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Agilent Technologies E4406A Satellite Radio User Manual

1. Auto Align Defaults to the alert state When set to Alert the auto align feature causes a message to appear 24 hours after the last alignment to alert tell you that the instrument needs to be aligned This message will also appear if there is a change of ambient temperature greater than 3 C Use the Align All Now key When set to the On state an alignment which slows down measurements automatically occurs every 5 minutes or when a change in ambient temperature of greater than 3 C has occurred e Align All Now Immediately activates an alignment on all of the instrument s standard RF IF and ADC alignments All other operations are stopped and the alignments progress will be visible on the display Chapter 2 77 Using System Features Using System Configuration and Alignment Keys Align Subsystem Allows you to activate one or a group of the standard internal instrument alignments Perform alignments on circuitry relating to the following internal alignments Press the ESC key to cause any alignment to stop Align RF Activates an alignment on the RF circuitry Align IF Activates an alignment on the IF circuitry The main gain of the Analog IF is used to compensate for prefilter BW gain variations so the gain of the entire IF path before the A D remains constant Align ADC Activates an alignment on the ADC circuitry Align 50 MHz Reference Enables a service technician to adjust the amplitude
2. Make sure the ACP measurement is selected under the MEASURE menu The Meas Setup key accesses the menu which allows you to modify the average number and average mode for this measurement In addition the following parameters for adjacent channel power measurements can be modified e Ref Channel Allows you to access the following parameters for the reference channel settings Chan Integ BW Allows you to specify the channel integration bandwidth in which the carrier power is measured The range is 1 000 kHz to 20 0000 MHz with the best resolution of 1 Hz Avg Type Choose the averaging type between Pwr Avg RMS and Maximum Ref Chan Adv Allows you to access the menu to change the following advanced parameters for the reference channel Sweep Time Allows you to select Man or Auto default mode Chapter 4 125 Making Measurements Making the Adjacent Channel Power ACP Measurement Data Points The automatic mode chooses the optimum number of points for the fastest measurement time with acceptable repeatability The minimum number of points that could be used is determined by the sweep time and the sampling rate You can increase the length of the measured time record capture more of the burst by increasing the number of points but the measurement will take longer Res BW This key is always grayed out However it allows you to see the resolution bandwidth that is derived from the combination of sweep time data p
3. 983 ulnjoy Gea Gre gel MOPUIM UONEDIAEN jauueyd PEIEE LE fr qld g ames A dnjas qld alld ewes ueyo 48 poweaj 196611 wua s s yndu sg SIN 3913q SOd 996 YIL P1epuejs oipey Joye 101 u09 seo yeysay Ae dsiq aJe9s A 30NLIIdINV aJe9s X NVdS MOLA O I MALA WINdj0ed syw paoueapy leonosues6us Burbesany 23 Chapter 1 Getting Started Front Panel Description Front Panel Description Key menus may vary depending on the currently selected mode or measurement Softkeys which are not available for use are greyed out Keys may be greyed out as a result of the current setting of other inter related functions not having a required password or license key or not having some piece of optional hardware that is required Paths to access any feature will be found in the key access table on page 53 Display annotation is explained on page 33 Operation of the 3 5 inch floppy drive is covered in the section on printing on page 63 A O ogn E a oS 9 l Ge Qe E A z eai DOS O ODO
4. DB25 Female ca813a Chapter 1 Getting Started Cables for Connecting to the Serial Port RS 232 Figure 1 16 HP 24542U Cable with 5181 6639 Adapter 24542U 5181 6639 Instrument Cable Adapter Black 1 1 1 1 2 Ml Peje ae 3 3 3 3 4 4 4 4 6 6 6 6 5 e s lt 8 8 8 8 9 9 9 9 DB9 DB9 DB9 DB9 DB9 DB9 Male Female Female Male Male Female ca814a Figure 1 17 HP F1047 80002 Cable with 5181 6641 Adapter F1047 80002 5181 6641 Instrument Cable Adapter Black i 1 2 gt 3 3 3 4 4 4 4 5 6 6 6 7 gt 3 x 8 8 8 20 Y 9 9 DB9 DB9 DB9 DB9 DB25 DB25 Male Female Female Male Female Male ca815a Figure 1 18 HP F1047 80002 Cable with 5181 6640 Adapter F1047 80002 5181 6640 Instrument Cable Adapter White PC Printer 1 1 1 2 2 gt lt gt 3 3 3 4 4 4 4 5 6 6 6 7 s gt lt 3 x 8 8 8 20 9 9 9 DB9 DB9 DB9 DB9 DB25 DB25 Male Female Female Male Male Female ca816a Chapter 1 45 Getting Started Cables for Connecting to the Serial Port RS 232 Figure 1 19 HP F1047 80002 Cable with 5181 6642 Adapter F1047 80002 5181 6642 Instrument Cable Adapter Gray 1 1 1 2 mm e 3 3 3 4 4 4 4 5 6 6 6 7 s gt lt 3 x 8 8 8 20 Y Y 9 22 DB9 DB9 DB9 DB9 DB25 DB25 Male Female Female Male Male Female ca817a Figure 1 20 HP F 1047 80002 Cable with 5181 6639 Adapter F1047 80002 5181 6639 Instrument Cable Adapter Black Modem 1 1 1 1
5. And general transmitter measurements spectrum frequency domain waveform time domain It includes cdma2000 Guide which contains measurement and programming information Option B7C Baseband IQ Measurement Personality Provides the following baseband IQ measurement capability for W CDMA and IS2000 channel power occupied BW code domain analysis modulation accuracy composite rho QPSK EVM power statistics CCDF And general transmitter measurements spectrum frequency domain waveform time domain Differential inputs are included with this option The input range is DC to 5 v A 2 5v variable DC offset function is available for both I and Q signals Option 202 EDGE with GSM Measurement Personality Provides EDGE 8PSK modulation transmitter measurements EVM power vs time output RF spectrum transmit band spurs Provides GSM GMSK modulation transmitter measurements power vs time phase and frequency error output RF spectrum transmit band spurs And general transmitter measurements transmit power spectrum frequency domain waveform time domain It includes the EDGE w GSM Guide which contains measurement and programming information 188 Chapter 6 Options and Accessories Options and Measurement Personalities Option 300 321 4 MHz IF Output Adds 321 4 MHz IF Output to the rear panel Option 252 Retrofit EDGE to Existing GSM Measurement Personality This option is onl
6. CUE s lt lt 3 3 3 3 4 4 4 4 6 6 6 6 s gt lt se 8 8 8 8 Y 9 9 9 DB9 DB9 DB9 DB9 DB9 DB9 Male Female Female Male Male Female ca818a 46 Chapter 1 WARNING WARNING CAUTION CAUTION Getting Started Safety Considerations Safety Considerations This section covers safety considerations relating to the installation and use of the instrument Instrument Installation Install the instrument so that the detachable power cord is readily identifiable and is easily reached by the operator The detachable power cord is used to completely disconnect the instrument The front panel switch is only a standby switch which maintains standby power to some parts of the instrument It does not disconnect the instrument from the power source Alternatively an externally installed switch or circuit breaker which is readily identifiable and is easily reached by the operator may be used as a disconnecting device The input power ranges for the power supply are 90 to 132 V or 195 to 250 Vrms The power supply automatically senses the input power and switches between these two ranges There is no customer replaceable power fuse The power cord is connected to internal capacitors that may remain live for 5 seconds after the plug is disconnected from its power supply If this product is to be energized via an external autotransformer for voltage reduction make sure that its common terminal is
7. Results The next figure shows an example of a Signal Envelope result for the waveform time domain measurements in the graph window The measured values for the mean power and peak to mean power are shown in the text window Waveform Measurement Signal Envelope View Agilent 08 20 01 10 24 29 Basic SP View Trace O O Ch Freq 1 00000 GHz Signal Envelope Waveform Time Domain Saas Et Signal Envelope 1 0 vtr 1 0 Polar Mean Pwr Entire Trace 30 43 dBm Pk to Mean 9 27 dB Meas Setup View Trace Signal Envelope Others Factory default settings Input signal cdma2000 Rev 8 SR1 9 Channel Chapter 4 111 Making Measurements Making the Waveform Time Domain Measurement Waveform Measurement I Q Waveform View Agilent 68 20 01 11 04 12 Viem Trace Signal Figure 4 6 Ch Freq 1 00000 GHz Haveform Time Domain O ee delia X Scale Div 20 Bus o Y 1 Q Waveform Re 1 0 Waveform 1 Q Polar kHz Gaussian Sample 112 Chapter 4 Table 4 2 Waveform Time Domain Measurement Defaults Measurement Parameter Factory Default Condition View Trace RF Envelope Sweep Time 2 000 ms Res BW 100 000 kHz Averaging Avg Number 10 Off Avg Mode Exp Avg Type Pwr Avg RMS Trig Source Free Run Immediate Signal Envelope View SPAN X Scale Scale Div 200 0 us AMPLITUDE Y Scale Scale Div 10 00 dB 1 Q Waveform View SPAN X Scale Scale Div 200 0 us AMPLITU
8. 118 log envelope graph view 116 magnitude amp phase graph view 117 Visible Align key 79 Ww waveform advanced menu 114 changing displays 118 changing views 116 view trace selection 116 1 Q waveform view 119 log envelope 111 making the measurement 110 method 110 next window selection 116 resolution bandwidth 114 results 111 span X scale 118 sweep time 114 118 using markers 120 zoom a window 116 Waveform Time Domain key 110 waveform time domain measurement 177 waveform measurement display 120 1 4 Polar view 120 website firmware updates 18 transmitter tester updates 18 window Index Index 1 Q waveform 93 Z RF envelope 93 zero span measurement 177 spectrum 93 Zoom 28 Window Length key 101 Index 197
9. 2 Save Print Navigation Window Tab net a S S Ez 20 Chapter 1 Getting Started Front Panel Keys Context Dependency Figure 1 2 These Features are Dependent on the Selected Mode and the Mode Setup Service cdmaOne A Mode t Radio Setup P Standard TIA 95B PCS Device MS BS Input Trigger Demod Averaging View i Trigger Source RF Chan Trace Advanced Spectrum Freq Domain Spurious Close Frame Limits Statistics View pectrum View 1 Q View SPAN X Scale F Meas Display Control AMPLITUDE FREQUENCY Y Scale Channel a Chapter 1 21 Getting Started Front Panel Keys Context Dependency Figure 1 3 These Features are Dependent on the Selected Measurement and the Measurement Setup Averaging Trigger Source Advanced Limits SPAN X Scale AMPLITUDE Y Scale Displ Meas Marker pe a Some Measureand Meas Setupparameters are context dependent upon the Radio variant and Device selected in the Mode Setup 22 Chapter 1 Getting Started Front Panel Keys Context Dependency Front Panel Keys Context Dependent Relationships 1 4 Figure
10. 250 00 to 250 00 dBm with 0 01 dB resolution The default setting is 10 00 dBm However since the Scale Coupling is defaulted to On this value is automatically determined by the measurement result e Ref Position Allows you to set the display reference position to either Top Ctr center or Bot bottom The default setting is Top e Scale Coupling Allows you to toggle the scale coupling function between On and Off The default setting is On Upon pressing the Restart front panel key or Restart softkey under the Meas Control menu this function automatically determines the scale per division and reference values based on the measurement results Using the Marker The Marker key is not available for this measurement function Troubleshooting Hints If an external attenuator is used be sure to use the Ext RF Atten key to include the attenuation value in the displayed measurement result The channel power measurement along with the adjacent channel power ratio measurement and spectrum measurements can reveal the effects of degraded or defective parts in the transmitter section of the UUT The following are areas of concern which can contribute to performance degradation e DC power supply control of the transmitter power amplifier RF power control of the pre power amplifier stage and or I Q control of the baseband stage e Gain and output power levels of the power amplifier caused by degraded gain control and or increased d
11. Advanced Allows you to access the menu to change the following parameters Changes from the default values may result in invalid data Pre ADC BPF Allows you to toggle the pre ADC bandpass filter function between On or Off The default setting is Off The pre ADC bandpass filter is useful for rejecting nearby signals so that sensitivity within the span range can be improved by increasing the ADC range gain RBW Filter Allows you toggle the resolution bandwidth filter selection between Flat and Gaussian If set to Gaussian the filter provides more even time domain response particularly for bursts If set to Flat the filter provides a flatter bandwidth but is less accurate for pulse responses A flat top filter also requires less memory and allows longer data acquisition times For most waveform applications the Gaussian filter is recommended ADC Range Allows you to access the menu to select one of the ADC ranging functions 1 Auto Select this to cause the instrument to automatically adjust the signal range for optimal measurement results 1 AutoPeak Select this to cause the instrument to continuously seek the highest peak signal 1 AutoPeakLock Select this to cause the instrument to adjust the range for the highest peak signal it identifies and retains the range settings determined by that peak signal even when the peak signal is no longer present 1 Manual Allows you to access the se
12. Chapter 4 141 NOTE NOTE Making Measurements Timebase Frequency Timebase Frequency Purpose In the absence of a frequency counter the measurement quickly determines the frequency difference between the instrument s 10 MHz reference oscillator signal and an accurate external 10 MHz frequency standard The timebase frequency check is not as accurate as a measurement of the 10 MHz Out signal rear panel using a frequency counter referenced to a frequency standard Measurement Method The internal 10 MHz reference signal is compared with a reliable external 10 MHz signal which the user inputs into the front panel RF connector The transmitter tester subtracts its 10 MHz reference from the input signal and displays the frequency difference Test Setup An accurate external 10 MHz frequency signal such as a house standard is connected to an attenuator which attenuates the signal to 0 dB The attenuated 10 MHz signal is connected to the RF input of the transmitter tester Pressing Mode Service Measure Timebase Frequency will result in the display of data described below When setting up this test ensure that the reference is set to internal To check this press System Reference The Freq Ref softkey allows you to toggle between nt internal and Ext external Make sure Intis underlined 142 Chapter4 Making Measurements Timebase Frequency Results Window One Time Record Shows an I Q display of
13. Next Window Zoom Marker Search Using Measure Keys The MEASURE front panel key allows you to activate one measurement from those available in the current mode The measurements that are available will vary depending on which mode you have selected It may be a measurement personality mode the basic mode or the service mode Chapter 4 89 Making Measurements Preparing for Measurements Measurement Control Following your selection of the instrument mode and mode setup you will use keys in the Meas Control keys to control processes that affect the running of the current measurement e Measure Toggles between Single and Cont for continuous measurement states When set to Single the measurement will continue until it has reached the specified number of averages set by the average counter When set to Cont the measurement will run continuously and perform averaging according to the current average type repeat or exponential The default is continuous See page 90 for an explanation of averaging e Pause Pauses the current measurement Once toggled the label of the Pause key changes to read Resume Measurement settings can be change while it is paused The Resume key continues the active measurement from the point at which it was paused e Restart re initiates the current measurement from the beginning including averaging without changing the current measurement settings Ifthe measurement is paused then re
14. Note that the internal 50 MHz reference signal and the IF align signal are used as internal inputs that do not require external connections See page 73 for more detail 4 View keys View keys modify the format of the trace and numeric data on the display See page 93 for more detail View Trace accesses softkeys that control the way results are viewed Display accesses softkeys that change the display Functions such as limit mask on off and dots on off are available for some measurements 5 Measure keys are used to select and set up a specific measurement within the selected application See page 89 for more detail Chapter 1 MEASURE accesses softkeys that select and initiate the various measurements that are specific to the current mode Meas Setup accesses the setup parameters that are specific to the current measurement Restart causes the measurement that is currently in process to stop then start again at the beginning according to the current measurement setup parameters Meas Control accesses softkeys that affect the measurement after it has been setup for example selecting a single or continuous measurement 25 Getting Started Front Panel Description 6 Mode keys select the measurement mode and mode parameters See page 83 for more detail e MODE accesses softkeys to select the instrument mode Each mode is independent of all other modes e Mode Setup accesses softkeys that affect parameters that
15. PARALLEL The PARALLEL connection supports remote printing 12 MONITOR The MONITOR allows connection of an external VGA monitor using a 15 pin mini D SUB connector 13 RS 232 The serial port RS 232is not implemented This feature will be implemented with a future firmware update 32 Chapter 1 Getting Started Display Annotation Display Annotation R i 00 15 24 48 Agilent 07 12 Basic I Measure Spectrum Freg Domain Spectrum Center Freg 50 0000000 MHz Waveform En Spectrum Time Domain R 170 Haveform PreFFT BH 1 55000 MHz Flat Capture Time pa83a The annotation features explained below refers to the display that is visible when your transmitter tester is in basic measurement mode this is the default state of the transmitter tester when it is turned on For explanations relating to unique measurement options such as GSM or cdmaOne see the documentation that accompanies each mode 1 Center Frequency annotation 2 Trigger Source Indicator 3 Vertical Scale dB Division Indicator 4 Reference Level Indicator in dBm 5 Active Function Area The active function area displays numeric entries If you press a measurement key that activates a function its value will appear in the active function area Chapter 1 33 NOTE Getting Started Display Annotation 6 34 Chapter 1 Measurement Bar Displays information about measurements including some mode setup parameters Cur
16. You must load the desired option into your instrument memory This usually requires updating the instrument firmware so that it is compatible with the new option Loading can be done from a CD ROM or a www location You cannot fit all of the available measurement personalities in the instrument memory at the same time The approximate memory requirements for the options are listed below These numbers are worst case examples Many options share share components The total memory usage of multiple options may not be exactly equal to the combined total Available Personality Options File Size VSA A 05 20 GSM measurement personality 2 3 MB EDGE with GSM measurement personality 3 2 MB cdmaOne measurement personality 1 9 MB NADC measurement personalities 1 2 MB PDC measurement personalities 1 3 MB iDEN measurement personality 1 7 MB W CDMA measurement personality 4 1 MB cdma2000 measurement personality 3 7 MB Shared measurement library 1 5 MB a This application uses the shared library so you have to add its memory requirements to this value Chapter 1 37 Getting Started Installing Optional Measurement Personalities The Exit Main Firmware key is used during the firmware installation process This key is only for use when you want to update firmware using a LAN connection The Exit Main Firmware key halts the operation of the instrument firmware so you can install an updated ve
17. subnet mask and host name will have been reset to factory defaults The IP address is changed to 10 10 10 10 the subnet mask is changed to 255 255 0 0 and the host name is set to VSA Instrument Keyboard is Locked Symptom The keyboard is locked and does not respond to attempts to activate features Solution A programmer can lock the keyboard remotely using the SCPI KLOCk command You can confirm if this is the reason the keyboard is locked by examining the annunciator bar a message saying Klock will appear if this command has been executed 182 Chapter5 Our Promise Your Advantage If You Have a Problem Agilent Technologies Test and Measurement Support Services and Assistance 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 measurement 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 successfully Every instrument and system we sell has a global warranty Support is available for at least five years beyond the production life of the product Two concepts underlie Agilent s overall support policy Our Promise and Your Advantage Our Promise means your Agilent test and measurement equipment will mee
18. 136 correlation between symbols on different codes 136 digital signal processing 136 display Gaussian line 139 set trace line 139 trace line 139 Gaussian distribution curve 136 band limited gaussian noise CCDF reference line 136 instantaneous envelope power 136 marker 140 delta 140 marker all off 140 normal 140 off 140 select 140 shape 140 trace 140 measurement bandwidth 138 measurement interval 138 modulation filtering 136 modulation format 136 number of active codes 136 number of sampling points 138 power complementary cumulative distribution function curves 136 probability for that particular power level 136 Pre ADC BPF key spectrum measurement 100 preamplifiers 191 Pre FFT BW key 100 Pre FFT Fltr key 100 preset factory default 82 Preset key 89 Print Location key 63 Print Setup key 63 Print Type key 63 printer 191 custom 64 Printer key 63 printers 191 RS 232 cables 41 printing 63 probe power 27 probes AC and DC 191 problems error messages 180 feature cannot be accessed 180 LAN connection 180 power on 180 Q Q origin 1 4 Polar window 120 1 4 polar window 120 Q Origin key 107 Q waveform window amplitude Y scale 119 reference position 119 reference value 119 scale coupling 119 scale per division 119 R rear panel connection keys 69 rear panel connections 30 Ref Position key 93 Ref Value key 93 Reference key 71 reference selecting interna
