Agilent PSA Series Spectrum Analyzers E4406A Vector Signal
Contents
1. E4440A BAB Replaces type N input connector APC 3 5 connector E4440A only Amplifiers E444xA 1DS 100 kHz to 3 GHz built in preamplifier Ordering Information continued Inputs and outputs E4440A BAB Replaces type N input connector with APC 3 5 connector E444xA H70 70 MHz IF output excludes Option 122 Connectivity software E444xA 230 BenchLink web remote control software E4440A 235 PSA wide bandwidth digitizer calibration wizard requires Option 122 Accessories E444xA 1CM Rack mount kit E444xA 1CN Front handle kit E444xA 1CP Rack mount with handles E444xA 1CR Rack slide kit E444xA 045 Millimeter wave accessory kit E444xA 0B1 Extra manual set including CD ROM E444xA 0B0 Delete manual set Warranty and service Standard warranty is 36 months R 51B Return to Agilent warranty and service plan Calibration For 3 years order 36 months of the appropriate calibration plan shown below R 50C 001 Standard calibration R 50C 002 Standards compliant calibration E444xA OBW Service manual and calibration software E444xA UK6 Commercial calibration certifi cate with test data E4406A vector signal analyzer E4406A 7 MHz to 4 GHz Options To add options to a product use the following ordering scheme Model E4406A Example options E4406A BAH Digital demodulation measurements E4406A BAF W CDMA measurement personality E4406A 210 Requires Option BAF E4406A B78 cdma2000 measurement pe2. average mode and type In this section measure power versus time for the GSM signal then view only the rising and falling portions of the burst Instructions On the PSA Keystrokes Activate power versus time measurement MEASURE GMSK Pwr vs Time Zoom in on RF envelope Figure 1 AMPLITUDE Ref Value 10 dBm Scale Div 0 2 dB View the shape of the rising and falling parts of the burst Figure 2 Trace View Rise amp Fall Expand the rising edge display You can toggle between the three display Next Window until the upper left part of the display is highlighted in green Zoom sections by pressing the Next Window key Zoom in on the trace AMPLITUDE Ref Value 8 5 dBm Scale Div 0 5 dB Turn on averaging and display maximum and Meas Setup Avg Bursts On Avg Type minimum averaged traces Figure 3 Max amp Min Observe the different types of averaging available under the Avg Type menu Deactivate averaging and view full display Figure 1 GSM power versus time measurement Figure 2 Rising and falling edges of GSM burst Avg Bursts Off Zoom GSM w EDGE BIS GMSK Power vs Time Ch Freq 935 200 MHz TSC Auto P GSM Mean Transmit Power 10 41 dBm RF Envelope 635 08 ps 5 00 ps Res BH 500 000 kHz Samples 3501 points 200 00 ns Current Data Max Pt 10 24 dBm B
3. 5 dB 76 9 dB GSM EDGE 81 5 dB 81 3 dB 85 6 dB 85 1 dB 91 0 dB 89 4 dB 90 3 dB 90 2 dB 94 0 dB 93 7 dB 72 1 dB 75 9 dB 80 2 dB 84 6 dB 1 For specifications on the E4406A VSA please refer to the E4406A VSA data sheet literature number 5968 3030E PSA Series Key Specifications continued Phase and frequency error measurement GSM Carrier power range at RF input Phase error RMS floor RMS measurement accuracy Peak phase error accuracy Frequency error accuracy 1 0 origin offset DUT maximum offset Analyzer noise floor Burst sync time uncertainty Trigger to TO time offset relative offset accuracy EVM measurement EDGE Carrier power range at RF input EVM Operating range Floor RMS Accuracy EVM range 1 to 10 Frequency error accuracy Trigger to TO time offset relative offset accuracy 27 to 45 dBm nominal 0 5 t 0 5 2 0 5 Hz transmitter frequency x frequency reference accuracy 15 dBc nominal 50 dBc nominal 0 1 bit approximately 0 4 us 5 0 ns nominal 24 to 45 dBm nominal 0 to 25 nominal 0 5 0 3 typical 0 5 1 Hz transmitter frequency x frequency reference accuracy 5 0 ns nominal Ordering Information 14 PSA Series spectrum analyzer E4443A 3 Hz to 6 7 GHz E4445A 3 Hz to 13 2 GHz E4440A 3 Hz to 26 5 GHz E4446A 3 Hz to 44 GHz E4448A 3 Hz to 50 GHz Options To add options to a product use the following orderin
