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Manual - TRS RenTelco

1. 2 8 Making Spectrum Analyzer Measurements 2 9 Making a Basic Measurement 2 15 Example Measuring a 900 MHz signal 2 15 Save and Recall 2 20 v arre re ie 2 20 Battery 2 22 ChargingaNewB 2 22 Charging the Battery inthe HHSA 2 22 Charging the Battery in the Optional Charger 2 22 Determining Remaining Battery Life 2 23 Symbols 4X vei AT Sue Xs LT Dec E E pete de 2 26 Self Testos 2259 9 e UR e m b de cec n 2 26 Error Messages 4 2 do Gb Regu P 2 27 Using the Soft Carrying 2 29 Chapter 3 Key Functions Introduction 2 uh Ro orn 3 1 Hard Keys e I y I tea e CR ent Un S Ue P coe 3 1 Keys u A ot oem D GA EM SET TENES A ned 3 4 January 2004 10580 00074 Copyright 2002 2004 Anritsu Company Revision E Chapter 4 Measurement Fundamentals Introduction Ro Eos emo OST UN TR m wg 4 1 Measurement Fundamentals cres 4 1 Chapter 5 Field Measurements Introduction a ee y Ele RE s 5 1 Occupied Bandwidth c n 5 1 Channel Power 5 3 CDMA Ch
2. 3 14 3 11 Resolution Bandwidth 4 1 S Save 3 14 Save 3 11 Self Test io 2 26 serial interface 8 3 Service 1 9 Soft Carrying Case 2 29 SOfEKEY Sepa oe ge ox 3 4 Software Tools 8 1 1 5 Spectral Mask 4 14 Spurious Emissions 5 14 Standard Accessories 1 1 SWeeD c e g E e ok bos 2 10 4 2 Index 2 Symbols T Tracking Generator V Video Bandwidth Anritsu
3. 8 3 Downloading Traces 8 3 Plot CapturetothePC ees 8 4 Plot Upload to the 8 4 Plot Properties ratita km Sa mE Se aE eua 8 4 Index Chapter 1 General Information Introduction This chapter provides a description performance specifications optional accessories pre ventive maintenance and calibration requirements for the Anritsu Hand Held Spectrum An alyzer model listed below Throughout this manual this instrument may be referred to as an Anritsu HHSA Model Frequency Range MS2711B 100 kHz to 3000 MHz Description The Anritsu HHSA is a synthesizer based hand held spectrum analyzer that provides quick and accurate signal results Measurements can be easily made by using the main instrument functions frequency span amplitude and bandwidth Dedicated keys for common func tions and a familiar calculator type keypad are available for fast data entry Automatic time and date stamping of measurement data of up to 200 results is provided as is storage and re call of up to 10 measurement setups A large high resolution liquid crystal display LCD provides easy viewing in a variety of lighting conditions The Anritsu HHSA is capable of up to two and one half hours of continuous operation from a fully charged battery and can be operated from a 12 5 Vdc source which will also simultaneously charge the battery Built in energy conservatio
4. 95 dBm 2500 kHz typical with preamplifier off lt 80 dBm 500 kHz typical with preamplifier off gt 65 dB 2 dB 500 kHz typical 3 dB lt 500 kHz typical For input signal levels 60 dBm accuracy of 50 MHz 30 dBm 1 dB dBm m dBV m dBmV m dBuV m 2 to 15 dB division in 1 dB steps 10 divisions displayed Range 0 to 50 dB selected manually or automatically coupled to the reference level Resolution in 10 dB steps 1 5 Chapter 1 General Information Table 1 2 Performance Specifications 2 of 3 Description Value Display Type Monochrome LCD with back light capability Resolution 640 x 480 Marker Modes Standard delta marker to peak marker to center M1 to M4 only marker to valley M5 amp M6 only Memor Trace Storage Setup Storage Displayed Traces Inputs RF Input Connector RF Input VSWR RS232 Interface Type Baud Range Printer Interface Drivers Tracking Generator Frequency Range Resolution Tracking Offset Range Output Output Power Level Resolution Absolute Level Accuracy Output Tracking VSWR Spurious Harmonics Non Spurious Harmonics Measurement Range 1 6 200 traces 10 setups 2 traces 50 Q Female Type N 220 dB atten 2 0 1 typical Null modem 9600 19 2k 38 4k 56k 115 2k baud Refer to the list of supported printers on page 2 20 10 0 MHz to 3 0 GHz 5 0 kHz x5 MHz 0 to 60 dBm 0 1 dB 1 5 dB 0 to 40 d
5. Download traces saved in the instrument memory to the PC for storage and analysis O Upload traces from the PC to the instrument memory m Trace Overlay allows the viewing of three plots simultaneously Ability to save captured plots as data files dat file format or as records repre senting site information in a database file Ability to export plot data as text files for use in a spreadsheet txt file format Ability to save captured plots as graphic files wmf file format Ability to zoom in or out to analyze a particular region of the plot Ability to modify Plot Properties Ability to output plots to a printer for hard copy records Capture the current trace on the unit Oddadaduauda da Create antenna factor files to be uploaded to the instrument System Requirements The Software Tools program will run on most any computer running Windows 95 98 NT4 2000 ME XP Minimum requirements and recommendations are Intel Pentium 100 MHz microprocessor Pentium II 350 MHz or better recom mended 16 MB of RAM 64 MB or above recommended Hard disk drive with approximately 15 MB of available space An additional 20 MB free space for storage of captured plots is recommended A serial COM port or a USB port and USB power adapter cable for communi cation with the instrument Chapter 8 Software Tools NOTE It is recommended that Windows NT 4 0 users install NT 4 0 Service Pack 3 SP3 or above
6. 502 M2 Md MARKER TO Pos Peak PEAK MARKER FREQ TO CENTER SWP TIVE 33 335 1 8 70 dBm 947 562MHz EE 46 03 dB 21 052MHz M4 OFF Figure 5 7 Simulated Out of Band Spurious Emission Measurement 5 15 Chapter 5 Field Measurements In band Out of Channel Measurements The in band out of channel measurements are those measurements that measure distortion and interference within the system band but outside of the transmitting channel These measurements include 1 in band spurious emissions and 2 adjacent channel power ratio also called spectral regrowth There are stringent regulatory controls on the amount of in terference that a transmitter can spill to neighboring channels In order to determine compli ance with the allowable level of spurious emissions two parameters need to be specified g 0 Measurement channel bandwidth Allowable level of spurious emissions In band Spurious Measurement Required Equipment g Procedure Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 5 16 MS2711B Hand Held Spectrum Analyzer 30 dB 50 watt Bi Directional DC 18 GHz N m N f Attenuator Anritsu 42N50A 30 Test Port extension cable Anritsu 15NNF50 1 5C Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF
7. TRACE A dam RBW 10kHz VBW 30 kHz TER B50 000M IE PWR 22 96 1 230 000 MHz LOWER ACPR 50 91 dB UPPER ACPR 50 31 dB 29f Li ADJ Figure 5 4 Adjacent Channel Power Measurement Adjacent Channel Power Ratio is a constant measurement Once it is turned on it will re main on until it is turned off by pressing the MEASURE ON OFF key again When the ACPR measurement is on an ACPR icon appears to the left of the display ACPR is calcu lated at the end of a sweep An hourglass is displayed as the calculations are performed 5 10 Chapter 5 Field Measurements GSM Adjacent Channel Power Measurement Required Equipment g Procedure Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Step 11 Step 12 MS2711B Hand Held Spectrum Analyzer 30 dB 50 watt Bi Directional DC 18 GHz N m N f Attenuator Anritsu 42N50A 30 Test Port extension cable Anritsu 15NNF50 1 5C Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Using the test port extension cable a
8. is aes edo eben TFraralei Baud i i 116200 C 19200 56000 This only avvale on rever Sabe Meter models Figure 8 1 Communication Settings Dialog Box 8 2 Chapter 8 Software Tools Interface Cable Installation Communication between the instrument and the PC is accomplished over a null modem se rial cable provided with the instrument Anritsu part number 800 441 and optional USB to serial adaptor part number 551 1691 if required Step 1 Install the null modem serial interface cable to the Serial Interface connector on the test connector panel Step 2 Connect the other end of the serial interface cable to the appropriate COM port connector on the PC Step 3 Turn on both the instrument and the PC SERIAL INTERFACE NULL MODEM CABLE COM PORT Figure 8 2 Serial Cable Connection Using Software Tools Select Start Programs and select Software Tools Downloading Traces Traces that can be downloaded from the instrument are grouped by the date on which they were saved They are further organized in chronological order for each date with the oldest trace at the top of the list Each trace listing displays the trace name see page 3 3 and mea surement type for that trace Available measurement types are SA Spectrum Analyzer DTF Distance to Fault TG Tracking Generator Cable Loss TGF Trac
9. 5 11 on Gv eee ERES 5 7 CDMA Gs OA IS 5 3 GSM cues 5 5 Connectors 2 8 D Description lll 1 1 Dimensions 1 7 x asm Fey ERG 2 3 2 14 Dynamic 5 22 E Error Messages 2 27 ESI nd usu Ga eR SIL ans 1 8 F Fast Tune E 7 1 Field Measurements 5 1 Field Strength ln 5 18 frequency range 1 1 1 5 e y 2 2 Front panel keys 3 1 G Roommate te ere d 5 5 H 3 1 Impedance 2 14 In band s ug 5 16 L Language 2 14 3 15 Laits saeva ial 2 12 3 11 M Maintenance 1 8 Markers 2 11 3 12 measurements 2 9 2 15 4 1 menu structures 2 3 N Normalization 7 3 Index 1 Occupied Bandwidth 5 1 Optional Accessories 1 3 Options Bi Re 1 2 Out of Band 5 14 Out of Channel 5 16 P Performance Specifications 1 5 Power Measurements 5 20 PowerMonitor 3 16 5 20 Preamplifier 6 1 Preventive Maintenance 1 8 e ssp ae eRe ee Ai eek 1 2 Printing cle RR boxeo 2 20 Q Quick Start procedures 2 1 R Recall
10. Attach the measurement cables and connectors Step 2 Replace the DUT with a through line Step 3 Press the FREQ SPAN key and select the START and STOP soft keys to set the frequency range Step 4 Press the BW SWEEP key and select the RBW VBW soft keys to set the resolution bandwidth and video bandwidth Step 5 Press the AMPLITUDE key and adjust the reference level and attenuation such that the RF In is not saturated NOTE In Tracking Generator Fast Tune mode the RBW VBW and attenua tion mode settings are optimized to provide a faster measurement and cannot be changed Step 6 Press the AMPLITUDE key and select the TG OUTPUT LEVEL soft key Use the Up Down arrow key or the keypad to enter the desired TG output level 0 0 to 60 0 dBm and press ENTER to confirm the entry Step 7 Press the TRACE key and select the NORMALIZE softkey After the MS2711B has finished sweeping over the frequency range a straight line should appear at the top of the LCD display and the message NORMALIZATION DONE will be displayed momentarily in the center of the screen The reference level offset value will be automatically adjusted so that the top of the display is O dBm An asterisk will be dis played at the top of the display after the A as in TG TRACE A While normalization is enabled the trace taken during the normalization sweep is sub tracted from the current measured data When the DUT is put back in place o
11. Select setup location 0 to recall the factory preset state Using the test port extension cable and 30 dB attenuator connect the signal source to the input of the attenuator and connect the output of the attenuator to the RF In test port of the MS2711B Press the AMPLITUDE key and select the REF LEVEL soft key to set the ref erence level to 0 dBm Press the ATTEN soft key and set the attenuation to AUTO Press the BW SWEEP key and select the RBW and VBW soft keys to set the resolution bandwidth to 1 MHz and the video bandwidth to 300 KHz Press the BACK soft key and then the MAX HOLD soft key to set max hold to ON as indicated in the lower left of the display Select the CENTER FREQ soft key and enter 835 MHz Select the MAIN CHANNEL BW soft key and enter the main channel band width For the AMPS signal enter 20 MHz Select the ADJ CHANNEL BW soft key and enter the adjacent channel band width For the AMPS signal enter 30 KHz Select the CHANNEL SPACING soft key and enter the channel spacing For the AMPS signal enter 12 MHz Make the measurement by pressing the MEASURE ON OFF soft key The de tection method is automatically changed to Average Solid vertical lines are drawn on the display to indicate the main channel Dashed vertical lines define the adjacent channels The MS2711B will display the measurement results in the message area Adjacent Channel Power Ratio is a constant measurement Once it is turned on i
12. 3 Key Functions ADJACENT CHANNEL BW Sets the bandwidth of the adjacent chan nels for ACPR measurement CHANNEL SPACING Sets the channel spacing between the main and adjacent channels MEASURE ON OFF Begins or ends the ACPR measurement When the measurement is on ACPR will appear to the left of the display BACK Returns to the previous menu PREAMP Press this key to turn the preamplifier on and off if Option 8 is installed NOTE If the MS2711B is equipped with the Preamplifier option Option 8 and the preamplifier is ON the RF power in should be less than or equal to 50 dBm with 0 dB of internal attenuation and never more than 25 dBm regard less of attenuation If the MS2711B is not equipped with the Preamplifier option or the Preamplifier is OFF the RF power in should be less than or equal to 30 dBm with 0 dB of internal attenuation This level can increase to 20 dBm with 50 dB of internal attenuation MORE Press to access additional measurement functions AM FM Accesses a menu of AM FM demodulation options DEMOD ON OFF Turns AM FM demodulation on or off DEMOD TYPE Selects the type of demodulation to per form FM WIDE BAND FM NARROW BAND AM SSB CW VBW 100 kHz NOTE FM WIDEBAND should be used to properly demodulate FM signals VOLUME Adjust the demodulation speaker volume from 0 to 100 percent SET CTR FREQ STEP SIZE Allows checking of equally spaced f
13. ANRITSU INSTRUMENTS LTD 700 Silver Seven Road Suite 120 Kanata Ontario K2V 1C3 Telephone 613 591 2003 FAX 613 591 1006 CHINA SHANGHAI ANRITSU ELECTRONICS CO LTD 2F Rm B 52 Section Factory Bldg NO 516 Fu Te Road N Waigaoqiao Free Trade Zone Pudong Shanghai 200131 PR CHINA Telephone 86 21 58680226 FAX 86 21 58680588 FRANCE ANRITSU S A 9 Avenue du Quebec Zone de Courtaboeuf 91951 Les Ulis Cedex Telephone 016 09 21 550 FAX 016 44 61 065 GERMANY ANRITSU GmbH Grafenberger Allee 54 56 D 40237 Dusseldorf Germany Telephone 0211 968550 FAX 0211 9685555 INDIA MEERA AGENCIES P LTD A 23 Hauz Khas New Delhi India 110 016 Telephone 011 685 3959 FAX 011 686 6720 ISRAEL TECH CENT LTD 4 Raul Valenberg St Tel Aviv Israel 69719 Telephone 972 36 478563 FAX 972 36 478334 ITALY ANRITSU Sp A Rome Office Via E Vittorini 129 00144 Roma EUR Telephone 06 50 2299 711 FAX 06 50 22 4252 JAPAN ANRITSU CUSTOMER SERVICE LTD 1800 Onna Atsugi shi Kanagawa Prf 243 Japan Telephone 0462 96 6688 FAX 0462 25 8379 KOREA ANRITSU SERVICE CENTER 8F Sanwon Bldg 1329 8 Seocho Dong Seocho Ku Seoul Korea 137 070 Telephone 82 2 581 6603 FAX 82 2 582 6603 SINGAPORE ANRITSU SINGAPORE PTE LTD 10 Hoe Chiang Road 07 01 02 Keppel Towers Singapore 089315 Telephone 65 282 2400 FAX 65 282 2533 SOUTH AFRICA ETESCSA 12 Surrey Square Office Park 330 Surrey
14. In addition Windows 2000 and Windows ME may re quire installation of the latest Service Pack Please contact Microsoft Corpora tion for further information on obtaining and installing service packs Installation To install the Software Tools program Step 1 Insert the Anritsu Software Tools disk in the CDROM drive Step 2 From the Windows Start menu select Run Step 3 Type X Setup exe where X is the drive letter of your CDROM drive Step 4 When prompted press the Enter key to accept the default directory C Program Files Software Tools and the installation will begin The readme doc file on the disk provides updated information about the program and the Help function provides detailed operating information Communication Port Setting The Software Tools communicates with the instrument through a standard serial COM port on the PC Step 1 Select Start Programs and select Software Tools Step 2 When the program has loaded select Settings Communication Step 3 Select the appropriate PC COM port and Transfer Baud Rate for your system and click OK NOTE The 115200 Baud rate is not available on all models CEohcedFoms Operator Dorwrarnic son Dina Piot Settings Please elect the PC COH Post bo commsunmcahbe wath Sabe cT C CDM C N5 EDMZ C COME Pisce neler bo poa Site os Guide Section Lorsmuracabon Pos Suis
15. MZ OFF M4 OFF Figure 2 13 Battery Monitor Once all the power has drained from the battery the HHSA display will fade At this point your HHSA will switch itself off and the battery will need to be recharged 2 23 Chapter 2 Quick Start Guide During operation the battery condition can be viewed by pressing the SYS key and select ing the SELF TEST soft key The battery condition will be displayed as a percentage of charge remaining SELFTEST VOLTAGE BATTERY 11 1V TEMPERATURE 24 BATTERY CAL PASSED MEMORY PASSED LO ue PASSED BATTERY CHARGE 8496 RTC BATTERY VOLTAGE 2 5 3 5V 3 1V PRESS Baias TO CONTINUE Figure 2 14 Self Test Battery Condition Display Battery Life The NiMH battery will last longer and perform better if allowed to completely discharge before recharging For maximum battery life it is recommended that the NiMH battery be completely discharged and recharged once every three months Itis normal for NiMH batteries to self discharge during storage and to degrade to 8096 of original capacity after 12 months of continuous use Discharge 0 2 E V 1 0V Temperature 25 Retained Capacity D 5 10 15 20 Storage Time days Figure 2 15 NiMH Battery Storage Characteristics The battery can be charged and discharged 300 to 500 times but it will eventually wear out The battery may need to be replaced w
16. ON If Relative mode is currently OFF turns it ON and causes the power level to be measured and saved as the base level Subsequent measurements are then displayed relative to this saved value With units of dBm relative mode displays dBr with units of Watts relative mode displays percent Turns offset OFF if currently ON If Offset is currently OFF turns it ON and opens the Offset parameter for data entry using the keypad Press ENTER when data entry is complete Offset is the attenuation in dB in serted in the line between the DUT and the RF detector The attenuation is added to the measured input level prior to display Turns Zero OFF if currently ON If Zero is currently OFF turns it ON and initiates collection of a series of power level samples which are aver aged and saved This saved value is then subtracted from subsequent mea surements prior to display Chapter 4 Measurement Fundamentals Introduction This chapter demonstrates spectrum analyzer measurement techniques using the Anritsu HHSA with measurement techniques and examples of typical applications Each applica tion focuses on different features of the Anritsu HHSA Measurement applications and pro cedures covered in this section include Resolving Closely Spaced Signals Harmonic Distortion AM FM Modulation AM FM Demodulation Segmented Limit Lines Od0 0 0 Trace Overlay Measurement Fundamentals Advanced measurements require the use
17. PEAK and MARKER FREQ TO CENTER soft keys Step 13 Repeat Steps 11 and 12 until the center frequency is the frequency to be demod ulated Step 14 Press the FREQ SPAN key then press the SPAN and ZERO soft keys Step 15 Press MEASURE then MORE then DEMOD to return to the AM FM Demod menu Adjust the volume of the speaker by pressing the VOLUME soft key and using the Up down arrow key Setting the hand held spectrum analyzer to zero span will ensure continuous demodulation Otherwise demodulation will occur only during the spectrum analyzer sweep TRACE A RBW 1MHz 3kHz REF LVL 30 0 m ON OFF 40dB DIV DEMOD ATTEN TYPE OB SWP Cont RFin 500 VOLUME SET AMIFM CTR FREQ Pos Peak STEP SIZE STEP CENTER FREQ SWP TME Ll 454ms CENTER 100299 12 SPAN OHz DEMOD ON VOLUME 53 BACK TYPE FM WIDE BAND STEP OHz Figure 4 9 AM FM Demodulation 4 12 Chapter 4 Measurement Fundamentals Example 5 Field Strength Measurements antennas have loss or gain that can cause errors in measurements The MS2711B can correct for antenna loss or gain errors using Field Strength Measurements The antenna factors must be uploaded to the MS2711B using the Anritsu Software Tools provided with the unit These antenna factors can then be used to correct for the measure ment error Step 1 Enter the antenna factor information for the specific antenna into the antenna ed itor of the Software Tools see
18. Set the Start Frequency at gt 10 MHz To select the Tracking Generator Fast Tune option press the MODE key and use the Up Down arrow key to select TG FAST TUNE Press ENTER to confirm the selection Set the Start Frequency at gt 10 MHz 7 1 Chapter 7 Tracking Generator Tracking Generator Output Level To select the TG output level press the AMPLITUDE key and select the TG OUTPUT LEVEL soft key Use the Up Down arrow key or the keypad to enter the desired TG output level 0 0 to 60 0 dBm and press ENTER to confirm the entry Figure 7 1 shows the results of a through line from RF Out to RF In The tracking genera tor output level is set at 20 dBm TG TRACE A REF LVL 0 0 dBm 1 REF RBW 1MHz VBW id Ber Pos Peak 2024s START 10 000 REF LVL 0 0 dBm SCALE 10 dB Figure 7 1 Tracking Generator Output Level Tracking Generator Frequency Offset The Tracking Generator Frequency offset can be set from 5 MHz to 5 MHz Press the FREQ SPAN key and select the TG FREQ OFFSET soft key Use the Up Down arrow key or the keypad to enter the desired frequency offset and select either the GHz MHz kHz or Hz soft key to confirm the selection 7 2 Chapter 7 Tracking Generator Normalization The normalization feature is used to remove the insertion loss due to the cable s or connec tor s in the measurement setup Normalization should be done before the actual measure ment takes place Step 1
19. Test fails AND the battery is fully charged AND the Anritsu HHSA is within the specified operating range call your Anritsu Service Center During operation the self test can be executed by pressing the SYS key and selecting the SELF TEST soft key The resulting display Figure 2 14 page 2 24 provides current sta tus or pass fail test information on the following 2 26 Battery Voltage Ambient Temperature Battery Calibration Test Memory Test Local Oscillator Test Tracking Generator Phase Lock Loop Test if Option 20 is installed Battery Charge State percentage of charge remaining Real Time Clock Battery Voltage Chapter 2 Quick Start Guide Error Messages Self Test Errors A listing of Self Test Error messages is given in Table 2 2 Table 2 2 Self Test Error Messages Error Message BATTERY LOW EXTERNAL POWER LOW LO LOCK FAIL TG PLL FAIL EEPROM R W FAILED OUT OF TEMP RANGE POWER MONITOR FAIL BATTERY CAL LOST MEMORY FAIL RTC BATTERY LOW Description Battery voltage is less than 10 volts Charge battery f condition per sists call your Anritsu Service Center External supply voltage is less than 10 volts Call your Anritsu Ser vice Center The spectrum analyzer phase locked loops failed to lock Charge bat tery If condition persists with a fully charged battery call your Anritsu Service Center The tracking generator phase locked loops failed t
20. an output power level of 35 dBm 2 3 8 Ew ACPR Avg Det SWP TIME 901ms MAIN PWR 35 73 dBm LOWER ACPR 41 66 dB UPPER ACPR 42 43 dB RBW 4 MHz TRACE A _VBW_ 300 kHz MAIN CH BW 2 000 000 MHz ADJ CH BW 30 000 kHz CH SPACING 19 500 000 MHz Figure 5 5 GSM Adjacent Channel Power Measurement Adjacent Channel Power Ratio is a constant measurement Once it is turned on it will re main on until it is turned off by pressing the MEASURE ON OFF key again When the ACPR measurement is on an ACPR icon appears to the left of the display ACPR is calcu lated at the end of a sweep hourglass is displayed as the calculations are performed 5 12 Chapter 5 Field Measurements AMPS TDMA Adjacent Channel Power Measurement Required Equipment g Procedure Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Step 11 MS2711B Hand Held Spectrum Analyzer 30 dB 50 watt Bi Directional DC 18 GHz N m N f Attenuator Anritsu 42N50A 30 Test Port extension cable Anritsu 15NNF50 1 5C Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display