19. AA RRR A AA 24 Rear Panel Destripador 30 Display Annotation dcir ARANA AER 33 Installing Optional Measurement Personalities 0 cece eee eens 36 Available Personality Options 0642 en ede peeeke ye iceewiaswicaddeea pene deans 36 Loading the Optional Personality ccccaccc c0cend deka ed ened dunedentaduneew ena 37 viewing a License A O tienes ede a 38 Hastalling a License Key occ c bda waa chad ened eeciene chem hedna ceed eadweed ewe 39 Deion the Uninstall Ket vcsvccs teres ghicaee AAA 39 Cables for Connecting to the Serial Port A eset eeaeae ede tage 41 Safety Considerations caras AAA CARA eas 47 Instrument Mstallatien crac users eedaweeaagesiavs 47 Instrument Operation and Maintenance nasua ccc eee eens 48 2 Using System Features Wamp meyetent Revs eocrobns ceed bode Feed Re OSE RAO AAA RO EES EES 52 Install and asta ig peeked AAA LOLA ORES SOM DAS be ERS 52 Key LOCAS oss secs wees bn ae ed PUREE ERE LH ae RS EOE MER EES BOE AAA 53 Using Print and Print Setup Functions ein A A E 63 Ponting a Displayed Dereon isos ned ier inca ERI AAA 63 Printing a Screen Image to a File on A or C Drives 000 cece eee 65 Usme Wile and Save Keys lt iya csc ace ad aeks ies eee Sed FORALL Bees sites 67 EDADES ic neice ew eer e eS E AA AR 67 Sa EE 240 cb E e Ghee can hoe deed Fee Ca Ree Ree Se eed 67 Lame the Alpha Editor eye oi pecan e ceed bdo ees bo Peek od See we eR ee wd 68 Using Input Output Configurati
20. Advanced ADC Range Note This feature is used when measurement is set to either spectrum or waveform Auto Align System Alignments AutoPeak Meas Setup More 1 of 2 Advanced ADC Range Note This feature is used when measurement is set to either spectrum or waveform AutoPeakLock Meas Setup More 1 of 2 Advanced ADC Range Note This feature is used when measurement is set to either spectrum or waveform Auto Trig Mode Setup Trigger Note This feature is used when measurement is set to either spectrum or waveform Average View Traces Display Traces Average Meas Setup Note This feature is used when measurement is set to either spectrum or waveform Avg Mode Meas Setup Average Note This feature is used when measurement is set to either spectrum or waveform Avg Number Meas Setup Average Note This feature is used when measurement is set to either spectrum or waveform Avg Trace Marker More 1 of 2 Marker Trace Avg Type Meas Setup Average Note This feature is used when measurement is set to either spectrum or waveform Band Power Marker Function Basic MODE Blackman Meas Setup More 1 of 2 Advanced FFT Window Blackman Harris Meas Setup More 1 of 2 Advanced FFT Window More 1 of 2 BMP Print Setup Print To File File Type cdmaOne MODE Center Freq FREQUENCY Channel Choose Option System More 1 of 3 More 2 of 3 Install Choose Option System More 1 of 3 More 2 of 3 Uninstall 5
21. Amplifiers Preamplifiers and power amplifiers can be used with your instrument to enhance measurements of very low level signals e The HP Agilent 10855A preamplifier provides a minimum of 22 dB gain from 2 MHz to 1300 MHz Power is supplied by the transmitter tester s probe power output e The HP Agilent 8447D preamplifier provides a minimum of 25 dB gain from 100 kHz to 1 3 GHz e The HP Agilent 87405A preamplifier provides a minimum of 22 dB gain from 10 MHz to 3 GHz Power is supplied by the instrument probe power output GPIB Cable The HP Agilent 10833 GPIB cables interconnect GPIB devices and are available in four different lengths GPIB cables are used to connect printers and controllers to an instrument Parallel Interface Cable The HP 92284A parallel interface cable is a 36 pin to 25 pin male to male 2 meter cable used to connect supported printers to an instrument Printer The DeskJet personal printers provide black and white or color printing for another form of permanent records of your test results The HP LaserJet series printers are also compatible Chapter 6 191 Options and Accessories Accessories RS 232 Cables Model Number Description HP 24542G 3 meter 9 pin f to 25 pin m RS 232 cable Can be used with HP DeskJet printers HP LaserJet Series printers and PCs with 25 pin f RS 232 connectors HP 24542U 3 meter 9 pin f to 9 pin f RS 232 cable for serial 9 pin PC conn
22. Chapter 1 Getting Started What Documentation Comes with the E4406A VSA Series Transmitter Tester URL for the Latest VSA Transmitter Tester Update For the latest information about this instrument including firmware upgrades application information and product information please visit the following URL www agilent com find vsa Understanding Digital Communications Measurements Additional measurement application information is available through your local Agilent Technologies sales and service office See the If You Have a Problem chapter for office location information Some available application notes are listed below Measurements for Base Transceiver Stations and Mobile Stations Application Note 1324 eons Agilent Part Description Number Digital Modulation in Communications Systems 5965 7160E An Introduction Application Note 1298 Understanding CDMA Measurements for Base 5968 0953E Stations and Their Components Application Note 1311 Understanding GSM Transmitter Measurements 5968 2320E Application Note 1312 HPSK Spreading for 3G 5968 8438E Agilent E4406A VSA Series Transmitter Tester 5968 7617E Self Guided Tour Designing and Testing 3GPP W CDMA Base Stations 5980 1239E Application Note 1355 Designing and Testing 3GPP W CDMA User Equip 5980 1238E ment Application Note 1356 Designing and Testing IS 2000 Base Stations 5980 1303E Application Note 1357 Designing
23. Cry ere U ie Omer aren ENO ERE Tey OT tere 63 A aes 85 Por ME rene REE RPS OR TSE ra re RE Ty oer POPE ERT re TI ae DUET TT CERRO ev REET Cre Pe Leer er ere 86 A ibn 63 Ln A ode tna end E dele E E E N E O E E E teas I E E E E E 85 Pr a A E E E E N S AE E A 65 Pe E a a See een oe emer as eer er te meen RRR RaeT ey Cone tree etree 91 rr ane ats en eta 162 A celia musta sacte el amie mnie amacrine 159 A a eae Ma eee 94 Pery ora ios oases aac indians ds 93 10 List of Keys O E 71 A e nieces 63 A A nda ere areca ecg teenie ee ee 90 Reset riser Wis lye A eee 86 Restore A eens ciel wep 79 Restore Meas Dieta iaa a Hei ii indi 90 O arate N E 90 BP EGS Wy TCAD AA Aaa 85 free NEE ee re I Te ree E A A E E E E E E E nnn unre Cre E T Enea ee renee ert 83 EE O EAN E T A E OE EI E EA er els A A E N 67 pelts fed D A a E eeeer rer ererr 94 A asics vs ria E saad anaes Rees 93 rs lol UBL sree etter O aa 70 O EAE O A E NE A ES aed en enc en edn hae 96 o oes isa cides us E T necator E E E A E E S T E E ere lame tens 146 OEE T N 70 PG L sh ct EE E A ses 82 PUBL ERNE situs while ENA E PA AAE SAA OOTAN E EEA IEN NE E A da ine AE A NAT 96 O E E E T A E A T 73 A TE TN N 70 a AA E E A A A AA E RS 84 A pes caine lnm paca dees ies denied ce ee eee eee 84 L E E E E O E tasers da eras Sd cats ee dass alice vis wae ta thera ieee alee laces 85 Decker PU a 70 PI A A A A AA A A 93 POPE Mi ai via dies 93 o EE E sad ciate E T O E asa anaes uae E E
24. DAC value increases the amplitude of the signal in a linear fashion and will be visible on screen The default DAC value is 500 e Signal Type key This menu allows you to select a CW a tone that appears in the center of the IF comb or pulse type signal as the IF align signal 84 Chapter 3 Setting the Mode Mode Setup Trigger Keys The Trigger key accesses the mode setup menu for the following trigger sources See See Trigger Source on page 92 for a description of trigger sources including RF Burst Wideband Video IF Envlp Ext Front Ext Rear Pressing one of the trigger source keys will access the mode setup menu This menu is used to set the Delay Level and Slope for each trigger source Note that the actual trigger source is selected separately for each measurement under the Meas Setup key Delay key This key is used to set the delay time for trigger sources For trigger delay use positive values For pre trigger delay use negative values The range of the trigger delay is 500 ms to 500 ms Level key For the RF Burst Wideband selection the level is relative to the peak level of the RF signal for the AF Burst trigger you will enter a peak level value with a key labelled Peak Level rather than Level For the Video selection the level is the value in dBm at the RF input that will cause the trigger For the Ext Front and Ext Rear selections the level range is 5 to 5 volts Slope key This ke
25. E 0 0 1000000 an GOO gt C3 SA gt OO C e p2 OOOO e O EN a CCOO A O om Cc o 5 lt OO S om 2 o 2 Oo O O oe OA Oc gt 00 c on Le o ELSE e OOO LO oS fF o d gt C 7 pa82a 1 TRIGGER 2 OUT provides a transmitter tester trigger output This is used to synchronize other test equipment with the transmitter tester 2 TRIGGER 1 OUT provides a transmitter tester trigger output This is 3 EXT REF IN 4 10 MHz OUT 30 used to synchronize other test equipment with the transmitter tester allows the input of a 1 to 30 MHz external frequency reference signal The external reference frequency must be entered by the user provides an output of the transmitter tester s internal 10 MHz frequency reference signal This is used to lock the frequency reference of other test equipment with the transmitter tester This is a switched output Chapter 1 Getting Started Rear Panel Description 5 TRIGGER IN The external trigger allows external triggering of measurements The external trigger accepts an external trigger signal between 5 and 5 V and has a nominal impedance of 10k Q For more information on triggering see page 85 6 SCSI Currently the SCS connection can only be used to connect an external SCSI drive for firmware upgrades SCSI functionality will be fully implemented with a future firmware update 7 Line Power Input AC power line connection The line voltage operates at nomin
26. E 86 T net PR A A NAA 70 Tee SAT AAA 79 Time base Pre qUe td iia da 142 A cea eee me eee 95 TAS ICAA AAA ttre reer tn is ia 85 A EEE A PRR oS Corer ere AE A rn nT Per Ue een ieee eee eee ere 85 a OE EIES OEE AS AII A EE 74 video UUT DEE hcg 85 VI e E a TTE a retro ter 79 VILO A T A 91 11 List of Keys 12 Getting Started This chapter introduces you to basic features of the instrument including front panel keys rear panel connections and display annotation You will also find out how to make a basic measurement and install applications 13 Getting Started Topics include What Documentation Comes with the E4406A VSA Series Transmitter Tester on page 15 Making a Measurement on page 19 Front Panel Keys Context Dependency on page 20 Front Panel Description on page 24 Rear Panel Description on page 30 Display Annotation on page 33 Installing Optional Measurement Personalities on page 36 Safety Considerations on page 47 Cables for Connecting to the Serial Port RS 232 on page 41 14 Chapter 1 Getting Started What Documentation Comes with the E4406A VSA Series Transmitter Tester What Documentation Comes with the E4406A VSA Series Transmitter Tester With your purchase of the instrument you receive the following materials Table 1 1 Standard Documentation Part Description Notes User s Guide Does not include operational informat
27. EA TE T ENT 145 OE A NERE EN PEN de e E A E 146 aa A O NO 146 Measurement Method sion RA ARA 146 e A ESIE SAT ETT EION O TE OTT 146 o E E AE E A A RMR E E RR A 146 Pront Panel Tesi ussorio wee nsec chwed chek chown us sacra ees ede EEE Set Rabwed E 148 PUPS AA PAPA ASA 148 EAL POLO A AATTEENA TEETAN ES ALTAS TSTS TTET 148 A IN 149 Troubleshooting Hints occ ekacen gen ra EA AAA A a a cs 149 Service Power vs Time Measurement 46 00640660560 060 6 ees seen a 150 o O te sean kwie 150 Using Baseband I Q Inputs Option B7C 00 ccc cen eens 151 What are Baseband I Q Inputs 00 ee een eee e eens 152 What are Baseband EQ Signals conrcolosions raro re ROWER tostada 153 Why Make Measurements at Baseband 1 0 0 0 cece eee ence eens 153 Making Measurements with Baseband I Q Inputs 0 e eee ee 154 Baseband I Q Measurement Overview 0 0 cee eet eee nee 155 Selecting Input Probes for Baseband Measurements 0 0 cece cence 156 Selecting Baseband I Q Inputs 1 0 0 0 0 eee e enn e eens 159 Selecting Baseband I Q Input Connectors 0 0 0 ccc aerae 159 Setting Up Baseband VQ Inputs 2 40206 cc ena e ced bend deena en en de eadaenn aan 161 Baseband I Q Measurement Views 00 00 ccc cee eee eee een oos 165 Baseband I Q Measurement Result Examples 0 000s cee eee eens 168 Contents Baseband I Q Key Access Locations o oooooocooorocnoo e een nas 172 BbIQ Pro
28. Flat Top High AmptdAcc Auto 3 100000 706 1024 Auto Peak Auto Auto Chapter 4 99 Table 4 1 NOTE Making Measurements Making the Spectrum Frequency Domain Measurement Spectrum Frequency Domain Measurement Defaults Measurement Parameter Factory Default Condition Decimation 0 Auto IF Flatness On Parameters under the Advanced key seldom need to be changed Any changes from the default advanced values may result in invalid measurement data Make sure the Spectrum Freq Domain measurement is selected under the Measure menu Press the Meas Setup key to access a menu which allows you to modify the averaging and trigger source for this measurement as described in the Measurement Setup section In addition the following parameters can be modified 1 Span Allows you to modify the frequency span The range is 10 000 Hz to 10 000 MHz with 1 Hz resolution depending on the Res BW setting Changing the span causes the resolution bandwidth to change automatically and will affect data acquisition time Res BW Allows you to set the resolution bandwidth for the FFT and to toggle its mode between Auto and Man manual If set to Auto the resolution bandwidth is set to Span 50 2 of the span If set to Man you can enter a value ranging from 100 0 mHz to 3 00000 MHz A narrower bandwidth will result in a longer data acquisition time Advanced Allows you to access the menu to
29. INPut IMPedance REFerence Sets the value of the input impedance reference when input port is set to Ior Q Baseband I Q Activate IQ Alignment INPut I1Q ALIGn OFF ON 0 1 INPut 1Q ALIGn Activates or deactivates IQ alignment Baseband I Q I Input DC Offset INPut OFFSet I lt level gt INPut OFFSet 1 Sets adjustment to compensate for I voltage bias on signals when the I input port is selected Baseband 1 0 Q Input DC Offset INPut OFFSet 0 lt level gt INPut OFF Set Q Sets adjustment to compensate Q voltage bias on signals when the Q input port is selected 176 Chapter4 Making Measurements Using Baseband I Q Inputs Option B7C MEASure Subsystem Spectrum Frequency Domain Measurement This measures the amplitude of your input signal with respect to the frequency It provides spectrum analysis capability using FFT fast Fourier transform measurement techniques You must select the appropriate mode using INSTrument SELect to use these commands CONFigure SPECtrum FETCh SPECtrum n READ SPECtrum n MEASure SPECtrum n Waveform Time Domain Measurement This measures the power in your input signal with respect to time and is equivalent to zero span operation in a traditional spectrum analyzer You must select the appropriate mode using INSTrument SELect to use these commands CONFigure WAVeform FETCh WAVeform n READ WAVeform n MEASure WAVeform
30. RF System Alignments Align Subsystem RF Burst Mode Setup Trigger RF Envelope View Trace Note This feature is used when measurement is set to waveform RF Envelope Marker Trace Note This feature is used when measurement is set to waveform RF Inp Level System Alignments Align Subsystem Align 50 MHz Reference Save Front Panel Save State File or Save Scale Coupling AMPLITUDEYY Scale for spectrum or waveform or SPAN XScale for waveform Scale Div AMPLITUDE Y Scale for spectrum or waveform or SPAN XScale for waveform SCPI LAN System Config I O Search Front Panel Select Marker Sensors MODE SService Server System Config I O SICL Server Service MODE Service Password System More 1 of 3 Show System Shape Marker More 1 of 2 Short Meas Setup More 1 of 2 Advanced More 1 of 2 Data Packing Show Errors System Show System System More 1 of 3 SICL Server System Config I O Signal Amptd Input IF Align Signal Signal Rate Input IF Align Signal Signal Type Input IF Align Signal 60 Chapter2 Using System Features Key Locations Table 2 1 Key Access Locations Key Key Access Path Slope Mode Setup Trigger Ext Front Slope Mode Setup Trigger Ext Rear Slope Mode Setup Trigger RF Burst Slope Mode Setup Trigger Video Socket Port System Config I O SCPI Lan Span Meas
31. Rel Lim Car Allows you to enter a relative limit value of the carrier level ranging from 150 00 to 50 00 dBc with 0 01 dB resolution The default is 45 00 dBc for Offset A and 60 00 dBc for offset B Rel Lim PSD Allows you to enter a relative limit value of the power spectral density level ranging from 150 00 to 50 00 dB with 0 01 dB resolution The default is 28 87 dB for Offset A and 43 87 dB for offset B Offset Adv Allows you to access the menu to change the following advanced offset parameters Sweep Time Allows you to select the sweep time manually Auto is the default Data Points Allows you to select the number of data points The automatic mode chooses the optimum number of points for the fastest measurement time with acceptable repeatability The minimum number of points that could be used is determined by the sweep time and the sampling rate You can increase the length of the measured time record capture more of the burst by increasing the number of points but the measurement will take longer 2048 is the default in Auto Chapter 4 127 Making Measurements Making the Adjacent Channel Power ACP Measurement Res BW This key is always grayed out However it allows you to see the resolution bandwidth that is derived from the combination of sweep time data points and FFT segments Num FFT Seg The automatic mode selects the optimum number of FFT segments to measure the offset while making th
32. Scale key or the AMPLITUDE Y Scale key access a menu to modify the following parameters e Q Scale Div Allows you to set the vertical and horizontal scales by changing the value per division The range is 1 00 nV to 20 00 V per division The default setting is 100 0 mV e Origin or Q Origin Allows you to set the reference value ranging from 250 00 to 250 00 V The default setting is 0 00 V Selecting Displayed Traces Within Windows The View Trace key allows you to access the Trace Display key to reveal the trace selection menu The currently selected trace type is shown on the Trace Display key e All Allows you to view both the current trace and the average trace e Average Allows you to view only the average trace in blue color e Current Allows you to view only the trace in yellow color for the latest data acquisition Chapter 4 107 Making Measurements Making the Spectrum Frequency Domain Measurement Using the Markers The Markerfront panel key accesses the menu to configure the markers If you want to use the marker function in the I waveform window press View Trace and Q Waveform Marker Trace Waveform e Select 123 4 Allows you to activate up to four markers with the corresponding numbers respectively The selected number is underlined and its function is defined by pressing the Function key The default is 1 e Normal Allows you to activate the selected marker to read the frequency and am
33. Setup SPAN Front Panel X Scale Spectrum View Trace Note This feature is used when measurement is set to spectrum Spectrum Marker Trace Note This feature is used when measurement is set to spectrum Spectrum Avg Marker Trace Note This feature is used when measurement is set to spectrum Spectrum MODE Service Freq Domain Spectrum MODE Basic Freq Domain Store Abs Ampl to System Alignments Align Subsystem Align 50 MHz Reference EEROM Subnet Mask System Config I O Sweep Time Meas Setup Can be accessed when measure is set to waveform System Front Panel Telnet Port System Config I O SCPI Lan Timebase Freq MODE Service Trace Marker Trace Display View Trace Trigger Mode Setup Note This feature is used when measurement is set to either spectrum or waveform Trig Holdoff Mode Setup Trigger Note This feature is used when measurement is set to either spectrum or waveform Chapter 2 61 Using System Features Key Locations Table 2 1 Key Access Locations Key Key Access Path Trig Source Meas Setup Note This feature is used when measurement is set to either spectrum or waveform Uniform Meas Setup More 1 of 2 Advanced FFT Window Uninstall System More 1 of 3 More 2 of 3 Uninstall Now System More 1 of 3 More 2 of 3 Uninstall Verbose System Show Errors Video Mode Setup Trigger View Trace Front Panel Visible Align System Ali
34. This is a Safety Class 1 Product provided with a protective earth ground incorporated in the power cord The mains plug shall be inserted only in a socket outlet provided with a protected earth contact Any interruption of the protective conductor inside or outside of the product is likely to make the product dangerous Intentional interruption is prohibited No operator serviceable parts inside Refer servicing to qualified personnel To prevent electrical shock do not remove covers Always use the three prong AC power cord supplied with this product Failure to ensure adequate grounding may cause product damage Warranty This Agilent Technologies instrument product is warranted against defects in material and workmanship for a period of three years from date of shipment During the warranty period Agilent Technologies Company will at its option either repair or replace products that prove to be defective For warranty service or repair this product must be returned to a service facility designated by Agilent Technologies Buyer shall prepay shipping charges to Agilent Technologies and Agilent Technologies shall pay shipping charges to return the product to Buyer However Buyer shall pay all shipping charges duties and taxes for products returned to Agilent Technologies from another country Agilent Technologies warrants that its software and firmware designated by Agilent Technologies for use with an instrument will execute