4. 56 38 48 EEE it PSA Series Key Specifications GSM with EDGE measurement personality The following specifications apply to models E4443A 45A 40A only Models E4446A and E4448A have similar but not warranted performance Power versus time measurement GSM EDGE Minimum carrier power at RF input Absolute power accuracy for in band signal excluding mismatch error Attenuation gt 2 dB Power ramp relative accuracy referenced to mean transmitted power RF input range auto 6 dB to noise Mixer Level x 12 dBm 0 to 6 dB 0 to noise Mixer level 118 dBm 6 dB to noise Measurement floor Time resolution Burst to mask uncertainty Output RF spectrum measurement GSM EDGE Minimum carrier power at RF input ORFS relative RF power uncertainty Due to modulation Offsets lt 1 2 MHz Offsets 2 1 8 MHz Due to switching ORFS absolute RF power accuracy attenuation gt 2 dB Dynamic range spectrum due to modulation Offset frequency 100 kHz 200 kHz 250 kHz 400 kHz 600 kHz 1 2 MHz 1 8 MHz 6 0 MHz Dynamic range spectrum due to switching Offset frequency 400 kHz 600 kHz 1 2 MHz 1 8 MHz 40 dBm nominal 0 11 0 66 dB 0 11 0 18 dB typical 0 13 dB 0 13 dB 0 08 dB 0 08 dB 88 dBm input attenuation nominal 200 ns 0 2 bit approximately 0 7 us 20 dBm nominal 0 15 dB 0 25 dB 0 15 dB nominal 0 72 dB 0 18 dB typical GSM EDGE 67 3 dB 74
5. EDGE signal has considerable inter symbol interference ISI Agilent s proprietary ISI compensation algorithm provides both a clear constellation diagram and accurate EVM measurements 11 12 Figure 14 EDGE EVM measurement with polar vector plot Figure 15 EDGE demodulated data bits GSM w EDGE View Trace BTS EDGE EVM P 6SM Ch Freq 935 200 MHz TSC Ruto Polar Vector Pass Polar Constin 1 Q Measured Polar Vector vg 0 32 0 32 Max Avg 0 827 0 827 957tile EVM 0 52 Z Mag Error 90 212 I Q Error Quad View Data Bits SES Phas Error 0 22 x Freq Error 947 65 mH IZQ Origin Offset 58 29 dB Amplitude Droop 142 syms 8 01 dB TSC I T0 Offset 279 676 ps Agilent GSM w EDGE Li View Trace Ext Ref BTS Ch Freq 935 200 MHz TSC Auto Polar Vector EDGE EVM P 6SM Pass Polar Constin RMS EVM 9 32 Z Avg Mode Repeat Pk EVM 0 82 Zpk at symbol 131 95 tile EVM 0 52 Trig RF Burst Phase Error 0 22 IF Wideband Quad View Freq Error 947 65 mHz Sync Training Seq I Q Offset 58 29 dBc TSC 6 Data Bits TO Offset 279 676 ps Demodulated Data Bits octal Training Sequence Highlighted 8 18 28 5025517662 2267711523 1401431215 1376426165 4547437350 58 68 78 88 98 1533354077 1771711177 7717771771 7111553725 2012257135 118 128 138 148 108 6016351172 7242200341 3666320736 0777017370
6. band Preset Frequency More Freq Channels Channel Band GSM Edge Bands P GSM Base Freq Channels On Select EDGE mode and data format Mode Real Time TDMA EDGE Data Format Framed Turn on EDGE modulation EDGE On Set the amplitude to 10 dBm Amplitude 10 dBm Turn on RF output RF On On the PSA Make the EDGE power versus time measurement Figure 13 Observe the greater amplitude variations within the burst compared to the GSM signal MEASURE More EDGE Pwr vs Time Measure EDGE ORFS MEASURE More EDGE Output RF Spectrum Activate the EDGE EVM measurement Figure 14 MEASURE More EDGE EVM View error and EVM plots Trace View I O Error Examine the demodulated data bits Figure 15 Figure 13 Data Bits EDGE power versus time BTS Ch Freq 935 200 MHz TSC Auto P GSM EDGE Power vs Time Ref 0 00 dBm GSM w EDGE Tx Band Spur RF Envelope 10 00 dB MaxP EDGE Pwr vs Time 0 3 ExtAt 9 0 Sync TSeq EDGE Output ZW RF Spectrum 65 00 ps i Res BH 500 000 kHz Mean Transmit Power 10 20 dBm 635 00 ps Samples 3501 points 200 00 ns EDGE Current Data Tx Band Spur Max Pt 7 10 dBm Burst Width 553 80 ps Min Pt 109 43 dBm Mask Ref Pwr Midamble 10 35dBm 239 0us 297 8us 1 Though the