21. be difficult to see Chapter 6 Preamplifier Figure 6 1 shows the measurement results with the preamplifier off TRACEA REF LVL 80 0 dBm RBW 10kHez VBW 3kHz Figure 6 1 Preamplifier OFF Step 12 Turn the preamplifier on When the preamplifier is ON the word AMP should appear in the lower left corner of the display The displayed noise level should be lowered by approximately 20 dB on the dis play and the signal should appear on top of the displayed noise The noise level will drop further if the RBW is reduced Figure 6 2 shows the measurement results with the preamplifier on TRACEA REFLVL 800dBm _ 10kHz VBW 3kHz M si Hu 99 42 dBm 947501MHz M3 OFF M2 OFF M4 OFF Figure 6 2 Preamplifier ON 6 3 6 4 Chapter 7 Tracking Generator Description This chapter provides an overview of the Tracking Generator option Option 20 Examples of field measurements performed by MS2711B Hand Held Spectrum Analyzer in combina tion with the tracking generator are included A tracking generator TG is a signal generator with an output that tracks or follows the tuning of the spectrum analyzer and allows the MS2711B to perform network measure ments The tracking generator can be used to measure gain frequency response flatness and return loss in wireless communications systems from 10 MHz to 3000 MHz The MS2711B provides a one button normalization feature to compensate for
22. functions Use the corresponding softkey to select the desired trace function NOTE For this function Trace A is always the runtime trace and Trace B is al ways a saved trace Trace A is displayed as a darker trace while Trace B is lighter It may be necessary to adjust the contrast for optimal viewing page 3 2 Refer to page 3 14 for information on saving and recalling traces NORMALIZE This key is to be used to normalize the trace Trace A after a through cal ibration in the tracking generator and TG Fast Tune modes When using this feature error terms from cables and connectors are automatically sub tracted from the measurement results When the runtime trace Trace A is normalized an asterisk appears after the A in the title bar NOTE Normalization if desired must be performed again whenever the HHSA is powered off and back on or whenever the measurement setup is changed A B A B TRACE Stores the current runtime trace into the Trace B buffer Performs a subtraction trace math operation subtracting Trace B from Trace A Performs an addition trace math operation adding Trace B to Trace A Accesses a menu of trace operations RESET A Clears the current runtime trace and restarts the sweep NORMALIZE ON OFF Turns the normalization function on and off Normalization can only be turned on if there is valid normalization data for the current sweep BACK Returns to the previo
23. key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Using the test port extension cable and 30 dB 50 watt Bi directional attenuator connect the MS2711B to appropriate transmit test port Press the FREQ SPAN key and select the CENTER soft key Enter the center frequency Press the FREQ SPAN key and select the SPAN soft key Set the span wide enough to include the primary channel bandwidth and upper and lower channel bandwidths Press the AMPLITUDE key and select the REF LEVEL soft key to set the ref erence level to 0 dBm Press the ATTEN soft key and set the attenuation to AUTO Press the BW SWEEP key and select the RBW and VBW soft keys to set the resolution bandwidth to 10 kHz and the video bandwidth to 300 Hz Press the MARKER key and press the M1 soft key Press the EDIT soft key Use the Up down arrow key to move the marker over one of the spurs Press the ENTER key to set the marker Chapter 5 Field Measurements Step 10 Compare the value of the marker to the specified allowable level of in band out of channel spurious emissions for the corresponding channel trans mit frequency Step 11 Repeat steps 8 11 for the remaining spurs Use either Marker 1 again or choose another marker Figure 5 8 shows a simulated in band spur check at 6 MHz from the carr
24. measurement er rors caused by RF cables and other connectors in a measurement setup Tracking Generator The output of the tracking generator is connected to the input of the device under test DUT and the frequency response of the DUT is measured with the spectrum analyzer re ceiver The transfer characteristics of the DUT can be obtained and documented The TG will sweep in synchronization with the spectrum analyzer that is it can be tuned to the ex act frequency and span of the analyzer or it can be offset up to 5 MHz The output power level of the tracking generator can be set from 0 dBm to 60 dBm in 0 1 dB increments Tracking Generator Modes The Anritsu HHSA provides two tracking generator modes Tracking Generator Tracking Generator Fast Tune In Tracking Generator mode the user can adjust the RBW VBW and Attenuation to any combination of available settings to provide the most appropriate measurement for the cir cumstances In the Tracking Generator Fast Tune mode the MS2711B selects the best combination of RBW and VBW settings and makes only one measurement per display point to provide a faster measurement When the MS2711B is operating in Fast Tune mode the RBW VBW and Attenuation cannot be adjusted by the user Tracking Generator Operation To select the Tracking Generator option press the MODE key and use the Up Down arrow key to select TRACKING GENERATOR Press ENTER to confirm the selection
25. of the MS2711B using the two cables and the adapter Press the TRACE key and select the NORMALIZE softkey Wait for the NOR MALIZATION DONE message to be displayed Remove the adapter connect the cable from the RF Out port of the MS2711B to the J1 port of the filter and connect the cable from the RF In port of the MS2711B to the J2 port of the filter To measure the lowest insertion loss of the filter press the MARKER button and the M1 soft key Press the MARKER TO PEAK soft key The value of Marker 1 is the lowest insertion loss of the filter Adjust the filter to align for the best flatness across the band Chapter 7 Tracking Generator Antenna Isolation Test This section contains an example of an antenna isolation test using the Anritsu MS2711B with built in tracking generator option The following antennas are used in this example Antenna 1 Maxrad MFB8965 896 940 MHz 360 Omnidirectional Antenna 2 Huber Suhner Cellular 824 896 MHz 90 Directional Required Equipment Procedure 7 8 Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Step 11 MS2711B Hand Held Spectrum Analyzer HHSA with TG Option 20 Test Port extension cable Anritsu 15NNF50 1 5C Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressin
26. on the display Select setup location 0 to recall the factory preset state Step 2 Press the MEAS hard key Step 3 Select the PREAMP soft key to turn the preamplifier on or off When the preamplifier is on the word AMP will be displayed on the left side of the dis play If the preamplifier becomes saturated the message AMP SAT will be displayed and measurement results could be inaccurate NOTES The preamplifier is a broadband amplifier It can become saturated by a signal outside of the defined frequency span The dynamic attenuation feature will automatically activate the preamplifier when the MS2711B detects that the input signal level is below a certain level see page 5 22 This condition could result in the preamplifier being automati cally turned back on even after it has been manually turned off Dynamic attenuation is on when the symbol appears after the ATTEN icon on the left of the display Chapter 6 Preamplifier Preamplifier Measurement Example This section provides an overview of how to detect a low level signal with the help of the preamplifier option of a MS2711B Hand Held Spectrum Analyzer Required Equipment 0 Procedure Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Step 11 MS2711B Hand Held Spectrum Analyzer HHSA with Preamplifier Option 8 Test Port extension cable Anritsu 15NNF50 1 5C A signal source A
27. page 8 5 Step 2 Upload the antenna factors to the MS2711B Step 3 Press the MEAS function key on the MS2711B Step 4 Select the FIELD STRENGTH soft key from the measurement menu Step 5 Press the SELECT ANTENNA soft key To use one of the standard antennas recognized by the MS2711B select STANDARD and press the ENTER key Use the Up Down arrow key to select the desired antenna and press the ENTER key to select To use a custom antenna definition uploaded from the Software Tools Antenna Editor see Chapter 8 select CUSTOM and press the ENTER key Use the Up Down arrow key to select the desired antenna factor file and press the ENTER key to select The MS2711B will now automatically adjust the measurement results based on the antenna factors entered A FIELD STR icon appears to the left of the graph and the antenna name appears in the title bar at the top All marker values are displayed in V m TRACE A ANTENNA ALL 20 AF REFLVLODdBmim RBW 00kHz VBW 300Hz GEE 10dB DIV ATTEN EAT SWP Cont RFm 500 FIELD STR f MARKER Pos Peak PEAK MARKER FREQ TO CENTER SWP TME 4521s START OLAM 0 0 3718 mV m 597 263MHz M3 OFF M2 OFF M4 OFF Figure 4 10 Field Strength Measurements 4 13 Chapter 4 Measurement Fundamentals Example 6 Creating a Spectral Mask Quick go no go measurements can be performed by establishing test limits When using test limits the user is able to
28. quickly identify signals exceeding established limits as failing To aid users in establishing limits the Anritsu HHSA features both single limit and multi ple limit functions Example Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Step 11 Step 12 Step 13 4 14 Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Connect a signal source to the Anritsu HHSA spectrum analyzer Set attenuator coupling to AUTO Set the Reference Level to 0 dBm Set the scale to 10 dB div Set the signal source frequency to 900 MHz and the signal level to 20 dBm Set the HHSA center frequency at 900 MHz the span to 20 MHz resolution bandwidth to 30 kHz and video bandwidth to 300 Hz Press LIMIT and select MULTIPLE UPPER LIMITS using the appropriate softkey Select SEGMENT 1 using the appropriate softkey press EDIT and enter the start frequency start limit end frequency and end limit as prompted in the mes sage area The span is ten divisions wide therefore divide the span by 10 to de termine the span per division and desired starting point Enter star
29. select the M1 marker function Step 3 Press the EDIT soft key and enter an appropriate value using the keypad or Up Down arrow key Select the GHz MHz kHz or Hz softkey to accept the marker frequency input Pressing the ON OFF soft key activates or deactivates the M1 marker function Step 4 Press the BACK soft key to return to the Markers Menu 2 11 Chapter 2 Quick Start Guide Step 5 Repeat the steps for markers M2 M3 M4 M5 and M6 Adjusting Limits The MS2711B offers two types of limits a single horizontal limit line and segmented lim its Adjusting a Single Limit Step 1 Press the LIMIT key Step 2 Press the SINGLE LIMIT soft key Step 3 Press the EDIT soft key Step 4 Either enter the value using the numeric keypad or scroll the limit line using the UP DOWN arrow key Step 5 Press ENTER to set the location of the limit line The single limit line can be defined as either an upper limit or a lower limit Defining an UPPER Limit An upper limit is one where the measurement fails if the data appears ABOVE the limit line Press the BEEP AT LEVEL soft key if necessary so that the status window says FAIL IF DATA IS ABOVE LINE Defining a LOWER Limit A lower limit is one where the measurement fails if the data appears BELOW the limit line Press the BEEP AT LEVEL soft key if necessary so that the status window says FAIL IF DATA IS BELOW LINE Adjusting Segmented Limits Segmented limit lines are d
30. soft key corresponding to the desired coupling mode as described be low Auto Coupling Auto coupling of the attenuation links the attenuation to the reference level That is the higher the reference level the higher the attenuation Auto coupling is indicated on the dis play as ATTEN XX dB Manual Coupling When manually coupled the attenuation can be adjusted independently of the reference level Manual attenuation coupling is indicated on the display as ATTEN XX dB 2 13 Chapter 2 Quick Start Guide IMPORTANT The attenuation should be adjusted such that the maximum signal amplitude at the input mixer is 30 dBm or less For example if the reference level is 20 dBm the attenuation should be 50 dB such that the input signal at the mixer is 30 dBm 20 50 30 This prevents signal compression Dynamic Attenuation Dynamic attenuation tracks the input signal level automatically adjusting the reference level to the peak input signal When dynamic attenuation is enabled the attenuation is auto matically coupled to the reference level If the MS2711B is configured with the optional preamplifier dynamic attenuation automatically activates or de activates the preamplifier according to the signal environment Dynamic attenuation is indicated on the display as ATTEN XX daB Adjusting the Display Contrast The contrast of the MS2711B display can be adjusted to accommodate varying light condi tions and
31. table below for recommended settings for CW and CDMA signals Press the BW SWEEP key and select the RBW and VBW soft keys to set the resolution bandwidth and video bandwidth See the table below for recom mended settings for CW and CDMA signals Chapter 5 Field Measurements CW IS 95 CDMA Reference Level 15 dBm 10 dBm Input Attenuation Level Auto Auto Resolution Bandwidth Auto 10 kHz Video Bandwidth Auto 30 kHz Step 6 Step 7 Step 8 Press the MEAS key and press the ACPR soft key Select the CENTER FREQ soft key and enter the desired center frequency Select the MAIN CHANNEL BW soft key and enter the desired main channel bandwidth For an IS 95 CDMA signal enter 1 23 MHz Step 9 Select the ADJ CHANNEL BW soft key and enter the desired adjacent channel bandwidth For an IS 95 CDMA signal enter 30 kHz Step 10 Select the CHANNEL SPACING soft key and enter the desired channel spac ing For an IS 95 CDMA signal enter 885 kHz Step 11 Make the measurement by pressing the MEASURE ON OFF soft key The de tection method is automatically changed to Average Solid vertical lines are drawn on the display to indicate the main channel Dashed vertical lines define the adjacent channels The MS2711B will display the measurement results in the message area Figure 5 4 displays the results of the measurement using a CDMA signal generator with an output power level of 25 dBm
32. test featuring battery calibration memory and local oscillator testing 50 Q Sets the input impedance of the instrument to 50 ohms which is the de fault setting The input impedance setting is also displayed on the left side of display as RF In 500 75 Q Displays measurements as if the input impedance was set to 75 ohms The actual input impedance is still 500 but the displayed information is trans formed to the equivalent 75 2 value based on the offset value specified by the adapter used in the measurement This setting is commonly used for cable TV related measurement The input impedance setting is displayed on the left side of display as RF In 75 3 14 Chapter 3 Key Functions Language ANRITSU 12N50 75B Sets the loss setting for the Anritsu 12N50 75B adapter Pressing this soft key will compensate 7 5 dB for the loss of the adapter OTHER ADAPTER OFFSET This key allows the users to enter other adapter offset values Enter the desired loss using keypad and press the ENTER key to accept BACK Returns to the previous menu level Pressing this soft key immediately changes the language used to display messages on the display Choices in order are English French German Spanish Chinese simplified and Japanese The default language is Eng lish Options Menu Second Level Provides access to a second level menu of options related functions Use the corresponding softkey to select the desired function P
33. the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Upload the antenna information to the MS2711B see page 8 9 Connect the antenna to the MS2711B Press the FREQ SPAN key and select the CENTER soft key Enter the center frequency Press the FREQ SPAN key and select the SPAN soft key Set the span wide enough to include the primary channel bandwidth and upper and lower channel bandwidths Press the BW SWEEP key and select the RBW and VBW soft keys to set the resolution bandwidth to 10 kHz and the video bandwidth to 300 Hz Press the MEAS key Select the FIELD STRENGTH soft key Press the SELECT ANTENNA soft key To use a custom antenna definition uploaded from the Software Tools Antenna Editor see Chapter 8 select CUSTOM and press the ENTER key Use the Up Down arrow key to select the desired antenna factor file and press the ENTER key to select To use one of the standard antennas recognized by the MS2711B select STAN DARD and press the ENTER key Use the Up Down arrow key to select the de sired antenna and press the ENTER key to select To change the unit of measurement press the AMPLITUDE hard key then press the UNIT
34. turn on marker and set it to the highest point on the trace Step 4 Read both frequency and the amplitude values identified by the selected marker These values are displayed in the message area at the bottom of the display Figure 2 11 The current marker is highlighted TRACE A REF LVL 0 0 dBm RBW 1MHz VBW 1 kHz Pos Peak 100s _ CENTERSOQDDOMHz ___ 2000002 _ 9 98 dBm 899 874MH2 M2 OFF M4 OFF Figure 2 11 Activated Normal Marker NOTE A marker can be placed at the peak of the signal by pressing MARKER TO PEAK or by using the up down arrow key to move the marker manually When using more than one marker it may be desirable to use the marker delta function defined as delta Mx M1 in the active function box The marker delta function reads the difference in amplitude and frequency between two signals and displays the values in the area below the display 2 19 Chapter 2 Quick Start Guide Save and Recall Display The MS2711B can store up to 200 trace displays in internal memory Stored traces can be recalled to the display or uploaded to a PC using the Software Tools program see Chapter 8 Software Tools Save the Display Step 1 Step 2 Step 3 Press the SAVE DISPLAY key To enter a name for the display press the soft key letter group that contains the desired letter then select the soft key for that letter Continue to select letters u
35. value is displayed to the left of the display below the ATTEN 3 5 Chapter 3 Key Functions IMPORTANT Attenuation is normally a coupled function and is automatically adjusted when the reference level changes The reference level will not change however when the attenuator changes The attenuator should be adjusted so that the maximum signal amplitude at the input mixer is 30 dBm or less For example if the reference level is 20 dBm the attenuation should be 50 dB for an input signal of 30 dBm at the mixer 20 50 30 This prevents signal compression This is with the preamplifier off UNITS REF LEVEL OFFSET TG OUTPUT LEVEL DYNAMIC Turns on the dynamic attenuation control feature The value is displayed to the left of the display below the ATTEN The dynamic attenuation feature automatically adjusts the reference level to the optimum display level for the peak sig nal Attenuation is coupled to the reference level when dy namic attenuation is enabled It will also turn on the preamplifier if installed in a low level signal situation and turn off the preamplifier when it is no longer needed Choose from the menu of amplitude related units Selection of dBm sets absolute decibels relative to 1 mW as the amplitude unit Selection of dBV dBmV or dBuV sets absolute decibels relative to 1 volt 1 millivolt or 1 microvolt respectively as the amplitude unit The selection of mW READOUT is independ
36. video bandwidth filters If an analyzer is swept very quickly the filters do not have time to respond and the measurement is inaccurate Under such conditions the analyzer display tends to have a smeared look to it with the spectral lines being wider than normal and shifted to the right Fortunately the Anritsu Hand Held Spectrum Analyzer has mechanisms designed into it that unburden the user from having to calculate the sweep rate When changing the RBW and VBW the sweep rate will change accordingly The sweep rate will be faster for a wide RBW or VBW and slower for a narrow RBW or VBW Chapter 4 Measurement Fundamentals Attenuator Functions Attenuation adjusts the hand held spectrum analyzer input attenuator In AUTO mode as the reference level is increased the attenuation is increased In MANUAL mode the input attenuation can be adjusted by using the Up down arrow key The attenuator range is 0 to 50 dB in 10 dB steps IMPORTANT Attenuation is normally a coupled function and is automatically adjusted when the reference level changes The reference level will not change however when the attenuator changes The attenuator should be adjusted so that the maximum signal amplitude at the input mixer is 30 dBm or less For example if the reference level is 20 dBm the attenuation should be 50 dB for an input signal of 30 dBm at the mixer 20 50 30 This prevents signal compression NOTE It is be
37. 1 2 5 1 2 5 REF REF TG LEVEL SCALE ATTEN UNITS LEVEL OUTPUT OFFSET LEVEL w w HB AUTO vanua d mW dBm dBV dBmV TA MAX DETEC AVERAGE RBW HOLD TION 4 B MANUAL MANUAL POSITIVE gt gt m c c gt A AVERAGE LINE NEGATIVE Figure 2 5 Function Hard Keys Menu Structure Tracking Generator Modes Chapter 2 Quick Start Guide MODE MENU SOFT KEYS SPECTRUM A B A B ANALYZER GRACE NORMAL A TRACE TRACE DEFAULT IZE A B NORMAL TRACE RESET A IZE BACK ON OFF RECALL TRACE VIEW cLeaR REGALI SEK B B B FIELD ed MEAS RD ow ANNELI ACPR PREAMP MORE FIELD SELECT STRNGTH ON OFF ANTENNA BACK OBW vemo dBc L4 BACK CHANNEL CENTER INT CHANNEL MEASURE pack POWER FREQ BW SPAN ON OFF AGER CENTER MAIN pon CHANNEL MEASURE ack FREQ BU SPACING ON OFF AM FM MORE DNEM BACK AM FM DEMOD BFO DEMOD ON OFF VOLUME BACK me TYPE ADJUST DEMOD DEMOD m STEP ow VOLUME CTRFREQ CENTER BACK DE STEPSIZE FREQ MULTIPLE MULTIPLE LIMIT SINGLE UPPER LOWER LIMITS LIMITS BEEP MEE ED
38. 115 or 12 5 Vdc Automotive Cigarette Lighter Adapter P N 806 62 Both items are included as standard accessories see Chapter 1 Press the ON OFF front panel button Figure 2 1 5S OW CAnritsu MS2711B IN ESCAPE CLEAR TaN save RECALL SETUP 7V 6 ee ON OFF Key umit MARKER 8 save RECALL DISPLAY Xi A f Freq span awecTuve f MODE FREQ SPAN AMPLITUDE BW SWEEP J V J Y NES Figure 2 1 MS2711B Power ON OFF Key The HHSA takes about five seconds to perform a series of self diagnostic routines At com pletion the screen displays the Anritsu logo the model number and the version of firm ware It also prompts you to press ENTER to continue 2 1 Chapter 2 Quick Start Guide The Anritsu HHSA is now ready for operation No additional keystrokes or installation are required For information on making measurements with the Anritsu HHSA refer to Making a Basic Measurement on page 2 15 For advanced applications refer to Chapter 4 Measurement Fundamentals Chapter 6 Preamplifier and Chapter 7 Tracking Genera tor Front Panel Overview The Anritsu HHSA menu driven user interface is easy to use and requires little training Hard keys on the fr
39. 20 017MHz OFF a2 46 24 dB 9947MHz Figure 4 6 Harmonic Distortion 4 8 Chapter 4 Measurement Fundamentals Example 3 AM FM Modulation is the process of translating some low frequency or baseband signal voice mu sic or data to a higher frequency In the modulation process some characteristic of a car rier signal usually amplitude or frequency is changed in direct proportion to the instantaneous amplitude of the baseband signal The following procedure describes how to measure signals with AM and FM types of mod ulation It shows how to tune the signal on the spectrum analyzer display Amplitude Modulation Step 1 Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Step 2 Connect a signal source to the spectrum analyzer input Step 3 Set the source to a carrier frequency of 100 MHz 25 dBm with an amplitude modulation of about 35 kHz at 10 modulation Step 4 Set the spectrum analyzer center frequency to 100 MHz Set the span to 500 kHz Step 5 To determine the frequency of the carrier press the MARKER key and M1 soft key Then press the MARKER TO PEAK soft key to aut