35. a trigger signal The clock parameters are controlled under the Mode Setup key or the measurement firmware not both See the specific measurement for details e Line Activates an internal line trigger Sweep triggers occur at intervals synchronized to the line frequency Rear panel TRIGGER 1 OUT and TRIGGER 2 OUT connectors are coupled to the selected trigger source These trigger outputs are always on the rising edge with a pulse width of at least 1 us 92 Chapter4 Making Measurements Preparing for Measurements Changing the View The following keys enable you to select the desired view of the measurement and to change scale parameters for the graphic window View Trace Selects a predefined view of the current measurement and highlights the selected window Once a window is selected the X and Y scale keys can be used to modify scale parameters The types of windows and X and Y scale parameters that are available will vary depending on the measurement you have activated e Typical Measurement Windows Spectrum window Select this window if you want to view a signal in parameters of frequency and power Changes to frequency span or power will sometimes affect data acquisition For more details see the section on spectrum measurements Signal Envelope window Select this window to view a signal in parameters of time and power For more detail see the section on waveform measurements Both RF and BbIQ signals can be viewed
36. and Testing IS 2000 Mobile Stations 5980 1237E Application Note 1358 Understanding PDC and NADC Transmitter 5968 5537E Chapter 1 17 Getting Started What Documentation Comes with the E4406A VSA Series Transmitter Tester Updating the Firmware Updated versions of the E4406A VSA Transmitter Tester firmware will be available from several sources Information on the latest firmware revision can be accessed through the following URL URL to Contact to Obtain Firmware Update Information www agilent com find vsa 18 Chapter 1 Getting Started Making a Measurement Making a Measurement This instrument enables you to make a wide variety of measurements on digital communications equipment using the Basic Mode measurement capabilities It also has optional measurement personalites that make measurements based on industry standards To set up the instrument to make measurements you need to 1 Select a mode or personality which corresponds to a digital communications format like cdma2000 W CDMA or EDGE Use the Basic mode to make measurements of signals with non standard formats After selection of the mode adjustments to the mode settings may be made as required 2 Select a specific measurement to be performed like ACP Channel Power or EVM etc After selection of a measurement adjustments to the measurement settings may be made as required Depending on Measurement Control settings the instrument
37. are specific to the current mode and affect all measurements within that mode 7 System keys access system features that are used with all instrument modes See page 52 for further explanation of system features e System accesses features that control instrument configuration at the system level like I O configuration and alignment which affect all instrument modes Pressing System also returns the instrument to local control if it has been in remote mode e Presetresets all parameters of the current mode back to the factory defaults e Printimmediately prints what is on the screen to the printer or saves a file to a floppy disc according to the parameters that are currently set in the Print Setup menu See page 63 for more detail e Print Setup configures the transmitter tester for printing to a printer or saving an image file to the floppy disc drive and also allows you to select the printer type e File accesses softkeys that control the file system of the transmitter tester for saving and loading instrument states See page 67 for more detail e Savesaves the current instrument state in the File menu See page 67 for more detail 8 Marker keys are used to obtain specific information about parts of the displayed measurement for example to identify the exact frequency of an offset See page 95 for more detail e Marker accesses softkeys that allow manual positioning of markers e Search automatically perform
38. change the following parameters The FFT advanced features should be used only if you are familiar with their operation Changes from the default values may result in invalid data Pre ADC BPF Allows you to toggle the pre ADC bandpass filter function between On and Off The pre ADC bandpass filter is useful for rejecting nearby signals so that sensitivity within the span range can be improved by increasing the ADC range gain Pre FFT Fltr Allows you to toggle the pre FFT filter between Flat flat top and Gaussian The pre FFT filter defaults to a flat top filter which has better amplitude accuracy The Gaussian filter has better pulse response Pre FFT BW Allows you to toggle the pre FFT bandwidth function between Auto and Man manual The pre FFT bandwidth filter can be set between 1 Hz and 10 MHz If set to Auto this pre FFT bandwidth is nominally 50 wider than the span This bandwidth determines the ADC sampling rate FFT Window Allows you to access the following selection menu Unless you are familiar with FFT windows use the flat top filter 00 Chapter4 a a Making Measurements Making the Spectrum Frequency Domain Measurement Flat Top Selects this filter for best amplitude accuracy by reducing scalloping error Uniform Select this filter to have no window active by using the uniform setting Hanning Press this key to activate the Hanning filter Hamming Press this key to activate t
39. currently selected application mode or the particular measurement being made They apply to all modes and measurements The System key also performs the LOCAL function If the instrument was previously being controlled remotely by a computer pressing the System key will reactivate the front panel keys Print feature keys are accessed through the front panel Print Setup and Print keys which are explained on page 63 File feature keys are accessed through the File and Save menu keys which are explained on page 67 Each description of a system feature begins with a table that shows the key path for all keys related to that feature Most of the system features are not affected by pressing the Preset key or by cycling the instrument power These features will retain the last value set by the user Press System More Restore Sys Defaults Yes to reset the System parameters back to the factory defaults Install and Uninstall The Install and Uninstall keys which enable you to install and remove measurement personalities are described separately on page 36 of the Getting Started chapter 52 Chapter2 Using System Features Key Locations Key Locations All system service and basic features can be located by using the key access table below The key access path describes the key sequence you enter to access the particular key Some features can only be used when specific measurements are active If a feature is not currently vali
40. for the peak of the display which is the result of n averages This will usually result in differing values for the maximum point Troubleshooting Hints Changes made to advanced waveform settings can inadvertently result in measurements that are invalid and cause error messages to appear Care needs to be taken when using advanced features as some settings may incorrectly appear to provide a valid result Press Meas Setup More Restore Meas Defaults to return measurement settings to a known state then vary settings only as necessary Chapter 4 121 Making Measurements Making the Adjacent Channel Power ACP Measurement Making the Adjacent Channel Power ACP Measurement Purpose Adjacent Channel Power ACP is the power contained in a specified frequency channel bandwidth relative to the total carrier power It may also be expressed as a ratio of power spectral densities between the carrier and the specified offset frequency band As a composite measurement of out of channel emissions ACP combines both in band and out of band specifications to provide useful figures of merit for spectral regrowth and emissions produced by components and circuit blocks without the rigor of performing a full spectrum emissions mask measurement To maintain a quality call by avoiding channel interference it is important to measure and reduce any adjacent channel leakage power transmitted from a mobile phone The characteristics of adjacent chan
41. graph in parameters of voltage versus time in the linear graticules Changes to sweep time or resolution bandwidth will sometimes affect data acquisition Figure 4 8 Waveform Measurement I Q Waveform View Agilent 08 20 01 11 04 12 Basic ___ View Trace Ch Freq 1 00000 GHz me Waveform Time Domain E X Scale Div 2 Qus Y 1 0 Waveform 1 0 Waveform Meas Setup View Trace I Q Waveform View Others Factory default settings Input signal in this example cdma2000 Rev 8 SR1 9 Channel NOTE For the widest spans the I Q Waveform window becomes just ADC time domain samples because the I Q down conversion is no longer in effect Chapter 4 117 Figure 4 9 Making Measurements Making the Waveform Time Domain Measurement e Q Polar Provides a view of the I Q signal polar vector graph Waveform Measurement 1 Q Polar View X Agilent 08 20 01 11 12 00 Basic _ _ Viem Trace AR AA A A a A _ _ Ch Freq 1 00000 GHz Signal Haveform Time Domain ne Envelope I Q Scale Div 5 00 mV 1 0 Polar 1 0 Waveform Q Origin y YN 1 0 Polar I Origin 0 00 Meas Setup View Trace I Q Polar View Others Factory default settings Input signal in this example cdma2000 Rev 8 SR1 9 Channel Changing the Display The Sweep Time key under the Meas Setup menu controls the horizontal time span for this measurement while the SPAN X Scale key allows you to access the menu to modify
42. n Chapter 4 177 Making Measurements Using Baseband I Q Inputs Option B7C SENSe Subsystem Select the Input Signal SENSe FEED RF 1IQ IONLy QONLy AREFerence IFALign SENSe FEED Selects the input signal The default input signal is taken from the front panel RF input port For calibration and testing purposes the input signal can be taken from an internal 321 4 MHz IF alignment signal or an internal 50 MHz amplitude reference source If the baseband IQ option Option B7C is installed I and Q input ports are added to the front panel The I and Q ports accept the in phase and quadrature components of the IQ signal respectively The input signal can be taken from either or both ports RF selects the signal from the front panel RF INPUT port IQ selects the combined signals from the front panel optional I and Q input ports Option B7C IONLy selects the signal from the front panel optional I input port Option B7C QONLy selects the signal from the front panel optional Q input port Option B7C AREFerence selects the internal 50 MHz amplitude reference signal IFALign selects the internal 321 4 MHz IF alignment signal Baseband I Q Select VQ Power Range SENSe POWer IQ RANGe UPPer lt power gt DBM DBMV W SENSe POWer 1Q RANGe UPPer Selects maximum total power expected from unit under test at test port when I or Q port is selected Baseband I Q Select 1 Q Voltage Range SE
43. of the internal 50 MHz reference signal for absolute amplitude accuracy The test equipment and the adjustment procedure required are described in the E4406A service guide NOTE The Align 50 MHz reference feature can only be activated if you have a service password The password is not available unless the user has purchased the service guide 78 Align Current IF Flatness Activates an immediate measurement of the current IF flatness for FFT spectral amplitude compensation Normally this alignment occurs in the background when the instrument bandwidth is changed Given the current BW and Gain DAC settings for a measurement alignment is done using the comb calibration signal The relative amplitude of combs within the BW are compared to expected amplitudes to generate the effective shape of the current IF path If Time Corrections are active this alignment generates complex IF responses magnitude and phase rather than just the original scalar magnitude response The complex alignment requires reasonable delay estimation and improved trigger compensation so the phase response of several averaged measurements can be unwrapped properly Align Current SysGain Activates a fine tuning adjustment of the system gain This is done by measuring the response of the current system state configuration to the 50 MHz amplitude reference signal All subsequent measurements are then compensated appropriately for absolute amplitude accuracy N
44. option e Basic This mode is useful for making measurements that are not preset to industry standards They can be used for troubleshooting your devices Press Mode Basic to switch to the basic mode and bring up the measurements menu For more information on these measurements go to Basic Measurements on page 88 e Service These features will help you check the functionality of your instrument Press Mode Service to switch to the service mode and bring up the service measurements menu Features accessed through this menu include tests which check the timebase frequency the sensors on the RF board and the functionality of the front panel keys For more information on these features go to Service Measurements on page 141 The basic waveform and spectrum measurements are available as well as a power vs time measurement which is used only for self diagnostic purposes The measurement setup parameters that you select while in Service mode are only used for service mode The Basic mode settings are independent Descriptions of the spectrum and waveform measurements begin on page 97 Note that spectrum and waveform measurements are available in each personality mode as well as in the basic and service modes Each with their own independent mode settings Press Presetto set the instrument to a known factory default state This sets all parameters to their factory default values for the selected mode Preset does not switch the
45. set to RF The Input Atten feature allows you to enter the attenuation value The input attenuation can be set at values from 0 to 40 dB in increments of 1 dB The input attenuation setting is coupled to the maximum total power setting The Max Total Pwr and Input Atten settings are coupled together When you switch to a different measurement the Max Total Pwris kept constant but the Input Atten may change if the two measurements have different mixer margins Thus you can directly set the transmitter tester input attenuation or you can set it indirectly by specifying the maximum expected power at the UUT Max Total Pwr setting Adjust the IF Align Signal The IF align signal adjustments are advanced features IF align rate amplitude and type should not be modified unless you are familiar with IF align functionality e Signal Rate The signal is modulated by a digital sequence that can be set to 1 of 13 positions rate 0 through 12 to cause the comb spacing or pulse timing of the alignment signal to widen or narrow At the position of 1 the signal rate is set at its maximum value of 234 375 kHz This frequency rate value will appear in the softkey label Each time the position integer is incremented the signal rate is halved For example at a position of 2 the signal rate is 117 188 kHz e Signal Amptd key To modify the signal amplitude you will enter a DAC value between 0 4095 The amplitude range is 0 to 50 dB Incrementing the
46. symbol when it is necessary for the user to refer to the instructions in the documentation This symbol is used to mark the ON position of the power line switch This symbol is used to mark the OFF position of the power line switch This symbol is used to mark the STANDBY position of the power line switch This symbol indicates that the input power required is AC This symbol is used to mark the STANDBY OFF position of the power line switch This symbol is used to mark the On position of the power line switch 48 Chapter 1 NOTE Getting Started Safety Considerations Safety Considerations for Service Personnel No one other than qualified service personnel are allowed to remove the cover of the instrument The following warnings apply to service personnel These warnings are found on the rear panel of the instrument To Remove Outer Cover Remove Strap Handle 4 Bottom Feet and 4 Rear Feet To Remove CPU Assembly Unplug All Boards Connected to CPU When Removing CPU Keep Perpendicular with Rear Panel Chapter 1 49 Getting Started Safety Considerations 50 Chapter 1 Using System Features System keys access features that are used with all modes including alignment configuring I O and file management 51 NOTE Using System Features Using System Keys Using System Keys System features are accessed through the System front panel key These are features that are not dependent on the
47. the frequency difference between the input signal and the internal 10 MHz signal Window Two Magnitude Shows a polar representation of window one This window shows how much the phase error changes during the sampling period Window Three Freq Error Shows a stripchart of the timebase error in MHz vs time Each dot on the horizontal axis is one sampling period Window Four numeric results Freq error The error difference between the 10 MHz input signal and the internal 10 MHz signal Magnitude The magnitude of the external 10 MHz signal While this is an uncalibrated value it gives the user an idea of the signal amplitude Adjusting A 0 will appear if the timebase adjustment is not being performed A 1 will appear if the adjustment is being performed 6 Agilent 07 26 99 09 53 21 Service EJ Measure A Pwr ys Time Timebase Frequency _ Timebase Magnitude Frequency 50 MHz Amptd Sensors Spectrum Freq Error Freq Domain mHz Waveform Time Domain iamli More 1 of 2 Chapter 4 143 Making Measurements 50 MHz Amplitude 50 MHz Amplitude Purpose To check the amplitude of the internal 50 MHz amplitude reference signal Measurement Method The amplitude of an internal 50 MHz reference signal is compared with the amplitude of a stable external 50 MHz signal which has been measured with a power meter and then connected to the front panel RF connector Test Setup The 50 MHz
48. to Yes 8 Toggle Prints Page 1 or 2 to select to print either one image in portrait orientation covering half a page or two images in portrait orientation each covering half the page 9 Press the Print key A copy of the current display screen will be sent to the printer according to the parameters set above 10 If you want to reprint the most recently printed page press Reprint 11 If you want to eject a page from a compatible printer toggle More 1 of 2 then Eject Page 12 If a printer failure occurs for example if the printer hangs up press Reset Printer It may also be necessary to cycle printer power Chapter 2 63 Using System Features Using Print and Print Setup Functions The following table illustrates the Print Setup menu Level 1 shows key choices available when the front panel key is pressed Level 2 shows key choices available when Print To is set to Printer and Level 1 keys are pressed Front Panel Key Level 1 Level 2 Print Setup Print To with Printer selected Printer Type None Custom Define Custom Language PCL3 PCL5 Color Printer Yes No Orientation Only active for PCL5 language printers with PCL3 language default to portrait orientation Portrait Landscape Color Print Only active when Color Printis set to Yes see above On Off Prints Page 1 2 More 1 of 2 Reprint Only active after initial printi
49. to a specific trace it will become active on that trace when the Select key is pressed e Delta Places two markers on the selected trace or if a marker is already active places a second marker at the position of the active marker You can activate up to two sets of delta markers Annotation in the active function area and in the upper right corner of the display show differences between the two markers in the units of the window which contains that marker e Off Turns off the selected marker as set by the Select key e Marker All Off Turns off all markers e Shape Allows you to select markers in the shapes of diamonds crosses squares and lines The line markers run vertically from the bottom to the top of the display while the diamond square and cross shapes simply allow you to distinguish different points on the trace by using different shapes You may use up to four different shaped markers at a given time although only one may be active Marker Functions The marker Function menu key enables you to use two marker functions Band Power and Noise These functions do not apply to all measurements if you attempt to press a function key for a function that is not applicable to that measurement a message will appear telling you that the function is not supported under the current measurement These functions are described below Press Marker Function to access the following keys e Band Power Allows you to place two mark
50. to use in a particular measurement Solution 1 Many features are available only for making specific measurements and do not apply to other measurements Verify that the feature you are seeking is available for that particular measurement by examining the key access table on page 53 Notes in the key access path column indicate whether a feature can only be used with a particular measurement You can also review the section which documents the measurement you are using and indicates which features apply to that measurement Solution 2 Some features are only available when using a specific mode Review the section describing the mode to verify that a feature is available Solution 3 Some features of the transmitter tester are not yet available and will be implemented with a future firmware release For an update on the status of firmware upgrades you can check the following URL www agilent com find vsa 180 Chapter5 If You Have a Problem Problem Symptoms and Solutions Frequency Unlock or External Reference Missing Error Messages Symptom A frequency unlock error message or an external reference missing error message appears in the annunciator bar just above the data window Solution 1 The red Ext Ref message indicates that the external reference is not locked The external reference can be any frequency between 1 and 30 MHz If you have connected an external reference you must enter it s frequency into the instrument T