7. interference T Lo cti es Activate the ORFS measurement Figure 8 MEASURE GMSK Output RF Spectrum with other frequency bands The default setting measures spectrum due to Measuring the spectrum due to modulation at multiple offsets This measurement modulation can be thought of as takes about one second to complete making an adjacent channel power ACP measurement where several adjacent channels are considered Examine spectrum due to modulation at a Meas Setup Meas Method Single Offset single offset 250 kHz Figure 9 Now measure the spectrum due to switching Meas Type Switching GSM transmitters ramp RF power Go back to multi offset measurement Meas Method Multi Offset rapidly The transmitted RF carrier Observe that this measurement is completed power versus time measurement in about 2 seconds is used to ensure that this process Restore the default measurement More Restore Meas Defaults Return happens at the correct times and happens fast enough However if View ORFS with mask Figure 10 Meas Method Swept RF power is ramped too quickly This measurement takes several seconds undesirable spectral components to complete will arise in the transmitted signal This upsets the spectrum due to switching which again results in Figure 8 interference with other frequency ORFS spectrum due 9 GSM_W EDGE mi easure Ext Ref bands to modulation BIS Ch Freq 935
8. 200 MHz TSC Auto P GSM GSM 4 EDGE Measure Transmit Pwr Averages 50 Pass 00 ps Res BH 500 000 kHz Mean Transmit Power Above Threshold GMSK Ref 0 00 dBm RF Envelope Pwr vs Time 10 00 dB GMSK MaxP Phase amp Freq 0 3 ExtAt GMSK Output 9 0 E RF Spectrum Trig Spectrum Burst Freq Domain 0 00 700 00 ps Samples 3501 points 200 00 ns Amplitude Threshold 16 23 dBm Current Data Maveform Time Domain 10 41 dBm Mean Transmit Pwr 10 42 dBm More Thresh Pts 2794 Max Pt 10 22 dBm Min Pt 112 72 dBm 1 of 2 Instructions Keystrokes On the ESG Increase the GSM signal amplitude Amplitude 15 dBm On the PSA Measure transmitter band spurious emissions MEASURE More GMSK Tx Band Spur Figure 12 Figure 12 GMSK transmitter Jt Agilent GSM w EDGE Measure band spurious Ref 0 00 dBm 10 00 BTS Ch Freq 935 200 MHz TSC Auto GMSK Xmtr Tx Band Spur P GSM Averages 30 pass Spectrum dB MaxP 15 7 ExtAt 9 0 Trig Free 937 00 MHz Res BH 30000 00 Segment Upper Rdjacent Worst Spur Marker Offset Freq 1 95 MHz 941 20 MHz Mean Transmit Power 14 77 dBm from Limit from Carrier 32 32 dB 83 10 dBc EDGE measurements EDGE has the
9. 200 MHz TSC Auto Transmit Pwr GMSK Output RF Spectrum P GSM 100 807of 20Avg PASS This exercise explores the ORFS PUE usd measurement using the PSA Modulation Ref Power 17 37 dBm 30 000kHz 7 Offset Freq List Short Sync RF R Trig Burst GMSK Lower Upper Phase amp Freq Offset Freq Res BH dB dBm dB dBm m 200 000 kHz 30 000 kHz 37 84 55 22 37 23 54 60 GMSK Output 250 000 kHz 30 000 kHz 41 71 59 09 42 20 59 58 RF Spectrum 400 000 kHz 30 000 kHz 69 32 86 70 69 44 86 81 600 000 kHz 30 000 kHz 81 68 99 05 80 84 98 22 1 20000 MHz 30 000 kHz 81 00 98 38 80 68 98 06 Spectrum 1 80000 MHz 100 000 kHz 75 74 93 11 76 30 93 67 Freq Domain Waveform Time Domain More 1 of 2 Spectrum due to modulation and spectrum due to switching measurements are usually grouped together and known as the output RF spectrum ORFS The GSM 3GPP Third Generation Partnership Project specifications have particular restrictions on ORFS for a series of frequencies Verification of compliance with the 3GPP requires up to 80 dB of dynamic range The PSA Series has more than enough dynamic range to accomplish this and a complete ORFS measurement modulation and switching can be performed in 3 seconds Another great feature of the PSA s ORFS measurement is its ability to represent the spectrum due to modulation data in either a traditional table format or a spectrum trace with a mask Both the table and the mask us
10. 89 fax 800 820 2816 Europe tel 31 20 547 2111 Japan tel 81 426 56 7832 fax 81 426 56 7840 Korea tel 080 769 0800 fax 080 769 0900 Latin America tel 305 269 7500 Taiwan tel 0800 047 866 fax 0800 286 331 Other Asia Pacific Countries tel 65 6375 8100 fax 65 6755 0042 Email tm_ap agilent com Contacts revised 05 27 05 Product specifications and descriptions in this document subject to change with out notice Agilent Technologies Inc 2005 2004 2002 Printed in USA July 20 2005 5988 2389EN Agilent Technologies