40. 6 dBm at 890 MHz TG TRACE A REF LVL 0 0 dBm RBW 1MHz VBW 300 kHz 10dB DIV ATTEN 1088 SWP Single RFln Pos Peak SWPTME L1 HOLD START 808 000MHz STOP 960 000MHz ALL MA 23 13 dBm 820929MHz M3 OFF OFF 2 26 02 dBm 890 140MHz M4 OFF Figure 7 4 Initial Antenna Isolation Change the angle of the panel antenna by adjusting the mounting position Adjust both an tennas for maximum isolation more negative means better isolation Figure 7 5 shows the results of adjusting the positions of the antennas The isolation at 830 MHz improved to 54 5 dBm and the isolation at 890 MHz improved to 34 dBm TG TRACE A REF LVL 0 0 dBm RBW 1 MHz VBW 300 kHz Mi 10dB DIV ATTEN 10dB SWP Cont RFin 500 Pos Peak START 606 000MHz 1 54 50 dBm 829 929MH2z M3 OFF OFF M2 34 38 dBm 890 140MHz M4 OFF SWP TIVE 1 645 Figure 7 5 Antenna Isolation After Antenna Adjustment 7 9 7 10 Chapter 8 Software Tools Introduction This chapter provides a description of the Anritsu Software Tools program Software Tools is a Windows 95 98 NT4 2000 ME XP program for transferring measured traces along with markers and limit lines to the PC display The program help function provides on screen instructions on display modification trace overlay uploading and downloading traces and multiple plot printing Features Software Tools provides the following features
41. Anritsu MS2711B Hand Held Spectrum Analyzer User s Guide Hand Held Spectrum Analyzer for Measuring Monitoring and Analyzing Signal Environments WARRANTY The Anritsu product s listed on the title page is are warranted against defects in materials and workmanship for one year from the date of shipment Anritsu s obligation covers repairing or replacing products which prove to be defec tive during the warranty period Buyers shall prepay transportation charges for equipment returned to Anritsu for warranty repairs Obligation is limited to the origi nal purchaser Anritsu is not liable for consequential damages LIMITATION OF WARRANTY The foregoing warranty does not apply to Anritsu connectors that have failed due to normal wear Also the warranty does not apply to defects resulting from improper or inadequate maintenance by the Buyer unauthorized modification or misuse or op eration outside the environmental specifications of the product No other warranty is expressed or implied and the remedies provided herein are the Buyer s sole and exclusive remedies TRADEMARK ACKNOWLEDGMENTS MS DOS Windows Windows for Workgroups Windows 95 98 NT4 2000 ME XP are registered trademarks of the Microsoft Corporation Anritsu ia a trademark of Anritsu Company NOTICE Anritsu Company has prepared this manual for use by Anritsu Company personnel and customers as a guide for the proper installation operation and maintenance of A
42. Avenue Ferndale Randburt 2194 South Africa Telephone 011 27 11 787 7200 Fax 011 27 11 787 0446 SWEDEN ANRITSU AB Botvid Center Fittja Backe 13A 145 84 Stockholm Sweden Telephone 08 534 707 00 FAX 08 534 707 30 TAIWAN ANRITSU CO LTD 6F No 96 Section 3 Chien Kuo N Road Taipei Taiwan R O C Telephone 02 515 6050 FAX 02 509 5519 UNITED KINGDOM ANRITSU LTD 200 Capability Green Luton Bedfordshire LU1 3LU England Telephone 015 82 43 3200 FAX 015 82 73 1303 1 9 1 10 Chapter 2 Quick Start Guide Introduction This chapter provides a brief overview of the Anritsu MS2711B HHSA The intent of this chapter is to provide the user with a starting point for making basic measurements For more detailed information users may want to consult Chapter 3 Key Functions or Chapter 4 Measurement Fundamentals Turning the MS2711B On for the First Time The Anritsu MS2711B HHSA is a lightweight hand held battery operated unit designed specifically for field environments and applications requiring mobility It is capable of up to 2 5 hours of continuous operation from a fully charged field replaceable battery Built in energy conservation features allow battery life to be extended over an eight hour workday The Anritsu MS2711B HHSA can also be operated from a 12 5 Vdc source which will also simultaneously charge the battery This can be achieved with either the Anritsu AC DC Adapter P N 40
43. Bm 4 0 dB 40 dBm to 60 dBm 2 0 1 0 dBm 1 5 1 12 dBm lt 20 dBc lt 20 dBc 20 to 90 dBm gt 10 MHz typical w tracking generator on Chapter 1 General Information Table 1 2 Performance Specifications 3 of 3 Description Value Preamplifier Frequency Range Amplitude Gain Measurement Range Maximum Input Level Displayed Avg Noise Level General Characteristics Dimensions Weight Power Requirements Temperature Electromagnetic Compatibility Safety 1 0 MHz to 3 0 GHz 20 dB 1 0 MHz to 3 0 GHz typical 25 dBm to 115 dBm typical with preamplifier on 13 dBm without damage 50 VDC 115 dBm 1 MHz to GHz typical 10 x 7 x 2 4 inches 25 4 x 17 8 x 6 1 centimeters base model 4 5 pounds 2 02 kg including battery with all options 4 9 pounds 2 2 kg including battery NIMH battery 10 8 volts 1800 mA maximum External DC input 11 to 15 Vdc 1250 mA max Operating 0 to 50 C 85 or less humidity Non operating 20 to 75 C Meets European community requirements for CE marking Conforms to EN 61010 1 for Class 1 portable equipment 1 7 Chapter 1 General Information Preventive Maintenance Anritsu HHSA preventive maintenance consists of cleaning the unit and inspecting and cleaning the RF connector on the instrument and all accessories Clean the Anritsu HHSA with a soft lint free cloth dampened with water or water an
44. Bm 947 501MHz M2 OFF MESSAGE AREA Figure 2 3 Display Overview Figures 2 4 through 2 7 illustrate the menu structures and soft key labels for each menu se lection Refer to Chapter 3 Key Functions for more detailed hard and soft key descriptions 2 3 Chapter 2 Quick Start Guide MODE MENU SOFT KEYS SPECTRUM ANALYZER FREQ SPAN CENTER SPAN START STOP DEFAULT CENTER START GHz MHz kHz Hz STOP SPAN SPAN SPAN EDIT FULL ZERO UP DOWN BACK 1 2 5 1 2 5 REF REF AMPLITUDE EVEL SCALE ATTEN UNITS LEVEL OFFSET ATTEN AUTO MANUAL DYNAMIC BACK UNITS dBm dBV dBmV dBuV m BACK READOUT MAX DETEC AVERAGE BW SWEEP RBW VBW HOLD TION 1 25 RBW AUTO MANUAL BACK VBW AUTO MANUAL BACK POSITIVE S DETECTION PEAK AVERAGE PEAK BACK POWER MONITOR POWER MONITOR UNITS REL OFFSET ZERO Figure 2 4 Function Hard Keys Menu Structure Spectrum Analyzer and Power Monitor Modes 2 4 Chapter 2 Quick Start Guide MODES MENU TRACKING GENERATOR TG FAST TUNE RER SPAN TG CENTER FREQ START OFFSET STOP SPAN AMPLITUDE ATTEN UNITS BW SWEEP RBW VBW DETECTION SOFT KEYS CENTER SPAN START E TG FREQ OFFSET GHz MHz kHz m p e e r N m 2 H cS I gt N z 2o Ov gt Q A
45. ENNA SAVED WITH THE SETUP COULD NOT BE FOUND PLEASE RESELECT THE ANTENNA TO MAKE A FIELD STRENGTH MEA SUREMENT LIMIT SEGMENT REQUIRES START FREQ lt END FREQ LIMIT SEGMENTS CANNOT OVER LAP PRESS ON OFF TO DIS ABLE LIMIT PRESS EDIT TO CHANGE ENDPTS Description Attempting to recall a display from a location that has not been previ ously written to or that contains invalid sweep data Attempting to print a display with no printer selected Select a printer see Printer Setup page 2 20 then retry Attempting to perform a Power Monitor zero adjust function with no RF detector connected to the Anritsu HHSA Attempting to perform a Power Monitor zero adjust function with an input of greater than 20 dBm Attempting to enter Power Monitor mode with no Option 5 installed The preamp input is saturated but there is no peak in the specified fre quency range that has enough power to saturate the preamp This error message can only appear when attenuation is set to DYNAMIC and Option 8 is installed The setup was saved with the name of an antenna that is no longer present in that unit Select another antenna name or use the Software Tools program to reload the antenna A limit segment must have a starting frequency less than or equal to the ending frequency Edit the segment again to change the endpoint settings Two or more limit segments are defined such that their endpoints over lap An upper limit segme
46. Hz Averaging function OFF Required Equipment 0 Procedure Step 1 Step 2 Step 3 Step 4 MS2711B Hand Held Spectrum Analyzer HHSA 30 dB 50 Watt bi directional DC 18 GHz N m N f Attenuator Test Port extension cable Anritsu 15NNF50 1 5C Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Using the test port extension cable and 30 dB attenuator connect the signal source to the input of the attenuator and connect the output of the attenuator to the RF In test port of the MS2711B Press the AMPLITUDE key and select the REF LEVEL soft key to set the ref erence level to 10 dBm Press the SCALE soft key and set the scale to 10 dB division 5 3 Chapter 5 Field Measurements Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Press the ATTEN soft key followed by the MANUAL soft key and set the atten uation to 20 dB Press the BW SWEEP key and select the RBW and VBW soft keys to set the resolution bandwidth to 10 kHz and the video bandwidth to 30 kHz or greater Press the MEAS key and press the CHANNEL POWER soft key Select the CENTER FREQ soft key an
47. IT AT BACK LEVEL reis SEGMENT SEGMENT SEGMENT sEGMENT SEGMENT gcc LIMITS 1 3 4 5 MULTIPLE SEGMENT sEGMENT SEGMENT SEGMENT seGwENT pack LIMITS 1 2 3 4 5 SEGMENT ON OFF EDIT Ex SECMENT BACK Figure 2 6 Keypad Hard Keys Menu Structure Chapter 2 Quick Start Guide MODE MENU SOFT KEYS SEECTRUM M1 M2 M3 M4 ANALYZER MARKER MORE ALL DEFAULT 4 4 OFF MARKER MARKER M1 ON OFF EDIT TO FREQ TO BACK PEAK CENTER M2 DELTA MARKER MARKER M3 ON OFF EDIT ux M1 TO FREQTO BACK M4 PEAK CENTER MORE 5 Me BACK PEAK VALLEY M5 ON OFF EDIT BETWEEN BETWEEN BACK M1 amp M2 M1 amp M2 PEAK VALLEY M6 ON OFF EDIT BETWEEN BETWEEN M3 amp M4 M3 amp M4 SELF Language SYS OPTIONS CLOCK TEST 50 Q 75Q ENGLISH CHANGE OPTIONS PRINTER DATE BACK FORMAT CLOCK HOUR MINUTE MONTH DAY YEAR BACK ANRITSU OTHER 75 Q 12N50 ADAPTER BACK 75B OFFSET d _ H t EHE Figure 2 7 Keypad Hard Keys Menu Structure continued Chapter 2 Quick Start Guide Test Panel Connectors The connectors and indicators located on the test panel are listed and described below 12 5 15VDC 1100 mA DC input to power the unit or for battery charging Input is 12 5 to 15 Vdc 1100 mA WARNING When using the AC DC Adapter always use a three wire power cable con nected to a three
48. N ON Printer Setup Step 1 Connect the printer as shown in Figure 2 12 SERIAL CABLE T 2000 756 m QUU HP 350 DESKJET p a ER E a7 EN eh er ae Sy i a Sse E ia SERIAL TO PARALLEL T J ae INTERFACE CABLE P 2000 753 ee Figure 2 12 Printer Setup Step 2 Press the SYS key and the OPTIONS soft key Step 3 Press the PRINTER soft key and select from the displayed menu of supported printers Step 4 Press ENTER to select the printer NOTE The above procedure applies only to newly connected printers If a printer has been previously connected and used simply pressing the PRINT key will initiate the print process Printing a Screen Step 1 Connect the printer as shown in Figure 2 12 Step 2 Obtain the desired measurement display Step 3 Press the PRINT key Step 4 Press ENTER when the printer is ready 2 21 Chapter 2 Quick Start Guide Battery Information Charging a New Battery The NiMH battery supplied with the HHSA has already completed three charge and dis charge cycles at the factory and full battery performance should be realized after your first charge NOTE The battery will not charge if the battery temperature is above 45 C or below 0 C Charging the Battery in the HHSA The battery can be charged while installed in the HHSA Step 1 Turn the HHSA off Step 2 Connect the AC DC adapter Anritsu part number 40 115 t
49. N61326 1998 10096 20msec Electrical Safety Requirement Product Safety The Product Complies when used with Company supplied Power Supply tested to EN 60950 Corporate Quality Director oz bee oJ Date Morgan Hill CA European Contact For Anritsu product EMC amp LVD information contact Anritsu LTD Rutherford Close Stevenage Herts SG1 2EF UK FAX 44 1438 740202 Table of Contents Chapter 1 General Information Introduction s uem EUR RU y dn 1 1 Descriptions 2 245 1 ie SY RS ure S Wee TUER E 1 1 Standard Accessories 0 0 00 0 ee eee eee eee eens 1 1 Options snes ses Apu RSS IS On ONG aoe aie oe 1 2 Printers PS Ge Tay SS tu Ot est Te Te 1 2 Optional 1 3 Performance Specifications 1 5 Preventive 1 8 Calibration ise 0 oa de oh xU EEUU ow X 1 8 Annual 1 8 ESD Cautions i x n ROM x Ea eA oe 1 8 Anritsu Service Centers 1 9 Chapter 2 Quick Start Guide Introduction eo ARR ea exu SE e TR RR 2 1 Turning the MS2711B On for the First 2 1 Front Panel Overview 2 2 Display Overview sns n o o le Lm ee 2 3 Test Panel 5
50. RINTER CHANGE DATE FORMAT Displays a menu of supported printers Use the Up Down arrow key and ENTER key to select the connected printer Pressing this soft key changes the format of the date as displayed in the message area Choices are MM DD YYYY DD MM YYYY YYYY MM DD MM DD YY DD MM YY or YY MM DD Clock Menu Second Level Provides access to a second level menu of clock related functions Use the corresponding softkey to select the desired function HOUR MINUTE MONTH DAY YEAR BACK The hour is displayed in the message area Enter the desired hour 0 23 using the keypad and press ENTER to accept The minute is displayed in the message area Enter the desired minute 0 59 using the keypad and press ENTER to accept The month is displayed in the message area Enter the desired month 1 12 using the keypad and press ENTER to accept The day as displayed in the message area Enter the desired day 1 31 us ing the keypad and press ENTER to accept The year as displayed in the message area Enter the desired year 1997 2038 using the keypad and press ENTER to accept Returns user to the top level systems menu 3 15 Chapter 3 Key Functions Power Monitor Menu When the mode of operation is changed to Power Monitor the power monitor menu provides for setting power monitor parameters UNITS REL OFFSET ZERO 3 16 Toggles between dBm and Watts Turns relative mode OFF if currently
51. Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Step 2 Provide a signal to the spectrum analyzer by connecting an antenna to the input port of the spectrum analyzer Step 3 Press the MEASURE soft key then the MORE soft key Step 4 Press the AM FM DEMOD soft key Step 5 Press the DEMOD TYPE soft key and select FM WIDEBAND Step 6 Activate FM demodulation by pressing the ON OFF soft key Step 7 Select the appropriate resolution bandwidth video bandwidth and reference level to enhance the selection of desired signal For wide band FM the resolu tion bandwidth should be 1 MHz Reference level should be roughly 30 dBm or less for weak signals 4 11 Chapter 4 Measurement Fundamentals Step 8 Position Marker 1 on the signal of interest If the signal of interest is the highest in amplitude press MARKER TO PEAK directly then MARKER FREQ TO CENTER to center the peak signal on the display Step 9 To obtain continuous demodulation of the signal a span of zero is needed If the current span is narrow press the FREQ SPAN key then press the SPAN and ZERO soft keys Skip to Step 15 Step 10 If the current span is wide slowly reduce the span and adjust the marker loca tion center frequency see steps 11 14 Step 11 Press the FREQ SPAN key then press the SPAN and SPAN DOWN 1 2 5 soft keys Step 12 Press the MARKER key the M1 soft key followed by the MARKER TO
52. S soft key and select dBm dBV dBmV or dBuV using the des ignated soft key The MS2711B HHSA will automatically adjust the measurement by the antenna factors se lected Marker values will be displayed in V m A FIELD STR icon will appear to the left of the graph and the antenna name will be in the title bar above the graph 5 18 Chapter 5 Field Measurements Figure 5 9 shows the results of a measurement using an R amp S HE200 antenna NE TRACE A ANTENNA amp 5 200 REF LVL 0 0 dBm m RBW 100 kHz VBW 300 kHz 10dB DIV ATTEN 30dB SWP Cont RFin 5022 10 g FELD STR Pos Peak Figure 5 9 Field Strength Antenna Calculations The following is a list of various antenna calculations should you find it necessary to con vert from one to another Conversion of signal levels from W to V in a 50 ohm system where P power in Watts V voltage level in Volts R resistance in Ohms Note that 1 mW 10 W and luV 105v For power in dBm and voltage in dB uV VaB uV dBm 107 Power density to field strength An alternate measure of field strength to electric field is power density E fd 7 where E field strength in V m Power density in W m Power density at a point _ Gt Anr2 5 19 Chapter 5 Field Measurements In the far field where electric and magnetic fields are related by the impedance of free space pow
53. Step 14 Press the MARKER key and select the M1 soft key Step 15 Press the MARKER TO PEAK soft key to set marker 1 to the peak signal fundamental frequency Note that marker M1 will automatically be turned on Chapter 4 Measurement Fundamentals Step 16 Press the MARKER key and select the M2 soft key Step 17 Press the EDIT soft key to turn Marker M2 ON and use Up down arrow key to place Marker M2 at the center of the second harmonic Press ENTER to set the marker position Step 18 Press the DELTA M2 M1 soft key This will provide frequency and amplitude information with respect to marker M1 Step 19 Press the MARKER key and select the M3 soft key Step 20 Press the EDIT soft key to turn Marker M3 ON and use the Up down arrow key to place Marker M3 at the center of the third harmonic Step 21 Press the DELTA M3 M1 soft key This will provide frequency and amplitude information with respect to marker M1 Figure 4 6 shows the distortion characteristics of the signal source just measured Marker 1 indicates the fundamental frequency Marker 2 shows that the second order distortion of the source is 46 24 dB below the carrier Marker 3 shows that the third order harmonic is 48 44 dB below the fundamental frequency TRACE A REF LVL 20 0 dBm RBW 100kHz VBW 3 kHz 10dB DIV ATTEN SWPCont RFin 500 Pos Peak SWP TIME 1745 START 1 000MHz STOP 50 000MHz ALL 1 9 41 dBm 9 964MHz a3 48 44 dB
54. The MS2711B will display the measurement results in the message area Channel Power is a constant measurement Once it is turned on it will remain on until it is turned off by pressing the MEASURE ON OFF key again When the channel power mea surement is on a CH PWR icon appears to the left of the display Channel power is calcu lated at the end of a sweep An hourglass is displayed as the calculations are performed NOTE The channel span must be set equal to or larger than the integration bandwidth If not MS2711B will set the channel span equal to the integration bandwidth When the integration bandwidth and channel span are set to the same value the MS2711B uses all the sampling points for integration providing the most accurate measurements The ratio of the integration bandwidth to channel span is kept constant When the integration bandwidth is changed the ratio remains the same The ratio can be changed by changing the channel span For example when the integration bandwidth is doubled the MS2711B will double the channel span 5 8 Chapter 5 Field Measurements Adjacent Channel Power Ratio Another common transmitter measurement is that of adjacent channel leakage power This is defined as the ratio of the amount of leakage power in an adjacent channel to the total transmitted power in the main channel This measurement can be used to replace the tradi tional two tone intermodulation distortion IMD test for syst
55. ace B menu Select the VIEW B soft key to view the traces simultaneously NOTE Trace A is displayed as a black trace and Trace B is displayed as a gray trace Some adjustment of the display contrast see page 3 2 may be required for optimal viewing Figure 4 12 shows the resulting display Note that the title bar shows both traces TRACE A B REF LVL 0 0 dBm RBW 30 kHz VBW 300 Hz YEW 10dB DIV ATTEN SWP Cont RFin Pos Peak SWP TIME Po Po d 4815 CENTER 900 000MHz SPAN 20 000MHz TRACE B PREVIOUS A TRACE Figure 4 12 Trace Overlay NOTE Two traces cannot be overlaid if they have different resolution bandwidths different frequency ranges or different detection algorithms 4 16 Chapter 5 Field Measurements Introduction This chapter provides examples of various field measurements Occupied Bandwidth In Band Spurious Emissions fJ Channel Power Field Strength CJ Adjacent Channel Power Ratio AM FM Demodulation Out of Band Spurious Emissions Power Monitor Occupied Bandwidth A common measurement performed on radio transmitters is that of occupied bandwidth OBW This measurement calculates the bandwidth containing the total integrated power occupied in a given signal bandwidth There are two different methods of calculation de pending on the technique used to modulate the carrier Percent of Power Method The occupied frequency bandwidth is calculat
56. alculation of field strength during radiated emissions measure ments and relates the value of the incident electric or electromagnetic field to the voltage at the output of the antenna For an electric field antenna this is expressed as E AF E VI Where AF Antenna Factor m E Hlectric field in Volts per meter Voltage at the antenna terminals in Volts Chapter 8 Software Tools It also can be shown that in a 50 ohm system Where Gr the gain of the receiving antenna in dB A wave length in meters Antennas used for radiated emissions testing are individually calibrated the antenna factors can be measured directly at all appropriate distances The calibrations produce values that are defined as the equivalent free space antenna factor The calibration procedure corrects for the presence of the reflection of the antenna in the ground plane giving the value that would be measured if the antenna were in free space Antenna Editor Step 1 Once Software Tools has been opened select Antenna Editor from the Tools menu on the tool bar A pop up box will appear on the screen of the PC Step 2 Click on Edit Antenna to enter an antenna name description frequencies and antenna factors Enter the frequencies in ascending order starting with lowest frequency first A maximum of 60 antenna factors may be entered Use the tab key on the keyboard to move between entries If the antenna gain in dBi is known th
57. and press EDIT when done Chapter 4 Measurement Fundamentals Figure 4 11 shows the resulting display The mask created in this example serves as an up per bound on the measurement results Any of the data points appearing above the line indi cates a failed measurement Figure 4 11 Creating a Spectral Mask 4 15 Chapter 4 Measurement Fundamentals Example 7 Trace Overlay The MS2711B HHSA can be used to compare frequency spectrums Example Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data key pad When the key is pressed a Recall Trace selection box appears on the dis play Select setup location 0 to recall the factory preset state Connect a signal source to the Anritsu HHSA spectrum analyzer Set the signal source frequency to 900 MHz and the signal level to 20 dBm Set the center frequency at 900 MEZ resolution bandwidth to 30 KHz video bandwidth to 300 Hz and the span to 20 MHz Press the TRACE key Select the A B soft key to save the current runtime trace to the Trace B buffer Set the input frequency to 901 MHz and the signal level to 20 dB Press the TRACE B soft key to go to the Tr
58. and use the Up Down arrow key to select Spectrum Ana lyzer mode Press ENTER to set the mode Making a Measurement Step 1 Connect the input cable to the RF In test port Step 2 Locate and display the signal s of interest by selecting the desired frequency span and amplitude value Selecting the Frequency Step 1 Press the FREQ SPAN key to display the Frequency menu Step 2 To enter a center frequency select the CENTER soft key and enter the desired center frequency on the keypad Select the GHz MHz kHz or Hz softkey to accept the center frequency input or To set a specific frequency band select the START soft key and enter the de sired start frequency on the keypad Select the GHz MHz kHz or Hz softkey to accept the start frequency input Then select the STOP soft key and enter the desired stop frequency on the keypad Select the GHz MHz kHz or Hz softkey to accept the stop frequency input Selecting the Span Step 1 Press the FREQ SPAN key to display the Frequency menu Step 2 Press the SPAN soft key to display the Span menu Step 3 To set a specific span enter the desired span on the keypad and select the GHz MHz kHz or Hz soft key to accept the input or For a full span select the FULL soft key Selecting FULL will override the START and STOP frequencies set above or For a single frequency measurement select the ZERO soft key NOTE To quickly move the span value up or down select the SPAN UP 1 2 5