51. value is automatically determined by the measurement results Ref Position Allows you to set the reference position to either Top Ctr center or Bot bottom The default setting is Ctr Scale Coupling Allows you to toggle the scale coupling function between On and Off The default setting is On Upon pressing the Restart front panel key or Restart softkey under the Meas Contro menu this function automatically determines the scale per division and reference values based on the measurement results Chapter 4 119 Making Measurements Making the Waveform Time Domain Measurement If the 1 0 Polar window is active in the Q Polar view the SPAN X Scale or AMPLITUDE Y Scale key accesses the menu to modify the following parameters Q Scale Div Allows you to set the vertical and horizontal scales by changing a value per division The range is 1 00 nV to 20 00 V per division The default setting is 100 0 mV lor Q Origin Allows you to set the reference value ranging from 250 00 to 250 00 V The default setting is 0 00 V The Display key is not available for this measurement Using the Markers The Markerfront panel key accesses the menu to configure the markers Select 1 2 3 4 Allows you to activate up to four markers with the corresponding numbers respectively The selected number is underlined and its function is defined by pressing the Function key The default is 1 Normal Allows you to activate the selected mark
52. 07 TQ Waveform key 93 T Q waveform view TV Q waveform window 119 T Q waveform window 118 119 amplitude Y scale 119 reference position 119 reference value 119 scale coupling 119 scale per division 119 IF Align Signal menu Signal Amptd key 84 Signal Rate key 84 Signal Type key 84 IF Flatness advanced spectrum feature 102 Input Atten key 84 input attenuation 84 input configuration 176 Input menu 50 MHz Ref key 83 1 Q key 83 Port key 83 RF key 83 input port selection 178 input output keys 69 inputs external trigger 29 I and Q 29 inputs configuration 69 Install Now key 39 installing measurement personalities 36 instrument firmware updates 38 internal reference selection 178 IP Address key 69 IQ port selection 178 K key access path 53 key access table 53 key entries 53 key menu maps 20 keyboard attaching external 31 keywords for licensing 74 L LAN keys 69 LAN TP connector 31 Length Ctrl key 101 Length key 101 Level key trigger menu 85 license keys installed 74 Line key 92 line power input 31 linear enevelope window 118 119 linear spectrum window amplitude Y scale 105 reference position 105 reference value 105 scale coupling 105 scale per division 105 Span key 105 Load State key 67 loading an application personality 36 local placing instrument in 76 M making basic measurements 88 Index Index Marker key 95 Marker menu Ba
53. 100000 ia A AA RANA 97 Making the Measurement en sacorprr acia ar ARA AAA 97 T IAEA A AAA AA A ET 98 Changing the Measurement SetuUp oooooooror eee eee tenes 99 e a a Mia a T AAA A E 103 Brora e l E rara AAA 105 a A O 108 Troubleshooting Dt corsocinnas recita de AEREA AAA 109 Making the Waveform Time Domain Measurement 0 0 00 cece ro 110 PURPOSE sine on AAA AAA ARALAR 110 Meceurement Method a AAA A AA AAA eee AAA 110 Making the Measurement cs cacse aces e narra rad er ra a 110 A A Kem eS 111 Changing the Measurement Setup 0 0 0 0 0 e eens 113 Chan sie ine Vis ons ieee O A ee he wea Res 116 Changing the Dipl coronar TRAGA EA 118 site the Market ovaviia rea DepEd S EE E E E E EES 120 Teoublesimoline TINS 2000 54s ocean rat RRA ARA ARA 121 Making the Adjacent Channel Power ACP Measurement ooooooooooooooo 122 PURBORE lt 2 bc edees cera daa 122 Measurement Method lt j0c65o8 c04decrere EEE EE EKETE bide dhe RENEE EEE cou pas 122 Making the Measurement sorire rere rason dra correa aia 123 E A ARAS AAA A E EE re A eee 123 Changing the Measurement Setup ooooooororr rarere 124 Chapines MER E ai E E RI RAR E bnes 128 Teoublesimotine EOM S osnrracirn rad rrrdRAAAAEAA 130 Making the Channel Power Measurement oo oooooooooonr ee ene eens 131 PUPBOSE 24 ar AAA AAA E ew SES 131 Measurement Method 50445060 00 ii Ai 131 Making the Measurement rasocirna trasera ran CdSe An aa 132 A yas e
54. 20 front panel keys 24 Front Panel Test 148 Function key 96 G GPIB Address key 69 GPIB cable 191 GPIB keys 69 H hardware configuration keys 73 Help key 29 Home key 28 Host ID key 74 Host Name key 69 HP 13242G Cable 42 HP 24542G H Cable 42 HP 24542M Cable 43 HP 24542U Cable 41 44 45 HP 5181 6639 Adapter 45 46 HP 5181 6640 Adapter 44 45 HP 5181 6641 Adapter 44 45 HP 5181 6642 Adapter 44 46 HP 92219J Cable 42 HP C2913A C2914A Cable 43 HP F1047 80002 Cable 41 45 46 HP LaserJet printers 191 HP sales and service offices 184 194 HP IB cable 191 I I and Q waveform view I or Q waveform window 106 I or Q waveform window amplitude Y scale 106 reference position 106 reference value 106 scale coupling 107 scale per division 106 span X scale 106 reference position 106 118 reference value 106 118 scale coupling 106 119 scale per division 106 118 I origin 1 4 polar window 120 I Origin key 107 I waveform window amplitude Y scale 119 reference position 119 scale coupling 119 scale per division 119 T O configuring 69 TQ Input Z key 84 1 04 Polar view waveform measurement 120 1 0 polar view 1 4 polar window 107 120 1 4 polar window amplitude Y scale 107 1 4 scale per division 107 Q Origin 107 I origin 120 T Q scale per division 120 Q origin 120 span X scale 107 I Origin 107 1 0 scale per division 1 4 polar window 120 TQ Scale Div key 1
55. 4 Chapter2 Using System Features Key Locations Table 2 1 Key Access Locations Key Key Access Path Clear Error Queue s System Show Errors Color Print Print Setup Print To Printer Printer Type Custom Define Custom Color Printer Yes Color Printer Print Setup Print To Printer Printer Type Custom Define Custom Comb Input IF Align Signal Signal Type Config I O System Corrections System Alignments Counts MODE Basic Meas Setup Current View Trace Trace Display Current Trace Marker More 1 of 2 Marker Trace Custom Print Setup Print To Printer Printer Type CW Input IF Align Signal Signal Type Data Packing Meas Setup More 1 of 2 Decimation Meas Setup More 1 of 2 Advanced More 1 of 2 Define Custom Print Setup Print To Printer Delay Mode Setup Trigger Ext Front Delay Mode Setup Trigger Ext Rear Delay Mode Setup Trigger RF Burst Delay Mode Setup Trigger Video Delta Marker Diagnostics System More 1 of 3 Note Requires Password Display Front Panel Emulated GPIB Name System Config I O SICL Server Emulated GPIB System Config I O SICL Server Logical Unit Emulated GPIB System Config I O SICL Server Address Enter Front Panel ESC Front Panel Chapter 2 55 Using System Features Key Loc
56. 6 POOP A AA OE EE NAAI AA TAA EIT AA EAA A 12 OMA O Eaa NR 144 MN CANT E AAEE E A E EE EA E E A E E AcE 83 P ON 90 Alen 0 MHz Kerenene N E E EAS REA EES a iiia 78 EA E PP E E E E E E 78 AE ANET o E E E E E A A E E A E A E E 77 Ahan CEE Pi A A A 78 o A naan eee Mo E 78 A E E E E A A E E clea atu heared E 78 A E E E E A T T A O O E E A AN T I A A E 78 Ahon Uo E anaa aaa 78 E a oa EIIN TE A EAER EEA A 77 P D A T E E E A E E E E S T A E E 68 a a A en Career rene yet rennet eae cre retennr nr ete Tere weer Torrey er errr ene 77 PI A E E T A ais 85 A VEEE IEAA IAA ENAA ASA EIN A A A T A 90 A ta A E A A E E 91 Pe eis ea eee ae eee eee ent ue 91 PO DUDE A A A AS 91 A 91 Pon T TONET A AN A A AA AS 96 Easeband Alpa Siznal ON OEP a 160 O dos los 82 A ian dat ee ened 82 Clear Er ee a xs odes us sian ss 74 Eds A O tearm e ee Ce Re 63 Col ES A Pe nee A We ere A A ARA A A free om Semen ere eer rer 63 O A 69 ORE E E A T E E E T E 79 Erias i PEE E E SIA I A I N A EE A OS ree A E E T 93 PTT En ii E dtc reas I E E E S E E A S E E ees 63 Denne Lust atada iii E eons 63 A a PEIEE E E E I A E ai een al eee aoe ae 85 DA A A AA AA 96 A meer E EEEE E E A eo aN ee E E T nr ere fer Pe eee E 63 BO GPIB Ad iii indian 71 Bra ted GPIB Leica AA EE 70 Emale A CELE Name AA a ea 70 a E ree rete E EE 77 A A A ete 71 A ia 86 A A 86 ES Loto A AN NA AAA 65 A e AN E 86 do AT nn E E T E E E PE EN E EE N E oat actrees 92 Eren PUB A es ee 92 R E E E E E A AE PE ee E
57. A 71 List of Keys Pront Panel eta ii 148 E hata yates N A eda awed 69 A ata acta S EAN OTA O email een tation cise 82 COP eed are ene dad 65 Foei Ne A 5h dhs cS ich epacece acta cnet fectide incase ind dig e 70 A A 161 AP A deinen T E 159 A yadda een casein ee weet tapenade aaah uaerenisumeaats 162 POTEO Pona 103 A EE 161 REE T rere E A E AE A E Ce E E EA E A A E E A oe T E P E E rer 161 A Reir lps TN a 162 Pla li aa 83 LE OAE E AANA A A AA ieee iasted E EE A A A 65 aiie e A NE E AT E ET T E E E verter E E E E T N E T 84 a a 83 a ar doaspacaha ie cada tac aan nada een ce ee 36 tistemasat Logica Un mora 70 ita Na dd 70 A A a 65 VES ds aa 70 A a E a ies nds cers dentate esses VAEA PERAE OA es ese en eee lee EA AN 63 UO SOUT os cere ree E eee ee eee EEL I re te E E pO TE rete E Teme re Tg E A er reer eer meee T 63 A A nt A ace 85 A ere ere meen eee Pre Gene te ene ree gn rene ere oy Ceara er Teee rr eee ene reer ere ete emer rrr reeree 38 A C OEE lemon tiene AE A EA aes 92 IRE a N E O E A A E AE EION ANE A OE OEE ous T POE E E E TA 67 o E oe E E A eo E E A ae 91 Maerker AO ii 96 Mica P ouai e N 84 MATARO Connetti ls 70 A E I PEA A A ed Magee sy auwa sitar A E EAEE caer E T A deal E E E E E E saad 91 ME O diia ios 91 NOSE cranna a aa na E N dees 96 e a a t r Te RERE RT E E TE O E AT E E AAAI A el meant E E E E AT O TET EN E E I E 95 nn E A A T E A E E E E AN E A ee es 86 AE enn a ada 63 P E anona EN E E 63 A o Cnr ett rnin SET eT
58. Access Locations Key Key Access Path Long Meas Setup More 1 of 2 Advanced More 1 of 2 Data Packing Manual Meas Setup More 1 of 2 Advanced ADC Range Note This feature is used when measurement is set to either spectrum or waveform Marker Front Panel Maximum System Config I O SICL Server Connections Mrkr All Off Marker More 1 of 2 Maximum Meas Setup Average Avg Type Max Total Pwr Input Measure Front Panel Meas BW MODE Basic Meas Setup Meas Control Front Panel Meas Interval MODE Basic Meas Setup Meas Setup Front Panel Medium Meas Setup More 1 of 2 Advanced More 1 of 2 Data Packing Minimum Meas Setup Average Avg Type Min Pnts RBW Meas Setup More 1 of 2 Advanced FFT Size Note This feature is used when measurement is set to spectrum MODE Front Panel Mode Setup Front Panel Next Window Front Panel Noise Marker Function Normal Marker Off Marker Orientation Print Setup Print To Printer Pause Meas Control PCL3 Print Setup Print To File File Type PCL5 Print Setup Print To File File Type Peak Level Mode Setup Trigger RF Burst 58 Chapter2 Using System Features Note This feature is used when measurement is set to spectrum Key Locations Table 2 1 Key Access Locations Key Key Access Path Power Stat CCDF MODE Basic Meas Setup Portrait Print Setup Print To Printer Printer Type C
59. B9 female or DB25 female HP 24542U Cable 24542U Instrument Cable PC 1 1 DCD 2 2 RX 3 3 TX 4 4 DTR 5 5 GND 6 6 DSR 7 7 RTS 8 8 CTS 9 9 RI DB9 DB9 DB9 DB9 Male Female Female Male ca85a HP F1047 80002 Cable F1047 80002 Instrument Cable PC DCD RX DTR GND DSR RTS CTS RI DB9 DB9 DB9 DB9 Male Female Female Male OONDUORWN OOAONDUOARWNH ca86a Chapter 1 41 Getting Started Cables for Connecting to the Serial Port RS 232 Figure 1 7 HP 24542G H Cable 24542G H Instrument Cable PC DCD 1 2 TX TX 3 4 RTS DTR 4 IS 5 CTS GND 5 he 6 DSR DSR 6 7 GND a O el hee CTS 8 20 DTR RI 9 DB9 DB9 DB25 DB25 il Male Female Female Male DB9 DB9 DB25 DB25 ina Male Female Male Female ca87a Figure 1 8 HP 92219J Cable 92219J Instrument Cable PC y 1 ME RX 3 3 RX RTS 4 4 RTS CTS 5 5 CTS DSR 6 6 DSR GND 7 7 GND DTR 20 20 DTR DB25 DB25 DB25 DB25 Female Male Female Male ca83a Figure 1 9 HP 13242G Cable 13242G Instrument Cable PC Printer 1 Shield 2 2 TX 3 RX 8 cD 5 20 DTR 7 GND 4 RTS 12 19 SRTS 11 19 12 SCD 20 5 CTS 6 DSR DB25 DB25 DB25 DB25 Female Male Male Female ca84a 42 Chapter 1 Figure 1 10 Instrument OONDUORWN DB9 DB9 Male Figure 1 11 Instrument C2913A DB25 Female C2914A DB25 Female Figure 1 12 Female 1er e 3 3 4 4 5 5 6 6 7 7 20 20 DB25 Male DB25 Male Getting Started Cables fo
60. BW Allows you to specify the integration bandwidth in which the power is measured The range is 1 000 kHz to 10 0000 MHz with 1 Hz resolution Since Integ BW is coupled to Chan Power Span in the factory default condition if you change the integration bandwidth setting the channel power span setting changes by a proportional amount 1 626 times the integration bandwidth until a limit value is reached Chapter 4 133 Making Measurements Making the Channel Power Measurement Chan Power Span Allows you to set the frequency span for the channel power measurement The range is 1 000 kHz to 10 0000 MHz with 1 Hz resolution This span is used for the current integration bandwidth setting Since Chan Power Span is coupled to Integ BW in the factory default condition if you change the integration bandwidth setting the channel power span setting changes by a proportional amount 1 626 times the integration bandwidth until a limit value is reached However the channel power span can be individually set Advanced Allows you to access the following menu to modify the channel power measurement parameters Sweep Time Allows you to manually change the sweep time and also to toggle the sweep time control between Auto and Man manual The range is 1 0 us to 50 00 ms with 1 us resolution If set to Auto the sweep time derived from the data point setting is shown on this key regardless of the manual entry range Data Points Allows yo
61. Baseband I Q Inputs Option B7C Using Baseband I Q Inputs Option B7C Option B7C Baseband I Q Inputs provides the ability to analyze baseband I Q signal characteristics of mobile and base station transmitters This option may be used only in conjunction with the following personalities e Basic mode available in all VSA Series Transmitter Testers e Option BAF W CDMA Measurement Personality e Option B78 cdma2000 Measurement Personality Chapter 4 151 Making Measurements Using Baseband I Q Inputs Option B7C What are Baseband I Q Inputs Option B7C consists of a Baseband Input module four 50 Q BNC connectors and internal cabling The four BNC connectors are grouped into pairs at the upper left corner of the front panel The upper two connectors labeled I and Q are the unbalanced inputs In practice an unbalanced or single ended baseband measurement of an I or Q signal is made using a probe connected to the I or Q connector A simultaneous I Q unbalanced single ended measurement may be made using two probes connected to the I and Q input connectors If balanced signals are available they may be used to make a more accurate measurement Balanced signals are signals present in two separate conductors are symmetrical about ground and are opposite in polarity or out of phase by 180 degrees Measurements using balanced signals can have a higher signal to noise ratio improving accuracy Noise
62. Counts Allows you to set the accumulated number of sampling points for data acquisition The range is 1 000 kpoints to 2 000 Gpoints with 1 or 10 kpoints resolution While this key is activated enter a value from the numeric keypad by terminating with one of the unit keys shown e Meas Interval Allows you to specify the time interval over which the measurement is made The range is 100 0 us to 10 00 ms with 1 us resolution 138 Chapter 4 Making Measurements Making the Power Stat CCDF Measurement Changing the View The View Trace key is not available for this measurement Changing the Display The Display key allows you to control the desired trace and line displays of the power statistics CCDF curves The currently measured curve is always shown See Figure 4 13 on page 137 for an example of a power statistics CCDF measurement display e Store Ref Trace Allows you to copy the currently measured curve as the user definable reference trace The captured data will remain until the other mode is chosen Pressing this key refreshes the reference trace e Ref Trace Allows you to toggle the reference trace display function between On and Off e Gaussian Line Allows you to toggle the Gaussian line display function between On and Off The Span X Scale key accesses the menu to set the desired horizontal scale e Scale Div Allows you to enter a numeric value to change the horizontal display sensitivity The range i
63. DE Y Scale Scale Div 100 0 mV 1 Q Polar View T Q Scale Div 100 0 mV Tor Q Origin 0 00 V Advanced Pre ADC BPF Off RBW Filter Gaussian ADC Range Auto Data Packing Auto ADC Dither Off Decimation Off NOTE Parameters that are under the Advanced key seldom need to be changed Making Measurements Making the Waveform Time Domain Measurement Changing the Measurement Setup This table shows the factory default settings for waveform time domain measurements Any changes from the default values may result in invalid measurement data Make sure the Waveform Time Domain measurement is selected under the MEASURE menu Press the Meas Setup key to access a menu which allows you to modify the averaging and trigger source for this measurement as described in the Measurement Setup section Chapter 4 113 Making Measurements Making the Waveform Time Domain Measurement In addition the following parameters can be modified Sweep Time Allows you to specify the measurement acquisition time which is used as the length of the time capture record The range is 1 0 us and 100 0 s depending upon the resolution bandwidth setting and the available internal memory size for acquisition points Res BW Allows you to set the measurement bandwidth The range is 10 Hz to 7 5 MHz A larger bandwidth results in a larger number of acquisition points and reduces the maximum value allowed for the sweep time
64. I Q measurements are a valuable means of making qualitative analyses of the following operating characteristics e TQ signal layer access for performing format specific demodulation measurements e g CDMA GSM W CDMA e Modulation Accuracy i e I Q plane metrics Rho Error Vector Magnitude RMS peak 95 carrier feed through frequency error magnitude and phase errors e Code domain analysis including code specific metrics e CCDF of I7 Q e Single Sideband SSB metrics for assessing output quality e Basic analysis of I and Q signals in isolation including DC content RMS P P levels CCDF of each channel Comparisons of measurements made at baseband and RF frequencies produced by the same device are especially revealing Once signal integrity is verified at baseband impairments can be traced to specific stages of up conversion amplification or filtering by RF analysis Likewise impairments to signal quality that are apparent at RF frequencies may be traceable to baseband using baseband analysis Chapter 4 153 NOTE Making Measurements Using Baseband I Q Inputs Option B7C Making Measurements with Baseband I Q Inputs Baseband I Q measurements are similar to RF measurements To avoid duplication this section describes only the details unique to using the baseband I Q inputs For generic measurement details refer to the previous Making Measurements sections The following measurem
65. NSe VOLTage 1Q RANGe UPPer lt level gt SENSe VOLTage 1Q RANGe UPPer Selects upper voltage range when I or Q port is selected This setting helps set the gain which is generated in the variable gain block of the baseband IQ board to improve dynamic range 178 Chapter 4 If You Have a Problem This chapter will help you identify the causes of some problems you may encounter offers warranty information and provides instructions for returning your instrument to Agilent Technologies For information about error messages and functional tests see the Instrument Messages and Functional Tests document 179 If You Have a Problem Problem Symptoms and Solutions Problem Symptoms and Solutions The following section describes some transmitter tester problem symptoms and possible solutions to those problems They include Key or Feature Does Not Appear in Menu on page 180 Frequency Unlock or External Reference Missing Error Messages on page 181 LAN External Loopback Test Failed Error Message on page 181 Instrument Fails Alignment Error Message on page 181 Measurement Keys Do Not Appear after Pressing the Mode Key on page 182 Instrument Power On Problem on page 182 LAN Communication Problem on page 182 Instrument Keyboard is Locked on page 182 Key or Feature Does Not Appear in Menu Symptom You are unable to locate a key for a feature you want
66. NY i EI ODO EA Cio O00 amp z Ba Gaa 17 16 15 14 13 12 11 10 pasia 1 ESC key Use the escape key to exit any function without modifying current parameters Pressing the ESC key will e Clear any numeric entry that you have begun to enter but decided you want to cancel e Remove any entries that are visible in the active function area of the display see the section on annotation on page 33 for a description of the active function area and other display features e Cancels an alignment if one is in progress 2 Control keys Sets parameters that are used by the measurement in the current measurement mode 24 Chapter 1 Getting Started Front Panel Description FREQUENCY Channel accesses softkeys that control the center frequency or channel number These parameters apply to all measurements in the current mode SPAN X Scale accesses softkeys that control the horizontal scale in units of frequency time symbols or bits The parameters in this menu apply only to the active window in the current measurement See page 93 for more detail AMPLITUDE Y Scale accesses softkeys that control vertical scale functions in units of dBm dB volts degrees or radians The parameters in this menu apply only to the active window in the current measurement See page 93 for more detail 3 Input key The Input key accesses softkeys that control the input of the transmitter tester These affect all measurements within the current mode
67. P Measurement Bar Graph View 8 Agilent 07 26 99 09 53 21 Basic i Measure CA Ref Spectrum Freq Domain im o Waveform Time Domain ACP Channel Power Total Pur Ref 89 dBm 1 23 MHz ACP Lower Offset Freq Integ BH dBc gt 4 Changing the Measurement Setup The next table shows the factory default settings for adjacent channel power ratio measurements Adjacent Channel Power Measurement Defaults Measurement Parameter Factory Default Condition View Trace Bar Graph Total Pwr Ref Spectrum Trace On Averaging Averaging Number On 10 Avg Mode Repeat Ref Channel Chan Integ BW 1 23000 MHz Avg Type Pwr Avg RMS Offset Limits Offset A Offset Freq 750 000 kHz On offset A Offset Side Both Ref BW 30 000 kHz Avg Type Pwr Avg RMS 124 Chapter 4 Table 4 4 Making Measurements Making the Adjacent Channel Power ACP Measurement Adjacent Channel Power Measurement Defaults Measurement Parameter Factory Default Condition Limit Setup Abs Limit 0 00 dBm Fail Relative Rel Lim Car 45 00 dBc offset A Rel Lim PSD 28 87 dB offset A Meas Type Total Pwr Ref Trig Source Free Run Immediate Fast ACP Off Limit Test On Ref Chan Adv Sweep Time 546 1 us Auto Data Points 2048 Auto Res BW 1 620 kHz grayed out Num FFT Seg 1 Auto Offset Adv Sweep Time 11 20 ms Auto Data Points 1024 Auto Res BW 79 0 Hz grayed out Num FFT Seg 1 Auto Relative Atten 0 00 dB