11. Agilent PSA Series Spectrum Analyzers E4406A Vector Signal Analyzer GSM with EDGE Measurement Personality Technical Overview with Self Guided Demonstration Option 202 Dre The PSA Series of high performance spectrum analyzers and E4406A vector signal analyzer VSA offer the GSM with EDGE measurement personality to help you measure radio systems quickly easily and accurately in the lab or on the manufacturing line OE Agilent Technologies Evaluate Your Designs Quickly and Thoroughly in R amp D and Manufacturing The Global System for Mobile Communications GSM digital cellular standard is a time division multiple access TDMA multiplexing scheme that uses Gaussian minimum shift keying GMSK modulation Making GSM measurements and meeting standards requirements presents unique challenges Enhanced Data Rates for GSM Evolution EDGE which is also TDMA but uses 31 8 8PSK phase shift keying modulation is an enhancement to GSM that promises to deliver true third generation 3G wireless services such as multimedia and other broadband applications GMSK power versus time page 4 Phase and frequency page 6 le BIS Ch Freq 935 200 Wii TSC Auto EDOE EVK The Agilent PSA Series offers high performance spectrum analysis up to 50 GHz with powerful one button measurements a versatile feature set and a leading edge combination of flexibility speed accuracy and dynamic range Expand the PSA to
12. TS Ch Freq 935 200 MHz TSC Auto GMSK Phase amp Frequency P GSM Pass Timeslot 2 Phase Error I Q Measured Polar Vector 0 15 rms 0 43 pk at bit 139 60 x Freq Error 0 09 Hz 1 Q Offset 65 51 dBc Avg Type Maximum TO Offset 1 486 ms m I Sync TSeq Trig Ext R I Q Error Quad View I Q Measured Polar Vector DEN Data Bits ut GSM w EDGE J View Trace BTS Ch Freq 935 200 MHz TSC Auto GMSK Phase amp Frequency P GSM Phase Error 6 15 rms Avg Type Maximum 0 43 pk at bit 139 60 Freq Error 0 09 Hz Trig Ext R 1 0 Offset 65 51 dBc Sync TSeq TO Offset 1 486 ms Demodulated Data Bits Training Sequence Highlighted a 18 28 38 48 0001111000 1111101110 1000001101 0110110111 0110000010 58 68 78 88 98 1101011111 60001001011 1000010001 0010111001 0101010000 188 118 128 138 148 0010100101 0111100101 1101110000 0011100111 01001000 GMSK output RF spectrum ORFS The modulation process in a Instructions Keystrokes transmitter causes the continuous On the ESG wave CW carrier to spread spectrally This is referred to as spectrum Return to a single timeslot signal Timeslot 2 Enter Timeslot Off due to modulation and wideband On the PSA noise Defects in the transmit chain Set analyzer to make measurements on FREQUENCY Timeslot Off may cause the spectrum to spread default timeslot excessively resulting in
13. ans that Agilent offers a wide range of additional expert test and measurement services which you can purchase according to your unique technical and business needs Solve problems efficiently and gain a competitive edge by contracting with us for calibration extra cost upgrades out of warranty repairs and onsite education and training as well as design system integration project management and other professional engineering services Experienced Agilent engineers and technicians worldwide can help you maximize your productivity optimize the return on investment of your Agilent instruments and systems and obtain dependable measurement accuracy for the life of those products P Agilent Open www agilent com find open Agilent Open simplifies the process of connecting and programming test systems to help engineers design validate and manufacture electronic prod ucts Agilent offers open connectivity for a broad range of system ready instruments open industry software PC standard 1 0 and global support which are combined to more easily integrate test system development www agilent com For more information on Agilent Technologies products applications or services please contact your local Agilent office The complete list is available at www agilent com find contactus Phone or Fax United States tel 800 829 4444 fax 800 829 4433 Canada tel 877 894 4414 fax 800 746 4866 China tel 800 810 01