59. annel Power Measurement 5 3 GSM Channel Power Measurement leen 5 5 AMPS Channel Power 5 7 Adjacent Channel Power 5 9 Adjacent Channel Power Measurement 5 9 GSM Adjacent Channel Power Measurement 5 11 AMPS TDMA Adjacent Channel Power Measurement 5 13 Out of Band Spurious Emissions leen 5 14 Out of Band Spurious Emission Measurement 5 14 In band Out of Channel Measurements 5 16 In band Spurious Measurement 5 16 Field 2 ae 5 18 Making Power Measurements with the Power Monitor Option 5 5 2 leo Boab el A S Ih Ro ee chee ee T 5 20 Dynamic Attenuation Control ee eee 5 22 Chapter 6 Preamplifier Descriptions lt 6 ug a EE Ried hye eye SG ETS 6 1 Preamplifier Operation 6 1 Preamplifier Measurement 6 2 Chapter 7 Tracking Generator Description i 1a RS e URN TR ren eS os 7 1 Tracking Generator 7 1 Chapter 8 Software Tools Introduction ws ned whos ER aa ee a SS 8 1 Features UR RES SOS VE e Teu oie 8 1 System 8 1 Installation i 4b x EIE SERE RR Ie e 8 2 Using Software
60. ars on the display Select setup location 0 to recall the factory preset state Using the test port extension cables and 30 dB attenuator connect the signal source to the input of the attenuator and connect the output of the attenuator to the RF In test port of the MS2711B Press the AMPLITUDE key and select the REF LEVEL soft key to set the ref erence level to 0 dBm Press the SCALE soft key and set the scale to 10 dB division Press the ATTEN soft key followed by the AUTO soft key to set the attenuation to AUTO Press the BW SWEEP key and select the RBW and VBW soft keys to set the resolution bandwidth to 1 MHz and the video bandwidth to 300 KHz Press the MAX HOLD soft key to set max hold to ON as indicated in the lower left of the display Press the MEAS key and press the CHANNEL POWER soft key Chapter 5 Field Measurements Step 9 Select the CENTER FREQ soft key and set the center frequency of the CDMA signal to 835 MHz as the center frequency of the cellular signal Step 10 Select the INT BW soft key and enter 20 MHz for the integration bandwidth Step 11 Select the CHANNEL SPAN soft key and enter 20 MHz as the channel span or set the channel span to a value appropriate for the particular application Step 12 Make the measurement by pressing the MEASURE ON OFF soft key The de tection method is automatically changed to Average Solid vertical lines are drawn on the display to indicate the integration bandwidth
61. ces to the spectrum analyzer input through a signal combiner split ter and set the frequency of one source to 900 0 MHz and the other source to 900 030 MHz Set both sources to the same amplitude preferably 20 dBm On the MS2711B HHSA Step 1 Set attenuator coupling to AUTO Step 2 Set the Reference Level to 10 dBm Step 3 Set the scale to 10 dB div Step 4 Set the span to 300 kHz and the center frequency to 900 MHz Step 5 Set the resolution bandwidth to 30 kHz and the video bandwidth to 1 kHz 4 3 Chapter 4 Measurement Fundamentals It should be difficult to discern the presence of two signals Figure 4 1 shows the results of the example using a signal combiner splitter with a loss of 6 dB TRACE A REFLVL 100dBm RBW 30kHz VBW 1 kHz RBW 10dB DIV ATTEN SWP Cont RFin 500 Pos Peak SWP TIME 832 ms MAX HOLD OFF SWEEP AVERAGE OFF DETECTION ALG POS PEAK Figure 4 1 Measurement of Two Signals Having Equal Amplitudes RBW 30 kHz Step 6 Change the resolution bandwidth to 10 kHz Figure 4 2 shows the results after changing the RBW using a signal combiner splitter with a loss of 6 dB TRACE A REF LVL 10 0 dBm RBW 10kHz VBW t khz AUTO 10dB DIV ATTEN SWP Cont RFin 502 AE RBW MANUAL Figure 4 2 Measurement of Two Signals Having Equal Amplitudes RBW 10 kHz Remember the resolution bandwidth must be equal to or less than the frequency separat
62. coupled automatically to the resolution bandwidth AUTO or manually adjustable MANUAL using the Up down arrow key NOTE In TG Fast Tune mode RBW and VBW are optimized by the HHSA and cannot be changed by the user Option 20 only MAX HOLD DETECTION AVERAGE 1 25 Displays and holds the maximum responses of the input signal over multi ple sweeps Accesses a menu of detector modes including POSITIVE PEAK detec tion AVERAGE detection and NEGATIVE PEAK detection POSITIVE The HHSA reads and displays the highest measured point PEAK AVERAGE The HHSA averages the measured data and displays the av erage value NEGATIVE The HHSA reads and displays the lowest measured data PEAK Sets the number of the sweeps to be averaged The number of the sweeps can be adjusted from 1 to 25 using the Up down arrow key or entered di rectly with the keypad number keys Press ENTER to accept the selected value This feature uses a measurement routine that averages samples over a user defined number of successive sweeps The averaging is done on point by point basis Each displayed point reflects the current measure ment associated with that point averaged with the measurements associ ated with that point from previous sweeps This feature can be used to minimize the impact of transients on the displayed signal and noise Chapter 3 Key Functions Trace Menu Pressing the TRACE key activates a menu of trace related
63. ction us ing the soft keys Available choices from this menu include CENTER FREQUENCY SPAN START frequency and STOP frequency Soft key selection of any of these functions brings up a set of choices or selec tions specific to that procedure Activates a menu of amplitude related functions including REF LEVEL SCALE ATTEN REF LEVEL OFFSET and UNITS Soft key selec tion of any of these functions brings up a set of choices or selections spe cific to that procedure Activates a menu of bandwidth and sweep related functions including RBW VBW MAX HOLD AVERAGE and DETECTION Soft key se lection of any of these functions brings up a set of choices or selections specific to that procedure Chapter 3 Key Functions Keypad Hard Keys The following keypad hard key functions are printed in black on the keypad keys 0 9 ESCAPE CLEAR UP DOWN ARROWS ENTER ON OFF SYS These keys are used to enter numerical data as required to setup or per form measurements The plus minus key is used to enter positive or negative values as required to setup or perform measurements The decimal point is used to enter decimal values as required to setup or perform measurements Exits the present operation or clears the display If a parameter is being edited pressing this key will clear the value currently being entered and restore the last valid entry Pressing this key again will close the parame ter During normal sweeping
64. cu lated at the end of a sweep An hourglass is displayed as the calculations are performed NOTE The channel span must be set equal to or larger than the integration bandwiath bandwidth same value the MS2711B uses all the sampling points for integration providing the most accurate measurements The ratio of the integration bandwidth to channel span is kept constant When the integration bandwidth is changed the ratio remains the same The ratio can be changed by changing the channel If not MS2711B will set the channel span equal to the integration When the integration bandwidth and channel span are set to the 5 4 Chapter 5 Field Measurements span For example when the integration bandwidth is doubled the MS2711B will double the channel span GSM Channel Power Measurement Global Systems for Mobile GSM communication is a globally accepted standard for digi tal cellular communication There are two frequency bands allocated to GSM mobile phones one at 900 MHz and the other at 1800 MHz GSM uses a combination of Fre quency Division Multiple Access FDMA and Time Division Multiple Access TDMA Within each band are approximately one hundred available carrier frequencies on 200 kHz spacing FDMA and each carrier is broken up into time slots so as to support eight sepa rate conversations TDMA Each channel has an uplink and a downlink 80 MHz apart GSM uses the Gaussian Minimum Shift Keying GMSK mod
65. d a mild cleaning solution CAUTION To avoid damaging the display or case do not use solvents or abra sive cleaners Clean the RF connectors and center pins with a cotton swab dampened with denatured alco hol Visually inspect the connectors The fingers of the N f connectors and the pins of the N m connectors should be unbroken and uniform in appearance If you are unsure whether the connectors are good gauge the connectors to confirm that their dimensions are correct Visually inspect the test port cable s The test port cable should be uniform in appearance not stretched kinked dented or broken Calibration The Anritsu HHSA loads factory calibration data during start up eliminating the need for daily calibration checks Annual Calibration Although the Anritsu HHSA does not require daily field calibration Anritsu recommends an annual calibration and performance verification by local Anritsu service centers Anritsu service centers are listed in Table 1 3 beginning on the following page ESD Cautions The MS2711B like other high performance instruments is susceptible to ESD damage Very often coaxial cables and antennas build up a static charge which if allowed to dis charge by connecting to the MS2711B may damage the MS2711B input circuitry MS2711B operators should be aware of the potential for ESD damage and take all neces sary precautions Operators should exercise practices outlined within industr
66. d set the center frequency of the CDMA signal to 850 MHz Select the INT BW soft key and enter 1 23 MHz for the integration bandwidth Select the CHANNEL SPAN soft key and set the span to 2 5 MHz NOTE The integration bandwidth is defined as the frequency span in which the spectrum analyzer integrates measured power readings while the channel span is the frequency range of the analyzer sweeps Step 11 Figure 5 2 Make the measurement by pressing the MEASURE ON OFF soft key The de tection method is automatically changed to Average Solid vertical lines are drawn on the display to indicate the integration bandwidth The MS2711B will display the measurement results in the message area shows the results of the measurement using a CDMA signal generator with an output power level of 25 dBm TRACE A REFLVL 100dBm RBW 10kHz VBW 30 kHz CENTER 10 0 NT ATTEN BW 20dB SWP Cont MP T i 500 Wi EN CHPWR pom Avg Det SWP TME i i i 982ms CENTER 850 000MHz2 SPAN 2 500MHz WT BW 1 230 000 MHz CH PWR 23 90 dBm CH SPAN 2 500 000 MHz DENSITY 84 80 dBm Hz BACK Figure 5 2 CDMA Channel Power Measurement Channel power is a constant measurement Once it is turned on it will remain on until it is turned off by pressing the MEASURE ON OFF key again When the channel power mea surement is on a CH PWR icon appears to the left of the display Channel power is cal
67. e carrier ser vice providers and network operators where the trace data must be visible and legible for documentation The line density of the trace can be set to Normal Thin Line or Thick Line to make the data appear easily when copies are made Plot Footer allows selection of information to be displayed in the trace display Selections are Time Date Q Impedance Q Model and Serial Number Measurements Q Bias Tee DTF Parameters Q Date Format mm dd yyy dd mm yyyy yyyy mm dd NOTE While all possible selections are displayed some of these selections ap ply only to specific models of Anritsu hand held instruments Trace Overlay or Plot Overlay Trace Overlay is activated by the Mouse Function icon Single click on the Mouse Function icon to toggle Toggling this icon switches the mouse function between Marker Limit Zoom and Plot Overlaying To overlay two plots click and drag from one plot to the other plot The final display will be the two plots superimposed on one another A maximum of two traces can be overlaid on a third trace Refer to the Software Tools HELP function for more information on the steps necessary to perform a trace overlay 8 5 Chapter 8 Software Tools Saving Traces Once the plots are captured to the PC they can be saved as individual files or as a block of files to a database Saving a Plot as a Windows Metafile or to a Spreadsheet Plots can be saved as a Window
68. ed as the bandwidth containing the specified percentage of the transmitted power XdB Down Method The occupied frequency bandwidth is defined as the bandwidth between the upper and lower frequency points at which the signal level is XdB below the peak carrier level Required Equipment O MS2711B Hand Held Spectrum Analyzer 30 dB 50 watt Bi Directional DC 18 GHz N m N f Attenuator Anritsu 42N50A 30 Test Port extension cable Anritsu I5NNF50 1 5C Procedure Step 1 Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Step 2 Using the test port extension cable and 30 dB 50 watt Bi directional attenuator connect the MS2711B to appropriate transmit test port 5 1 Chapter 5 Field Measurements Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Figure 5 1 signal If the MS2711B is not currently in Spectrum Analyzer mode press the MODE key scroll to SPECTRUM ANALYZER mode and press ENTER Select the CENTER soft key and enter the center frequency of the measurement using the keypad Select the GHz MHz kHz or Hz softkey to accept the cent
69. ed by changing the channel span For example when the integration bandwidth is doubled the MS2711B will double the channel span AMPS Channel Power Measurement The MS2711B can be used to test Advanced Mobile Phone System AMPS base stations AMPS base stations for cellular telephone systems are continuous wave CW FM voice transceivers with system control functionality The energy of the AMPS signal is repre sented by multiple bits of data spread over a wide frequency range AMPS allocates frequency ranges within the 800 and 900 MHz spectrum to cellular tele phone Each service provider can use half of the 825 845 MHz range for receiving signals from cellular phones and half the 870 890 MHz range for transmitting to cellular phones The bands are divided into 30 kHz channels with 12 kHz maximum frequency deviation Required Equipment Procedure Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 MS2711B Hand Held Spectrum Analyzer HHSA 30 50 Watt bi directional DC 18 GHz N m N f Attenuator Anritsu 42N50A 30 Test Port extension cable Anritsu 15NNF50 1 5C Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appe
70. ed choices in the active function block Use the corresponding softkey to select the desired function explained below Use the keypad or Up Down arrow key to change or enter values shown in the mes sage area Complete the entry by pressing the appropriate softkey frequency designation CENTER Activates the center frequency function and sets the Anritsu HHSA to the center frequency mode A specific center frequency can be entered by us ing the keypad or Up Down arrow key Select the GHz MHz kHz or Hz softkey to accept the center frequency input SPAN Pressing the SPAN soft key activates a menu of span related choices in the active function block EDIT Allows direct entry of a specific frequency span Use the keypad or Up Down arrow key to select the span of choice and complete the entry by pressing the GHz MHz kHz or Hz softkey FULL Sets the Anritsu HHSA to its maximum frequency span 2 9999 GHz ZERO Sets the span to 0 Hz Chapter 3 Key Functions START STOP TG FREQ OFFSET Amplitude Menu SPAN Activates the span function so that the span may be in UP creased quickly in a 1 2 5 sequence 1 2 5 SPAN Activates the span function so that the span may be reduced DOWN quickly in a 1 2 5 sequence 1 2 5 BACK Returns to the previous menu level Activates the start frequency and sets the Anritsu HHSA in the Start Stop mode Enter the desired start frequency and complete the entry by press ing the GHz MHz kHz or Hz
71. eep once and hold until activated again by pressing the ENTER key The currently selected sweep mode appears on the LCD Single sweep mode can be used to conserve battery power Prints the current display to the selected printer Refer to page 2 20 for in formation on selecting and setting up a printer 3 3 Chapter 3 Key Functions Soft Keys Soft keys are the six unlabeled keys see Figure 2 2 page 2 2 that perform different func tions depending on the currently selected soft key menu The available selections for the softkeys are displayed in the active function block The following paragraphs relate the menus displayed in the active function block when the various function hard keys or keypad hard keys are selected Mode Menu Pressing the MODE key activates a menu of mode related choices Use the Up Down ar row key to highlight the desired mode and press ENTER to select The selections available on this menu will vary depending upon which options are installed in the MS2711B SPECTRUM Selects Spectrum Analyzer mode of operation ANALYZER POWER Selects Power Monitor mode of operation MONITOR TRACKING Selects Tracking Generator mode of operation GENERATOR TG FAST Selects Fast Tune Tracking Generator mode of operation This mode TUNE optimizes the RBW VBW parameters and number of frequency points for fastest sweep speed Frequency Span Menu 3 4 Pressing the FREQ SPAN key activates a menu of frequency relat
72. efined separately as five upper limit segments and five lower limit segments This allows the definition of a spectral mask A limit segment is defined by its end points That is starting frequency starting amplitude ending frequency and ending amplitude This procedure describes the setting of two upper limit segments The steps can be carried over to the other upper limit segments as well as to the lower limit segments Step 1 Press the LIMIT key Step 2 Press the MULTIPLE UPPER LIMITS soft key Step 3 Press the SEGMENT 1 soft key Step 4 Press the EDIT soft key The status window will display the value of the seg ment endpoints ST FREQ ST LIMIT END FREQ END LIMIT The current parameter is highlighted When you first press the EDIT soft key the value of the ST FREQ parameter is highlighted Step 5 Either enter the value using the numeric keypad or scroll the limit line using the UP DOWN arrow key 2 12 Chapter 2 Quick Start Guide Step 6 When editing the start frequency or end frequency the unit terminator keys GHz MHz kHz Hz will appear on the soft keys Press the appropriate termi nator key to continue The ST LIMIT parameter will now be highlighted Step 7 Either enter the value using the numeric keypad or scroll the limit line using the UP DOWN arrow key Step 8 Press the ENTER key to continue Step 9 Repeat Steps 5 and 6 for the end frequency Step 10 Repeat Step 7 for the end limit Step 11 Pre
73. em non linear behavior The result of an ACPR measurement can be expressed either as a power ratio or a power density In order to calculate the upper and lower adjacent channel values the MS2711B re quires the specification of four parameters Main Channel Center Frequency Measurement Channel Bandwidth Adjacent Channel Bandwidth Channel Spacing Adjacent Channel Power Measurement Required Equipment Procedure Step 1 Step 2 Step 3 Step 4 Step 5 MS2711B Hand Held Spectrum Analyzer 30 dB 50 watt Bi Directional DC 18 GHz N m N f Attenuator Anritsu 42N50A 30 Test Port extension cable Anritsu 15NNF50 1 5C Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Using the test port extension cable and 30 dB 50 watt Bi directional attenuator connect the MS2711B to appropriate transmit test port Press the AMPLITUDE key and select the REF LEVEL soft key to set the ap propriate reference level See the table below for recommended settings for CW and CDMA signals Select the ATTEN soft key to set the input attenuation level See the
74. en frequency and gain can be entered and the antenna factor will be automatically calculated when the tab key is pressed to move from Gain to Antenna Factor NOTE Only one input of frequency and antenna factor is allowed per row Mul tiple antenna factors for a single antenna must be entered individually For ex ample an antenna having an antenna factor of 5 from 2 0 to 2 25 GHz and an antenna factor of 4 from 2 25 to 2 5 GHz should be entered as follows Frequency MHz Antenna Factor 2000 5 2251 4 2500 4 If necessary an antenna factor of zero 0 may be entered Step 3 Select Save from the File menu to save the antenna factors to the hard disk Chapter 8 Software Tools Uploading Antenna Factors 10 available antennas are transferred to the instrument at the same time To modify only a single antenna in the instrument first download the current antennas see below then modify the appropriate antenna then re upload the antennas to the instrument To upload antenna information from Software Tools to the CUSTOM list in the HHSA Step 1 Step 2 Step 3 Connect the RS232 cable between the PC and the instrument Click on the Upload button on the tool bar or select Upload from the Tools menu It is important to note that the instrument must sweep very quickly dur ing the data transfer at least every 5 seconds or the Software Tools program may time out To improve the chances of a s
75. enna 50 Ohm SMA m 2 4 to 2 5 GHz Portable Antenna 50 Ohm SMA m 806 869 MHz Portable Antenna 50 Ohm SMA m 902 960 MHz Headset m m m re m Chapter 1 General Information Performance Specifications Performance specifications are provided in Table 1 2 Unless otherwise noted specified values are obtained after a five minute warmup period at a constant ambient temperature The typical values are provided for reference and are not guaranteed Table 1 2 Performance Specifications 1 of 3 Description Value Frequency Frequency Range Frequency Reference Aging Accuracy Frequency Span Sweep Time SSB Phase Noise Spurious Responses Input Related Spurious Residual Responses Resolution Bandwidth Selections Accuracy Video Bandwidth Selection Amplitude Measurement Range Maximum Input Level Displayed Average Noise Level Dynamic Range Total Level Accuracy Amplitude Units Log Scale Mode Display Range Attenuator 100 kHz to 3 0 GHz 1 ppm yr 2 ppm 1 kHz to 3 GHz in 1 2 5 step selections in auto mode plus zero span gt 6 5 seconds full span 510 ms zero span 75 dBc Hz 30 kHz offset x 45 dBc 90 dBm 2 500 kHz 10 kHz 30 kHz 100 kHz and 1 MHz 20 typical 100 Hz to 300 kHz in 1 3 sequence 20 dBm to 95 dBm without options 23 dBm without damage x50 VDC lt 115 dBm 21 MHz typical with preamplifier on lt
76. ent of the selection of other units Selection of mW READOUT causes the Marker values and Channel power measure ment results to be displayed in mW Sets the reference level offset This feature allows measurement of high gain devices in combination with an attenuator It is used to offset the viewed reference level to compensate for an external attenuator For example to measure a high gain amplifier with an output of 70 dBm an external 50 dB attenuator must be inserted between the HHSA and the device To compensate displayed measurements for this external attenu ator set the reference level offset to 50 dB When the reference level offset is a value other than 0 the displayed and measured values will automatically have the offset value subtracted from the measurement thus providing a direct readout of the actual measure ment See the IMPORTANT notice at the top of this page concerning in put considerations Sets the output power level of the tracking generator in TG or TG Fast Tune mode from 0 0 dBm to 60 dBm in 0 1 dB steps Chapter 3 Key Functions Bandwidth Sweep Menu Pressing BW SWEEP activates a menu of bandwidth and sweep related functions Use the corresponding softkey to select the desired function RBW VBW Sets the resolution bandwidth so that it is either coupled automatically to the span AUTO or manually adjustable MANUAL using the Up down arrow key Sets the video bandwidth so that it is either
77. er frequency input Press the AMPLITUDE key and select the REF LEVEL soft key to set the ap propriate reference level See the table below for recommended settings for CW and CDMA signals Select the ATTEN soft key to set the input attenuation level See the table be low for recommended settings for CW and CDMA signals Press the BW SWEEP key and select the RBW and VBW soft keys to set the resolution bandwidth and video bandwidth See the table below for recom mended settings for CW and CDMA signals CW IS 95 CDMA Reference Level 15 dBm 10 dBm Input Attenuation Level Auto Auto Resolution Bandwidth Auto 10 kHz Video Bandwidth Auto 30 kHz Press the MEAS key and press the OBW soft key Select the measurement method dB Down or of Power by pressing the METHOD soft key The cur rently selected method is shown in the lower left of the display Press the dBc or soft keys to adjust the settings as appropriate Press the MEASURE ON OFF soft key to initiate the measurement OBW will appear to the left of the graph when the occupied bandwidth measurement is on shows the occupied bandwidth results using the of power method on a CDMA TRACE A REF LVL 10 0 dBm RBW 10kHz VBW 30 kHz 10dB DIV ATTEN 40dB SWP Cont 500 dBc OBW Pos Peak MEASURE ON OFF SWP TIME 897 ms START 849 000MHz STOP 851 000MHz METHOD of Power Meas Occ BW 1 250 MHz BACK of Power 99 96 Mea