68. Power Channel Power Center Freq 0 Hz ACP FFT Fast Bar Graph Measurement n a Spectrum Not Available Power Stat CCDF CCDF none CCDF Spectrum Spectrum Spectrum Center Freq 0 Hz Freq Domain Spectrum Linear Spectrum Linear Spectrum Views I and Q Waveform I and Q Waveform Y axis Volts dBm I Q Polar 1 Q Polar Spectrum Linear Waveform Signal Envelope Signal Envelope Y axis Volts dBm Time Domain 1 Q Waveform 1 Q Waveform Linear Envelope I Q Polar T Q Polar Linear Envelope I and Q Waveform Results screens for the above measurements unique to Baseband I Q inputs are shown in the section Baseband I Q Measurement Result Examples on page 168 Chapter 4 167 Figure 4 17 Making Measurements Using Baseband I Q Inputs Option B7C Baseband I Q Measurement Result Examples The following section shows examples of new measurement result displays using Baseband I Q Inputs A notation below each example indicates the nature of the input signal Channel Power Measurement There is a new view for Channel Power measurements with Baseband 1 Q Inputs the Channel Power Spectrum view with 0 Hz center frequency This measurement is not available if Input Port menu is set to only or Q Only as the total I Q channel power cannot be measured Basic Mode Channel Power Baseband I Q Inputs 3 Agilent 08 01 01 15 46 15 Basic Measure Spectrum Base Baseband 1 0 Freq Domain Channel Pow
69. Range is set below the default and the error message Input Overload is displayed this value may be adjusted to its maximum Beyond that point the signal must be attenuated to preserve the measurement accuracy Using a lower value than the default can provide an increased dynamic measurement range 1 Q Setup lets you adjust the following e I Offset Use Offset to input a value in Volts to offset the measured I value The default value is 0 0000 Volts the min max values are 2 5600 Volts The tuning increment depends on the Q Range setting as shown in Table 4 9 This value only affects the displayed results and does not appear as a correcting voltage at the probe Chapter 4 161 Making Measurements Using Baseband I Q Inputs Option B7C Table 4 9 I and Q Offset Increment vs 1 Q Range I and Q VQ Range Offset Increment 1 Volt 2 mV 500 mV 1 mV 250 mV 5 mV 125 mV 25 mV e Q Offset Use Q Offset to input a value in Volts to offset the measured Q value The default value is 0 0000 Volts the min max values are 2 5600 Volts The tuning increment depends on the Q Range setting as shown in Table 4 9 This value only affects the displayed results and does not appear as a correcting voltage at the probe e T Q Input Z This key lets you access a menu to select an input impedance for baseband I Q input signals The selection of input impedance is coupled to a connector balance configurat
70. Re ewe Cees ey E OR aR Be SA TO Ree h es 132 Contents Changing the Measurement Setup 0 0 0 cc cece eee een nen ne enns 133 Changing The Display ise cacerer goede EA 135 Using the Marker py cc oka cane rara A AAA Aa as 135 Troubleshooting Hants occ rr PRI ORN eR 135 Making the Power Stat CCDF Measurement 0000 cece cence nee nes 136 PIPAS 1090 00 ida da A ad a 136 Measurement Method cscs cca cdoeed ede kiwi ee bea iran EEE Aia 136 Making the Measurement ibid AAA 137 Pago ee a eres teers Oh cure eee E T ETT ENT 137 Changing the Measurement Setup 00 0 e een nena 138 Changing the VIEW gcca nia datada cehedek ben che ER AA eden eben ex 139 Changing the Displar aorta rra 139 Using oe Markee ciar iii A a dda AA AAA AAA ds 140 Troubleshooting Mints ia A RN A Kee EER RRS 140 Service Measurements cane icc dia caeese ec ee Seeds kde s Sees rra EK ESSE DEE EOS 141 Timebase Frequency sn coos sae eso be oe de ei SHS eGR eERHSEe Powe REWER ER awRR RS 142 A tan rens oot Eset eo tages a E 142 Measurement Method 0 iw ince ed caw ban e eB 142 TEAL OCCU aces acer este ehen cede ene ARO An 142 ese cc tS RUE EAT TE SERS E SWS CAPR NEP AWRERSRS Cah a eR ERS 143 50 MHz Amplitude cc eee ced eeheeeedd ee eed O 144 PUP HOE 694 an av ad beds mala thaeaen wate ceeee A E ewes dapnere eee eas 144 Measurement Method 0 ccc cesti etrese i kipti urs ikissru nii 144 A SHRED aerar aeaaea 144 a E A AET TAES ATTE ATTE EA T A
71. T Input Port ff RF Baseband 1 0 Spectrum Freq Domain 1 0 Linear Spectrum 50 MHz Ref Trig Free 170 Chapter4 Figure 4 21 Figure 4 22 Making Measurements Using Baseband I Q Inputs Option B7C Waveform Time Domain Measurement There are two new views with Baseband I Q input Waveform Time Domain measurements the Linear Envelope view with the vertical scale in Volts and the I and Q Waveform view with separate windows for the I and Q traces Basic Mode Waveform Linear Envelope Baseband I Q Inputs d Agilent 08 01 01 17 00 31 Basic _ View Trac Baseband 1 0 ead Waveform Time Domain A OO o X Scale Div 10 us Line Ref 200 0 ml Linear Envelope Ee 1 0 Haveft lan Havef 0 00 ps 00 00 ps 1 QPo 0 00 ps Basic Mode I and Q View Waveform View Baseband I Q Inputs d Agilent 08 02 01 11 44 19 Basic View Trace Baseband 1 0 Signal Waveform Time Domain sues Y Scale Div 20 0 mV Linear I Waveform Envelope 1 0 Waveform 26 08 ps 1 0 Polar Q Waveform Free 0 00 ps 20 00 ps Chapter 4 171 Table 4 11 Making Measurements Using Baseband I Q Inputs Option B7C Baseband 1 Q Key Access Locations All Baseband I Q input setup and operation features can be located by using the key access table below The key access path shows the key sequence you enter to access a particular key Some features can only be used when specific measuremen
72. The Return key exits the current menu and returns you to the previous menu If you are on page one of a multi page menu a menu with a More key the Return key will exit the multi page menu When you activate a different measurement the return list is cleared The Return key will not return you to the previously activated mode nor will it alter any values you have entered on previous menus 15 Navigation keys are used to move around in the display and to return to the previous menu e The Tab Left feature is not implemented This feature will be implemented with a future firmware update e The Tab Right feature is not implemented This feature will be implemented with a future firmware update e The Home feature is not implemented This feature will be implemented with a future firmware update 16 Window keys are used to move to a different window in the display or to zoom the windows being displayed e The Next Window key switches between windows When a single window is being viewed it switches to display the next window which is contained in the current multi window display which however is not initially visible on the display When viewing multiple windows it activates the next window on the display The active window is indicated by a green border e The Zoom key allows you to switch between a multiple window screen and a full size display of the window that is active 17 Help key The Help feature is not
73. To manually set either Scale Div or Ref Value values Scale Coupling must be Off e With the AMPLITUDE Y Scale key Scale Div Allows you to set the vertical scale by changing the amplitude value per division The range is 1 00 nV to 20 00 V per division The default setting is 100 0 mV However since the Scale Coupling default is On this value is automatically determined by the measurement results To manually set this value Scale Coupling must be Off Ref Value Allows you to set the reference value ranging from 250 00 to 250 00 V The default setting is 0 00 V However since the Scale Coupling default is On this value is automatically determined by the measurement results To manually set this value Scale Coupling must be Off Ref Position Allows you to set the reference position to either Top Ctr center or Bot bottom The default setting is Ctr 106 Chapter 4 Making Measurements Making the Spectrum Frequency Domain Measurement Scale Coupling Allows you to toggle the scale coupling function between On and Off The default setting is On The Restart front panel key or Restart softkey under the Meas Control menu this function automatically determines the scale per division and reference values by the measurement results To manually set either Scale Div or Ref Value values Scale Coupling must be Off Changing the I Q Polar Window Ifthe 1 0 Polar window is active in the Q Polar view the SPAN X
74. User s Guide Agilent Technologies E4406A VSA Series Transmitter Tester oft Agilent Technologies Manufacturing Part Number E4406 90177 Supersedes E4406 90145 Printed in USA September 2001 Copyright 1999 2001 Agilent Technologies Inc WARNING CAUTION WARNING WARNING CAUTION The information contained in this document is subject to change without notice Agilent Technologies makes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Agilent Technologies shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material Safety Information The following safety notes are used throughout this manual Familiarize yourself with these notes before operating this instrument Warning denotes a hazard It calls attention to a procedure which if not correctly performed or adhered to could result in injury or loss of life Do not proceed beyond a warning note until the indicated conditions are fully understood and met Caution denotes a hazard It calls attention to a procedure that if not correctly performed or adhered to could result in damage to or destruction of the instrument Do not proceed beyond a caution sign until the indicated conditions are fully understood and met
75. ale Keys 94 Scale Div key This key enables you to set the dB Division for the Spectrum and the RF Envelope windows or V Division for the I Q window Ref Value key This key allows you to set the value of the reference in units of dB for the RF Envelope window or in units of mV for the I Q window Ref Position key This key allows you to move the current reference level to the top center or bottom of the display Chapter4 NOTE Making Measurements Preparing for Measurements Using Markers Markers enable you to make measurements on screen Keys in the Marker menu control the number and types of markers you can access Trace keys allow you to select the trace on which you will activate a marker The Search key enables you to perform an immediate peak search and activate a marker at the peak signal Paths to access any of the features listed below will be found next to the specific key listed in the key access table which begins on page 53 Trace The Trace keys allow you to select the trace that will be used for the other marker keys You can then use marker features to obtain the results you desire To access Trace keys press Marker Trace The selections in the Trace menu include traces on all windows for the current measurement including windows that are not currently displayed When making waveform measurements you can activate the following trace keys RF Envelope and I Q Waveform keys When makin
76. allows you to view complex components of the same signal without changing settings or measurements The waveform measurement can be used to perform general purpose power measurements to a high degree of accuracy Measurement Method The instrument makes repeated power measurements at a set frequency similar to the way a swept tuned spectrum analyzer makes zero span measurements The input analog signal is converted to a digital signal which then is processed into a representation of a waveform measurement The measurement relies on a high rates of sampling to create an accurate representation of a time domain signal This measurement is available for use with both the RF input and baseband I Q inputs For details on Baseband I Q operation see the section on Using Baseband I Q Inputs Option B7C on page 151 Making the Measurement The factory default parameters provide a good starting point You may want to change some of the settings Press Meas Setup More 1 of 2 Restore Meas Defaults at any time to return all parameters for the current measurement to their default settings Press MEASURE Waveform Time Domain to immediately make a waveform time domain measurement To change any of the measurement parameters from the factory default values refer to the Changing the Measurement Setup section for this measurement 110 Chapter 4 Figure 4 5 Making Measurements Making the Waveform Time Domain Measurement
77. ally 115 V 47 to 440 Hz or at nominally 230 V 47 H to 66 Hz The input power ranges for the power supply are 90 to 132 V or 195 to 250 Vrms The power supply automatically senses the input power and switches between these two ranges There is no customer replaceable power fuse When on the instrument consumes less than 350 W when in standby less than 20 W 8 KYBD This feature is not implemented This feature will be implemented with a future firmware update The KYBD enables connection of an external PS 2 keyboard using a 6 pin mini DIN connector If no keyboard is available you can use the numeric keyboard and the Alpha Editor menu key feature to make the entries The keyboard must be plugged into the instrument prior to powering the instrument on or the keyboard will not work 9 GPIB The GPIB allows the connection of a General Purpose Interface Bus GPIB cable which enables remote instrument operation 10 LAN TP The LAN TP connector can be used as a SICL server emulating IEEE 488 2 protocol over LAN for a telnet programming port that can be sent SCPI commands for a TCP IP socket programming port that can be sent SCPI commands for anonymous FTP operations to retrieve a screen gif or screen xwd file from the ftp pub NOTE For more information on remote programming with your transmitter tester refer to the programmer s guide Chapter 1 31 Getting Started Rear Panel Description 11
78. amplitude feature enables you to measure the amplitude of the internal 50 MHz reference signal The amplitude of an internal 50 MHz reference signal is adjusted as close as possible to 25 00 dBm based on the relative measurement of the reliable external 50 MHz signal which is input by the user into the front panel RF connector Follow these steps to measure the amplitude of the 50 MHz amplitude reference signal a power meter and a reliable external source will be needed to perform this test 1 Set the external source to a frequency of 50 MHz at a power level of 25 dBm 2 dBm 2 Connect the external source to the power meter through a cable Adjust the power output of the source until the power meter reads 25 00 dBm or as close to 25 00 dBm as possible 3 Disconnect the power sensor and connect the source to the transmitter tester 4 Press Mode Service Measure 50 MHz Amptd on the transmitter tester See next page for results 144 Chapter 4 Making Measurements 50 MHz Amplitude Results Window One RF Magnitude Shows the amplitude unitless of the external source as measured by the transmitter tester Window Two Cal Magnitude Shows the amplitude unitless of the 50 MHz input calibrator Window Three Error Shows a stripchart of the amplitude error between the 50 MHz internal calibrator and the external source amplitude Window Four numeric results Cal Amplitude The instrument s internal ADC
79. ansmitter measurements ACP error vector magnitude occupied BW And general transmitter measurements spectrum frequency domain 186 Chapter 6 Options and Accessories Options and Measurement Personalities waveform time domain It includes NADC PDC Guide which contains measurement and programming information Option HN1 iDEN Measurement Personality Provides DEN transmitter measurements ACPR bit error rate occupied bandwidth And general transmitter measurements spectrum frequency domain waveform time domain It includes DEN Measurement Guide which contains front panel operation and programming commands Option BAF W CDMA Measurement Personality Provides 3GPP W CDMA transmitter measurements channel power ACPR ACLR intermodulation multi carrier power spectrum emission mask occupied BW code domain power modulation accuracy composite EVM QPSK EVM power statistics CCDF And general transmitter measurements spectrum frequency domain waveform time domain It includes W CDMA Guide which contains measurement and programming information Option B78 cdma2000 Measurement Personality Provides cdma2000 transmitter measurements channel power ACPR intermodulation spectrum emission mask occupied BW code domain power modulation accuracy composite rho Chapter 6 187 Options and Accessories Options and Measurement Personalities QPSK EVM power statistics CCDF
80. asurement using settings and a display unique to that measurement Data acquisitions will automatically begin provided trigger requirements if any are met 88 Chapter 4 NOTE Making Measurements Preparing for Measurements Preparing for Measurements If you want to set the Basic mode to a known factory default state press Preset This will preset the mode setup and all of the measurements to the factory default parameters Pressing the Preset key does not switch instrument modes To preset only the settings that are specific to a specific measurement select the measurement and press Meas Setup More Restore Meas Defaults This will set the measure setup parameters to the factory defaults for the currently selected measurement only Initial Setup Before making a measurement make sure the mode setup and frequency channel parameters are set to the desired settings Refer to the sections Mode Setup and Selecting the Frequency Channel in the previous chapter How to Make a Measurement The following table summarizes the steps you will follow in making a measurement Step Primary Key Setup Keys Related Keys 1 Select amp setup a mode Mode Mode Setup Input Frequency System Channel 2 Select amp setup a measurement Restart Measure Meas Setup Meas Control 3 Select amp setup view View Trace Span X Scale File Save Amplitude Y Scale Display Print Print Setup
81. asurement Method The measurement uses digital signal processing to sample the input signal and convert it to the frequency domain With the instrument tuned to a fixed center frequency samples are digitized at a high rate converted to I and Q components with DSP hardware and then converted to the frequency domain with FFT software This measurement is available for both the RF input and baseband I Q inputs For details on Baseband I Q operation see Using Baseband I Q Inputs Option B7C on page 151 Making the Measurement The factory default parameters provide a good starting point You will likely want to change some of the settings Press Meas Setup More 1 of 2 Restore Meas Defaults at any time to return all parameters for the current measurement to their default settings Press Measure Spectrum Freq Domain to immediately make a spectrum measurement To change any of the measurement parameters from the factory default values refer to the Changing the Measurement Setup section for this measurement Chapter 4 97 Figure 4 1 Making Measurements Making the Spectrum Frequency Domain Measurement When using the baseband I Q inputs set Input Port to I Q only or Q only configure the Q Setup parameters and supply the baseband I Q signals to the front panel I Q inputs The available trigger sources for this measurement includes Q Level Results A display with both a Spectrum window and an I Q Wave
82. ations Table 2 1 Key Access Locations Key Key Access Path Exit Main Firmware System More 1 of 3 More 2 of 3 Install Ext Front Mode Setup Trigger Ext Rear Mode Setup Trigger Fast ACP Mode ACP Meas Setup More 1 of 2 FFT Length Meas Setup More 1 of 2 Advanced FFT Size Note This feature is used when measurement is set to spectrum FFT Size Meas Setup More 1 of 2 Advanced Note This feature is used when measurement is set to spectrum FFT Window Meas Setup More 1 of 2 Advanced Note This feature is used when measurement is set to spectrum File Front Panel File System System More 1 of 3 More 2 of 3 File Location Print Setup Print to File File Type Print Setup Print to File Flat Top Meas Setup More 1 of 2 Advanced FFT Window Frame MODE Basic Meas Setup Trig Source Free Run Meas Setup Trig Source FREQUENCY Front Panel Channel Freq Ref System Reference Front Panel Test MODE Service More 1 of 2 Function Marker More 1 of 2 Gaussian Meas Setup More 1 of 2 Advanced FFT Window GIF Print Setup Print To File File Type GPIB Address System Config I O GSM MODE Hamming Meas Setup More 1 of 2 Advanced FFT Window Hanning Meas Setup More 1 of 2 Advanced FFT Window Help Front Panel Host Name System Config I O IF Align Input Input Port 56 Chapter2 Using System Features Key Locations Table 2 1 Key Access Locations Key Key Access Path IF Align Signal Input Image Print Setu
83. aults are restored a message will appear informing you that alignment is needed e Visible Align When toggled to Off the alignment traces which are visible in the display during an alignment will be turned off and the alignment process will take less time When set to High every alignment trace is shown resulting in the alignment taking more time than when Visible Align is set to Low the default state where one out of ten traces is shown Note that text showing alignment results is displayed on screen when any alignment is activated even when the visible alignment is set to Off Chapter 2 79 Using System Features Using System Configuration and Alignment Keys 80 Chapter2 Setting the Mode A set of mode parameters such as input and trigger settings applies to each mode These settings affect all measurements and measurement setup parameters in the current mode 81 NOTE Setting the Mode Selecting a Mode Selecting a Mode The Mode menu key is used to select the measurement personality you have purchased with your instrument or to select the basic or service modes which are native to the instrument Upon turn on the instrument will default to the basic mode e Mode Accesses the measurement personality mode Press the key that corresponds to the mode you want to select such as GSM or cdmaOne For a full explanation of the personality mode you have purchased see the documentation which comes with that
84. baseband signals to be measured lie in a trace on a circuit board and are sensitive to loading by the probe When making 1 M Q measurements the reference input impedance may be adjusted For details refer to Selecting Baseband I Q Inputs on page 159 1 M Q unbalanced measurements may be made as follows I only measurement using one single ended probe connected to the I input connector Q only measurement using one single ended probe connected to the Q input connector I Q measurement using two single ended probes connected to the I and Q input connectors 1 MQ Balanced High input impedance measurements may also be made if differential or balanced signals are available 1 M Q balanced measurements may be made as follows I only measurement using one differential probe or two single ended probes connected to the I and I inputs Q only measurement using one differential probe or two single ended probes connected to the Q and Q inputs I Q measurement using two differential probes or four single ended probes connected to the I Q I and Q input connectors This is the measurement method of choice if differential or balanced baseband signals to be measured lie in a trace on a circuit board and are sensitive to loading by the probe When making 1 M Q measurements the reference input impedance may be adjusted For details refer to Selecting Baseband I Q Inputs on page 159 Chapter 4 157 Making Measure