14. are similar to GSM measurements the greater part of this guide addresses GSM meas urements The last part concentrates on the EDGE measurements particularly where they are different from GSM The PSA Series with this optional measurement personality can make complex GSM and EDGE measurements easy Begin by connecting the ESG s 50 O RF output to the PSA s 50 RF input with a 50 Q RF cable Turn on the power in both instruments For multi slot measurements the PSA will need an external trigger signal from the ESG Connect the EVENT 1 output on the rear panel of the ESG to the TRIGGER IN input on the rear panel of the PSA with a 50 Q BNC connector cable Model number E4438C Product type ESG vector signal generator PSA Series spectrum analyzer E4440A E4443A E4445A E4446A E4448A Instructions On the ESG Required options 001 or 002 baseband generator 402 TDMA personalities B7J Digital demodulation hardware 202 GSM with EDGE measurement personality Keystrokes Choose GSM 900 frequency band Preset Frequency More Freq Channels Channel Band GSM Edge Bands P GSM Base Freq Channels On Select GSM mode and data format Mode Real Time TDMA GSM Data Format Framed Turn on GSM modulation GSM On Set the amplitude to 10 dBm Amplitude 10 dBm Turn on RF output RF On On the PSA Perform factory preset Skip this st
15. d bits GSM phase and frequency parameters burst averaging average mode mean or max averaging type selectable test limits IQ origin offset on off In this section a one button measurement captures the phase and frequency error information Instructions On the PSA Keystrokes Measure GMSK phase and frequency error MEASURE GMSK Phase amp Freq Enable the external trigger The two vertical white bars in the RF Envelope plot in the lower left part of the display indicate which timeslot is being measured Meas Setup Trig Source Ext Rear Make the measurements on timeslot 2 Figure 5 Notice the bars in the lower left display move to timeslot 2 with zoom FREQUENCY Timeslot On 2 Enter View the polar vector diagram Figure 6 Trace View I O Measured View the demodulated and Q bits Figure 7 Data Bits Figure 5 5 Agilent Phase and cas frequency error BTS Ch Freq 935 200 MHz TSC Auto GMSK Phase amp Frequency P GSM RF Envelope Ref 0 00 x 10 00 dB 994 00 ps 1 8936 ms Ref 0 00 Phase Err w Freq 5 00 500 00 mbit 147 50 bit Phase Error 0 15 rms 0 43 pk at bit 139 60 6 09 Hz 65 51 dBc Maximum 1 486 ms Freq Error I Q Offset fivg Type TO Offset Figure 6 1 0 polar vector plot Figure 7 land Q demodulated bits 7 Agilent GSM w EDGE View Trace Ext Ref B
16. e a pass fail indicator to signify compliance with the 3GPP specification GSM EDGE output RF spectrum parameters burst averaging measurement types from modulation and switching modulation switching or full frame modulation multi offset single offset or swept method short standard or custom frequency offsets fast averaging RBWs at various offsets Figure 9 ORFS spectrum due GSM_w EDGE to modulation and ee BTS Ch Freq 935 200 MHz TSC Auto switching at 250 kHz GMSK Output RF Spectrum P GSM 108 00zof 20Avg PASS Ref 0 00 dBm Meas Type RF Envelope Modulation 0 0000 ps Single Offset Examine at 250 000 kHz Modulation Switching 30 000 kHz 41 76 dB 60 16 dBm 30 000 kHz 0 00 dB 0 00 dBm Figure 10 ORFS with mask Agilent Meas Setup GSM_w EDGE Ref 10 00 dBm 10 00 dB MaxP 0 3 ExtAt 0 0 Sync RF A Trig Burst Modulation Worst Freq 935 359 MHz BTS Ch Freq 935 200 MHz TSC Auto GMSK Output RF Spectrum P GSM Ref Power 20 16 dBm 30 00 kHz Offset Freq 158 691 kHz Power 40 88 dBm Ext Ref Avg Bursts 20 100 807of 20Avg PASS On Off Meas Type Spectrum Modulation Tt T from Limit a from Ref 2 15 dB 20 72 dB 1 Remote operation with SCPI commands Transmit power Carrier power is the measure of in channel power for GSM systems Mob