78. er density in W m power transmitted in Watts G gain of transmitting antenna distance from the antenna in meters Making Power Measurements with the Power Monitor Option 5 Power measurement is accomplished using a broadband 1 MHz to 3000 MHz RF detector P N 5400 71N50 The power monitor displays the measured power in dBm or Watts Entering Power Monitor Mode Step 1 Press the MODE key Step 2 Use the Up Down arrow key to scroll to POWER MONITOR mode and press ENTER Zeroing the Power Monitor Step 1 Connect the RF detector to the DUT Step 2 With no power applied to the DUT press the ZERO soft key from the Power menu Wait a few seconds while the Anritsu HHSA accumulates samples of the quiescent power level When complete ZERO ADJ ON is displayed in the mes sage area Measuring High Input Power Levels Step 1 Insert an attenuator between the DUT and the RF detector sufficient to insure that the input power to the MS2711B is no greater than 20 dBm Refer to Fig ure 5 10 Step 2 Press the OFFSET soft key Step 3 Enter the attenuation in dB using the keypad to match the value of the attenu ator Press ENTER to complete the entry The message area will show OFFSET is ON along with the entered value in dB Displaying Power in dBm and Watts Press the UNITS soft key to display power in Watts Displaying Relative Power Step 1 With the desired base power level input to the Anritsu HHSA press the REL soft
79. erwrite the old Recall Setup Menu Pressing RECALL SETUP on the data keypad recalls a previously saved setup from mem ory location 1 through 10 When the key is pressed a Recall Trace selection box appears on the display Select a setup using the Up Down arrow key and press the ENTER key to im plement Setup location O recalls the factory preset state Limit Menu Pressing LIMIT on the data keypad activates a menu of limit related functions Use the cor responding softkey to select the desired limit function Then use the Up Down arrow key to change its value which is displayed in the message area at the bottom of the display SINGLE Sets a single limit value in dBm Menu choices are LIMIT ON OFF Turns the single limit function on or off EDIT Allows entry of the limit amplitude using the keypad or up down arrow key Press ENTER to accept the entered value BEEP AT LEVEL Beep if data is above the limit line to specify an upper limit beep if data is below the limit line to specify a lower limit BACK Return to the previous menu MULTIPLE Sets multiple user defined upper limits and can be used to create an upper UPPER limit mask for quick pass fail measurements An upper limit will result in LIMITS a failure when the data falls above the limit line Menu choices are SEGMENT 1 View edit the upper limit segment 1 SEGMENT 2 View edit the upper limit segment 2 SEGMENT 3 View edit the upper limit segment 3 SEGMENT 4 View ed
80. f Adapter DC to 1 3 GHz 50 Ohm N m BNC f Precision Adapter DC to 18 GHz 50 Ohm N m N m Precision Adapter DC to 18 GHz 50 Ohm N f N f RF SWR Bridge 10 2500 MHz 50 Ohm N m RF SWR Bridge 10 2500 MHz 50 Ohm N f Band Pass Filter 800 MHz band 806 869 MHz RL 1 7 dB N m SMA f Band Pass Filter 900 MHz band 902 960 MHz RL 1 7 dB N m SMA f Band Pass Filter 1900 MHz band 1 85 1 99 GHz RL 1 8 dB N m SMA f Band Pass Filter 2400 MHz band 2 4 2 5 GHz RL 1 9 dB N m SMA f Matching Pad converts 75 Ohms to 50 Ohms 7 5 dB loss S S Chapter 1 General Information Table 1 1 Optional Accessories continued Part Number Description 48258 40 115 806 62 800 441 551 1691 760 215A 633 27 2300 347 10580 00074 10580 00071 10580 00072 2000 1029 2000 1030 2000 1031 2000 1032 2000 1200 2000 1035 70 28 Spare Soft Carrying Case Spare AC DC Adapter Spare Automotive Cigarette Lighter 12 Volt DC adapter Spare Serial Interface Cable USB to Serial Adapter Transit Case for Anritsu Hand Held Spectrum Analyzer Rechargeable Battery NiMH Anritsu Hand Held Spectrum Analyzer Software Tools Anritsu HHSA User s Guide Model MS2711B Anritsu HHSA Programming Manual Model MS2711B Anritsu HHSA Maintenance Manual Model MS2711B Battery Charger NiMH with Universal Power Supply Portable Antenna 50 Ohm SMA m 1 71 to 1 88 GHz Portable Antenna 50 Ohm SMA m 1 85 to 1 99 GHz Portable Ant
81. f the through line only the characteristics of the DUT will be included in the measurement results Marker values will display the normalized data Use the REFERENCE LEVEL OFFSET to adjust the position of the data on the graph If the attenuation is coupled to the reference level and the reference level is changed the at tenuation change will affect the noise floor and possibly the result When normalization is enabled the reference level offset is not included in the marker values and is used only for the display 7 3 Chapter 7 Tracking Generator Figure 7 2 shows the results of normalization on the setup from Figure 7 1 Since the refer ence level is 0 the reference level offset remains 0 The marker reads the normalized value Pos Peak SWP TIME H H H i i i i i 1967s START 10 000MHz STOP 3 000GHz ALL 1 0 00 dBm 1 980GHz OFF M2 OFF Figure 7 2 Results of Normalization NOTES Normalization should be performed whenever the frequency range tracking generator output level RBW attenuation or the ambient temperature have changed Normalization will not normalize an already normalized trace It will only normal ize measured data When the trace is normalized adjust the display using the reference level OFF SET under the AMPLITUDE menu not the reference level Changing the reference level itself will cause the coupled attenuation to change which will af fect the noise floo
82. ferred from the instrument to the PC A sepa rate database can be created for each cellular site The site name can be used as the database name Step 1 Select the File menu and select Database Step 2 Open an existing database or create a new database with a descriptive filename that represents the site name Once the database has been created files can be saved and site information can be added such as Plot Description Date Time Operator record trace number and session description Transmitter type etc Individual plots will be labeled with the Database Site Name Each record has its own plot description and measurement type Printing One to multiple plots per page can be set up under the print format in Software Tools Ori entation of how the plots are printed on the page can be changed from vertical to horizontal To print a single trace or multiple traces Step 1 Click on the printer icon or select the File menu and select Print Step 2 In the Print dialog box click on the Setup button to select the paper source and orientation Step 3 In the Print dialog box click on the appropriate Print Style to define the num ber of plots per page and the plot layout Entering Antenna Factors in Software Tools NOTE Antenna Factors are available only on Anritsu Hand Held Spectrum An alyzers The Antenna Factor AF is a fundamental parameter of an antenna used in field measure ments AF is used in the c
83. g the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Press the MODE key and use the Up Down arrow key to select TRACKING GENERATOR Press ENTER to confirm the selection Press the FREQ SPAN key and select the START and STOP soft keys to set the start and stop frequencies Set the start frequency to 806 MEZ and stop fre quency to 960 MHz Press the AMPLITUDE key and set the REFERENCE LEVEL to 0 dBm Set the SCALE to 10 dB div Set the TG OUTPUT LEVEL to 0 dBm Press the BW SWEEP key and select the RBW and VBW soft keys to set the resolution bandwidth and the video bandwidth Set the resolution bandwidth to 1 MHz and the video bandwidth to 300 kHz Normalize the test setup to remove the effects of the components if necessary see page 7 3 Connect the RF Out port of the MS2711B to Antenna 1 and connect the RF In port of the MS2711B to Antenna 2 The resulting sweep is the isolation across the specified frequency range Press the MARKER key and set markers M1 830 MHz and M2 890 MHz to identify the isolation level at those frequencies If necessary adjust the reference level or reference level offset if normalized and scale to improve the display Chapter 7 Tracking Generator Figure 7 4 shows an isolation of 223 dBm at 830 MHz and an isolation of 2
84. g the signal peak at the reference level provides the best measurement ac curacy The following steps will adjust the signal peak to the reference level Figure 2 10 Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Press the AMPLITUDE key Press the ATTEN soft key and the AUTO soft key to select automatic attenua tion Press the BACK soft key Press the UNITS soft key and select dBm as the amplitude units Press the BACK soft key and then the REF LEVEL soft key Press the key and 10 on the keypad and then press ENTER to set the refer ence level to 10 dBm Press the SCALE soft key and use the key pad or up down arrow key to select a scale of 10 dB division Press the ENTER key to set the scale Observe that the display resembles that shown in Figure 2 10 TRACEA REF LVL 10 0 dBm RBW 4 MHz VBW 1 REF T 10dB DIV ATTEN SCALE 20dB SWP Cont RFIn 502 ATTEN Pos Peak PIS REF LEVEL OFFSET SWP TME REF LVL 10 0 dBm ATTEN 20 dB SCALE 10 dB UNITS dBm Figure 2 10 Reference Level set at 10 dBm 2 18 Chapter 2 Quick Start Guide Activate the Marker The marker reads both the frequency and the amplitude and it displays these values in the message area at the bottom of the display In this case the marker will read 900 MHz and 10 00 dBm as shown in Figure 2 11 Step 1 Press the MARKER key Step 2 Press the M1 soft key Step 3 Press the MARKER PEAK soft key to
85. h signal levels that are between 60 and 70 dBm If the input signal becomes larger the preamp may saturate causing the MS2711B to add attenuation When the attenuation is at 50 dB the preamp will turn off This happens with signal levels that are between 30 and 20 dBm When dynamic attenuation is on the MS2711B is in control of the reference level attenua tion and preamp Manual settings will be overwritten based on the input signal To manu ally control these parameters set the attenuation to either AUTO or MANUAL The following is an example identifying interference in a PCS 900 MHz band with the aid of the preamplifier and dynamic attenuation control NOTE Dynamic attenuation cannot overcome the zero beat Make sure that it is not visible in the display when enabling this feature Required Equipment O MS2711B Hand Held Spectrum Analyzer HHSA APCS band Pass Filter such as K amp L Electronics 5DR30 921 or equivalent APCS band antenna Procedure Step 1 Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Step 2 Connect the PCS antenna to the input of the band pa
86. he accuracy of percent age of modulation measurements Frequency Modulation This section contains general information about frequency modulation and an example of using the MS2711B to display a FM signal Frequency modulations are generated when a modulating signal fmod causes an instanta neous frequency deviation of the modulated carrier The peak frequency deviation Afpeak is proportional to the instantaneous amplitude of fmod and the rate of deviation is propor tional to the frequency of the fmod _ A fpeak The FM index p is defined as Fined In general the spectrum analyzer is a very useful tool for measuring Afpeak and f adjust ments of FM transmitters FM is composed of an infinite number of sidebands In practice the spectrum of a FM signal is not infinite The side band amplitudes become negligibly small beyond a certain frequency offset for the carrier depending on the value of f To demonstrate the properties of an FM signal we will use a carrier frequency of 100 MHz and test for FM deviation accuracy at 25 kHz With a value of 2 we need 50 kHz modu lating signal Step 1 Connect the FM signal source to the input of the MS2711B Step 2 Set the reference level to 0 dBm Step 3 Set the attenuation coupling to AUTO Step 4 On the signal source set the carrier frequency to 100 MHz modulating fre quency to 50 kHz carrier power to 10 dBm and deviation to 25 kHz Step 5 Set t
87. he center frequency of the MS2711B to 100 MHz span to 500 kHz resolu tion bandwidth to 10 kHz and video bandwidth to 1 kHz You will see a carrier signal at 100 MHz and 3 sidebands on each side Figure 4 8 The side bands are separated by 50 kHz shown by the value of AM2 which is the fmod 4 10 Chapter 4 Measurement Fundamentals TRACEA REF LVL 0 0 dBm RBW 40kHz VBW ikHz ON OFF 10dB DIV ATTEN EDIT 30dB SWP Cont RFin 5022 MEM MARKER TO Pos Peak PEAK MARKER FREO TO CENTER 124s CENTER 100 000MHz BACK 1 9 52 dBm 100 000MHz M3 OFF Ki 12 12 dB 50430kHz M4 OFF Figure 4 8 Frequency Modulation Example 4 AM FM Demodulation Amplitude modulation AM and frequency modulation FM are common modulation techniques used to broadcast information In the United States and Canada the AM broad cast band is 535 kHz to 1605 kHz while the FM broadcast band covers 88 MHz to 108 MHz Demodulation of AM and FM signals can be done with zero span capability and with a wide enough bandwidth to fully encompass the modulated signal using the Anritsu HHSA internal speaker or headset jack and built in AM FM demodulator Example Step 1 Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a
88. hen the operating time between charging is notice ably shorter than normal 2 24 Chapter 2 Quick Start Guide Important Battery Information With a new NiMH battery full performance is achieved after three to five complete charge and discharge cycles The NiMH battery supplied with the HHSA has already completed three charge and discharge cycles at the factory Recharge the battery only in the HHSA or in an Anritsu approved charger When the HHSA or the charger is not in use disconnect it from the power source Do not charge batteries for longer than 24 hours overcharging may shorten battery life If left unused a fully charged battery will discharge itself over time Storing the battery in extreme hot or cold places will reduce the capacity and lifetime of the battery The bat tery will discharge faster at higher ambient temperatures Discharge an NiMH battery from time to time to improve battery performance and bat tery life The battery can be charged and discharged hundreds of times but it will eventually wear out The battery may need to be replaced when the operating time between charging is notice ably shorter than normal If a battery is allowed to totally discharge the smart memory capability of the battery may be lost resulting in incorrect battery capacity readings or loss of communication with the battery Do not short circuit the battery terminals Do not drop mutilate or attempt to disassemble the batter
89. ier frequency The carrier is measured by M1 The delta marker M3 shows the signal at fe 6 MHz to be 73 55 dB down from the carrier This value should be compared against the specification TRACEA RBW 10kHz VBW 300kHz REF LVL 10 0 dBm 1 ge SWP 10 59s CENTER 947 500MHz SPAN 50 000MHz M1 20 14 dBm 947 437MHz 3 73 55 dB 6 015MHz 22 67 53 dB 24 303MHz M4 OFF Figure 5 8 In band Spurious Measurement NOTE The resolution bandwidth of a spectrum analyzer is determined by the intermediate frequency IF filter bandwidth The MS2711B traces the shape of the IF filter as it sweeps past a signal Therefore if two equal amplitude signals are very close to each other the measurement result can appear to be one sin gle response because the IF or resolution bandwidth is not small enough to re solve the two signals Similarly if two signals are not equal in amplitude but are very close together the smaller signal may not be seen because it is hidden un der the large response 5 17 Chapter 5 Field Measurements Field Strength Required Equipment g Procedure Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Step 11 Step 12 MS2711B Hand Held Spectrum Analyzer Portable Antenna Use the Antenna Editor feature of the Software Tools to define an antenna see page 8 8 Reset the MS2711B to
90. in 500 SWP TIME ir Weiblich ld 1 715 CENTER 1 900GHz SPAN 1 000MHz 1 13 39 dBm 1 900GHz M3 OFF Wei 34 47 dB 50 120kHz M4 OFF Figure 4 4 Measurement of Two Signals Having Unequal Amplitudes Step 7 Change the resolution bandwidth to 30 kHz Figure 4 5 shows the results after changing the RBW using a signal combiner splitter with a loss of 6 dB TRACE A REF LVL 20 0 dBm RBW 30 kHz VBW 300 2 40cB DIV ATTEN di 50dB SWP Cont 500 zi MARKER TO Pos Peak PEAK 1 67s CENTER 1 900GHz SPAN 1 000MHz 0 14 14 dBm 1 900GHz M3 OFF M2 OFF M4 OFF Figure 4 5 Measurement of Two Signals Having Unequal Amplitudes The two signals should still be observable with the 10 kHz resolution bandwidth but may be difficult to detect with the 30 kHz resolution bandwidth Narrowing the span may help in detecting the differences in these two signals Chapter 4 Measurement Fundamentals Example 2 Harmonic Distortion Most transmitting devices and signal sources contain harmonics Measuring the harmonic content of such sources is frequently required In fact measuring harmonic distortion is one of the most common uses of spectrum analyzers The following harmonic distortion measurement applies an important group of spectrum analyzer operating skills setting the reference level using start and stop frequencies set ting the video bandwidth and RBW and making relative measurements usi
91. ion of the signal Therefore a 10 kHz resolution bandwidth must be used The next larger filter 30 kHz containing some variation would not resolve the two signals Also keep in mind that noise side bands phase noise can also affect resolution Chapter 4 Measurement Fundamentals Measurement of Two Signals Having Unequal Amplitudes Typically in real world environments closely spaced signals do not have equal amplitudes Often the difference between closely spaced signals can be as much as 60 dB To resolve two signals of unequal amplitude the resolution bandwidth must be less than or equal to the frequency separation of the two signals the same as resolving two equal amplitude signals However in this case the largest resolution bandwidth that will resolve the two unequal sig nals is determined primarily by the shape factor of the IF filter rather than by the 3 dB bandwidth Shape factor is defined as the ratio of the 60 dB bandwidth to the 3 dB band width of the IF filter Therefore to resolve two signals of unequal amplitude the half bandwidth of a filter at the point equal to the amplitude separation of the two signals must be less than the frequency separation of the two signals If you do not know the specific shape factor of the IF Filter perform this measurement as if the signals had equal amplitudes paying close attention to potential signals having unequal power levels that are closely spaced This will take some adju
92. ion 0 DEFAULT to recall the factory preset state Step 1 Press the ON OFF key then the ENTER key when prompted Step 2 Connect a signal generator to the input of the Anritsu HHSA and configure it to provide a 10 dBm 900 MHz signal 2 15 Chapter 2 Quick Start Guide Set the center frequency Step 1 Press the FREQ SPAN key Step 2 Press the CENTER frequency soft key NOTE To set the center frequency to 900 MHz use the numerical keypad to the right of the display The data keys allow you to select the exact numeric value of the active function which in this example is the center frequency When activating the center frequency function the hand held spectrum ana lyzer is set to the center frequency span mode Step 3 Enter 900 on the keypad and select the MHz soft key Observe that the signal resembles that shown in Figure 2 8 TRACEA REF LVL 0 0 RBW 1MHz VBW 1 kHz 10dB Div ATTEN SWP Cont RFIn 502 Pos Peak 245s CENTER 900 000MH2 CENTER 900 000 000 MHz SPAN 500 000 000 MHz Figure 2 8 Signal at 900 MHz 2 16 Chapter 2 Quick Start Guide Set the Frequency Span Step 1 Press the FREQ SPAN key Step 2 Press the SPAN soft key The EDIT soft key will be in its down state and the span parameter will be open for editing in the status window There are several methods by which to edit the open parameter Enter a New Value Enter a new value using the
93. ion displays the mean of all the measurements associated with that display point Negative peak displays the minimum value of all the measurements associated with that display point To set the detection method press the DETECTION soft key and select either POSITIVE PEAK AVERAGE or NEGATIVE PEAK detection Sweep Average In order to reduce the effects of noise it may be desirable to average the results of several sweeps and display that average rather than the results of individual sweeps To set the number of sweeps to average press the AVERAGE 1 25 soft key and use the up down arrow key or directly enter the desired number of sweeps from the keypad Press ENTER to set the sweep average NOTE MAX HOLD and AVERAGE are mutually exclusive Selecting Units The output can be displayed in dBm dBV dBmV or dBuV To select the display units Step 1 Press the AMPLITUDE key Step 2 Press the UNITS soft key Step 3 Select the soft key for the desired units To display marker and channel power results in mW Step 4 Press the AMPLITUDE key Step 5 Press the UNITS soft key Step 6 Select the mW READOUT soft key NOTE When mW READOUT is selected values 31000 mW will be displayed in Watts W Values 0 0001 mW will be displayed in nano Watts nW Values 1 nW will be displayed in pico Watts pW Adjusting Markers Step 1 Press the MARKER key to call up the Markers menu Step 2 Press the M1 soft key to
94. is charged Red indicates the battery is charging Green indicates the battery is fully charged Yellow indicates the battery is in a waiting state see below 2 22 Chapter 2 Quick Start Guide A yellow light may occur because the battery became too warm during the charge cycle The charger will allow the battery to cool off before continuing the charge A yellow light may also indicate that the charger is alternating charge to each of the two batteries A blinking red light indicates less than 13 VDC is being supplied to the charger stand Check that the correct AC charger adapter is connected to the charger stand If the battery fails to charge contact your nearest Anritsu Service Center Determining Remaining Battery Life When the AC DC adapter is disengaged a battery indicator symbol is continuously dis played at the top left corner of the display Figure 2 13 A totally black bar within the bat tery icon indicates a fully charged battery When LOW BATT replaces the battery indicator bar at the top left corner a couple of minutes of measurement time remains If a flashing LOW BATT is accompanied by an audio beep at the end of each trace the battery has ap proximately one minute of useable time remaining Monitor TRACE A REF LVL 0 0 dam RBW 1MHz VBW 1 kHz ON OFF 10dB Dv ATTEN SWP Cont RFin 502 Pos Peak SWP TIVE pati 409s CENTER 900 000MHz WEE 10 06 dBm 899 874MHz M3 OFF
95. is filter also affects the noise on the display but in a different manner than the res olution bandwidth In video filtering the average level of the noise remains the same but the variation in the noise is reduced Hence the effect of video filtering is a smoothing of the signal noise The resultant effect on the analyzer s display is that the noise floor com presses into a thinner trace while the position of the trace remains the same Thus chang ing the video bandwidth VBW does not improve sensitivity however it does improve discernability and repeatability when making low level measurements As a general rule of thumb most field spectrum analyzer measurements are made at a video bandwidth that is a factor of 10 to 100 less than the resolution bandwidth Thus for a reso lution bandwidth of 30 kHz the typical video bandwidth setting options are either 3 kHz or 300 Hz p Limitations With some spectrum analyzers the user has control over sweep time the elapsed time of each sweep sometimes called scan time The analyzer cannot be swept arbitrarily fast while maintaining its specified accuracy but will have a sweep rate limitation depending on the resolution bandwidth video bandwidth and frequency range selected The sweep rate is not usually chosen by the user but is determined by the frequency range swept divided by the sweep time The limitation on sweep rate comes from the settling or response time of the resolution and
