitters Parameters lt Index1 gt The index of one window the splitter controls Index2 The index of a window on the other side of the splitter Position 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 11 1 The direction in which the splitter is moved depends on th
164. s 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 For the R amp S FSW85 the mechanical attenuation can be varied only in 10 dB steps 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 90 INPut EATT AUTO on page 90 INPut EATT on page 90 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 Input Source Settings on page 27 Preamplifier Input Settings If the optional Preamplifier hardware is installed a preamplifier can be activated for the RF input signal You can use a preamplifier to analyze signals from DUTs with low input power For R amp S FSW 26 or higher models the input signal is amplified by 30 dB if the pream plifier is activated For R amp S FSW 8 or 13 models the following settings are available Amplitude and Y Axis Scaling Off Deactivates the preamplifier 15 dB The RF input signal is amplified by about 15 dB 30 dB The RF input signal is amplified by a
165. s are per formed Remote command SENSe SWEep COUNt on page 122 6 8 Output Settings The R amp S FSW can provide output to special connectors for other devices For details on connectors refer to the R amp S FSW 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 FSW User Manual Output settings can be configured via the INPUT OUTPUT key or in the Outputs dia log box Output Settings IF Video Output IF Wide Out Frequency Noise Source Trigger 2 Trigger 3 Noise SOUFGB eerte toD REIN NONI RE RR NENNEN XR ODER INE A 50 TUG GOR EE 50 X 15 1 MES RI I e E AE Ea 51 uror 51 L Pulse Veg NEL 51 M oic ENNIO 51 Noise Source Switches the supply voltage for an external noise source on or off External noise sources are useful when you are measuring power levels that fall below the noise floor of the R amp S FSW itself for example when measuring the noise level of a DUT Remote command DIAGnostic SERVice NSOurce on page 106 Trigger 2 3 Defines the usage of the variable TRIGGER INPUT OUTPUT connectors where Trigger 2 TRIGGER INPUT OUTPUT connector on the front panel Trigger 3 TRIGGER 3 INPUT OUTPUT 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 FSW User Manual Input The signal at t
166. s measured by the R amp S FSW can be evaluated using various different methods In the Multi Carrier Group Delay application up to 6 evaluation methods can be displayed simultaneously in separate windows All results are determined from the I Q data set captured for the measurement Storing Results The results of the Multi Carrier Group Delay measurement can be stored to a file either in CSV or ASCII format The results of the calibration reference measurement can also be stored in CSV format e Evaluation Methods for Multi Carrier Group Delay sseseeeeeeee 15 4 1 Evaluation Methods for Multi Carrier Group Delay The following evaluation methods can be selected for Multi Carrier Group Delay mea surements Magnit eos EE 15 Il P 16 Magnitude Feferen e en eer con ene te in wen Fir rede boe aati 16 Phase IRefereiToe re t eee XN R 2 eER RBRUM RERERNDR EAS SRERE RR SEFRERI e EAA YR ONES SUR EERRKE 17 je sony A 17 er mE 18 Empleo C MP 18 Magnitude Displays the spectrum of the input signal In contrast to the Spectrum application the frequency values are determined using an Discrete frequency transformation DFT from the recorded 1 Q data set R amp S FSW K17 Measurements and Result Display 1 Magnitude 1 Clrw CF 1 0 GHz Span 1 0 MHz Remote command LAY ADD 1 RIGH MAGN se
167. signals consisting of multiple frequency components will suffer distortion because these components are not delayed by the same amount of time at the output of the device This changes the shape of the signal in addition to any constant delay which can result in a signal that no longer matches the receiver filter which in turn results in degraded Signal to Noise Ratio SNR or Bit Error Rate BER Group delay as a characterization of transmission components The delay of all frequencies together is referred to as the group delay and can be used to characterize the quality of transmission for such components Group delay is also a measure of how long it takes for a signal s information to propagate through a channel or device under test Since digital modulation schemes in which the frequency plays an important role are very common the group delay is of special interest to all manufacturers or testers of transmission components as well as frequency converters Satellite transponders for example need to be characterized by the phase transmission in addition to the ampli tude transmission Both values can be determined precisely and easily with the R amp S FSW Multi Carrier Group Delay application The Multi Carrier Group Delay measurement method The R amp S FSW Multi Carrier Group Delay application evaluates an input signal provi ded by a signal generator After a preliminary reference measurement of this signal without the device under te