17. ep for E4406A VSA System Power On Preset Preset Type Factory Enter the GSM with EDGE mode in the analyzer Preset Mode GSM w EDGE Verify setup for GSM 900 band Mode Setup Radio Band P GSM Set center frequency to absolute RF channel number ARFCN 1 935 2 MHz 1 Absolute radio frequency channel number FREQUENCY ARFCN 1 Enter GMSK power versus time GSM is a TDMA multiplexing scheme with eight time slots or bursts per frequency channel If the burst does not occur at exactly the right time or if the burst is irregular then adjacent channels can experience interference Because of this industry standards specify a tight mask for the fit of the TDMA burst Easily measure the RF envelope of a GSM EDGE burst and receive pass fail result based on the GSM EDGE standard This measurement provides a visual display of power versus time helping you see transient characteristics at the edges of a burst or power control throughout the burst This measurement also allows you to focus on the rise and fall time of the burst or the whole burst and provides an on screen mask to help you visually determine where any violations may occur You control the following unique GSM EDGE power versus time measurement parameters measurement time defaults to 1 slot power control level burst search threshold number of bursts to average over RBW filter width and shape
18. g scheme Model E444xA x 0 3 5 6 or 8 Example options E4440A B7J E4448A 1DS Digital demodulation hardware E444xA B7J Digital demodulation hardware required for cellular communication measurement personalities Cellular communication measurements E444xA BAF W CDMA measurement personality requires Option B7J E444xA 210 HSDPA measurement personality requires Options B7J and BAF E444xA 202 GSM w EDGE measurement personality requires Option B7J E444xA B78 cdma2000 measurement personality requires Option B7J E444xA 214 1xEV DV measurement personality requires Options B7J and B78 E444xA 204 1xEV DO measurement personality requires Option B7J E444xA BAC cdmaOne measurement personality requires Option B7J E444xA BAE NADC PCD measurement personality requires Option B7J E444xA 211 TD SCDMA measurement personality General purpose measurements E444xA 226 Phase noise measurement personality E444xA 219 Noise figure measurement personality E444xA 241 Flexible digital modulation analysis measurement personality E444xA 266 Programming code compat ibility suite Hardware E444xA 1DS 100 kHz to 3 GHz built in preamplifier E444xA B7J Digital demodulation hardware E4440A 122 80 MHz bandwidth digitizer E4440A only excludes H70 E444xA 123 Switchable MW preselector bypass E4440A 43A 45A only excludes AYZ E444xA 124 Y axis video output E444xA AYZ External mixing E4440A 46A 48A only excludes 123
19. ile devices and base stations must transmit enough power with sufficient modulation accuracy to maintain a call of acceptable quality without the power leaking into other frequency channels or timeslots GSM systems use dynamic power control to ensure that each link is maintained with minimum power This gives two fundamental benefits overall system interference is kept to a minimum and in the case of mobile stations battery life is maximized In this section measure the mean transmitter carrier power and view the signal with high dynamic range GMSK transmitter band spurious Transmitter band spurious is a measurement that identifies undesirable energy in wrong parts of the transmitter band This measurement reveals little more than the switching due to modulation and wideband noise measurement however it is a swept measurement with no time gating Make this one button measurement on the PSA Sufficient power is required at the input for optimum dynamic range and the PSA will automatically set the attenuation level whenever the measurement is restarted Restart key 10 Instructions On the PSA Keystrokes Measure transmit power Figure 11 MEASURE Transmit Pwr Move the threshold level to 40 dB Notice the horizontal white level bar move down Figure 11 Meas Setup Threshold Lvl 40 dB Transmit power measurement BTS Transmit Power Ch Freq 935