96. it the upper limit segment 4 SEGMENT 5 View edit the upper limit segment 5 BACK Return to the previous menu MULTIPLE Set multiple user defined lower limits and can be used to create a lower LOWER limit mask for quick pass fail measurements A lower limit will result in a LIMITS failure when the data falls below the limit line Menu choices are 3 11 Chapter 3 Key Functions LIMIT BEEP SEGMENT 1 View edit the lower limit segment 1 SEGMENT 2 View edit the lower limit segment 2 SEGMENT 3 View edit the lower limit segment 3 SEGMENT 4 View edit the lower limit segment 4 SEGMENT 5 View edit the lower limit segment 5 BACK Return to the previous menu Turns the audible limit beep indicator on or off When the limit beep indi cator is on an audible beep will occur at every data point that appears above the upper limit or below the lower limit Limit Segment Menu The Limit Segment Menu displays when a segment is selected from the Multiple Upper Limits or Multiple Lower Limits menus ON OFF EDIT PREV SEGMENT NEXT SEGMENT BACK Marker Menu Turns the segment on or off Opens the segment parameters for editing see Adjusting Segmented Limits page 2 12 Edit or view the parameters of the previous segment Edit or view the parameters of the next segment If the next segment is off when this button is pressed the starting point of the next segment will be set equal to the ending point of the curre
97. key The message area will show REL ON and the power reading will indi cate 100 Step 2 Press the UNITS soft key to display power in dBm Since REL is ON the power reading will be in dBr relative to the base power level 5 20 Chapter 5 Field Measurements ATTENUATOR RF DETECTOR Anritsu RF DET PORT Option 5 1 Anrtsuc MSZ711B e MS2711B J C Figure 5 10 Power Monitor Measurement Setup 5 21 Chapter 5 Field Measurements Dynamic Attenuation Control The dynamic attenuation control feature tracks the peak input signal level and automatically adjusts the attenuator and reference level to protect the MS2711B in situations of high RF signal levels This feature also enhances the instrument sensitivity in situations of low level RF signals by deactivating and activating the internal preamplifier if installed resulting in improved measurement accuracy The dynamic attenuation feature attempts to display the peak signal somewhere between 2 and 15 dBm below the reference level It first attempts to do this by adjusting the reference level and thereby the attenuation since they are coupled The attenuation cannot be re duced any further than 0 dB At this point if the peak signal is still low it might be buried in the noise floor the preamplifier is turned on if Option 8 is installed This happens wit
98. king Generator Fast Tune Insertion Loss Return Loss Insertion Gain VSWR NOTE Not all selections apply to every Anritsu Hand Held instrument Chapter 8 Software Tools Plot Capture to the PC To open the plot capture menus select the capture icon on the button bar or select the Capture drop down menu from the menu bar Select Capture to Screen to download traces to the PC Select a folder or individual traces within a folder to be downloaded to the PC The traces will appear on the PC display as they are downloaded When Software Tools is communicating with the instrument REMOTE will be displayed to the left of the graph Plot Upload to the Instrument Open a plot to be uploaded to the instrument Plot properties can be modified on the PC be fore it is uploaded if desired Select the Capture drop down menu from the menu bar Select Upload the Current Plot to upload the plot to the instrument The plot will be stored in the instrument non volatile memory with the original date and time that the plot was saved The uploaded trace can be viewed on the instrument by pressing the RECALL DISPLAY button on the instrument keypad Plot Properties After downloading certain plot properties and information can be modified Select the Plot Properties or Plot Information icon Plot Properties that can be changed include Graph Titles Display Mode Scale Limit Markers Misc Plot Display Parameters Graph Title
99. lay Select setup location 0 to recall the factory preset state Using the test port extension cable and 30 dB attenuator connect the signal source to the input of the attenuator and connect the output of the attenuator to the RF In test port of the MS2711B Press the FREQ SPAN key and select the CENTER soft key Enter the center frequency Press the SPAN soft key Set the span wide enough to include the primary chan nel bandwidth and upper and lower channel bandwidths Press the AMPLITUDE key and select the REF LEVEL soft key to set the ref erence level to 0 dBm Press the ATTEN soft key and set the attenuation to AUTO Press the BW SWEEP key and select the RBW and VBW soft keys to set the resolution bandwidth to 10 kHz and the video bandwidth to 300 Hz Chapter 5 Field Measurements Step 8 Press the MARKER key and press the M1 soft key Step 9 Press the EDIT soft key Use the Up down arrow key to move the marker over one of the spurs Press the ENTER key to set the marker Step 10 Compare the value of the marker to the specified allowable level of out of band spurious emissions for the corresponding channel transmit frequency Step 11 Repeat Steps 8 11 for the remaining spurs Use either Marker 1 again or choose another marker Figure 5 7 shows a simulated out of band spurious signal at 21 052 MHz from the carrier TRACE A REF LVL 00 dBm RBW 10kHz VBW 300 Hz ONOFF 10dB DIV ATTEN EDIT SOdB DELTA
100. lay a signal on the screen Once a signal is displayed the user can measure the signal input in four simple steps to determine the fre quency and amplitude of the signal These steps are O Setting the center frequency Setting the frequency span g 1 Setting the amplitude g Activating the marker NOTE Frequency span and amplitude are the fundamental functions for spec trum analyzer measurements However by using marker functions you are able to read out frequencies and amplitudes on the spectrum analyzer trace This lets you make relative measurements automatically locate the signal of the highest amplitude on a trace and tune the spectrum analyzer to track a sig nal For more information refer to Chapter 4 Measurement Fundamentals Example Measuring a 900 MHz signal NOTE A reset step is recommended to return the HHSA to the factory default settings if a known starting state is desired before beginning any measurement Some of the factory defaults include preamp off if installed RBW VBW and Span mathematically coupled attenuation coupled to the reference level There are two methods that can be used to reset the MS2711B to the factory defaults If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is on press the RECALL SETUP key on the data keypad When the key is pressed a Hecall Trace selection box appears on the display Select setup locat
101. ment would include the fundamental frequency harmonics spurious responses and noise in the measurement On the other hand a narrow band mea surement will filter out all but the desired frequency components resulting in a measure ment that includes only the fundamental There are advantages to each The ultimate decision will be dependent on the type of measurement required by the user There is always some amount of noise present in a measurement Noise is often broadband in nature that is it exists at a broad range of frequencies in the frequency domain If the noise is included in the measurement the measured value will be in error too large de pending on the noise level With a wide bandwidth more noise is included in the measure ment With a narrow bandwidth very little noise enters the resolution bandwidth filter and the measurement is more accurate If the resolution bandwidth is narrower the noise floor will drop on the display of the spectrum analyzer This is because the IF filter of the ana lyzer has been made narrower in bandwidth which lets in less noise As the measured noise level drops smaller signals that were previously obscured by the noise can now be mea sured As a general rule of thumb most field spectrum analyzer measurements are made at a resolution bandwidth of 30 kHz Effect of Video Bandwidth Swee Spectrum analyzers typically use another type of filtering after the detector called video fil tering Th
102. n features can be used to extend battery life over an eight hour workday The Anritsu HHSA is designed for monitoring measuring and analyzing signal environ ments Typical measurements include in band interference transmit spectrum analysis an tenna isolation and cell area interference A full range of marker capabilities such as peak center and delta functions are provided for faster more comprehensive measurement of dis played signals Multiple limit lines are available for creating quick simple pass fail mea surements menu option provides for an audible beep when the limit value is exceeded To permit use in low light environments the LCD can be back lit using a front panel key Standard Accessories Anritsu Software Tools a PC based software program provides an on line database record for storing measurement data Software Tools can also convert the Anritsu HHSA display to a Microsoft Windows 95 98 NT4 2000 ME XP graphic Measurements stored in the Anritsu HHSA internal memory can be down loaded to a PC using the included null mo dem serial cable Once stored the graphic trace can then be displayed scaled or enhanced with markers and limit lines Historical graphs can be overlaid with current data using the PC mouse in a drag and drop fashion The underlying data can be extracted and used in spreadsheets or for other analytical tasks 1 1 Chapter 1 General Information The following standard accessories are supplied
103. n the message area Select the alphanumeric characters for that trace name and press ENTER key to implement NOTE Pressing the SAVE DISPLAY key will bring up the last saved trace name on the input line Pressing the BACK SPACE soft key will erase the last character in that trace name This feature can be useful when naming traces sequentially such as Trace 1 Trace 2 etc Recall Display Menu Pressing the RECALL DISPLAY key recalls a previously saved trace from memory When the key is pressed a Recall Trace selection box appears on the display Select a trace using the Up Down arrow key and press the ENTER key to implement Press the ESCAPE CLEAR key to return to measurement mode Single Continuous Toggles between continuous and single sweep modes as indicated to the left side of the dis play The default is continuous sweep When single sweep is activated the Anritsu HHSA will sweep once and hold until a new trace is activated by pressing the ENTER key Single sweep mode can be used to conserve battery power Print Selecting the PRINT key prints the current display to the selected printer System Menu Pressing SYS on the data keypad activates a menu of system related functions Use the cor responding softkey to select the system function OPTIONS Displays a second level menu of options functions see below CLOCK Displays a second level menu of clock functions see below SELF TEST Starts an instrument self
104. nd 30 dB attenuator connect the signal source to the input of the attenuator and connect the output of the attenuator to the RF In test port of the MS2711B Press the AMPLITUDE key and select the REF LEVEL soft key to set the ref erence level to 0 dBm Press the ATTEN soft key and set the attenuation to AUTO Press the BW SWEEP key and select the RBW and VBW soft keys to set the resolution bandwidth to 1 MHz and the video bandwidth to AUTO Press the MAX HOLD soft key to set max hold to ON as indicated in the lower left of the display Press the MEAS key and press the ACPR soft key Select the CENTER FREQ soft key and enter 945 7 MHz or another desired center frequency Select the MAIN CHANNEL BW soft key and enter the main channel band width For the GSM signal enter 2 0 MHz Select the ADJ CHANNEL BW soft key and enter the adjacent channel band width For the GSM signal enter 30 kHz Select the CHANNEL SPACING soft key and enter the channel spacing For the GSM signal enter 19 5 MHz Make the measurement by pressing the MEASURE ON OFF soft key The de tection method is automatically changed to Average Solid vertical lines are drawn on the display to indicate the main channel Dashed vertical lines define the adjacent channels The MS2711B will display the measurement results in the message area 5 11 Chapter 5 Field Measurements Figure 5 5 shows the results of the measurement using a GSM signal source with
105. ng two markers It also demonstrates setting a signal to center frequency using a marker Example Step 1 Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location O to recall the factory preset state Step 2 Press AMPLITUDE and then select REF LEVEL Step 3 Enter the desired Reference Level 20 dB using the keypad and press ENTER Step 4 Connect a signal source to the Anritsu HHSA spectrum analyzer Step 5 Set the signal source frequency to 10 MHz and the signal level to 10 dBm Step 6 Set the START frequency at 1 MHz Step 7 Set the STOP frequency to 50 MHz Step 8 Set the resolution bandwidth to improve visibility by smoothing the noise a Press BW SWEEP b Press RBW then MANUAL Step 9 Use the Up down arrow key to select the desired resolution bandwidth 100 kHz in this case Step 10 Press ENTER once the desired resolution bandwidth has been selected Step 11 Set the video bandwidth to improve visibility by smoothing the noise a Press BW SWEEP b Press VBW then MANUAL Step 12 Use the Up down arrow key to select the desired video bandwidth 3 kHz in this case Step 13 Press ENTER once the desired video bandwidth has been selected
106. nritsu 69xxxB Synthesized Signal Generator or equivalent Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Connect the RF output of the signal source to the RF In port of the MS2711B If necessary set the MS2711B to Spectrum Analyzer mode Press the FREQ SPAN key and select the CENTER soft key and enter the cen ter frequency of the measurement using the keypad Select the GHz MHz kHz or Hz softkey to accept the center frequency input Set the signal source output level to 100 dBm Press the AMPLITUDE key and select the REF LEVEL soft key to set the ref erence level to 80 dBm Press the SCALE soft key and set the scale to 5 dB division Press the ATTEN soft key and set the attenuation to AUTO and press the BACK soft key Press the DETECTION soft key and set the detection mode to POSITIVE PEAK Press the BW SWEEP key and select the RBW and VBW soft keys to set the resolution bandwidth to 10 kHz and the video bandwidth to AUTO Press the MEAS hard key and press the PREAMP soft key to toggle the preamplifier state With the Preamp set to off there may be no signal on the dis play or the signal may
107. nritsu Company equipment and computer programs The drawings specifications and information contained herein are the property of Anritsu Company and any un authorized use or disclosure of these drawings specifications and information is prohibited they shall not be reproduced copied or used in whole or in part as the basis for manufacture or sale of the equipment or software programs without the prior written consent of Anritsu Company UPDATES Updates to this manual if any may be downloaded from the Anritsu internet site at http www us anritsu com DECLARATION OF CONFORMITY Manufacturer s Name ANRITSU COMPANY Manufacturer s Address Microwave Measurements Division 490 Jarvis Drive Morgan Hill CA 95037 2809 USA declares that the product specified below Product Name Site Master Model Number MS2711B conforms to the requirement of EMC Directive 89 336 EEC as amended by Council Directive 92 31 EEC amp 93 68 EEC Low Voltage Directive 73 23 EEC as amended by Council directive 93 68 EEC Electromagnetic Interference Emissions CISPR 11 1990 EN55011 1991 Group 1 Class A EN 61000 3 2 1995 Class A EN 61000 3 3 1995 Class A EN 61000 4 2 1995 EN50082 1 1997 4kV CD 8kV AD EN 61000 4 3 1997 EN50082 1 1997 3V m ENV 50204 EN50082 1 1997 3V m EN 61000 4 4 1995 EN50082 1 1997 0 5kV SL 1kV PL EN 61000 4 5 1995 EN50082 1 1997 1kV L L 2kV L E EN 61000 4 6 1994 EN61326 1998 3V EN 61000 4 11 1994 E
108. nt and a lower limit segment may have over lapping frequency ranges Two upper limit segments or two lower limit segments cannot overlap 2 28 Chapter 2 Quick Start Guide Using the Soft Carrying Case The soft carrying case has been designed such that the strap can be unsnapped to allow the case to be easily oriented horizontally thus allowing the Anritsu controls to be more easily accessed Figure 2 16 Figure 2 16 Using the Soft Carrying Case 2 29 2 30 Chapter 3 Key Functions Introduction This chapter provides a description of the Anritsu MS2711B Hand Held Spectrum Analyzer keypad controls There are two kinds of keys available on the MS2711B front panel Hard Keys and Soft Keys Hard Keys Hard keys are those keys on the front panel that are labeled in black and blue and perform specific functions as explained below There are four function hard keys located below the display and seventeen keypad hard keys located to the right of the display Twelve of the keypad hard keys are dual purpose depending on the current mode of operation Function Hard Keys MODE FREQ SPAN AMPLITUDE BW SWEEP Sets the Anritsu HHSA to a specific mode of operation Use the Up Down arrow key to select the mode of operation Selections available will vary depending upon which options are installed Press the ENTER key to im plement the selection Activates a menu of frequency and span related functions for sele
109. nt segment Return to the previous menu Pressing MARKER on the data keypad activates a menu for the six different markers Use the corresponding softkey to select the desired marker Then use the marker second level menu to turn the markers on or off and to edit marker parameters and values M1 M2 M3 M4 MORE 3 12 Selects the M1 marker parameter and opens the Markers second level menu with M1 highlighted Selects the M2 marker parameter and opens the Markers second level menu with M2 highlighted Selects the M3 marker parameter and opens the Markers second level menu with M3 highlighted Selects the M4 marker parameter and opens the Markers second level menu with M4 highlighted Press to access additional marker functions M5 Selects the M5 marker parameter and opens the M5 marker second level menu with M5 highlighted Chapter 3 Key Functions ALL OFF M6 Selects the M6 marker parameter and opens the M6 marker second level menu with M6 highlighted Turns off all markers Markers Second Level Menu The markers second level menu is used to turn the markers on or off and to edit marker pa rameters and values ON OFF EDIT DELTA MARKER TO PEAK MARKER FREQ TO CENTER Turns the selected marker on or off Opens the selected marker parameter for data entry Enter the desired marker frequency using the keypad or Up Down arrow key Select the GHz MHz kHz or Hz softkey to accept the marker f
110. numeric keypad As soon as a number is pressed the soft keys change to the frequency terminator keys GHz MHz kHz Hz Select the appropriate ter minator key Automatically Set Full Span Press the FULL soft key The span will automatically be set to the full range of the MS2711B Automatically Set Zero Span Press the ZERO soft key The span will automatically be set to zero centered at the current center frequency Span Up in a 1 2 5 Sequence Press the SPAN UP 1 2 5 soft key to increase the span to the nearest power of 10 times either 1 2 or 5 For example if the current span is 300 kHz pressing the SPAN UP 1 2 5 soft key will change the span to 500 kHz Pressing the SPAN UP 1 2 5 soft key again will change the span to 1 MHz Span Down in a 1 2 5 Sequence Press the SPAN DOWN 1 2 5 soft key to decrease the span to the nearest power of 10 times either 1 2 or 5 For example if the current span is 300 kHz pressing the SPAN DOWN 1 2 5 soft key will change the span to 200 kHz Pressing the SPAN DOWN 1 2 5 soft key again will change the span to 100 kHz A span of 20 MHz is shown in Figure 2 9 TRACE A REF LVL 00 dBm RBW 1MHz VBW 1 kHz 10dB DIV ATTEN SWP Cont RFin 5002 Pos Peak gren SWP TME 972ms CENTER 900 000MHz CENTER 900 000 000 MHz SPAN 20 000 000 MHz BACK Figure 2 9 20 MHz Frequency Span 2 17 Chapter 2 Quick Start Guide Set the Amplitude Generally placin
111. o lock Charge bat tery If condition persists with a fully charged battery call your Anritsu Service Center Non volatile memory system has failed Call your Anritsu Service Center Ambient temperature is not within the specified operating range If the temperature is within the specified operating range and the con dition persists call your Anritsu Service Center Failure of the power monitor system board voltages If condition per sists call your Anritsu Service Center Battery communication failed The indicated battery charge status may be invalid f condition persists call your Anritsu Service Cen ter The EEPROM test on the main board has failed f condition per sists call your Anritsu Service Center The internal real time clock battery is low low or drained clock battery will affect the date stamp on saved traces Contact your near est Anritsu Service Center NOTE A listing of current Anritsu service centers is given in Table 1 3 page 1 9 Operation Error Messages The following tables list possible error messages that could occur during operation of the HHSA 2 27 Chapter 2 Quick Start Guide Table 2 3 Error Messages continued Error Message NO STORED SWEEP AT THIS LOCATION USE OPTIONS MENU TO SELECT A PRINTER CANNOT ZERO NO DETECTOR INSTALLED CANNOT ZERO INPUT SIGNAL TOO HIGH POWER MONITOR OPTION NOT INSTALLED CHECK FOR OUT OF BAND INTERFERENCE ANT
112. o the HHSA DC power input port Step 3 Connect the AC adapter to a 120 VAC or 240 VAC power source as appropriate for your application The green external power indicator on the HHSA will illuminate indicating the presence of external DC power the battery charge indicator will light and the battery will begin fast charging The charging indicator will remain lit as long as the battery is fast charging Once the battery is fully charged the fast charging indicator will turn off and a trickle charge will be started to maintain battery ca pacity If the battery fails to charge contact your nearest Anritsu service center NOTE If a battery is excessively discharged it may require several hours of trickle charging before the charger will allow a fast charge Switching to fast charge mode is not automatic You must either cycle the power on and off or disconnect and reconnect the AC DC adapter Charging the Battery in the Optional Charger Up to two batteries can be charged simultaneously in the optional battery charger Step 1 Remove the NiMH battery from your HHSA and place it in the optional charger Anritsu part number 2000 1029 Step 2 Connect the lead from the AC DC adapter to the charger Step 3 Connect the AC DC adapter to a 120 VAC or 240 VAC power source as appro priate for your application Each battery holder in the optional charger has an LED charging status indicator The LED color changes as the battery
113. of additional spectrum analyzer functions beyond frequency span amplitude and marker functions In particular this section will focus on resolution bandwidth video bandwidth sweep and attenuator functions Effect of Resolution Bandwidth Resolution Bandwidth is determined by the intermediate frequency IF filter bandwidth The spectrum analyzer traces the shape of its IF filter as it tunes past a signal If more than one IF filter is used in a spectrum analyzer the narrowest one dominates and is considered the resolution bandwidth The choice of resolution bandwidth depends on several factors Filters take time to settle That is when a signal first appears at the input of the filter it will take a while before the signal appears at the output Additionally the output of the filter will take some time to set tle to the correct value so that it can be measured The narrower the filter bandwidth reso lution bandwidth the longer the settling time The choice of resolution bandwidth will depend on the signal being measured If two sig nals are to be measured individually then a narrow bandwidth is required If a wider band width is used then the energy of both signals will be included in the measurement Thus the wider bandwidth does not have the ability to look at frequencies selectively but instead must measure across their entire frequency range at all times Chapter 4 Measurement Fundamentals Therefore a broadband measure