168. st the same signal is evaluated with the device subse quently Instead of evaluating the timing of the signals the phase shift and magnitude response of multiple carriers across frequency is measured A baseband signal con sisting of several unmodulated carriers with a fixed step size is used as an input signal allowing for a very quick wideband measurement By measuring the phase differences between the two signals at the input and at the output the application calculates the relative phase between output and input However the phase of the carriers at the input to the DUT does not actually have to be measured Instead the results are normalized That way no reference path or connec tion is needed between the input and the output of the DUT A reference mixer in the signal generator provides a phase reference at the IF frequency Thus a constant delay factor is eliminated and the group delay is calculated relative to the reference signal If an external trigger is used the absolute group delay can also be calculated Absolute group delay is of interest for instance to equalize the delay of two channels character ize cables and design quadrature FM demodulators User Manual 1173 9405 02 14 13 NOfCarr Af fo Mag Response MC Baseband DUT Grp Delay Generator Fig 3 1 Multi Carrier Group Delay Measurement Setup Evaluation Methods for Multi Carrier Group Delay 4 Measurements and Result Display The data that wa
169. st CONFigure HYS Tleresis UPBber err tete en tn ner ree enean 108 SENSe ADJust LEVel SENSe JAVERage lt n gt COUNt SENSe AVER ag6sti TYPE rtr eta ct t e e ete goce eee de tpa dee Aneta 132 SENSe JAVERagesti pSTAT6ests iini reo EE teret reiner re tbe co EE Eno e DE Eon s 132 SENSE SP IB Io ae PI io fos 104 SENSe IBWIDITEDEMOQ irte t tre nete tte re eee A de ta deve cnt Bn 104 SENSE I CARRIS COUNE 1 e Donee e icr ec c D ER eng Eee E HAEC Erbe freie US SENSe CARRier OFFSet MODE SENSe CARRIer OEFSGft cett eee n tpe ce vp nece D D ege en Ends 105 SENSe CARRIer SPAGirig iri i der e n cre oo Ded rr ev DRE Eee e c dye HR Ee E Pee EX eas SENSE FREQUENCY eia ap SENSe FREQuUency CENTS STEP aoi etta ct c n e EP C p Ec da d VE Le e ER ou SENSe FREQu ncy CENT STEP AUTO con eri coe c rr rere rbd rete e ideals SENSe 3FREQu amp ncy GENTer STEP EINK oco into uero ren ERE POE EEEE ARENAN SENSe FREQuency CENTer STEP LINK FACTor SENSE FREQUENCY OFF Seti wis ria int Biche ants a eed o fue d i edv ug e chart an beta SENSE J FREQUENCY SRAN T SENSe IMTIMe AUTO cct tret ect dtp eet ec S tud ted eve tp chara SENSe MTIMe SENSE nib eis eji S 106 SENSe SRATG i craint niece eter cae nre ped o e ea tae to
170. surements Parameters Source IMMediate Free Run EXTernal Trigger signal from the TRIGGER INPUT connector EXT2 Trigger signal from the TRIGGER INPUT OUTPUT connector Note Connector must be configured for Input EXT3 Trigger signal from the TRIGGER 3 INPUT OUTPUT connector Note Connector must be configured for Input RFPower First intermediate frequency IFPower Second intermediate frequency IQPower Magnitude of sampled I Q data For applications that process I Q data such as the I Q Analyzer or optional applications RST IMMediate Example TRIG SOUR EXT Selects the external trigger input as source of the trigger signal Manual operation See Trigger Source on page 40 See Free Run on page 40 See External Trigger 1 2 3 on page 40 See IF Power on page 41 See RF Power on page 41 See I Q Power on page 41 11 4 4 2 Configuring the Trigger Output The following commands are required to send the trigger signal to one of the variable TRIGGER INPUT OUTPUT connectors on the R amp S FSW OUT Putz tRIGSersporn DI RBGIIQOEI eI Ere eta reta bee ttl aaa 101 OUTPut TRIGger port L E Vel ioi eoo a I entere eie ev vau 102 OUTPut TRIGGersport s OTYPQu reor rte ete E Roe ue suero rex cer edo AEEA 102 OUTPut TRIGSereport PULSe MNMIedialte 2 22 22 dates Piae ter er pret eredi det hri rhet 103 OUTPut TRIGger port s PULSS LENG isi iisi disis di depart vue days aura terna eve 103 OUTPut TRIGger lt por
171. system returns either the value 1 ON or the value 0 OFF Example Setting DISPlay WINDow ZOOM STATe ON Query DISPlay WINDow 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 11 1 2 Long and Short Form on page 78 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 11 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 11 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