20. include GSM and EDGE digital signal analysis capability with the GSM with EDGE measurement personality Option 202 For many manufacturing needs the E4406A VSA a vector signal analyzer is an affordable platform that also offers the GSM with EDGE personality This technical overview includes measurement details demonstrations PSA Series key specifications for GSM with EDGE measurements ordering information related literature All demonstrations utilize the PSA Series and the E4438C ESG vector signal generator however they can also be performed with the E4406A VSA Keystrokes surrounded by indicate hard keys located on the front panel while key names surrounded by indicate soft keys located on the right edge of the display Transmit power page 10 e i 9 t EDGE e measurements page 11 PSA Series spectrum analyzer Hm Output RF spectrum page 8 Agent a E BIS Ch Freq 935 200 MHz TSC Rute GNSK Power vs Tine OSH w EDOE posu dass RF Envelope OODE poong OEC B CJ GMSK transmitter band spurious page 10 iy E4406A vector signal analyzer Key specifications page 13 fe 5 s o Ordering Lil information myama page 15 Demonstration preparation The following options are required for the ESG and the PSA Series Since many essential EDGE transmitter measurements
21. ormation on the E4406A VSA or the PSA Series please visit www agilent com find vsa www agilent com find psa E Agilent Email Updates www agilent com find emailupdates Get the latest information on the products and applications you select 9 Agilent Direct www agilent com find agilentdirect Quickly choose and use your test equipment solutions with confidence Agilent Technologies Test and Measurement Support Services and Assistance Agilent Technologies aims to maximize the value you receive while minimizing your risk and problems We strive to ensure that you get the test and meas urement capabilities you paid for and obtain the support you need Our extensive support resources and services can help you choose the right Agilent products for your applications and apply them suc cessfully Every instrument and system we sell has a global warranty Two concepts underlie Agilent s overall support policy Our Promise and Your Advantage Our Promise Our Promise means your Agilent test and measure ment equipment will meet its advertised per formance and functionality When you are choosing new equipment we will help you with product information including realistic performance specifications and practical recommendations from experienced test engineers When you receive your new Agilent equipment we can help verify that it works properly and help with initial product opera tion Your Advantage Your Advantage me
22. rsonality E4406A 214 Requires Option B78 E4406A 202 EDGE with GSM measurement personality E4406A 204 1xEV DO measurement personality E4406A BAH GSM measurement personality E4406A BAC cdmaOne measurement personality E4406A BAE NADC PDC measurement personality E4406A HN1 WIDEN IDEN measurement personality Inputs and outputs E4406A B7C 1 0 inputs Connectivity software E444xA 230 BenchLink Web Remote Control Software Warranty and service Standard warranty is 36 months R 51B Return to Agilent warranty and service plan Calibration For 3 years order 36 months of the appropriate calibration plan shown below R 50C 001 R 50C 002 Standard calibration Standards compliant calibration 1 Options not available in all countries Product Literature Selecting the Right Signal Analyzer Jor Your Needs selection guide literature number 5968 3413E PSA Series literature PSA Series brochure literature number 5980 1283E PSA Series data sheet literature number 5980 1284E E4406A VSA literature E4406A VSA brochure literature number 5968 7618E E4406A VSA data sheet literature number 5968 3030E Application literature Understanding GSM EDGE Transmitter and Receiver Measurements for Base Stations and Components application note literature number 5968 2320E Measuring EDGE Signals New and Modified Techniques and Requirements application note literature number 5980 2508E For more inf