85. connected to a neutral earthed pole of the power supply This instrument has autoranging line voltage input be sure the supply voltage is within the specified range VENTILATION REQUIREMENTS When installing the product in a cabinet the convection into and out of the product must not be restricted The ambient temperature outside the cabinet must be less than the maximum operating temperature of the product by 4 C for every 100 watts dissipated in the cabinet If the total power dissipated in the cabinet is greater than 800 watts then forced convection must be used Chapter 1 47 WARNING WARNING Getting Started Safety Considerations Instrument Operation and Maintenance The following warnings explain conditions which affect the safe operation of the instrument If this instrument is not used as specified the protection provided by the equipment could be impaired This product must be used in a normal condition in which all means for protection are in tact only To prevent electrical shock disconnect the E4406A from mains before cleaning Use a dry cloth or one slightly dampened with water to clean the external case parts Do not attempt to clean internally Explanation of Safety Symbols that are on the Instrument The following list describes all safety symbols that are on the front and rear panels of the transmitter tester The instruction documentation symbol The product is marked with this
86. coupled into each conductor equally in a common mode to both signals may be separated from the signal The measure of this separation is common mode rejection To make a balanced measurement the lower two connectors labeled I and Q are used in conjunction with the I and Q inputs The terms T bar and Q bar may be applied to the signals as well as the inputs themselves Probes customer provided must be used to input balanced baseband I Q signals This may be referred to as a balanced measurement Balanced baseband measurements are made using the I and I connectors for I only signal measurements while the Q and Q connectors are used for a Q only signal measurement Balanced measurements of I Q require differential probe connections to all four input connectors For details of probe selection and use refer to Selecting Input Probes for Baseband Measurements on page 156 152 Chapter 4 Making Measurements Using Baseband I Q Inputs Option B7C What are Baseband I Q Signals In transmitters the term baseband I Q refers to signals that are the fundamental products of individual I Q modulators before the I and Q component signals are combined and before up conversion to IF or RF frequencies In receivers baseband I Q analysis may be used to test the I and Q products of I Q demodulators after an RF signal has been down converted and demodulated Why Make Measurements at Baseband Baseband
87. d the key label for that feature will appear as lighter colored text will be greyed out or will not be displayed at all Table 2 1 Key Access Locations Key Key Access Path 10 MHz Out System Reference 50 MHz Amptd MODE Service 50 MHz Ref Input Input Port ADC Dither Meas Setup More 1 of 2 Advanced More 1 of 2 ADC Range Meas Setup More 1 of 2 Advanced Note This feature is used when measure is set to either spectrum or waveform Adjust Now System Alignments Align Subsystem Align 50 MHz Reference Note Requires Password Advanced Meas Setup More 1 of 2 Align 50 MHz System Alignments Align Subsystem Reference Note Requires Password Align ADC System Alignments Align Subsystem Align All Now System Alignments Align IF System Alignments Align Subsystem Align RF System Alignments Align Subsystem Alignments System Align Subsystems System Alignments All View Trace Trace Display Alpha Editor The Alpha Editor is accessed by following the Menu Access Paths that accompany the following key entries Choose Option License Key and Host Name AMPLITUDE Front Panel Y Scale Auto Meas Setup More 1 of 2 Advanced More 1 of 2 Data Packing Chapter 2 53 Using System Features Key Locations Table 2 1 Key Access Locations Key Key Access Path Auto Meas Setup More 1 of 2
88. e radio specifications recommend some common setups as shown in the following table Table 4 3 ACP Setup Recommendation Reference Band Test Unit da Integration ac i Bandwidth IS 95 A Mobile 900 kHz 30 kHz Total Power in 1 23 MHz 1 98 MHz 30 kHz Base 750 kHz 30 kHz PSD Ref 1 98 MHz 30 kHz J STD 008 Mobile Base 885 kHz 30 kHz Total Power in 1 23 MHz 1 25625 MHz 12 5 kHz 2 75 MHz 1 MHz Making the Measurement The factory default settings provide a good starting point For special requirements you many want to change some of the settings Press Meas Setup More Restore Meas Defaults at any time to return all parameters for the current measurement to their default settings Select the desired center frequency as described in the Changing the Frequency Channel section Press MEASURE ACP to immediately make an adjacent channel power ratio measurement To change any of the measurement parameters from the factory default values refer to the Changing the Measurement Setup section of this measurement Results The following figure shows an example result of ACP Total Pwr Ref measurements in the bar graph window The absolute and relative power levels on both sides of the carrier frequency are displayed in the graphic window and text window Chapter 4 123 Figure 4 10 Table 4 4 Making Measurements Making the Adjacent Channel Power ACP Measurement AC
89. e 1 Q INPUT connectors Chapter 4 103 Making Measurements Making the Spectrum Frequency Domain Measurement e land Q Waveform Provides the individual views of the I and Q signal waveform windows in the parameters of voltage versus time Figure 4 3 Spectrum Measurement I and Q Waveform View Me Agilent 06 27 01 18 25 00 Basic __ Viem Trace _ __R G O00IIAAAA ee Ch Freq 1 00000 GHz PTI a Spectrum Spectrum Freq Domain Y Ref 40 0 mV I Waveform 1 0 Polar Capture Time 62 70 ps Q Haveform PreFFT BH 16 MHz Capture Time 6 e Q Polar Provides a view of the I Q signal polar vector graph Figure 4 4 Spectrum Measurement 1 Q Polar View 3 Agilent 06 27 01 18 30 39 Basic __ Viem Trace a A ee Ch Freq 1 00000 GHz Spectrum Freq Domain Y Ref 40 0 mV 1 0 Polar 1 0 Polar I I Origin 0 00 Y 104 Chapter4 Making Measurements Making the Spectrum Frequency Domain Measurement Changing the Display The Span key under the Meas Setup menu controls the horizontal span of the Spectrum Linear window If the SPAN X Scale key is pressed this Span key is activated while the AMPLITUDE Y Scale key allows you to access the menus to modify the vertical parameters depending on the selected windows Changing the Linear Spectrum Display Ifthe Linear Spectrum window is active in the Spectrum Linear view the SPAN X Scale and AMPLITUDE Y Scale keys access the menus to modify the following para
90. e Spectrum Linear view Occupied Bandwidth and Channel Power results are also displayed using a center frequency of 0 Hz The center frequency of baseband I Q Spectrum displays is 0 Hz Frequencies higher than 0 Hz are displayed as positive and those below 0 Hz are negative The negative portion of a multi channel baseband signal below 0 Hz corresponds to the portion of the signal that would lie below the carrier center frequency when it is upconverted if no spectral inversion occurs As 0 Hz is a fixed center frequency the FREQUENCY Channel front panel key has no active menu for baseband I Q Spectrum measurements I only and Q only Spectrum views are conventional displayed with 0 Hz at the left margin of the x axis When upconverted or multiplied an I only or Q only signal could ultimately lie above or below the carrier center frequency but in either case it will only occupy half the bandwidth As 0 Hz is a fixed start frequency the FREQUENCY Channel front panel key has no active menu keys Use Span to change horizontal scale The center frequency is displayed as half the current Span Chapter 4 165 Making Measurements Using Baseband I Q Inputs Option B7C Waveform Views for Baseband I Q Inputs For Waveform measurements two new displays are available exclusively for baseband I Q input signals the I and Q Waveform view which separates the individual I and Q traces and the I Q Polar view Since the x axis for Wav
91. e ended unbalanced or is balanced To select an input impedance press Input Output I Q Setup VQ Input Z to display the following choices e 50Q Unbalanced Select to use I and or Q input connectors e 600 Q Balanced Select to use either I and I Q and Q or all four I Q I and Q input connectors e 7MQ Unbalanced Select to use I and or Q input connectors in an unbalanced mode When Q Input Zis set to a 1 M Q selection balanced or unbalanced the setting for Q Z Ref for Input Z 1MQ key may be adjusted Otherwise the default value for Q Z Ref 1M Qis 500 e 1MQ Balanced Select to use either I and I Q and Q or all four I Q I and Q input connectors to make a balanced measurement When IQ Input Zis set to a 1 M Q selection balanced or unbalanced the setting for VQ Z Ref for Input Z 1MQ key may be adjusted Otherwise the default value for I Q Z Ref 1 M Qis 50 Q You can select only or Q only in the Input Output Input Port menu with any impedance selection I Q Input Z Menu Option B7C Baseband I Q Inputs Installed 26 Agilent 08 01 01 12 50 36 Basic 1 0 Input Z EA EEN Baseband 1 0 50 x unbalanced Spectrum Freq Domain I Offset 0 0000 Y dBm Spectrum 1 0 Haveform Capture Time 18 7 164 Chapter4 Making Measurements Using Baseband I Q Inputs Option B7C Baseband I Q Measurement Views Measurement result views made in Basic mode are available for baseband signals if they re
92. e fastest possible measurement Relative Atten Allows you to set a relative amount of attenuation for the measurements made at your offsets The amount of attenuation is always specified relative to the attenuation that is required to measure the carrier channel Since the offset channel power is lower than the carrier channel power less attenuation is required to measure the offset channel and you get wider dynamic range for the measurement Meas Type Allows you to access the menu to select one of the measurement reference types Total Pwr Ref Select this to set the total carrier power to the measurement reference level and the measured data is shown in dBc and dBm PSD Ref Select this to set the mean power spectral density of the carrier to the measurement reference level and the measured data is shown in dB and dBm Hz Fast ACP Allows you to increase the speed of the measurement A time domain computation method is used rather than an FFT transformation When this faster measurement method is selected repeatability is slightly reduced Spectrum Trace Turns off the spectrum trace data calculations This is only applicable when using the Spectrum View It speeds up the display of the other measured data values by not calculating the spectrum trace Limit Test Turns off the limit test function Changing the View The View Trace key accesses the menu to select either Bar Graph or Spectrum for the measurement
93. e measurement personalities but the menu for the mode you have selected does not appear on the softkeys Solution If you were already in the mode that you selected you must press the MEASURE key to display the available measurements Instrument Power On Problem Symptom The instrument will not power on The instrument is plugged in but the green LED above the front panel power switch is not on The yellow standby LED may be flashing or may be extinguished Something appears to be causing the instrument power supply to shut down Solution An external device or internal assembly is causing the instrument to shut down or the power supply may be in thermal shutdown Inspect the instrument to ensure that it is receiving adequate air flow Disconnect all devices from the rear panel and remove anything connected to the front panel probe power jack If after powering the instrument off the instrument powers on determine which device caused the problem LAN Communication Problem Symptom You cannot communicate with the instrument over the LAN Solution Make sure the correct IP address subnet mask and host name are stored in the instrument Press System Config I O then read the IP address subnet mask and host name which are shown on the corresponding softkey labels The default subnet mask of 255 255 0 0 should be sufficient for most closed network applications If the Restore Sys Defaults key has been used recently the IP address
94. e most appropriate for current instrument settings is selected automatically T Short 16 bit Select this to pack data every 16 bits Q Medium 24 bit Select this to pack data every 24 bits 1 Long 32 bit Select this to pack data every 32 bits ADC Dither Allows you to toggle the ADC dither function between Auto On and Off When set to Auto the default the ADC dither function will be activated when a narrow bandwidth is being measured and deactivated when a wide bandwidth is being measured ADC dither refers to the introduction of noise to the digitized steps of the analog to digital converter the result is an improvement in amplitude accuracy Use of the ADC dither however reduces dynamic range by approximately 3 dB Decimation Allows you to toggle the decimation function between Auto and Man and to set the decimation value Auto is the preferred setting and the only setting that guarantees alias free FFT spectrum measurements If you are familiar with the decimation feature you can change the decimation value by setting to Man but be aware that aliasing can result in higher values Decimation numbers 1 to 4 describe the factor by which the number of points are reduced The default setting is 1 which results in no data point reduction IF Flatness Allows you to toggle the IF flatness function between On and Off If set to On the default the IF flatness feature causes background amplitude corrections
95. ear key Synchronizes the measurement to an external sync source such as a frame clock signal Selecting the Frequency Channel Use the FREQUENCY Channel front panel key to set the center frequency or select the channel for the measurement you want to make 86 Chapter3 Making Measurements This chapter describes measurements that are available in the Basic and Service modes Basic mode measurements are common to many modulation formats Service mode measurements are used to check the functionality of the instrument 87 Making Measurements Basic Measurements Basic Measurements Basic measurements are useful for making measurements that are not specified in measurement standards and will be useful if you need to troubleshoot a measurement operation In addition having spectrum and waveform measurements available independently of personality modes provides extra flexibility To access the Basic mode press the Mode key and select the Basic softkey The following measurements are then available by pressing the Measure key Making the Spectrum Frequency Domain Measurement on page 97 Making the Waveform Time Domain Measurement on page 110 Making the Adjacent Channel Power ACP Measurement on page 122 Making the Channel Power Measurement on page 131 Making the Power Stat CCDF Measurement on page 136 When you press the key to select the measurement it will become the active me
96. ection to an instrument HP C29324 9 pin m to 9 pin f cable for RS 232 connection The modem cable required is HP 24542M 9 pin f to 25 pin m and the PC cable is HP 24542U N2714A Calibration and Adjustment Software This software automates all the tests needed to verify instrument performance make adjustments and troubleshoot The software runs on a PC platform using Windows 95 98 or NT 4 0 and uses the Agilent Test Management Environment to help minimize calibration run time and operator involvement 192 Chapter 6 Index Numerics 50 MHz Amptd key 144 50 MHz Ref key 83 A AC probe 191 Accessories 191 accessories AC probe 191 broadband preamplifiers 191 cal and adj software 192 GPIB cable 191 parallel cable 191 parallel interface cable 191 printer 191 printers 191 RS 232 cable 192 ACPR measurement reference type 128 view trace selection 128 active function area 33 active license key 38 how to locate 38 ADC calibration 174 ADC Dither key spectrum measurement 102 ADC Range key spectrum measurement 101 ADC ranging function automatic control 114 automatic peak control 114 automatic peak lock 114 manual control 114 address settings 69 adjustment 77 adjustment keys 73 adjustment software 192 Advanced menu spectrum 100 waveform 114 advanced menu ADC dither 115 ADC ranging function 114 decimation 115 number of data points 134 pre ADC bandpass filt
97. eform measurements is Time the FREQUENCY Channel front panel key has no active menu for baseband I Q Waveform measurements Use Span to change horizontal scale A Linear Envelope waveform view is also available to display baseband signals that employs linear voltage units on the vertical axis Waveform Signal Envelope Views of I Only or Q Only The I and Q Waveform of an I Q signal is very different from the complex signal displayed in the Waveform Signal Envelope view That is because the Signal Envelope is a product of both the I and Q modulation waveforms However an I and Q Waveform measurement of an I only or Q only signal with I only or Q only selected as the active input port is exactly the same signal displayed in the Waveform Signal Envelope view That is because an I only or Q only waveform determines the I only or Q only signal envelope Thus the Waveform Signal Envelope view can be used to measure an I only or Q only waveform directly 166 Chapter 4 Making Measurements Using Baseband I Q Inputs Option B7C Comparing RF and Baseband I Q Measurement Views The following table compares the measurement views for RF inputs and baseband I Q inputs Table 4 10 RF vs Baseband I Q Input Measurement Views by Measurement Views Available Views Available Mods to RF View Measurement for Measurements Using for Measurements Using for Baseband I Q RF Input Baseband I Q Inputs Inputs Channel Power Channel
98. elect to view the baseband alignment signal This is available as a diagnostic function to check the operation of the alignment signal in the case of alignment failure Because the alignment signal is input at the IF frequency it is displayed on any Spectrum Freq Domain window The INPUT Input Port menu is also available under the Mode Setup front panel key 160 Chapter 4 Table 4 8 Making Measurements Using Baseband I Q Inputs Option B7C Setting Up Baseband I Q Inputs Option B7C adds two keys that let you adjust the I Q inputs the I Q Setup key and the I Q Range key Both keys are located under the Input Output front panel key in the Input menu The Q Range key lets you select one of four levels as an upper limit for the signal being applied to the Baseband I Q inputs The level may be selected in units of dBm dBmv dBuv Volts and Watts The following table shows the four level selections available for each unit of measure The default is 1 Volt The Q Range power levels in Table 4 8 are based on an Q Input Z of 50 Q 1 Q Range voltage levels are independent of Q Input Z 1Q Range Settings by Displayed Unit of Measure Unit of Highest Lowest Measure Setting Setting dBm 13 0 dBm 7 0 dBm 1 0 dBm 5 1 dBm dBmv 60 dBmv 54 dBmv 48 dBmv 41 9 dBmv dBuv 120 0 dBuv 114 0 dBuv 108 dBuv 101 9 dBuv Volts 1 Volt 500 mV 250 mV 125 mV Watts 20 0 mW 5 0 mW 1 2 mW 310 0 uW If Q
99. ency of operation and power supply requirements The Transmitter Tester provides one three wire probe power connector on the front panel Typically it can energize one probe If you plan on operating more than one probe make sure you provide sufficient external power sources as required 158 Chapter 4 Making Measurements Using Baseband I Q Inputs Option B7C Selecting Baseband I Q Inputs Baseband I Q measurements may be made with unbalanced inputs using either two connectors I and Q or with balanced inputs using four connectors I Q I and Q A variety of high and low input impedances can be selected This flexibility allows measurements to be made at a maximum number of diagnostic locations in the transmitter circuitry To use the Baseband I Q inputs the instrument must be in BasicMode or another compatible mode which can utilize the Baseband I Q input ports For modes that support Baseband I Q the inputs and measurement defaults are activated and visible when either only Q only or I Q is selected for Input Portin the Input menu For modes which cannot support Baseband I Q the inputs and defaults are absent Selecting Baseband I Q Input Connectors Option B7C adds a softkey menu that lets you select I Q inputs This menu is located under the nput Output front panel key in the Input menu To select an input connector press nput Output Input Port Select the desired input connector s from the fol
100. entries are displayed in the active function area Level 1 Level 2 Level 3 Example ABCDEFG abcdefg 05 V HIJKLMN hijkimn _ 2 Ww OPQRSTU opqrstu lt gt X VWXYZ VWXYZ IAG O Y Done Done H amp Z Space Space Space More 1 of 3 More 2 of 3 More 3 of 3 1 Pressing a key that requires you to enter a string gives you access to the alpha editor Choose Option License Key and Host Name are some of those keys When one of these keys is pressed you will see the menu which is shown in level 1 of the table above 2 To enter an upper case letter press the key which contains the letter you wish to select In the example table above pressing VWXYZ lets you select the key labelled upper case Y The Y will then appear in the active function area Press More 1 of 3 to access the lower case letters and More 2 of 3 to access mathematical symbols and punctuation marks 3 To enter a digit 0 through 9 use the numeric keypad 4 To enter a space press the Space key which is available on both the letters and the symbols Alpha Editor menus 5 Press the Return front panel key to return to the previous menu without entering characters 6 If you need to correct a character you have entered you can use the backspace key to move the cursor in the active function area to the character you need to correct 7 Once you have completed entering all characters press the Done key 8 Pr