172. t is irrelevant In case of continuous sweep mode the application calculates the moving average over the average count In case of single sweep mode the application stops the measurement and calculates the average after the average count has been reached Analyzing Multi Carrier Group Delay Measurements Parameters lt AverageCount gt If you set an average count of 0 or 1 the application performs one single sweep in single sweep mode In continuous sweep mode if the average count is set to 0 a moving average over 10 sweeps is performed Range 0 to 32767 RST 0 Usage SCPI confirmed Manual operation See Average Count on page 55 SENSe JAVERage lt n gt STATe lt t gt State This command turns averaging for a particular trace in a particular window on and off Parameters lt State gt ON OFF Usage SCPI confirmed SENSe AVERage lt n gt TYPE Mode This command selects the trace averaging mode Parameters lt Mode gt viDeo The logarithmic power values are averaged LiNear The power values are averaged before they are converted to logarithmic values POWer The power level values are converted into unit Watt prior to averaging After the averaging the data is converted back into its original unit RST ViDeo Example AVER TYPE LIN Switches to linear average calculation Usage SCPI confirmed Manual operation See Average Mode on page 55 11 9 2 Setting Up Individual Mark
173. t and the start of the sweep Parameters ONSE RST 0s Example TRIG HOLD 500us Manual operation See Trigger Offset on page 42 TRIGger SEQuence 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 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 42 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 3 dB 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 42 Configuring Multi Carrier Group Delay Measurements 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 Note that the variable INPUT OUTPUT connectors ports 2 3 must be set for use as input using the OUTPut TRIGger lt port gt DIRection command Suffix lt port gt Selects the trigger port 1 trigger port 1 TRIGGER INPUT connector on front panel 2 7 trigge
174. t can be manually set to a fixed value Trigger Settings X Span Sets the step size for the center frequency to a defined factor of the span The X Factor defines the percentage of the span Values between 1 and 100 96 in steps of 1 96 are allowed The default setting is 10 96 This setting is only available for MCWN measurements Center Sets the step size to the value of the center frequency The used value is indicated in the Value field Marker This setting is only available if a marker is active Sets the step size to the value of the current marker and removes the coupling of the step size to span The used value is indicated in the Value field 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 95 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 exampl
175. t corre sponds to the individual zoom display is indicated in the lower right corner between the scrollbars Remote command DISPlay WINDowcn 200M MULTiple zoom STATe on page 143 DISPlay WINDowcn Z0OOM MULTiple czoom AREA on page 142 Restore Original Display Restores the original display and closes all zoom windows Remote command DISPlay WINDow lt n gt ZOOM STATe on page 142 single zoom DISPlay WINDow lt n gt ZOOM MULTiple lt zoom gt STATe on page 143 for each multiple zoom window X Deactivating Zoom Selection mode Deactivates any zoom mode Tapping the screen no longer invokes a zoom but selects an object Remote command DISPlay WINDow lt n gt Z00M STATe on page 142 single zoom DISPlay WINDow lt n gt Z00OM MULTiple lt zoom gt STATe on page 143 for each multiple zoom window Export Functions 8 Importing and Exporting Results The R amp S FSW provides various evaluation methods for the results of the performed measurements However you may want to evaluate the data with other external appli cations In this case you can export the measurement data to a standard format file ASCII or CSV The results from the calibration measurements can also be be re imported to the R amp S FSW MCGD application as reference data for further measure ments The standard data management functions e g saving or loading instrument settings that are available for all R amp S FSW app
176. t gt DIRection Direction This command selects the trigger direction for trigger ports that serve as an input as well as an output Configuring Multi Carrier Group Delay Measurements Suffix port Selects the used trigger port 2 trigger port 2 front panel 3 trigger port 3 rear panel Parameters Direction INPut Port works as an input OUTPut Port works as an output RST INPut Manual operation See Trigger 2 3 on page 42 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 TRIGger lt port gt sOTYPe Suffix lt port gt Selects the trigger port to which the output is sent 2 trigger port 2 front 3 trigger port 3 rear Parameters lt Level gt HIGH TTL signal LOW OV RST LOW Manual operation See Trigger 2 3 on page 42 See Level on page 43 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 trigger port 2 front 3 trigger port 3 rear 11 4 5 Configuring Multi Carrier Group Delay Measurements Parameters lt OutputType gt DEVice Sends a trigger signal when the R amp S FSW has triggered inter nally TARMed Sends a trigger signa