23. same spectral characteristics as GSM as well as the same symbol rate and frame structure Table 1 Therefore many of the EDGE measurements are almost if not exactly identical to the GSM measurements The only measurement that is significantly different between the two signal formats is modulation accuracy The critical metric for GSM is phase error For EDGE the modulation quality metric is error vector magnitude EVM EDGE EVM settings averaging amount type selectable limits based on test conditions e extreme limits on off droop compensation on off frequency error tolerance range wide narrow This measurement lets you easily analyze the EVM of an EDGE radio with a constellation diagram and a tabular list of measurement results This display helps diagnose modulation or amplification distortions that lead to bit errors in the receiver Agilent s unique algorithm provides a zero ISI inter symbol interface constellation that maintains the same pinpoint accuracy and methods for diagnosis as the traditional This exercise explores some of the EDGE measurements with emphasis on the EVM measurement Table 1 Representative specifications for GSM and EDGE signal formats GSM EDGE Modulation GMSK 31 8 8PSK Bits symbol 1 3 Data bits per burst 114 342 Symbol rate 210 833 kHz 270 833 kHz Filter 0 3 Gaussian Linearized Gaussian Instructions On the ESG Keystrokes Choose GSM 900 frequency
24. up Trig Source Ext Rear Switch to multi slot view in the power versus time measurement Trace View Multi Slot View the entire frame 8 slots Figure 4 Figure 4 Multi slot power versus time Agilent BTS GMSK Power vs Time Ref 0 00 dBm gt Ch Freq 935 200 MHz TSC Auto Meas Setup Meas Time 8 Enter Meas Setup Avg Bursts 10 GSM w EDGE Pass P GSM RF Envelope 10 00 dB MaxP 0 3 Meas Time ExtAt 9 0 8 Slots Syne TSea Trig Ext R 118 20 R Timeslot Output Par dBm 0 10 43 1 adm 2 10 38 3 den Trig Source Ext Rear Samples 23693 points 200 00 ns Timeslot Output Pr dBm 1st Error Pt Burst Sync Training Seq GMSK phase and frequency Phase and frequency error are the measures of modulation quality for GSM systems Since GSM systems use relative phase to transmit information phase and frequency accuracy are critical to the system s performance In a real system poor phase error will reduce the ability of a receiver to correctly demodulate Demodulation and signal analysis required by industry standards is further complicated by the challenges of triggering and synchronizing to the actual GSM signal The Agilent PSA Series has multiple trigger and synchronization options to make measurements simple Diagnose and correct modulation errors with displays of phase error versus time and demodulate
25. urst Hidth 556 00 ps Min Pt 113 46 dBm E x AS GSM w EDGE Trace View BTS Ch Freq 935 200 MHz TSC Auto GMSK Power vs Time Burst P GSM Mean Transmit Power TOW 592 80 ps points 200 00 ns ACA a 50 00 ps Res BH 500 000 kHz Samples 3501 Current Data Max Pt 10 36 dBm Min Pt 136 02 dBm Burst Hidth 556 00 ps 10 52 dBm The PSA is also able to measure power versus time for multiple slots at the same time Multi slot views give information about the entire GSM frame This is especially useful for examining slots that transmit at different power levels within a single frame Now experiment with the multi slot capabilities of the PSA Figure 3 Rising edge with averaging GMSK Power vs Time Agilent GSM w EDGE RvgType Pwr Rvg BIS Ch Freq 935 200 MHz TSC Auto ML P GSM Averages 10 PASS Ref 8 50 dBm Log Pwr Avg Video RF Envelope adc cd Maximum Max amp Min 50 00 ps Res BH 500 000 kHz 50 00 ps Samples 3501 points 200 00 ns Instructions On the ESG Keystrokes Add another timeslot On the PSA Mode Real Time TDMA GSM Configure Timeslots Timeslot 2 Enter Timeslot Type Normal All Timeslot On Enable the external trigger Meas Set
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