114. omatically turn marker 1 on and set it to the center frequency Additional modulation information can be determined from the carrier signal and sideband For example the difference between the carrier frequency and the sideband frequency can be found by pressing turning on and positioning Marker M2 over an upper or lower side band frequency and pressing the DELTA M2 M1 soft key Figure 4 7 shows the modulat ing frequency of 35 kHz as the value of delta Marker 2 TRACE A RBW 40kHz VBW 100 Hz M H 1 EL REF LVL 20 0 dBm 10dB DiV 108 j SWP Cont RFIn 500 Pos Peak Pd 1 28 28 dBm 100 000MHz M3 OFF OFF 2 24 55 dB 35 090kHz M4 OFF Figure 4 7 Amplitude Modulation 4 9 Chapter 4 Measurement Fundamentals The markers read the frequency difference between the two signals which is equal to the modulating frequency The marker also reads the difference in amplitude This difference in amplitude between the two signals can be used to determine the percentage of modula tion Use the following formula to calculate the percentage of modulation Esp 4B Ec dB 201og 5 Where Esp dB is the energy in the sidebands in dB Ec dB is the energy in the carrier in dB and m is the degree of modulation multiply by 100 to get the percentage NOTE Unequal amplitudes of the lower and upper sidebands indicate inciden tal FM on the input signal Incidental FM can reduce t
115. on cable Connect the output of the DUT to the RF In port of the MS2711B using a test port extension cable Press the MODE key and the Up Down arrow key to select TRACKING GEN ERATOR Press ENTER to confirm the selection Press the FREQ SPAN key and select the CENTER soft key Enter the center frequency of the measurement This example uses 1960 MHz Press the SPAN soft key and set the span This example uses 200 MHz With the DUT connected press the BW SWEEP key and select the RBW and VBW soft keys to set the resolution bandwidth and the video bandwidth For this example set both to AUTO Press the AMPLITUDE key and set the REFERENCE LEVEL This example uses 0 dBm Press the ATTEN soft key to set the input attenuation level This example uses AUTO Press the AMPLITUDE key and set the TG OUTPUT LEVEL Make sure the output signal from the DUT will not drive the MS2711B into saturation This example uses 0 dBm NOTE If the MS2711B is equipped with the Preamplifier option Option 8 and the preamplifier is ON the RF power in plus the attenuation should be less than or equal to 50 dBm 7 5 Chapter 7 Tracking Generator If the MS2711B is not equipped with the Preamplifier option or the Preamplifier is OFF the RF power in plus the attenuation should be less than or equal to 30 dBm For example for an input power of 10 dBm 10 40 dB atten 30 dBm Therefore the attenuation must be 40 dB o
116. on cable and 30 dB attenuator connect the signal source to the input of the attenuator and connect the output of the attenuator to the RF In test port of the MS2711B 5 5 Chapter 5 Field Measurements Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Step 11 Step 12 Figure 5 3 Press the AMPLITUDE key and select the REF LEVEL soft key to set the ref erence level to 10 dBm Press the SCALE soft key and set the scale to 10 dB division Press the ATTEN soft key followed by the MANUAL soft key and set the atten uation to 20 dB Press the BW SWEEP key and select the RBW and VBW soft keys to set the resolution bandwidth to 1 MHz and the video bandwidth to AUTO Press the MAX HOLD soft key to set max hold to ON as indicated in the lower left of the display Press the MEAS key and press the CHANNEL POWER soft key Select the CENTER FREQ soft key and set the center frequency of the GSM signal to 947 5 MHz Select the INT BW soft key and enter 2 0 MHz for the integration bandwidth or set the integration bandwidth appropriate for the particular application Select the CHANNEL SPAN soft key and enter 4 0 MHz as the channel span or set the channel span to a value appropriate for the particular application Make the measurement by pressing the MEASURE ON OFF soft key The de tection method is automatically changed to Average Solid vertical lines are drawn on the display to indicate the in
117. ont panel are used to initiate function specific menus There are four function hard keys located below the display Mode Frequency Span Amplitude and Bandwidth S weep There are seventeen keypad hard keys located to the right of the display Twelve of the key pad hard keys are dual purpose depending on the current mode of operation The dual pur pose keys are labeled with one function in black the other in blue There are also six soft keys that change function depending upon the current mode selec tion The current soft key function is indicated in the active function block to the right of the display The locations of the different keys are illustrated in Figure 2 2 below Active Function Block Soft Keys EN a Anritsu 7 S2711B n DN ENTER SINGLE CONT OQ E MODE FREQ SPAN AMPLITUDE BW SWEEP Function Hard Keys Figure 2 2 MS2711B Keys Chapter 2 Quick Start Guide Display Overview Figure 2 3 illustrates some of the key information areas of the MS2711B display TITLE BAR TRACE A REF LVL 80 0 dBm RBW 40 kHz VBW 3kH2 SWEEP MODE RF INPUT PORT IMPEDANCE CURRENT MENU DETECTION METHOD PREAMPLIFIER STATE 99 42 d
118. or SPAN DOWN 1 2 5 soft keys These keys facilitate a zoom in zoom out in a 1 2 5 sequence Chapter 2 Quick Start Guide Selecting the Amplitude Step 1 Step 2 Step 3 Step 4 Press the AMPLITUDE key Press the UNITS soft key and select the desired units from the soft keys pre sented Press the BACK soft key to return to the Amplitude menu Press the REF LEVEL soft key and use the up down arrow key or directly enter the desired reference level from the keypad Press ENTER to set the amplitude level Press the SCALE soft key and use the up down arrow key or directly enter the desired scale from the keypad Press ENTER to set the scale NOTE Press the ATTEN soft key and select AUTO coupling of the attenuator setting and the reference level to help insure that harmonics and spurs are not introduced into the measurements See Attenuator Functions page 4 3 for more information Selecting Bandwidth Parameters Both resolution bandwidth RBW and video bandwidth VBW can be automatically or manually coupled Auto coupling of the RBW links the RBW to the span That is the wider the span the wider the RBW Auto coupling is indicated on the display as RBW XXX When the RBW is manually coupled it can be adjusted independently of the span Manual RBW coupling is indicated on the display as RBW XXX Auto coupling of the VBW links the VBW to the RBW That is the wider the RBW the wider the VBW Auto cou
119. p to a maximum of 16 characters Press ENTER to set the saved display name Recall the Display Step 1 Step 2 Step 3 Step 4 Printing Press the RECALL DISPLAY key Select the desired display using the Up Down arrow key Press ENTER to recall the selected display Press the ESCAPE CLEAR key to return to measurement mode The MS2711B will resume measuring Printing is accomplished using any printer listed in the MS2711B printer selection table Available printers include Canon BJC 50 HP DJ 340 350 Canon BJC 80 HP DJ 500 Series Canon BJC 250 HP DJ 600 Series Canon BJC 4400 HP DJ 800 Series Citizen PN Models HP DJ 1120 Epson Esc P Compatible HP LJ 6L 6P 4000 Epson Esc P2 Compatible HP PCL3 Compatible Epson Esc P Raster Compatible NEC Superscript Models Epson Stylus Models NEC Silentwriter Models Epson LQ Models Seiko DPU 411 414 Model Figure 2 12 shows a setup diagram for two types of printers Refer to the printer manual for setup details Printer Switch Settings Set the switches on the serial to parallel interface cable to the HP Deskjet 350 ink jet printer or other parallel interface printer as follows SW OFF 2 20 SW2 SW3 SWA SW5 SW6 SW7 SW8 ON OFF OFF OFF OFF ON OFF Chapter 2 Quick Start Guide Set the switches SW1 SW2 and SW3 on the Seiko DPU 414 thermal printer as follows Switch 1 2 3 4 5 6 7 8 SW1 OFF ON ON ON ON OFF ON ON SW2 ON ON ON ON ON ON OFF SW3 ON ON ON OFF OFF ON O
120. pling is indicated on the display as VBW XXX When the VBW is manually coupled it can be adjusted independently of the RBW Manual VBW coupling is indicated on the display as VBW Step 1 Step 2 Step 3 Step 4 Step 5 Press the BW SWEEP key to display the bandwidth menu To select the resolution bandwidth press the RBW soft key Press AUTO for automatic resolution bandwidth selection or press MANUAL and use the Up Down arrow key to select the resolution bandwidth Press ENTER to set the resolution bandwidth Press the BACK soft key to return to the bandwidth menu To select the video bandwidth press the VBW soft key Press AUTO for automatic video bandwidth selection or press MANUAL and use the Up Down arrow key to select the video bandwidth Press ENTER to set the video bandwidth Selecting Sweep Parameters Max Hold To toggle maximum hold ON or OFF press the MAX HOLD soft key Maximum hold dis plays the maximum response of the input signal over multiple sweeps 2 10 Chapter 2 Quick Start Guide Detection Method Each display point represents some number of measurements combined by a detection method The number of measurements per display point is affected by the span and the res olution bandwidth The three available detection methods are Positive Peak Average and Negative Peak Positive peak displays the maximum value of all the measurements associ ated with that display point Average detect
121. pressing this key will move up one menu level Press and hold this key while turning the unit on to restore all fac tory default settings Increments or decrements a parameter value The specific parameter value affected typically appears in the message area of the LCD Implements the current action or parameter selection Turns the Anritsu HHSA on or off When turned on the last saved system state is restored If the ESCAPE CLEAR key is held down while the ON OFF key is pressed the factory preset state will be restored Allows selection of system setup parameters Choices are OPTIONS CLOCK 50 Q 75 Language and SELF TEST The following keypad hard key functions are printed in blue on the keypad keys TRACE MEAS SAVE SETUP 3 2 Turns the liquid crystal display LCD back lighting ON or OFF Leaving back lighting off conserves battery power LCD Contrast adjust Use the Up Down arrow key and ENTER to adjust the display contrast to suit ambient conditions Activates a menu that allows comparison of a current runtime trace Trace A to a saved trace Trace B Activates a menu of measurement related functions including field strength occupied bandwidth OBW channel power adjacent channel power ratio ACPR AM FM Demodulation and Preamp if Option 8 is installed Saves the current system setup to 1 of 10 internal non volatile memory lo cations When the key is pressed a Save Setup selection box appears on
122. quipment 0 g Procedure Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Step 11 Step 12 Step 13 MS2711B Hand Held Spectrum Analyzer HHSA with TG Option 20 Test Port extension cable Anritsu 15NNF50 1 5C 2 Anritsu 34NN50A Adapter Test filter Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Press the MODE key and use the Up Down arrow key to select TRACKING GENERATOR Press ENTER to confirm the selection Press the FREQ SPAN key and select the START and STOP soft keys to set the start and stop frequencies For an 1800 MHz application set the start fre quency to 1800 MEZ and the stop frequency to 1950 MHz Press the AMPLITUDE key and set the REF LEVEL to 10 dBm Press the ATTEN soft key and set the attenuation to AUTO Press the AMPLITUDE key and set the TG OUTPUT LEVEL to 0 dBm Press the BW SWEEP key and select the RBW and VBW soft keys to set the resolution bandwidth and the video bandwidth Set the resolution bandwidth to 1 MHz and the video bandwidth to 300 kHz Connect the RF Out port of the MS2711B to the RF In port
123. r default or dB Down measure ment method Use the Up down arrow key or the keypad to enter the percent of power dBc Use the Up down arrow key or the keypad to enter the dBc value 0 to 120 dB MEASURE ON OFF Turns the OBW measurement on or off When the measurement is on OBW will appear to the left of the display BACK Returns to the previous menu Activates the Channel Power measurement function Channel Power and Channel Power Density can be measured in dBm or mW depending on the mW READOUT selection in the UNITS menu CENTER FREQ Activates the center frequency function and sets the center frequency of the Anritsu HHSA for the channel power measure ment INT BW Sets the integration bandwidth for channel power measure ment CHANNEL SPAN Sets the channel span for channel power measure ment MEASURE ON OFF Begins or ends the channel power measurement When the measurement is on CH PWR will appear to the left of the dis play BACK Returns to the previous menu Accesses a menu of Adjacent Channel Power Ratio measurement options CENTER FREQ Activates the center frequency function and sets the center frequency for the ACPR measurement specific center frequency can be entered using the keypad or Up Down arrow key Select the GHz MHz kHz or Hz softkey to accept the center frequency input MAIN CHANNEL BW Sets the bandwidth of the main channel for ACPR measurement 3 9 Chapter
124. r greater Step 11 Establish a reference level by removing the device and replacing the DUT with a through adapter to normalize the frequency response Step 12 Press the TRACE key and select the NORMALIZE softkey NOTE To adjust the vertical location of the trace on the display use the refer ence level OFFSET under the AMPLITUDE menu not the reference level If at tenuation is coupled to the reference level and that is modified to adjust the data display the noise floor could be affected When normalization is complete the reference level offset is automatically ad justed so that the top of the graph displays a 0 result after normalization This means RL RL offset 0 Since the through line is still connected the mea sured data minus the normalization trace should result in a straight line at the top of the graph Step 13 Reconnect the DUT to obtain the transmission measurement by sweeping the DUT over the desired frequency span Step 14 Press the AMPLITUDE key and adjust the REF LEVEL OFFSET to modify the location of the data on the graph Figure 7 3 shows the results of the filter measurement TG TRACE A REF LVL 0 0 dBm RBW 100kHz VBW 30kHz H Pd Figure 7 3 Results of the Filter Measurement Chapter 7 Tracking Generator Filter Alignment The following measurement is an example of filter alignment using the MS2711B with the built in tracking generator option Required E
125. r of the MS271 1B If the MS2711B is equipped with the Preamplifier option Option 8 and the preamplifier is ON the RF power in should be less than or equal to 50 dBm If the MS2711B is not equipped with the Preamplifier option or the Preamplifier is OFF the RF power in should be less than or equal to 30 dBm 7 4 Chapter 7 Tracking Generator Making a Transmission Measurement This section provides an overview of how to make a transmission measurement with the Anritsu MS2711B Hand Held Spectrum Analyzer equipped with the internal tracking gen erator option This example measures a 60 MHz wide bandpass filter with a center fre quency of 1960 MHz Required Equipment Procedure Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 MS2711B Hand Held Spectrum Analyzer HHSA with TG Option 20 Test Port extension cable Anritsu 15NNF50 1 5C 2 Anritsu 34NN50A Adapter Test filter DUT Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Connect the RF Out port of the MS2711B to the input of the DUT using a test port extensi
126. requencies without leaving the AM FM DEMOD menu Set the step value positive or negative fre quency and when the STEP CENTER FREQ soft key is pressed the center frequency will be adjusted by this value STEP CENTER FREQ Change the center frequency by the value entered with the SET CTR FREQ STEP SIZE soft key NOTE The STEP CENTER FREQ and SET CTR FREQ STEP SIZE soft key selections will only appear when the DEMOD TYPE is set to FM WIDE BAND FM NARROW BAND or AM BFO ADJUST Beat Frequency Oscillator Adjustment for Single Sideband Demod operation Valid selections are 0 to 255 The value is adjusted using the up down arrow key 3 10 Chapter 3 Key Functions When the value is 0 and is scrolled down the frequency will be adjusted up by 1 kHz and the BFO value will be set to 128 If the value is 255 and is scrolled up the frequency will be adjusted down by 1 kHz and the BFO value will be set to 128 NOTE The BFO ADJUST soft key selection only appears when SSB CW is se lected BACK Returns to the previous menu Save Setup Menu Pressing SAVE SETUP on the data keypad saves the current system setup to 1 of 10 inter nal non volatile memory locations When the key is pressed a Save Setup selection box ap pears on the display Use the Up Down arrow key to select a setup and press the ENTER key to implement Selecting a location that has already been used will cause the new saved setup information to ov
127. requency input Displays delta frequency and amplitude for the selected marker M2 M3 or M4 with respect to the M1 marker Places the selected marker at the maximum amplitude of a trace M1 M4 only Makes the center frequency equal to the frequency of the selected marker M1 4 only The 5 marker second level menu includes the ON OFF EDIT and BACK softkeys in addition to the following PEAK BETWEEN M1 amp M2 VALLEY BETWEEN M1 amp M2 Places the selected marker at the frequency with maximum amplitude value between marker M1 and M2 Places the selected marker at the frequency with minimum amplitude value between marker M1 and M2 NOTE If markers M1 and or M2 are off the PEAK and VALLEY functions above are executed across the entire span The M6 marker second level menu includes the ON OFF EDIT and BACK softkeys in addition to the following PEAK BETWEEN M3 amp M4 VALLEY BETWEEN M3 amp M4 Places the selected marker at the frequency with maximum amplitude value between marker M3 and M4 Places the selected marker at the frequency with minimum amplitude value between marker M3 and M4 3 13 Chapter 3 Key Functions NOTE If markers M3 and or M4 are off the PEAK and VALLEY functions above are executed across the entire span Save Display Menu Pressing the SAVE DISPLAY key saves the displayed trace to non volatile memory When the key is pressed TRACE NAME appears i
128. s After downloading the plot the Main Title can be changed to reflect the site name or other descriptive information The Sub Title field can be used to describe the specifics of the measurement and configuration Display Mode Display Mode allows changing the display type without having to retest Measurements can be changed to dBm dBV dBmV or dBuVwith a single click of mouse button Scale Limit The scale of the displayed plot can be modified to help analyze whether the plot meets pass fail criteria The Scale Limit sub menu activates options to manually enter the scale limits or to use the Auto Scale mode Chapter 8 Software Tools Manual adjustment sets the upper and lower limits of the display under the Scale Limit Submenu Auto Scale automatically adjusts the scale for maximum and minimum mea surement readings Limit Line Off turns off all limit lines Single Limit Line can be activated to help identify faults Multi Segment Limit Lines can be activated to set different limits within the same measurement display for specification requirements Markers Markers M1 through M6 can be activated from the Plot Properties menu The six active markers can be displayed on the plot to help identify faults from the line sweep data Misc The Miscellaneous tab allows adjustment of the Plot Limit Line Width the setting of the Plot Footer and the date format Plot Limit Line Width can be used when preparing reports for th
129. s are shown in Table 1 1 Table 1 1 Optional Accessories Part Number Description 5400 71N50 42N50A 30 15NN50 1 5C 15NN50 3 0C 15NN50 5 0C 15NNF50 1 5C 15NNF50 5 0C 15NNF50 3 0C 15ND50 1 5C 15NDF50 1 5C 800 109 800 110 800 111 800 112 510 90 510 91 510 92 510 96 510 97 1091 26 1091 27 1091 172 50 50 61N50 61NF50 1030 86 1030 87 1030 88 1030 89 12N50 75B RF Detector N m 50 ohm 1 to 3000 MHz Attenuator 30 dB 50 Watt bi directional Test Port Cable Armored 1 5 meter N m Test Port Cable Armored 3 0 meter N m Test Port Cable Armored 5 0 meter N m to N m 6 GHz to N m 6 GHz to N m 6 GHz Test Port Cable Armored 1 5 meter N m m to N f 6 GHz Test Port Cable Armored 3 0 meter N m to N f 6 GHz to N f 6 GHz to 7 16 DIN m 6 GHz to 7 16 DIN f 6 GHz Test Port Cable Armored 5 0 meter N m Test Port Cable Armored 1 5 meter N m ce Ill Test Port Cable Armored 1 5 meter N m Detector Extender Cable 7 6m 25 ft Detector Extender Cable 15 2m 50 ft Detector Extender Cable 30 5m 100 ft Detector Extender Cable 61m 200 ft Adapter 7 16 f to N m 3 5 GHz Adapter 7 16 f to N f 3 5 GHz Adapter 7 16 m to N m 3 5 GHz Adapter 7 16 DIN m to 7 16 DIN m 3 5 GHz Adapter 7 16 DIN f to 7 16 DIN f 3 5 GHz Adapter DC to 18 GHz 50 Ohm N m SMA m Adapter DC to 18 GHz 50 Ohm N m SMA
130. s dB Down 10 8 dB Figure 5 1 Occupied Bandwidth Occupied Bandwidth is a constant measurement Once it is turned on it will remain on un til it is turned off by pressing the MEASURE ON OFF key again When the occupied 5 2 Chapter 5 Field Measurements bandwidth measurement is on an OBW icon appears to the left of the display Occupied bandwidth is calculated at the end of a sweep An hourglass is displayed as the calculations are performed Channel Power Measurement Channel power measurement is one of most common measurements for a radio transmitter This test measures the output power or channel power of a transmitter over the frequency range in a specific time interval Out of specification power measurements indicate system faults which can be in the power amplifiers and in filter circuits Channel Power measure ments can be used to Validate transmitter performance Comply with FCC regulations Keep overall system interference at a minimum CDMA Channel Power Measurement MS2711B can be used to measure CDMA signals in terms of channel power It is necessary to use precise settings to accurately measure the CDMA signal because the CDMA signal is different from a CW signal in many respects The following are the recommended settings for accurate IS 95 CDMA measurements Channel Bandwidth 1 23 MHz RBW setting 10 kHz VBW setting gt 3 x RBW or at least 30 k
131. s metafile wmf a SMST dat file a text file txt or mdb database The metafile may be imported into graphic programs and the text file can be im ported into spreadsheet The dat and mdb files are used exclusively by the Software Tools To save a plot as a Windows metafile click on the File menu and select Save as Metafile from the pull down menu Once the trace is saved as a metafile it can be copied and trans ferred into other applications as a picture or graphic file To copy a metafile Step 1 Select the trace to be copied with the mouse cursor Step 2 Select Edit and then Copy The file will copied to the clipboard or select File and then Export to a Windows metafile Step 3 Open the target application Microsoft Word etc Step 4 Select Edit and then Paste The file will be inserted as a graphic file or a bitmap Saving a Plot to a Spreadsheet Plots can be saved as a text file txt which can then be imported into a spreadsheet program To save a plot as a text file Step 1 Select the trace to be copied with the mouse cursor Step 2 Click on the File menu and select Export to Text File for a Spreadsheet from the pull down menu Step 3 Save the file to a local directory Step 4 Exit the Software Tools program and open the spreadsheet application Step 5 Import the txt file into the spreadsheet program Chapter 8 Software Tools Creating a Database A single trace or a block of traces can be trans