177. t is assumed that the R amp S FSW has already been set up for remote operation in a network as described in the R amp S FSW User 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 FSW User Manual In particular this includes e Managing Settings and Results i e storing and loading settings and result data e 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 Multi Carrier Group Delay application are described here LEM geo vcl arenga Ea AA A N Si 76 Common SUMKES onara a AE a aA AA aa EE A AAAS 81 e Activating Multi Carrier Group Delay Measurements sssssssssssss 81 e Configuring Multi Carrier Group Delay Measurements sess 85 e Measuring Loading and Storing Calibration Data sss 109 e Configuring the Result Display esses nennen 110 e Configuring arid Performing SWEEPS cte rte erret nna e RR nto eo kenn 117 e Relieving Results cicer ee a see rd ed ER t ea 123 e Analyzing Multi Carrier Group Delay Measurements sess 128 e Commands for Compatibility cesses 143 e Programming Example Measuring Multi Carrier Group Dela
178. t 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 Parameters Position Numeric value that defines the marker position on the x axis The unit is s Example CALC DELT X Outputs the absolute x value of delta marker 1 Manual operation See Marker Position X value on page 60 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 61 CALCulate lt n gt MARKer lt m gt LINK TO MARKer lt m gt lt State gt This command links normal marker lt m1 gt to any active normal marker lt m2 gt If you change the horizontal position of marker lt m2 gt marker lt m1 gt changes its hori zontal position to the same value Parameters lt State gt ON OFF RST OFF Example CALC MARK4 LINK TO MARK2 ON Links marker 4 to marker 2 Manual operation See Linking to Another Marker on page 61 Analyzing Multi Carrier Group Delay Measurements CALCulate 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 S
179. t tnr ettet 49 Configuration remote 106 NoiSe SOUNCE e 50 SEWING S 2 eene nere iair oe addant 49 Bee E E 42 50 Overload RF input remota iisisti 86 Overview COMIQUIATION 2 c rrr ttti eere 25 P Peak exCUISIOR 1 neret oerte i 64 n i o Et 137 Peak list Peak excl SIODl cicer ere rr rires 64 Peak search KEY Ges 65 MOJE tice ned attese otc tae oe 63 Peaks Marker positioning rrt 65 NOK lesen po dic ies eet E eate Med 65 enc S 65 Performing Multi Carrier Group Delay measurement 71 Phase DUI e 36 Phase vs Frequency Evaluation method zeci ri aiii 16 17 Preamplifier SOWING M 32 Settings remote meets 91 ecl 32 Presetting Channels b et attenti tto tuendo 27 PHEUIQGER e 42 Programming examples ec 148 Protection RF input remota 4 2 ate etes 86 Q Quick Config Jia Ges terea bre alid tis meinen 55 R RANGE iia ea pee ieci nre bu fex do pita ea es 34 Range per division col 35 Feterence level nce eidem terat ipid ANE 31 A tol vel 52 Bisplayed isis s ern erc de santet dea 11 Offset eee Offset displayed Position aces I ec MalUg isi me ee cute Deve ees Reference marker 25 2 eicere esee rds Reference measurement see Calibratiori
180. te command CALCulate lt n gt MARKer lt m gt TRACe on page 136 All Markers Off Deactivates all markers in one step Remote command CALCulate lt n gt MARKer lt m gt AOFF on page 135 Markers 7 3 1 2 General Marker Settings Some general marker settings allow you to influence the marker behavior for all mark ers These settings are located in the Marker Settings 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 nthe Overview select Analysis and switch to the vertical Marker tab Then select the horizontal Marker Settings tab LIENMZL 28 Cnanbses GraunNalau _ Traces Markers Marker Settings Search Config Marker Marker Table Con J or MINE suman f1 Magnitude Marker Table DISplay 1 3 priino rri eiecit pate tent aacra te Ie epe dot eie 62 Linked MAROS us cnra decide Erbe enc egeo edd th ter recep tU dE rad 62 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 MTAB1e on page 137 Linked Markers If enabled the markers in all diagrams are linked
181. ter has no effect For signals with a frequency of approximately 4 GHz upwards the harmonics are suppressed sufficiently by the YIG filter Parameters lt State gt ON OFF RST OFF Example INP FILT HPAS ON Turns on the filter Usage SCPI confirmed Manual operation See High Pass Filter 1 3 GHz on page 29 INPut FILTer YIG STATe State This command turns the YIG preselector on and off Note the special conditions and restrictions for the YIG filter described in YIG Prese lector on page 29 Parameters State ON OFF 0 1 RST 1 0 for I 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 29 INPut IMPedance Impedance This command selects the nominal input impedance of the RF input In some applica tions only 50 O are supported Configuring Multi Carrier Group Delay Measurements 75 Q should be selected if the 50 Q input impedance is transformed to a higher impe dance using a matching pad of the RAZ type 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 50175 RST 500 Example INP IMP 75 Usage SCPI confirmed Manual operation See Impedance on page 28 INPut SELect Source This command selects the signal source for measurements i e it defines which con