101. ents are available for use with the baseband 1 0 inputs e Channel Power e Power Stat CCDF e Spectrum Frequency Domain e Waveform Time Domain The following measurement is not available for use with Option B7C Baseband I Q Inputs e ACP 154 Chapter 4 Making Measurements Using Baseband I Q Inputs Option B7C Baseband I Q Measurement Overview To make measurements using Baseband I Q Inputs you must make the following selections Select a measurement that supports baseband I Q inputs For details see Making Measurements with Baseband I Q Inputs on page 154 for details Select the appropriate circuit location and probe s for measurements For details see Selecting Input Probes for Baseband Measurements on page 156 Select baseband I Q input connectors For details see Selecting Baseband I Q Input Connectors on page 159 Adjust I Q Setup if desired For details see Setting Up Baseband I Q Inputs on page 161 Select baseband I Q input impedance For details see Selecting Baseband I Q Input Impedance on page 164 Select a Baseband I Q measurement results view For details see Baseband I Q Measurement Views on page 165 Chapter 4 155 Making Measurements Using Baseband I Q Inputs Option B7C Selecting Input Probes for Baseband Measurements The selection of baseband measurement probe s and measurement method is primarily dependent on the location of the measurement point in t
102. equency between 1 and 30 MHz if the entered value does not correspond to the external reference that is in use a red Ext Ref annunciator will appear Be aware that the value entered for the external reference frequency will persist even after the instrument has been powered off The user must manually enter a new value for the external reference if a different value is required even if it corresponds with the default value An Ext Ref annunciator will appear only if the external reference has been activated by the user 10 11 12 13 14 15 16 17 18 19 Chapter 1 Getting Started Display Annotation ESec even second clock The green ESec annunciator indicates that the external even second clock has been selected as the sync type and a sync signal is present at the even second input rear panel Trigger In and the measurement is using it as the demodulation sync type The red ESec annunciator indicates that an external even second clock has been selected as the sync type but a sync signal is not present at the even second input rear panel Trigger In In this case the error message Even Second Clock Missing will appear in the Status Info bar at the bottom of the display The even second clock detection is updated every 2 seconds Klock keyboard lock The keyboard can be locked remotely using SYSTem KLOck The Klock annunciator will appear in white text when the keyboard has been locked System Bar T
103. er Waveform Time Domain Channel Power Power Spectral Density 9 89 dBm 1 23000 MHz 70 79 dBm Hz 168 Chapter 4 Figure 4 18 Making Measurements Using Baseband I Q Inputs Option B7C Spectrum Frequency Domain Measurement There are two new views with Baseband I Q input Spectrum measurements the Spectrum view with 0 Hz center frequency and the Spectrum Linear view with 0 Hz center frequency and the vertical scale in Volts If you have only or Q Only selected as the Input Port a Spectrum view does not have 0 Hz as the center frequency It is displayed with 0 Hz at the left margin similar to a conventional spectrum display except that the start frequency remains 0 Hz regardless of Span and the center frequency is displayed as half the Span Basic Mode Spectrum View Baseband I Q Inputs e Agilent 08 01 01 16 05 55 Basic _ View Trace AAA A a A A A Baseband 1 0 Spectrum Spectrum Freq Domain i Spectrum 1 0 Waveform AAAG at Capture Time 18 73 ps Chapter 4 169 Making Measurements Using Baseband I Q Inputs Option B7C Figure 4 19 Basic Mode Spectrum Linear View Baseband I Q Inputs s Agilent 08 01 01 16 46 59 Basic R View Trace Baseband 1 0 Spectrum Spectrum Freq Domain i E En Y Ref 40 0 mV ef 40 0 mY Linear Spectrum 1 0 Polar Trig Free CF 8 8 Hz Figure 4 20 Basic Mode Spectrum I Only View Baseband I Q Inputs 3 Agilent 08 02 01 12 06 19 Basic J
104. er 114 resolution bandwidth 134 resolution bandwidth filter 114 sweep time 134 trigger source 134 Align 50 MHz Reference key 78 Align ADC key 78 Align All Now key 77 Align Current IF Flatness key 78 Align Current Sysgain key 78 Align IF key 78 Align RF key 78 Align Subsystems key 78 alignment commands 174 alignment keys 73 Alignments key 77 Alpha Editor key 68 amplifiers 191 amplitude Y scale reference position 135 reference value 135 scale coupling 135 scale per division 135 annunciator bar 35 application modes available 74 application notes 17 Auto Align key 77 Auto Trig key trigger menu 85 averaging transmit band spurs 176 178 Averaging menu Avg Mode key 91 Avg Number key 91 Avg Type key 91 B Band Pwr key 96 Baseband I Q inputs key access table 172 key entries 172 key path 172 Baseband IQ measurements 154 Basic key 88 basic mode selecting 82 broadband preamplifiers 191 bus configuration keys 69 C cable GPIB 191 parallel interface 191 RS 232 192 cables RS 232 41 cal and adj software 192 calibration 77 ADC 174 calibration commands 174 calibration keys 73 calibration software 192 channel selecting the 86 channel power 131 advanced menu 131 134 amplitude Y scale scale div 135 changing display 135 channel bandwidth 131 channel power span 134 integration bandwidth 133 power spectral density 131 time record length 131 Choose O
105. er to read the time position and amplitude of the marker on the RF envelope trace Marker position is controlled by the RPG knob Delta Allows you to read the differences in time positions and amplitudes between the selected marker and the next Function Off Allows you to define the selected marker function to be Band Power Noise or Off The default is Off If set to Band Power you need to select Delta Trace Signal Envelope Allows you to place the selected marker on Signal Envelope 1 Q Waveform Off Allows you to turn off the selected marker Shape Diamond Allows you to access the menu to define the selected marker shape to be Diamona Line Square or Cross The default shape is Diamond Marker All Off Allows you to turn off all of the markers The front panel Search key performs a peak search when pressed A marker will automatically be activated at the highest peak 120 Chapter 4 NOTE Making Measurements Making the Waveform Time Domain Measurement In the Waveform measurement the Mean Pwr Entire Trace value plus the Pk to Mean value will sum to equal the current Max Pt value as shown in the data window below the RF Envelope display If you do a marker peak search Search with averaging turned off the marker will find the same maximum point However if you turn averaging on the Pk to Mean value will use the highest peak found for any acquisition during averaging while the marker peak will look
106. erenced to the total power Spectrum PSD Ref A spectrum display referenced to the mean power spectral density of the carrier in dBm Hz You can improve the update speed of the displayed data values by turning off the spectrum trace in Meas Setup Chapter 4 129 Making Measurements Making the Adjacent Channel Power ACP Measurement Troubleshooting Hints This adjacent channel power ratio measurement can reveal degraded or defective parts in the transmitter section of the UUT The following examples are those areas to be checked further e Some faults in the DC power supply control of the transmitter power amplifier RF power controller of the pre power amplifier stage or I Q control of the baseband stage e Some degradation in the gain and output power level of the amplifier due to the degraded gain control and or increased distortion e Some degradation of the amplifier linearity and other performance characteristics Power amplifiers are one of the final stage elements of a base or mobile transmitter and are a critical part of meeting the important power and spectral efficiency specifications Since ACP measures the spectral response of the amplifier to a complex wideband signal it is a key measurement linking amplifier linearity and other performance characteristics to the stringent system specifications 130 Chapter 4 Making Measurements Making the Channel Power Measurement Making the Channel Power Measurement Pu
107. ers to either side of a band so you can measure the power within that band You can use the RPG knob to move the band markers the numerical power reading will be visible in the upper right corner of the display This feature is particularly useful for measuring channel power e Noise Normalizes the equivalent amplitude of the measured noise to a 1 Hz bandwidth which is centered around the displayed marker This is done by sampling and displaying the average of 32 data points Search Marker The front panel Search key performs a peak search when pressed A marker will automatically be activated at the highest peak 96 Chapter 4 NOTE Making Measurements Making the Spectrum Frequency Domain Measurement Making the Spectrum Frequency Domain Measurement Purpose The spectrum measurement provides spectrum analysis capability for the instrument The control of the measurement was designed to be familiar to those who are accustomed to using swept spectrum analyzers This measurement is FFT Fast Fourier Transform based The FFT specific parameters are located in the Advanced menu Also available under basic mode spectrum measurements is an 1 Q window which shows the I and Q signal waveforms in parameters of voltage versus time The advantage of having an I Q view available while in the spectrum measurement is that it allows you to view complex components of the same signal without changing settings or measurements Me
108. essing the ESC key at any time prior to pressing the Done key will clear the new entry and leave the previous entry unchanged 68 Chapter 2 Using System Features Using Input Output Configuration Keys Using Input Output Configuration Keys There are several keys available to help configure the instrument front panel and rear panel inputs outputs These include the various buses external reference and other types of I O Configuring I O Press System Config I O to access keys and menus that enable you to identify and change the current GPIB address to identify and change various LAN settings Front Panel Key Level 1 Level 2 Level 3 Entry System Config O GPIB Address IP Address Host Name Alpha Editor Subnet Mask SCPI LAN Telnet Port Socket Port SICL Server Server Maximum Connections Instrument Name Instrument Logical Unit Emulated GPIB Name Emulated GPIB Logical Unit Emulated GPIB Address Ethernet Addr e GPIB Address Shows the current GPIB address 18 is the default setting and allows you to change this value The new value is displayed in the active function area The GPIB port is always active Chapter 2 69 Using System Features Using Input Output Configuration Keys 70 IP Address Changes the IP internet protocol address domain name and node host name for the instrument The IP address of the instrument can be changed by entering a
109. f Value values Scale Coupling must be Off Chapter 4 105 Making Measurements Making the Spectrum Frequency Domain Measurement Changing the I or Q Waveform Window If the I or Q Waveform window is active in the and Q Waveform view the SPAN X Scale and AMPLITUDE Y Scale keys access the menu to modify the following parameters e With the SPAN X Scale key Scale Div Allows you to set the horizontal scale by changing a time value per division The range is 1 00 ns to 1 00 s per division The default setting is 18 8 ms per division However since the Scale Coupling default is On this value is automatically determined by the measurement results To manually set this value Scale Coupling must be Off Ref Value Allows you to set the reference value ranging from 1 00 to 10 0 s The default setting is 0 00 s However since the Scale Coupling default is On this value is automatically determined by the measurement results To manually set this value Scale Coupling must be Off Ref Position Allows you to set the reference position to either Left Ctr center or Right The default setting is Left Scale Coupling Allows you to toggle the scale coupling function between On and Off The default setting is On Upon pressing the Restart front panel key or Restart softkey under the Meas Control menu this function automatically determines the scale per division and reference values based on the measurement results
110. form window will appear when you activate a spectrum measurement Use the Next Window key to select a window and the Zoom key to enlarge a window Spectrum Measurement Spectrum and I Q Waveform View E Agilent 06 27 01 18 40 10 Basic _ View Trace ee A Ch Freq 1 00000 GHz Spectrum Spectrum Freq Domain Spectrum 1 0 Polar 170 Waveform PreFFT BH 10 0000 MHz Flat Capture Time 98 Chapter 4 Table 4 1 Making Measurements Making the Spectrum Frequency Domain Measurement Changing the Measurement Setup The following table shows the factory default settings for spectrum frequency domain measurements Spectrum Frequency Domain Measurement Defaults Measurement Parameter Factory Default Condition View Trace Trace Display Res BW Averaging Avg Number Avg Mode Avg Type Trig Source Spectrum View Spectrum All 20 0000 kHz Auto 25 On Exp Log Pwr Avg Video Free Run Immediate SPAN 1 00000 MHz AMPLITUDE Y Scale Scale Div 10 00 dB Spectrum Linear View SPAN 1 00000 MHz AMPLITUDE Y Scale Scale Div 100 0 mV I and Q Waveform View Capture Time 188 00 us AMPLITUDE Y Scale Scale Div 100 0 mV 1 Q Polar View T Q Scale Div 100 0 mV T or Q Origin 0 00 V Advanced Pre ADC BPF On Pre FFT Filter Flat Pre FFT BW FFT Window FFT Size Length Control Min Points RBW Window Length FFT Length ADC Range Data Packing ADC Dither 1 55000 MHz Auto
111. g spectrum measurements you can activate Spectrum Spectrum Avg and I Q Waveform keys The spectrum average trace feature places a marker on the average trace in the spectrum window Markers Up to four markers can appear on the display simultaneously but only one marker can be activated and moved at a time This marker is called the active marker Press Markerto access the keys below except for the Shape and Marker All Offkeys which require you to press Marker More 1 of 2 e Normal Activates a single marker on the selected trace as set by the trace key in units either of frequency or time depending on the measurement mode that is currently active However if a marker has previously been activated that marker will persist as the default marker until it is changed You can change the position of the marker through use of the front panel step keys and RPG knob Annotation in the active function area and the upper right hand corner of the display indicate the value of the active marker in units of the window which contains that marker Pressing Normal also deactivates any marker delta functions which have been activated previously Chapter 4 95 Making Measurements Preparing for Measurements e Select Enables you to select one or more of the four available markers Once selected a marker can be activated or deactivated by using the Normal Delta or Function keys If a marker has previously been turned on and assigned
112. gnments Voltage Avg Meas Setup Average Avg Type Waveform MODE Basic Time Domain Waveform MODE SService Time Domain WindowLength Meas Setup More 1 of 2 Advanced FFT Size Note This feature is used when measurement is set to spectrum WMF Print Setup Print To File File Type Zoom Front Panel 62 Chapter2 Using System Features Using Print and Print Setup Functions Using Print and Print Setup Functions Keys in the Print Setup menus enable you to print displayed screen images to a variety of printers as a file in a variety of formats to the C drive flash memory or to the built in floppy disk drive The Print key is used to execute choices made in the Print Setup menus Printing a Displayed Screen 1 Connect a compatible printer via the parallel port on the rear panel 2 Press Print Setup then toggle the Print To key to select Printer 3 Press Printer Type then select Custom 4 Press Define Custom then select a Language either PCL3 or PCL5 In general modern laser printers use PCL5 while inkjet printers use PCL3 5 Select Color Printer Yes No depending on the capability of the printer 6 If your printer uses PCL5 you can select Orientation then Portrait or Landscape as appropriate The orientation feature is unavailable with PCL3 printers which always default to portrait orientation 7 Toggle Color Print On Offto enable or disable color printing once the Color Printer key see above is set
113. gramming Commands 4 4s600000 00 000 s cae eau nei aaveaee oneness 174 5 If You Have a Problem Problem Symptoms and Solutions ci ccacusaan rara rd ARA AAA e 180 Key or Feature Does Not Appear in Menu 0 0 ccc eee nas 180 Frequency Unlock or External Reference Missing Error Messages 181 LAN External Loopback Test Failed Error Message 00 c cece eee eee 181 Instrument Fails Alignment Error Message 0000 cece cen eee ene ens 181 Measurement Keys Do Not Appear after Pressing the Mode Key 182 Instrument Power On Problem 0 cece cece Ek a ERREA 182 LAN Communication Problem cicscccacddnese rras Ero Esn AAA 182 Instrument Keyboard is Locked opis adds pees ook dS BV Rees ee RESET oe oe 182 Agilent Technologies Test and Measurement Support Services and Assistance 183 Returning Your Instrument to Agilent Technologies ooooooooooom oo 184 6 Options and Accessories Options and Measurement Personalities nnana ccc eee ene eens 186 Option BAH GSM Measurement Personality 0 000 ccc ee eens 186 Option BAC cdmaOne Measurement Personality oooooooooooommoooo 186 Option BAE NADC PDC Measurement Personalities oooooooooo ooo 186 Option HN1 iDEN Measurement Personality 00 0 ccc 187 Option BAF W CDMA Measurement Personality oooooooooooomm oo 187 Opti
114. he Hamming filter Gaussian Press this key to activate the Gaussian filter with the roll off factor alpha of 3 5 Blackman Press this key to activate the Hamming filter Blackman Harris Press this key to activate the Hamming filter K B 70dB 904B 110dB Kaiser Bessel Select one of the Kaiser Bessel filters with sidelobes at 70 90 or 110 dBc FFT Size Allows you to access the menu to change the following parameters a m Length Ctrl Allows you to toggle the FFT and window length setting function between Auto and Man manual Min Pts in RBW Allows you to set the minimum number of data points that will be used inside the resolution bandwidth The range is 0 10 to 100 00 points with 0 01 resolution This key is grayed out if Length Ctrlis set to Man Window Length Allows you to enter the FFT window length in the number of capture samples ranging from 8 to 1048576 This length represents the actual quantity of I Q samples that are captured for processing by the FFT Capture Time is the associated parameter shown on the screen This key is grayed out if Length Controlis set to Auto FFT Length Allows you to enter the FFT length in the number of captured samples ranging from 8 to 1048576 The FFT length setting is automatically limited so that it is equal to or greater than the FFT window length setting Any amount greater than the window length is implemented by zero padding This key is g
115. he circuit The probe must sample voltages without imposing an inappropriate load on the circuit The following four measurement methods may be used with baseband I Q inputs 50 Q Unbalanced This is the measurement method of choice if single ended or unbalanced baseband I and or Q signals are available in 50 Q coaxial transmission lines and are terminated in a coaxial connectors Adapters necessary to convert to a 50 Q BNC male connector must be of 50 Q impedance The methods are as follows I only measurement using one single ended probe connected to the I input connector Q only measurement using one single ended probe connected to the Q input connector I Q measurement using two single ended probes connected to the I and Q input connectors 600 Q Balanced This is the measurement method of choice if balanced baseband signals having a 600 Q impedance are available The methods are as follows I only measurement using one differential probe or two single ended probes connected to the I and I inputs Q only measurement using one differential probe or two single ended probes connected to the Q and Q inputs I Q measurement using two differential probes or four single ended probes connected to the I Q I and Q input connectors 156 Chapter 4 Making Measurements Using Baseband I Q Inputs Option B7C 1 MQ Unbalanced High input impedance is the measurement method of choice if single ended or unbalanced
116. he instrument data acquisition memory Decimation numbers 1 to 4 describe the factor by which the number of points are reduced The default setting is 1 which results in no data point reduction Chapter 4 115 Figure 4 7 Making Measurements Making the Waveform Time Domain Measurement Changing the View The View Trace key allows you to access the selection menu for the desired measurement view You can use the Next Window key to move between the multiple windows if any and make it full size by Zoom e Signal Envelope Provides a combination view of the waveform graph in parameters of power versus time with the semi log graticules and the measurement results for Mean Pwr Entire Trace Pk to Mean Current Data for Max Pt and Min Pt are shown in the text window Changes to sweep time or resolution bandwidth will sometimes affect data acquisition Waveform Measurement Signal Envelope View Agilent 08 20 01 10 24 29 Basic Viem Trace Ch Freq 1 00000 GHz me nvelope Waveform Time Domain A E Signal Envelope 1 0 Haveform 00 kHz Gaussian Mean Pwr Entire Trace Current Data 30 43 dBm Pk to Mean 9 27 dB Max Pt 21 16 dBm Meas Setup View Trace Signal Envelope Others Factory default settings Input signal in this example cdma2000 Rev 8 SR1 9 Channel 116 Chapter4 Making Measurements Making the Waveform Time Domain Measurement 1 Q Waveform Provides a view of the I Q waveform
117. he original factory packaging materials if they are available If not use similar packaging to properly protect the instrument Return the instrument to the nearest Agilent Technologies sales and service office Contact the nearest office as shown in Table 5 1 on page 184 to determine the address to which the instrument should be sent 184 Chapter5 Options and Accessories This chapter contains descriptions of the options and accessories that are available for use with your instrument 185 Options and Accessories Options and Measurement Personalities Options and Measurement Personalities Option BAH GSM Measurement Personality Provides GSM transmitter measurements power vs time phase and frequency error output RF spectrum transmit band spurs And general transmitter measurements transmit power spectrum frequency domain waveform time domain It includes the GSM Guide which contains measurement and programming information Option BAC cdmaOne Measurement Personality Provides IS 95 transmitter measurements channel power modulation accuracy rho code domain power ACPR spur close And general transmitter measurements spectrum frequency domain waveform time domain Includes cdmaOne Guide which contains measurement and programming information Option BAE NADC PDC Measurement Personalities Provides NADC transmitter measurements ACP error vector magnitude Provides PDC tr