132. softkey to accept the start frequency input Activates the stop frequency and sets the Anritsu HHSA in the Start Stop mode Enter the desired stop frequency and complete the entry by press ing the GHz MHz kHz or Hz softkey to accept the stop frequency input Option 20 only Sets the tracking generator frequency offset in TG or TG Fast Tune mode The offset frequency range can be set from 5 MHz to 5 MHz Pressing AMPLITUDE activates a menu of amplitude related functions REF LEVEL SCALE ATTEN Activates the amplitude reference level function A specific reference level can be entered using the keypad or up down arrow key Press ENTER to accept the reference level value Valid reference levels are 20 dBm to 120 dBm Activates the scale function in a 2 through 15 dB logarithmic amplitude scale Enter the desired scale using the keypad or up down arrow key Press ENTER to accept Sets the Anritsu HHSA input attenuator so that it is either coupled auto matically to the reference level AUTO manually adjustable MAN UAL or dynamically controlled DYNAMIC AUTO Press this softkey to automatically couple the attenuation to the reference level The automatic attenuation value is dis played to the left of the display below the ATTEN MANUAL Sets the attenuation to manual mode The attenuation can be adjusted from 0 to 50 dB in 10 dB increments using the Up down arrow key Press ENTER to accept the selected value The
133. ss filter and the output of the band pass filter to the RF In connector of the MS2711B Step 3 If necessary press the MODE key and use the Up Down arrow key to select the SPECTRUM ANALYZER mode Press the ENTER key to select Step 4 Press the FREQ SPAN key 5 22 Chapter 5 Field Measurements Step 5 Press the START soft key and enter 910 MHz Step 6 Press the STOP soft key and enter 950 MHz Step 7 Press the AMPLITUDE key and select the SCALE key Set the scale to 10 dB division Step 8 Press the ATTEN soft key and set the attenuation to AUTO Figure 5 11 shows this example through Step 8 TRACEA REF LVL 0 0 dBm RBW 100kHz VBW 30 kHz Pos Peak Figure 5 11 Dynamic Attenuation Step 9 Press the AMPLITUDE key and select the ATTEN soft key Step 10 Press the DYNAMIC soft key to turn on dynamic attenuation The ATTEN icon to the left of the graph will become to indicate that dynamic attenua tion is on The unit will complete one sweep At that time it will look at the peak signal compared to the current parameter settings If it can automatically enhance the display of the peak signal the message ADJUSTING DYNAMIC ATTENUATION PARAMETERS will appear in the message area and an hourglass will be displayed to the top right of the graph During this time the MS2711B will be adjusting parameters and collecting data to determine the optimal configuration for the current input signal Measurement res
134. ss the NEXT SEGMENT soft key to move on to segment 2 If the NEXT SEGMENT soft key is not available press ENTER If the status of segment 2 is OFF pressing the NEXT SEGMENT soft key will automatically set the start point of segment 2 equal to the end point of segment 1 Step 12 Repeat Steps 4 through 11 for the remaining segments Step 13 When the final segment is defined press the EDIT soft key again to end the edit ing process The MS2711B does not allow overlapping limit segments of the same type That is two up per limit segments cannot overlap and two lower limit segments cannot overlap The MS2711B also does not allow vertical limit segments A limit segment in which the start and end frequencies are the same but the limit values are different cannot be speci fied Enabling the Limit Beep Both limit types can indicate a limit violation by enabling the LIMIT BEEP An audible beep will sound at each data point that violates the defined limit Step 1 Press the LIMIT key Step 2 Press the LIMIT BEEP soft key The status window will indicate that the status of the limit beep is ON and the soft key will remain in the down state Press the LIMIT BEEP soft key again to disable the limit beep Adjusting Attenuator Settings The spectrum analyzer attenuation can be automatically coupled manually coupled or dy namically adjusted Step 1 Press the AMPLITUDE key Step 2 Press the ATTEN soft key Step 3 Select the
135. st to begin all measurements in AUTO attenuation mode Example 1 Resolving Closely Spaced Signals Signal resolution is determined by the intermediate frequency IF filter bandwidth The hand held spectrum analyzer as do conventional spectrum analyzers traces the shape of its IF filter as it tunes past a signal Thus if two equal amplitude signals are close enough in frequency the filter shapes for the two signals can fall on top of one another and appear as a single response Conversely if two signals are not equal in amplitude but are still close to gether the smaller signal can be hidden under the response of the larger one Measurement of Two Signals Having Equal Amplitudes To resolve two signals of equal amplitude the resolution bandwidth must be less than or equal to the frequency separation of the two signals For example to resolve two signals of equal amplitude with a frequency separation of 30 kHz a resolution bandwidth of 30 kHz or less should be used However most spectrum analyzer IF filter bandwidths are not exact varying by as much as 20 This should be taken into consideration whenever testing for closely spaced signals Thus you may want to select the resolution bandwidth within the lower end of the specification i e 20 or 24 kHz to ensure accurate measurements two signals spaced to within 30 kHz In this case the next smallest resolution bandwidth would be 10 kHz Example Connect two signal sour
136. sting among the various resolution and video bandwidth and span functions Example Connect two signal sources to the spectrum analyzer input with a combiner splitter Set the frequency of one source to 1900 0 MHz and the other source to 1900 1 MHz Set one source to 20 dBm and the other to 15 dBm Step 1 Set attenuator coupling to AUTO Step 2 Set the Reference Level to 20 dBm Step 3 Set the scale to 10 dB div Step 4 Set the span to 1 MHz and the center frequency to 1900 MHz Step 5 Set the resolution bandwidth to 10 kHz and the video bandwidth to 300 Hz The two signals should be observed on the spectrum analyzer each with differ ent amplitudes and spaced 100 kHz apart Figure 4 3 shows the results of the example using a signal combiner splitter with a loss of 6 dB Marker 2 is set as a delta marker and shows the difference in frequency and amplitude between the two peaks TRACE A SWP TIME 172s 1 13 41 dBm 1 900GHz M3 OFF 42 8442 dB 100250kH2 MA OFF Figure 4 3 Measurement of Two Signals Having Unequal Amplitudes 4 5 Chapter 4 Measurement Fundamentals Step 6 Change the frequency in the second source from 1900 100 MHz to 1900 050 MHz gradually and observe the effect Figure 4 4 shows the results with the two signals spaced 50 kHz apart using a signal combiner splitter with a loss of 6 dB TRACE A REF LVL 20 0 dBm ON OFF 10dB DIV ATTEN SWP Cont RF
137. t frequency 890 MHz start limit 40 end frequency 898 MHz end limit 40 Press the NEXT SEGMENT soft key The starting point of segment 2 will auto matically be set equal to the ending point of segment 1 Press EDIT and enter the start frequency start limit end frequency and end limit as prompted in the message area Enter start frequency 898 MHz start limit 40 end frequency 899 MHz end limit 10 Press the NEXT SEGMENT soft key The starting point of segment 3 will auto matically be set equal to the ending point of segment 2 Press EDIT and enter the start frequency start limit end frequency and end limit as prompted in the message area Enter start frequency 899 MHz start limit 10 end frequency 901 MHz end limit 10 Press the NEXT SEGMENT soft key The starting point of segment 4 will auto matically be set equal to the ending point of segment 3 Press EDIT and enter the start frequency start limit end frequency and end limit as prompted in the message area Enter start frequency 901 MEZ start limit 10 end frequency 902 MHz end limit 40 Press the NEXT SEGMENT soft key The starting point of segment 5 will auto matically be set equal to the ending point of segment 4 Press EDIT and enter the start frequency start limit end frequency and end limit as prompted in the message area Enter start frequency 902 MHz start limit 40 end frequency 910 MEZ end limit 40
138. t will re main on until it is turned off by pressing the MEASURE ON OFF key again When the ACPR measurement is on an ACPR icon appears to the left of the display ACPR is calcu lated at the end of a sweep An hourglass is displayed as the calculations are performed 5 13 Chapter 5 Field Measurements Out of Band Spurious Emissions Out of band spurious measurements are made on signals outside the system main band These signals which can interfere with other communication systems can be categorized into harmonics and random spurious emissions Real time monitoring of spurious emissions from a transmitter can uncover unwanted signals before they interfere with other channels IN BAND OUT OF BAND OUT OF BAND Figure 5 6 Example of In and Out of Bandwidth Signals Out of Band Spurious Emission Measurement Required Equipment J Procedure Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 5 14 MS2711B Hand Held Spectrum Analyzer 30 dB 50 watt Bi Directional DC 18 GHz N m N f Attenuator Anritsu 42N50A 30 Test Port extension cable Anritsu 15NNF50 1 5C Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the disp
139. tegration bandwidth The MS2711B will display the measurement results in the message area shows the results of the measurement using a GSM signal source with an output power level of 35 dBm TRACEA REF LVL 10 0 CENTER RBW 1MH2 VBW few ame soe CE i 10dB DIV NT ATTEN BW 20dB SWP Cont RFh NT CH PWR AvgDet MAX HOLD MEASURE ON OFF SWP TME 642ms INT 2 000 000 MHz CH PWR 35 60 dBm CH SPAN 4 000 000 MHz DENSITY 98 64 dBm Hz Figure 5 3 GSM Channel Power Measurement Channel Power is a constant measurement Once it is turned on it will remain on until it is turned off by pressing the MEASURE ON OFF key again When the channel power mea surement is on a CH PWR icon appears to the left of the display Channel power is calcu lated at the end of a sweep An hourglass is displayed as the calculations are performed NOTE The channel span must be set equal to or larger than the integration bandwidth bandwidth If not MS2711B will set the channel span equal to the integration When the integration bandwidth and channel span are set to the 5 6 Chapter 5 Field Measurements same value the MS2711B uses all the sampling points for integration providing the most accurate measurements The ratio of the integration bandwidth to channel span is kept constant When the integration bandwidth is changed the ratio remains the same The ratio can be chang
140. the display Use the Up Down arrow key to select a setup location and press the ENTER key to implement Chapter 3 Key Functions RECALL SETUP LIMIT MARKER SAVE DISPLAY RECALL DISPLAY SINGLE CONT PRINT Recalls a previously saved setup from memory location 1 through 10 When the key is pressed a Recall Setup selection box appears on the dis play Select a setup using the Up Down arrow key and press the ENTER key to implement Setup location 0 recalls the factory preset state Activates a menu of Limit functions including single limit multiple upper limits multiple lower limits and limit beep Activates a menu of marker functions for markers 1 through 6 Each marker when selected activates marker to peak and marker frequency to center functions Markers 2 through 4 also include delta marker functions referenced to M1 Saves the displayed trace to non volatile memory When the key is pressed TRACE NAME appears in the message area of the display Se lect the alphanumeric characters for that trace name and press the ENTER key to implement Recalls a previously saved trace from memory When the key is pressed a Recall Trace selection box appears on the display Select a trace using the Up Down arrow key and press the ENTER key to implement Toggles the units sweep mode between continuous sweep mode and sin gle sweep mode The default is continuous sweep When single sweep is selected the Anritsu HHSA will sw
141. to help discern traces when using the Trace Overlay feature see page 4 16 Step 1 Press the contrast key numeric keypad number 2 Step 2 Adjust the contrast using the UP DOWN arrow key Step 3 Press ENTER to save the new setting Setting the System Language The MS2711B can operate in English French German Spanish Chinese and Japanese To select a language Step 1 Press the SYS key Step 2 Press the Language soft key to advance through the available languages Stop when the desired language is reached Setting the System Impedance The MS2711B RF In and RF Out ports both have 50 Q impedance The firmware of the MS2711B can compensate for a 50 to 75 Q adapter on the RF In port Step 1 Press the SYS key Step 2 Press the 75 Q soft key Step 3 Press the soft key corresponding to the adapter The loss of the Anritsu 12N50 75B is pre programmed and no further action is required Step 4 If an adapter other than the Anritsu 12N50 75B is to be used press the OTHER ADAPTER OFFSET soft key Step 5 Either enter the loss value using the numeric keypad or scroll the value using the UP DOWN arrow key Step 6 Press ENTER to set the loss value Chapter 2 Quick Start Guide Making a Basic Measurement Making a basic measurement with the Anritsu HHSA is similar to making a measurement with a conventional spectrum analyzer Users need simply to power on and tune the Anritsu Hand Held Spectrum Analyzer to locate and disp
142. uccessful upload increase the RBW and VBW settings to the maximum or set the span to 0 temporarily The antennas available can be viewed by pressing the MEAS key then the FIELD STRNGTH and SELECT ANTENNA soft keys and selecting the CUSTOM list Downloading Antenna Factors All 10 antennas can be downloaded to the PC from the instrument This allows for modifi cations to the antenna factors of an antenna or the addition or deletion of available antennas from the list The antennas can then be uploaded to the instrument To download the antennas Step 1 Step 2 Step 3 Step 4 Connect the RS232 cable between the PC and the instrument Verify that the instrument is sweeping at a sweep rate faster than 5 sec onds sweep Select the Query Antenna Factors button in the Antenna Editor Modify the desired antenna s 8 9 8 10 Index A accessories llle 1 3 Adjacent Channel Power 5 9 Amplitude les 2 10 AER e ES 5 7 Annual Verification 1 8 Antenna downloading 8 9 entefing s kee ee er 8 7 8 9 Attenuation dynamic v 4 25 c eR 5 22 2 13 4 3 B Bandwidth 2 10 B ttery cc ese be arte 2 2 22 C Calibration 1 8 CDMA 4 d EEA tmm 5 3 5 3 adjacent om 5 9 AMPS TDMA 5 13 GSM 2 Eu sede
143. ulation method Due to the nature of TDMA GSM transmitters ramp RF power rapidly If the transmitter keys on too quickly users on different frequencies especially those close to the channel of interest will experience significant interference This is one of the reasons that spurious measurements are extensively used in GSM applications To make accurate and repeatable GSM measurements there are a few simple rules to fol low 7 The resolution bandwidth of the MS2711B should be set to 1 0 MHz to cover the wide GSM band The video bandwidth must be set to 100 kHz or greater to obtain the details of multiple channels in the GSM band 7 Max Hold on the MS2711B should be set to ON NOTE When Max Hold is on the MS2711B automatically turns the sweep av eraging function off Required Equipment O MS2711B Hand Held Spectrum Analyzer HHSA 30 dB 50 Watt bi directional DC 18 GHz N m Attenuator Anritsu 42N50A 30 Test Port extension cable Anritsu I5NNF50 1 5C Procedure Step 1 Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears on the display Select setup location 0 to recall the factory preset state Step 2 Using the test port extensi
144. ults will not be dis played on the screen until the correct combination of parameters is determined This will speed up the adjustment process 5 23 Chapter 5 Field Measurements Figure 5 12 shows the results with dynamic attenuation enabled Note that in this case the optional preamplifier was automatically turned on TRACE A REF LVL 40 0 dBm RBW 100kHz 30 kHz AUTO Figure 5 12 Dynamic Attenuation NOTE Decreasing the VBW to 100 kHz or lower will reduce noise around PCS signals 5 24 Chapter 6 Preamplifier Description The MS2711B is available with an optional built in preamplifier Option 8 provides the MS2711B with an additional 20 dB of sensitivity from 1 MHz to 3 GHz The preamplifier is a broadband preamplifier and thus the use of discrete filters should be considered when using it Four different bandpass filters have been added to the list of optional accessories to accommodate this need see Table 1 1 Optional Accessories This chapter provides an overview of preamplifier operation measurement example is included Preamplifier Operation To turn the preamplifier on or off Step 1 Reset the MS2711B to the factory default settings if a known starting state is de sired If the unit is off hold down the ESC CLEAR key while pressing the ON OFF key If the unit is already on press the RECALL SETUP key on the data keypad When the key is pressed a Recall Trace selection box appears
145. us menu Accesses a menu of saved trace options VIEW B Provides a trace overlay of the saved trace B with the current runtime trace A If there is currently no trace associated with trace B the RECALL TRACE B function will be activated Select a trace from the menu of saved traces to recall to the trace B buffer CLEAR B Turns off trace overlay RECALL TRACE B Recalls a saved trace into the trace B buffer BACK Returns to the previous menu NOTE Trace A is displayed as a black trace and Trace B is displayed as a gray trace Some adjustment of the display contrast see page 3 2 may be required for optimal viewing 3 8 Chapter 3 Key Functions Measurement Menu Pressing MEAS on the data keypad activates a menu of measurement related functions Use the corresponding softkey to select the measurement function FIELD STRENGTH OBW CHANNEL POWER ACPR Accesses a menu of field strength measurement options ON OFF Turns field strength measurements on or off SELECT ANTENNA Selects an antenna profile to be used for field strength measurements Refer to Chapter 8 Software Tools for more in formation on uploading antenna profiles and factors BACK Returns to the previous menu Activates the occupied bandwidth menu Select either or dBc method of occupied bandwidth measurement Refer to Chapter 6 for further infor mation on occupied bandwidth METHOD Select either the of Powe
146. wire power line outlet If power is supplied without grounding the equipment in this manner there is a risk of receiving a severe or fatal electric shock Battery Charging External Power Headphone Jack Serial Interface RF In RF Out RF Det Battery Compartment Indicator light to show that the battery is being charged The indicator light auto matically shuts off when the battery is fully charged Indicator light to show that the HHSA is being powered by the external charging unit Allows connection of audio headphones for monitoring AM FM demodulation RS232 DB9 interface to a COM port on a personal computer for use with the Anritsu Software Tools program Also provides a serial interface to a printer 50 Q RF input for spectrum analysis and stimulus response measurements 50Q RF output for Tracking Generator measurements Option 20 RF detector input for the Power Monitor Option 5 Contains the NiMH battery part number 633 27 To open turn the fastener l4 turn counter clockwise pull up and remove the battery compartment door Remove the battery by pulling straight up on the battery lanyard Replacement is the opposite of removal Chapter 2 Quick Start Guide Making Spectrum Analyzer Measurements Required Equipment O MS2711B Hand Held Spectrum Analyzer Test Port Extension Cable Anritsu 15NNF50 1 5C Selecting Spectrum Analyzer Mode Step 1 Press the ON OFF key Step 2 Press the MODE key
147. with the MS2711B Soft Carrying Case AC DC Adapter Automotive Cigarette Lighter 12 Volt DC Adapter CD ROM containing the Software Tools program Serial Interface Cable Null Modem Type Rechargeable NiMH Battery One year Warranty includes battery firmware and software User s Guide Options Option 5 RF Wattmeter Power Monitor RF detector not included Option 8 Built in 20 dB Preamplifier 1 MHz to 3 GHz Option 20 Built in Tracking Generator 10 MHz to 3 GHz Printers e 2000 766 HP DeskJet Printer with Interface Cable Black Print Cartridge and U S Power Cable e 2000 753 Serial to Parallel Converter Cable e 2000 661 Black Print Cartridge e 2000 1207 Rechargeable Battery Pack for HP 350 Deskjet e 2000 663 Power Cable Europe for DeskJet Printer e 2000 664 Power Cable Australia for DeskJet Printer e 2000 665 Power Cable U K for DeskJet Printer e 2000 667 Power Cable So Africa for DeskJet Printer e 2000 1008 Sieko DPU 414 30BU Thermal Printer with Internal Battery Thermal Printer Paper Serial Cable Power Cable e 2000 755 Five rolls of Thermal Paper e 2000 1002 U S Adapter for Seiko DPU 414 30B e 2000 1003 Euro Adapter for Seiko DPU 414 30B e 2000 1194 Japan Adapter for Seiko DPU 414 30B e 2000 1004 Battery Pack Adapter for Seiko DPU 414 30B e 2000 1012 Serial 9 pin male to 9 pin female cable for Seiko DPU 414 30B Chapter 1 General Information Optional Accessories Optional Accessorie
148. y Never use a damaged or worn out charger or battery Always use the battery for its intended purpose only Temperature extremes will affect the ability of the battery to charge allow the battery to cool down or warm up as necessary before use or charging Batteries must be recycled or disposed of properly Do not place batteries in garbage Do not dispose of batteries in a fire 2 25 Chapter 2 Quick Start Guide Symbols Table 2 1 provides a listing of the symbols used as condition indicators on the LCD display Table 2 1 LCD Icon Symbols Icon HOLD En Symbol Anritsu HHSA is in power conservation mode while operating from the battery To resume sweeping press the ENTER key After 10 minutes without a key press the Anritsu HHSA will automatically enter power conservation mode PLL Lock fail indication Check battery If the Anritsu HHSA fails to lock with a fully charged battery call your Anritsu Service Center Indicates the remaining charge on the battery The inner white rectangle grows longer as the battery charge depletes Self Test At turn on the Anritsu HHSA runs through a series of quick checks to ensure the system is functioning properly Note that the battery voltage and temperature are displayed in the lower left corner below the self test message If the battery is low or if the ambient temper ature is not within the specified operational range Self Test will fail If Self
149. y standards like JEDEC 625 EIA 625 MIL HDBK 263 and MIL STD 1686 which pertain to ESD and ESDS devices equipment and practices As these apply to the MS2711B it is recommended to dissipate any static charges that may be present before connecting the coaxial cables or antennas to the MS2711B This may be as simple as temporarily attaching a short or load device to the cable or antenna prior to at taching to the MS2711B It is important to remember that the operator may also carry a static charge that can cause damage Following the practices outlined in the above standards will insure a safe environment for both personnel and equipment Chapter 1 General Information Anritsu Service Centers Table 1 3 provides a listing of the Anritsu Service Centers Table 1 3 Anritsu Service Centers UNITED STATES ANRITSU COMPANY 685 Jarvis Drive Morgan Hill CA 95037 2809 Telephone 408 776 8300 FAX 408 776 1744 ANRITSU COMPANY 10 NewMaple Ave Suite 305 Pine Brook NJ 07058 Telephone 973 227 8999 FAX 973 575 0092 ANRITSU COMPANY 1155 E Collins Blvd Richardson TX 75081 Telephone 1 800 ANRITSU FAX 972 671 1877 AUSTRALIA ANRITSU PTY LTD Unit 3 170 Foster Road Mt Waverley VIC 3149 Australia Telephone 03 9558 8177 FAX 03 9558 8255 BRAZIL ANRITSU ELECTRONICA LTDA Praia de Botafogo 440 Sala 2401 CEP22250 040 Rio de Janeiro Ru Brasil Telephone 021 527 6922 FAX 021 53 71 456 CANADA

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