182. th In order to use the maximum bandwidth for signal analysis you can deactivate the YIG preselector at the input of the R amp S FSW 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 Note For the following measurements the YIG Preselector is off by default if available e Q Analyzer and thus in all applications in MSRA operating mode e Multi Carrier Group Delay e GSM e VSA Remote command INPut FILTer YIG STATe on page 87 Amplitude and Y Axis Scaling 6 3 Amplitude and Y Axis Scaling 6 3 1 The amplitude and y axis scaling are configured in the Amplitude dialog box Ampli tude settings are identical to the base unit For background information on amplitude settings see the R amp S FSW User Manual gt To display this dialog box do one of the following e Select the Amplitude button in the Overview e Select the AMPT key and then the Amplitude Config softkey Amplitude Setlilie nier rio ed Erie t rere deere 30 VGN MDG UNV 2v 33 Bj rasan m 36 Amplitude Settings Amplitude settings determine how the R amp S FSW must process or display the expected input power levels To configure the amplitude settings Amplitude settings can be configured via the AMPT key or in the Amplitude dialog box gt To display the
183. the Triggering Conditions TRIiGger SEQuence DTIME ccececeeeeceeeeeeeeeeeeeeeeeeeeeaeaeaeaaaaaaaeaaaaaeceeeeeseeeeeeeeeeeeeeeaeeeeaea 97 TRiGger SEQuence HOLDOM TIME 1t rtt ute aac ttt tl oret eet caes 98 TRIGger SEQuence IFPower HOLBBDofr 5 2 2 22 22 retro eeo t tree va ne c hue v aa ccce cpu bacicie 98 TRiGger SEQuence IFPOwerHY S Fl eresls irte itte RE Ree nter ETETEA 98 TRIGger SEQuenceJ LEVel EXTernal port ccs nennen 99 TisIGSeroEQuencel EEVelll POE chs cc oreet ds aiaia san anA a aate aaa pee aea conica 99 TRiGger SEQuence MEV ClIIQR OWI ag cu uic o EE e o Ent Ee na RE ne Rex Enea e cR SERT YR ERE RDRRER RN 99 TRiGger SEQuence LEVel RFPOWEDM cecececeeeeeeeeeeeeeeeaeaeaeaaeae aaa nennen enne nnns nnns 100 TRIGger SEQuencel RF Power HOLDON 1 rot teen ter hr trc aa ais 100 TRiIGger SEQuenece SLOPBe 3 riri teet Lecce rl isthe uo Ce RV EL 2 HENRY ARA Oa SERATRAPRAEUE 100 TAIGgel SEQuence SOUR CG eas E 100 TRIGger SEQuence DTIMe lt DropoutTime gt Defines the time the input signal must stay below the trigger level before a trigger is detected again Configuring Multi Carrier Group Delay Measurements Parameters lt DropoutTime gt Dropout time of the trigger Range O sto 10 0s RST 0s Manual operation See Drop Out Time on page 42 TRIGger SEQuence HOLDoff TIME Offset Defines the time offset between the trigger even
184. this command is maintained for compatibility reasons only Use SENSe SRATe on page 106 for new remote control programs Return values lt SampleRate gt Usage Query only SENSe ADEMod STATe State This command switches to the Analog Demodulation application or disables it Note that this command is maintained for compatibility reasons only Use the INST SEL ADEM command for new remote control programs Parameters lt State gt Programming Example Measuring Multi Carrier Group Delay This example demonstrates how to perform a multi carrier group delay measurement in a remote environment It assumes a multi carrier signal is being input for example by a connected signal generator furthermore it assumes an external trigger and an external reference frequency are being provided by a connected signal generator The commands to set up the signal generator are not provided in this example csesEBESERE Preparing the measurement Reset the instrument Programming Example Measuring Multi Carrier Group Delay RST Configure the use of an external reference frequency at 10 MHz SENS ROSC SOUR EXT SOUR EXT ROSC EXT FREQ 10MHZ Activate the MCGD measurement application INST SEL MCGD f BesEREREEEEE Configuring the measurement Configure the use of an external trigger at 1 5V TRIG SOUR EXT TRIG LEV EXT 1 5V Set the center frequency to 100 MHz FREQ CENT 100MHZ Set
185. to determine relative analysis results delta marker values If the reference marker is deactivated the delta marker referring to it is also deactiva ted If the reference marker is deactivated a different reference marker is automatically selected the delta marker remains active Remote command CALCulate lt n gt DELTamarker lt m gt MREF on page 134 Linking to Another Marker Links the current marker to the marker selected from the list of active markers If the x axis value of the inital marker is changed the linked marker follows on the same x position Linking is off by default Using this function you can set two markers on different traces to measure the differ ence e g between a max hold trace and a min hold trace or between a measurement and a reference trace Remote command CALCulate lt n gt MARKer lt m gt LINK TO MARKer lt m gt on page 135 CALCulate lt n gt DELTamarker lt m gt LINK TO MARKer lt m gt on page 133 CALCulate lt n gt DELTamarker lt m gt LINK on page 133 Assigning the Marker to a Trace The Trace setting assigns the selected marker to an active trace The trace deter mines which value the marker shows at the marker position If the marker was previ ously assigned to a different trace the marker remains on the previous frequency or time but indicates the value of the new trace If a trace is turned off the assigned markers and marker functions are also deactiva ted Remo
186. to the LAYout REPLace WINDow com mand To add a new window use the LAYout WINDow lt n gt ADD command Parameters lt WindowType gt Type of measurement window you want to replace another one with See LAYout ADD WINDow on page 112 for a list of availa ble window types Example LAY WIND2 REPL MTAB Replaces the result display in window 2 with a marker table Configuring and Performing Sweeps When the MCGD application is activated a continuous sweep is performed automati cally However you can stop and start a new measurement any time Furthermore you can perform a sequence of measurements using the Sequencer see Multiple Measurement Channels and Sequencer Function on page 10 Useful commands for configuring sweeps described elsewhere SENSe AVERage lt n gt COUNt on page 131 Remote commands exclusive to BOR tette eras tad da Sng aa et poU eecestaderaedvma dd dea aras aeetdeitaa aT dv evi aa aaa du RE DRY dM 118 Nipate CON U TNI 118 INITiatesns CONTIBUONS 2 eerie ertet eran n eene Riera Rire nih Ice D RR ERR RR ED na 119 INITiate lt n gt IMMediate ccccceeeeeeecee cece ce eaeae aaa ea eae eee te teteeeeeeeeeeeeeeeeeeeseeesesasaeaaaaaaaeaaaaes 119 INI TIatesns SEQUuU6Sncer ABO ciento dno peer soacvaceevencdsuenrssaaucdes rh y Rand rer dde 120 INITiate n SEQuencer IMMediate eessssessssessssssee eene enne nnns nnns Danua nA Ee 120 INI
187. tpe lg ce Ead 106 SENSe SWEep COUNL coire Et dre ei deret veg DR Hee VE dye HA Ere E Poe z eX eR cS 122 SENSe SWEep COUNt CURRent eeeesseseseeseses esee nn nennen enne en EE nennen etn s ennt tse nne testen ness 123 ABORU C M 118 CALCulate GRPDelay MODE CALCulate lt n gt DELTamarker lt m gt AOFF CAL Culatesn gt DEL Tamarkersin gt LINK rec ouai cascade canes eo caeco Etre uro ence tcs eee a Pcr oda dun 133 CALCulate lt n gt DELTamarker lt m gt LINK TO MARKer lt m gt c ccccceceeeeeeeeeeeneeeeceeeeeceaeeeeseaeeeeeeaeeeeeneeeeenaaeess 133 CALCulate lt n gt DELTamarker lt m gt MAXimum LEFT E CALCulate lt n gt DEL Tamarkersm MAXimum NEXT acce ce ce nece citer eek aeu eva acre tna euh C Euer a CALCulate n DELTamarker m MAXimum RIGHLEt essere ener enne et nenr innen CALOCulate n DELTamarker m MAXimumy PEAK essent nennen CALCulatesn gt DEL Tamarker lt m gt MINIMUM LEF T iioc ce tiae cette tete et irte te eb o intr eec CALCulate lt n gt DELTamarker lt m gt MINimum NEXT CALCulate n DELTamarker m MlINimum RIGHE eeeesessesssssssseseeeeee seinen rennen ennt entren CALOCulate n DELTamarker m MlNimum PEAK eeeseeseeeeeeeeeneneneeneeen nennen CALCulate n DELTamarker m MODE essssssseseseses seen EEE AERONA
188. ults displayed in a measurement window Note that this command is maintained for compatibility reasons only Use the LAYout commands for new remote control programs see chapter 11 6 2 Working with Win dows in the Display on page 111 Parameters lt ResultType gt Commands for Compatibility Table 11 3 lt WindowType gt parameter values for Multi Carrier Group Delay K17 mode Parameter value Window type GAIN Gain GDELay Group Delay MAGNitude Magnitude Measurement data MTABle Marker table PHASe Phase Measurement data RMAGnitude Magnitude Reference data RPHase Phase vs frequency Reference data SENSe ADEMod BANDwidth DEModulation SENSe ADEMod BWIDth DEModulation This command queries the measurement bandwidth Note that this command is maintained for compatibility reasons only Use SENSe BANDwidth DEMod on page 104 for new remote control programs Return values Span Default unit HZ Usage Query only SENSe ADEMod MCPHase METHod Method This command selects the method used for group delay measurements As the R amp S FSW MCGD application only supports orthogonal measurements this command returns an error if the FLATtop parameter is used Parameters lt Method gt ORTHogonal FLATtop SENSe ADEMod MCPHase SPACing lt CarrierSpacing gt Sets queries the carrier spacing in Hz between the multiple carriers Note that this command is
189. 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 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 11 1 6 2 11 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 INF NINF 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
190. upled LO signal becomes visible at the RF frequency 0 Hz This effect is referred to as LO feedthrough To avoid the LO feedthrough the spectrum analyzer provides an alternative signal path to the A D converter referred to as the direct path By default the direct path is selected automatically for RF frequencies close to zero However this behavior can be deactivated If Direct Path is set to Off the spectrum analyzer always uses the ana log mixer path Auto Default The direct path is used automatically for frequencies close to zero Off The analog mixer path is always used Remote command INPut DPATh on page 86 High Pass Filter 1 3 GHz Activates an additional internal high pass filter for RF input signals from 1 GHz to 3 GHz This filter is used to remove the harmonics of the analyzer in order to measure the harmonics for a DUT for example This function requires an additional hardware option Note for RF input signals outside the specified range the high pass filter has no effect For signals with a frequency of approximately 4 GHz upwards the harmonics are suppressed sufficiently by the YIG filter Remote command INPut FILTer HPASs STATe on page 87 YIG Preselector Activates or deactivates the YIG preselector if available on the R amp S FSW An internal YIG preselector at the input of the R amp S FSW ensures that image frequen cies are rejected However this is only possible for a restricted bandwid
191. ure ree Remote control se 16 Settings rtr rte ERE n tei er E pd 44 Setup 13 22 Time 21 45 Time Displayed ner nre 11 Measurement channel Creating remote ttc e Deleting remote Duplicating remote Querying remote Renaming remote ove Replacing remote iet tns Measurement time AUTO SCHINGS 52 Min max values boo E 36 Mif um icis 65 Marker positioning 4 65 ATES a cori uuo decere een roco E tet ert dovute 65 MKR KEY aoevees 58 MKR gt CE access 63 64 Multi carrier MeaSUremenit 25 notet dert ete ee Yide eg dp 20 Multi Carrier Measurement method erre 13 Multi carriers Aligning with trace points OffSet oisean ns SPACING e Multiple Measurement channels teet 10 Multiple ZOOM assina emper tnn terrens 66 N Next MiRimblin iiim era et cbr pt etd ai 65 Marker POSiNONING scidit t onte citt eren a 65 Next Peak mA Marker position uci iri Eia ent e epi 65 Noise SOUTO me 50 Oo Offset FREQUONCY eS Reference level Options Electronic attenuation 2 nere 32 High pass filter Preamplifier issis eerte rete erret anas Orthogonal Measurement method Orthogonal frequency transformation OFT Output COMIQUIATION 2 ert
192. ut ADD WINDow on page 112 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 Example LAY WIND2 IDEN Queries the name of the result display in window 2 Response 2 Usage Query only LAYout WINDow n REMove This command removes the window specified by the suffix n from the display in the active measurement channel 11 7 Configuring and Performing Sweeps The result of this command is identical to the 1 3 yout REMove WINDow command Example LAY WIND2 REM Removes the result display in window 2 Usage Event LAY out 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
193. vacenaets 139 CALCulate n MARKer m MINimump PEAK eeeseeeseeeseeee eene aes nennen 139 CALCulate lt n gt MARKer lt m gt PEXCursion CALCulate lt n gt MARKer lt m gt TRAC Eisirein rtr rr eren rr ntn nd ta E E Eee E EU Re EE EO ERE SERRE e Be dic CE T 136 GALGulatesns MARKer stms Y uec ce trt reet i a ree eh ap 124 CALCulate lt n gt MARKer lt m S TAT6 io eut terrre rrr I ehe rt ternera Rer p den e nah 136 CALibration MCGD ts GAbLibration MGGD S EAT6 ioc rtp rro terrere EA Eee E kv Ep Ea re duds DIAGnostic SERVICe NSOUFrGS ero rne rena i en rir RE SEE ER KR E EENAA EAT NET 106 jiigEysdeltpo P 110 DISPlay MTABle m BISPlayEWINDOW SnP SIZE enr tr rne ner ten rt ire rerit DiE ENFECTAR NE 111 BISPlay WINDowsn 7 TRAC st LENGU ssc accorto teen ien gr tentare rrr eder rper once 125 DISPlayEWINDowsri7 TRACestz MODE tnr tr rne tp nn ent cont nere eire eres 129 DISPlay WINDow n TRACe t MODE HCONtinuous sessi 130 DISPlay WINDow lt n gt TRACe lt t gt SMOothing APERture sss DISPlay WINDow n TRACe t SMOothing S TATe sese DISPlay WINDowsn TRACe t Y SPACing ritiro eren ttr nbi rear nter DISPlay WINDowsrnz7 TRAGest XI SCALe e cc coton p cas teet ote ng eerte egg eren cag e DISPlay WINDow lt n gt TRACe lt t gt
194. ves the sweep result in the trace mem ory only if the new value is lower than the previous one Average The average is formed over several sweeps The Average Count on page 55 determines the number of averag ing procedures 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 129 Hold If activated traces in Min Hold Max Hold and Average mode are not reset after specific parameter changes have been made Normally the measurement is started again after parameter changes before the mea surement results are analyzed e g using a marker In all cases that require a new measurement after parameter changes the trace is reset automatically to avoid false results e g with span changes For applications that require no reset after parameter changes the automatic reset can be switched off The default setting is off Remote command DISPlay WINDow lt n gt TRACe lt t gt MODE HCONtinuous on page 130 Smoothing If enabled the Group Delay trace is smoothed by the specified value between 1 and 50 The smoothing value is defined as a percentage of the display width The larger the smoothing value the greater the smoothing effect Trace Settings This setting is only available for Group Delay Magnitude and Gain results For more information see chapter 5 5 Trace
195. window use the LAYout WINDow lt n gt IDENtify query Query parameters lt WindowName gt String containing the name of a window Return values Windowlndex Index number of the window Example LAY WIND IDEN 2 Queries the index of the result display named 2 Response 2 Usage Query only LAYout REMove WINDow lt WindowName gt This command removes a window from the display in the active measurement channel Configuring the Result Display Parameters lt WindowName gt String containing the name of the window In the default state the name of the window is its index Example LAY REM 2 Removes the result display in the window named 2 Usage Event 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 112 for a list of availa ble window type
196. witches on marker 3 Manual operation See Marker State on page 60 See Marker Type on page 60 CALCulate lt n gt MARKer lt m gt TRACe lt Trace gt This command selects the trace the marker is positioned on Note that the corresponding trace must have a trace mode other than Blank If necessary the command activates the marker first Parameters lt Trace gt Example CALC MARK3 TRAC 2 Assigns marker 3 to trace 2 Manual operation See Assigning the Marker to a Trace on page 61 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 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 The unit is s 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 18 See Marker Position X value on page 60 11 9 3 11 9 4 11 9 4 1 Analyzing Multi Carrier Group Delay Measurements General Marker Settings The following commands control general marker functionality lI Ap m tease 137 CAL Gulatesm sMARKersmbs LINI 12 21 rendec cux aezeu ataca tee cea aua ta da ccn a t ains naa dedu ane 137 DISPlay MTABle lt DisplayMode gt This command tu
197. y 148 Introduction Commands are 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 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 Introduction 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 FSW Remote command examples Note that some remote command examples mentioned in this general introduction may not be supported by this particular application 11 1 1 Conventions used in Descriptions Note the following conventions used in the remote command descriptions Command usage If not specified otherwise comman
198. zation For details on synchronization see the Remote Basics chapter in the R amp S FSW User Manual If the sweep mode is changed for a measurement channel while the Sequencer is active see INITiate lt n gt SEQuencer IMMediate on page 120 the mode is only considered the next time the measurement in that channel is activated by the Sequencer Suffix n irrelevant Parameters State ON OFF 0 1 ON 1 Continuous sweep OFF 0 Single sweep RST 1 Example INIT CONT OFF Switches the sweep mode to single sweep INIT CONT ON Switches the sweep mode to continuous sweep Manual operation See Continuous Sweep RUN CONT on page 48 INITiate lt n gt IMMediate This command starts a single new measurement With sweep count or average count gt 0 this means a restart of the corresponding number of measurements With trace mode MAXHold MINHold and AVERage the previous results are reset on restarting the measurement You can synchronize to the end of the measurement with OPC OPC or WAI Configuring and Performing Sweeps For details on synchronization see the Remote Basics chapter in the R amp S FSW User Manual Suffix n irrelevant Usage Event Manual operation See Single Sweep RUN SINGLE on page 48 INITiate lt n gt SEQuencer ABORt This command stops the currently active sequence of measurements The Sequencer itself is not deactivated so you can start a new sequence immediate

R&S FSW-K17 MC Group Delay User Manual

Contents

Download Pdf Manuals

Related Search

Related Contents

R&amp;S FSW-K17 MC Group Delay User Manual

Contents

Download Pdf Manuals

Related Search

Related Contents

R&S FSW-K17 MC Group Delay User Manual