118. he value you entered must correspond to the external reference that is in use or it will generate the error Note that the value entered for the external reference frequency will persist even after the instrument has been powered off and then on A green Ext Ref message indicates that the instrument is using an external reference and it is properly locked Solution 2 If you want to use the internal reference signal toggle the Freq Ref key to the Int internal setting LAN External Loopback Test Failed Error Message Symptom During booting the instrument you see a message which reads LAN external loopback test failed Solution This message indicates that no LAN cable is connected to the instrument You can ignore this message if you don t want to use the LAN Instrument Fails Alignment Error Message Symptom An error message indicates that the instrument has failed alignment This message appears either at power on during the self alignment or when the Align All Now key is pressed Solution These alignments will fail if an external 50 MHz signal at a power level greater than 0 dB is connected to the RF input of the transmitter tester Remove the 50 MHz signal to fix this problem Chapter 5 181 If You Have a Problem Problem Symptoms and Solutions Measurement Keys Do Not Appear after Pressing the Mode Key Symptom After pressing the MODE key you have selected a particular mode like Basic Service or one of th
119. ime and Date Personality Mode Indicator Graph Window Title Averaging Indicator Remote Status Indicator The remote status indicator contains four letters R L T and S The current status is indicated by the letters that are highlighted R indicates that the instrument is in remote mode L indicates a listen state T indicates a talk state S indicates a service request Pass Fail Status Indicator Menu Title Softkeys A softkey that is currently active is highlighted Greyed out softkeys are unavailable and may require a password for use Span annotation Status Info Bar The current error message which has the highest priority will appear in the Status Info Bar A programmer can also send a message to the Status Info bar using a SCPI command 35 Getting Started Installing Optional Measurement Personalities Installing Optional Measurement Personalities When you install a measurement personality follow this process 1 Install the measurement personality firmware into the instrument See the supplied installation instructions 2 Enter a license key number that enables the measurement personality Refer to the License Key Numbers section below Adding additional measurement personalities requires purchasing a retrofit kit for the desired option The retrofit kit contains the measurement personality firmware A license key certificate is also included i
120. implemented This feature will 28 Chapter 1 18 On Off 19 Inputs Chapter 1 Getting Started Front Panel Description be implemented with a future firmware update switch turns on the transmitter tester A green LED will light below the Power switch when the instrument has been turned on When in standby mode a yellow LED is visible above the On Off switch enable you to input one or more of the two following external signals e input and Q inputs There are two I and two Q inputs I and I not Q and Q not These connectors are present if the BbIQ measurement personality Option B7C is installed in your instrument e External Trigger input The external trigger allows external triggering of measurements The external trigger accepts an external trigger signal between 5 and 5 V and has a nominal impedance of gt 10 kQ For more information on triggering see page 85 29 Getting Started Rear Panel Description Rear Panel Description The diagram below illustrates all rear panel connections For further explanation of labels found on the rear panel see the section on safety considerations on page 49 1 2 a G rT ops O 3 O Tf 3 o ofo ye D0000 DADO SOD0OD C O 000000 AVEN C COOX yJ QU A U ON
121. in this window V Q Waveform window Select this window to view the I and Q signal characteristics of the current measurement in parameters of voltage and time This window is in both the spectrum and waveform measurements Press View Trace Spectrum to view a spectrum measurement window or View Trace Waveform to view a waveform measurement window e Trace Display All Displays both the current and the average trace Average Displays only the average trace The average trace is shown in blue Current Displays only the trace for the latest data acquisition The current trace is shown in yellow e Span X Scale Keys Span key This key allows you to modify the frequency span Changes in span may affect data acquisition Scale Div key This key allows you to modify the X scale parameter in units of time Sweep Time key This key allows you to modify sweep time Changes in sweep time will affect data acquisition Ref Value key This key allows you to set the value of the reference level for X scale display in units of time Ref Position key This key allows you to place the current Chapter 4 93 Making Measurements Preparing for Measurements reference level on the left the center or the right of the display This is used for X scale display either in units of frequency or time Scale Coupling key This key couples the scale division to the sweep time for measurements made in the time domain e Amplitude Y Sc
122. information see Figure 2 2 Under the Show System menu is a key that enables you to enter a password and four information only keys in a lighter font that show the serial number model designation firmware revision and host ID for your instrument Diagnostics features require a service password The password is only available if the service guide has been purchased All service diagnostic features are described in the service guide Front Panel Key Level 1 Level 2 System Show System Service Password Model Serial Number Firmware Rev Host ID Next Page Prev Page Diagnostics 74 Chapter2 Using System Features Using System Configuration and Alignment Keys The display lists all the measurement options modes available at the time the firmware was installed or upgraded It shows whether or not the code for each option is currently installed in memory It may not be possible to fit all the options into your available memory Hardware information includes the name of boards along with part serial number and revision information The display also indicates whether you have the license key installed that gives you access to a particular option mode It is possible to have the license key installed but not have the program code or to have the program code with no license key Either situation will prevent the option from running Show System Displays Figure 2 1 Firmware and Op
123. ion If VQ Input Zis set to 1 M O the setting for Q Z Ref for Input Z 1MQ key becomes effective For details refer to Selecting Baseband I Q Input Impedance on page 164 e 1 Q Z Ref for Input Z 1M Q This key is used to select the 1 M Q input reference Z value in Ohms This key is effective only when Q Input Zis set to a 1 M Q setting The default value is 50 0 Q The value range is 0 Q to 10 M Q with a tuning increment of 1 0 Q For more details refer to Selecting Baseband I Q Input Impedance on page 164 162 Chapter 4 Making Measurements Using Baseband I Q Inputs Option B7C Figure 4 14 Input Menu with Option B7C Baseband I Q Inputs Installed 3 Agilent 07 26 01 16 30 06 Basic Input Sa ee Baseband 1 0 Input Ee _Spectrum Freq Domain Spectrum Hz 1 0 Waveform PreFFT BH 3 1 MHz Capture Time 94 00 Figure 4 15 I Q Setup Menu Option B7C Baseband I Q Inputs Installed 3 Agilent 07 26 01 17 01 40 Basic 1 0 Setup A Baseband 1 0 Fa sad Spectrum Freq Domain 3 i I Spectrum 1 0 Input Z San unbalanced 1 Q Z Ref for Input Z 1M2 50 0 R Hz Span 2 0 1 0 Haveform PreFFT BH 3 10000 MHz Capture Time 94 00 ps Chapter 4 163 Figure 4 16 Making Measurements Using Baseband I Q Inputs Option B7C Selecting Baseband I Q Input Impedance The selection of input impedance is coupled to a connector balance configuration Balance refers to whether an input is singl
124. ion on the optional measurement personalities Specifications Includes specifications for the transmitter tester and all optional measurement personalities Special options will be documented elsewhere Programmer s Guide Does not include commands for the optional measurement personalities Documentation CD ROM Includes programming examples Does not include service documentation or software An E4406A standard instrument contains the Basic and Service modes which are described in the User s Guide If you have purchased an optional measurement personality your instrument comes loaded with the personality you have selected plus the Basic and Service modes You also receive the related guide containing measurement and programming information for the personality you have ordered Chapter 1 15 Getting Started What Documentation Comes with the E4406A VSA Series Transmitter Tester Table 1 2 Personality Documentation Measurement Option Part Description Option BAC cdmaOne Guide Option BAH GSM Guide Option 202 EDGE w GSM Guide Option BAE NADC PDC Guide Option BAF W CDMA Guide Option B78 cdma2000 Guide Service documentation is also available from Agilent Technologies NOTE Ifthe shipping container is damaged or any part is missing notify Agilent Technologies see page 184 for locations When transporting the instrument use the original or comparable packaging 16
125. istortion e Amplifier linearity Chapter 4 135 Making Measurements Making the Power Stat CCDF Measurement Making the Power Stat CCDF Measurement Purpose Many of the digitally modulated signals now look noise like in the time and frequency domain This means that statistical measurements of the signals can be a useful characterization Power Complementary Cumulative Distribution Function CCDF curves characterize the higher level power statistics of a digitally modulated signal The curves can be useful in determining design parameters for digital communications systems The power statistics CCDF measurement can be affected by many factors For example modulation filtering modulation format combining the multiple signals at different frequencies number of active codes and correlation between symbols on different codes with spread spectrum systems These factors are all related to modulation and signal parameters Factors like signal compression and expansion by non linear components group delay distortion from filtering and power control within the observation interval also affect the measurement Measurement Method The power measured in power statistics CCDF curves is actually instantaneous envelope power defined by the equation P 17 Q Z where I and Q are the quadrature voltage components of the waveform and Z is the characteristic impedance A CCDF curve is defined by how much time the waveform spends at
126. its programming instructions when properly installed on that instrument Agilent Technologies does not warrant that the operation of the instrument or software or firmware will be uninterrupted or error free LIMITATION OF WARRANTY The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer Buyer supplied software or interfacing unauthorized modification or misuse operation outside of the environmental specifications for the product or improper site preparation or maintenance NO OTHER WARRANTY IS EXPRESSED OR IMPLIED AGILENT TECHNOLOGIES SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE EXCLUSIVE REMEDIES THE REMEDIES PROVIDED HEREIN ARE BUYER S SOLE AND EXCLUSIVE REMEDIES AGILENT TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER BASED ON CONTRACT TORT OR ANY OTHER LEGAL THEORY Contents 1 Getting Started What Documentation Comes with the E4406A VSA Series Transmitter Tester 15 URL for the Latest VSA Transmitter Tester Update o ooooooooocooommm oo 17 Understanding Digital Communications MeasurementS oo ooocooocooornomo 17 Updating the Firmware comarca ARA AAA a 18 Making a Measurement sous iii ARAS 19 Front Panel Keys Context Dependency asnasan annann rra nar RARA AAA 20 Front Panel Describir sabt eroras
127. j 192 Span key 93 spectrum measurement 100 SPAN X Scale menu 93 spectrum all traces 107 amplitude Y scale 105 averaged trace 107 changing the display 105 changing views 103 current trace 107 I and Q waveform view 106 next window selection 103 span X scale 105 trace display 107 view trace 103 zoom a window 103 Spectrum Frequency Domain key 97 spectrum frequency domain measurement 177 spectrum linear view linear spectrum window 105 spectrum measurement making the measurement 97 method 97 results 98 spectrum measurement display 175 spectrum window 93 status keys 73 status info bar 35 Sweep Time key 93 114 Sync Source menu 86 system keys 52 T tab keys 28 telnet key 69 text how to enter 68 Time Corr key 79 time domain measurement 177 Timebase Frequency key 142 Trace Display key 93 transmit band spurs averaging state 176 178 Trig Holdout key trigger menu 85 Trigger key 85 trigger out 30 Trigger Source menu Ext Front key 92 Ext Rear key 92 Free Run key 92 Line key 92 RF Burst key 92 Video key 92 troubleshooting key 73 U Uninstall Now 39 uninstalling measurement personalities 36 Unlock error annunciator 34 updating firmware 38 URL firmware 17 transmitter tester updates 17 vV Video key 92 view trace I Q waveforms 104 linear spectrum and phase graphs 103 spectrum graph 103 View Trace key 93 view trace selection 1 Q polar graph view
128. l 178 repair returning your instrument 184 repeat averaging 91 Res BW key spectrum measurement 100 waveform measurement 114 Restore Align Defaults key 79 Restore Meas Defaults key 90 Restore Sys Defaults key 73 Return key 28 returning your instrument 184 Index 195 Index returning your instrument to Hewlett Packard 184 RF Burst key 92 RF Envelope key 93 RF input 27 RF input selection 178 RPG knob 27 RS 232 cable 192 RS 232 cables 41 RS 232 connector 32 S safety installing instrument 47 using instrument 48 safety symbols 48 sales and service offices 184 save features 67 Save State key 67 Scale Coupling key 93 Scale Div key 93 SCSI connection 31 Search key 96 selecting a mode 82 selecting a printer 63 Sensors key 146 Serial Number key 74 Service key 141 Service menu 50 MHz Amptd 141 Front Panel Keys 141 Power vs Time 141 Sensors 141 Spectrum 141 Timebase 141 Waveform 141 service mode selecting 82 service password 74 setting up the mode 83 Shape key 96 shipment verification list 15 Show Errors key 73 Show System key 74 SICL server keys 69 signal envelope view signal envelope window 119 signal envelope window 118 119 amplitude Y scale 119 reference position 119 reference value 119 scale coupling 119 scale per division 119 Slope key trigger menu 85 softkeys greyed out keys 24 highlighted keys 24 196 software cal and ad
129. lable Pwr Avg Averages the power which is equivalent to the rms of the voltage This is the default type of averaging Log Pwr Avg The log of the power is averaged This is also known as video averaging Voltage Avg The voltage is averaged Maximum The maximum values are retained Minimum The minimum values are retained Chapter 4 91 Making Measurements Preparing for Measurements Trigger Source Changing the Trig Source alters the trigger source for the current measurement only Not all of the selections are available for all measurements Note that the RF Burst Video Ext Front and Ext Rear menu keys found in the Trigger menu enable you to change settings to modify the delay level and slope for each of these trigger sources as described on page 85 Choose one of the following trigger sources e Free Run Triggers at the time the data is requested completely asynchronous to the RF or IF signals e Video Is an internal IF envelope trigger It triggers on an absolute threshold level of the signal passed by the IF e AF Burst Is an internal wideband RF burst trigger that has an automatic level control for burst signals e Ext Front Activates the front panel Ext Trigger Input The external trigger must be a signal between 5 and 5 volts e Ext Rear Activates the rear panel Trigger In The external trigger must be a signal between 5 and 5 volts e Frame Uses the internal frame clock to generate
130. late to the nature of the signal itself Many measurements which relate to the characteristics baseband I and Q signals have when mixed and upconverted to signals in the RF spectrum can be made as well However measurements which relate to the characteristics of an upconverted signal that lie beyond the bandwidth available to the Baseband I Q Input circuits can not be measured the limits are 5 MHz BW for individual I and Q signals and 10 MHz for composite I Q signals Some views are appropriate for use with both RF and Baseband I Q signals without any modification while other views must be altered Some examples of measurements with identical results views are QPSK EVM Code Domain and CCDF For Spectrum measurements identical views include the I and Q Waveform view and the I Q Polar view For Waveform measurements identical views include the I Q Waveform view the Signal Envelope view and the I Q Polar view At RF frequencies power measurements are conventionally displayed on a logarithmic vertical scale in dBm units whereas measurements of baseband signals using Baseband I Q inputs may be conveniently displayed as voltage using a linear vertical scale as well as a log scale Spectrum Views and 0 Hz Center Frequency Some views must be altered to account for the fundamental difference between RF and baseband I Q signals For Spectrum measurements of I Q signals this includes using a center frequency of 0 Hz for Spectrum views and th
131. lection menu 6 dB 0 dB 6 dB 12 dB 18 dB 24 dB to set the ADC range level Also note that manual ranging is best for CW signals Data Packing Allows you to select Auto the default or the Short 16 bit Medium 24 bit and Long 32 bit methods of data packing The short medium and long methods are not compatible with all settings and should not be used unless you are familiar with data packing methods Auto is the preferred choice 114 Chapter 4 Making Measurements Making the Waveform Time Domain Measurement 1 Auto The data packing value most appropriate for current instrument settings is selected automatically 1 Short 16 bit Select this to pack data every 16 bits Medium 24 bit Select this to pack data every 24 bits 1 Long 32 bit Select this to pack data every 32 bits ADC Dither Allows you to toggle the ADC dither function between On and Off The default setting is Off If set to On the ADC dither refers to the introduction of noise to the digitized steps of the analog to digital converter and results in better amplitude linearity and resolution in low level signals However it also results in reduced dynamic range by approximately 3 dB Decimation Allows you to toggle the decimation function between On and Off and to set the decimation value Decimation allows longer acquisition times for a given bandwidth by eliminating data points Long time captures can be limited by t
132. level when measuring the internal 50 MHz calibrator amplitude RF Amplitude The instrument s internal ADC level when measuring the external source amplitude Error The difference in ADC level between the 50 MHz internal calibrator amplitude and the source amplitude 6 Agilent 07 26 99 09 53 21 Service RICTT Measure a AAN Pwr ys Time Timebase Cal Magnitude Frequency 50 MHz Amptd Sensors a ea Nee Ada Spectrum Error ad A Freq Domain Waveform Time Domain More 1 of 2 Chapter 4 145 Making Measurements Sensors Sensors Purpose The temperature of the RF board will vary over time and can adversely affect the IF signal amplitude Sensors on the RF board monitor changes in temperature Measurement Method The sensor measurements are generated internally and do not require any user interaction Test Setup Press Mode Service Measure Sensors Results Window One IF Signal Level Shows a stripchart of the IF signal amplitude in dBm Window Two Cal Osc Level The Cal Oscillator window is not implemented Window Three RF Temperature Shows a stripchart of the RF assembly temperature in Celsius Window Four numeric results IF Signal Level The ADC number for the detected 21 4 MHz IF signal at the input to the AIF Typical values with the input attenuator set to 0 dB 20 no signal applied 23 10 dBm 27 5 dBm and 38 0 dBm Cal Osc Level Not implemented RF Temp Sh
133. lowing choices displayed e RF Press to select the 50 Q N RF connector e Q Select if using 2 connector unbalanced or 4 connector Balanced I Q cabling Complete your selection by choosing the appropriate input impedance and connectors in the section Selecting Baseband I Q Inputs on page 159 e I Only Select if using I and or I input connectors Complete your selection by choosing the appropriate input impedance and connectors in the section Selecting Baseband I Q Input Impedance on page 164 e Q Only Select if using Q and or Q input connectors Complete your selection by choosing the appropriate input impedance and connectors in the section Selecting Baseband I Q Input Impedance on page 164 e 50 MHz Ref Select to view the 50 MHz CW calibration signal signal level is approximately 25 0 dBm Chapter 4 159 Making Measurements Using Baseband I Q Inputs Option B7C e IF Align Select to view the IF alignment signal This signal is available as a diagnostic function to check the operation of the alignment signal in the case of alignment failure Once selected a menu accessing the IF alignment signal parameters is available at the bottom of the Input menu Either CW comb or pulse signals may be selected Because the alignment signal is input at the IF frequency it is displayed on any active Spectrum Freq Domain window regardless of center frequency e Baseband Align Signal ON OFF S
134. lues refer to Changing the Measurement Setup on page 138 Results The next figure shows an example result of Power Stat CCDF measurements in the graph window The average power and its probability are shown in the text window Power Statistics CCDF Measurement s Agilent 03 14 01 12 08 04 Basic Measure a a rn Base Ch Freq 1 00000 GHz Spectrum CCDF a 1 Freq Domain Waveform Time Domain Average Power 11 49 dBm Power Stat CCDF aE O 20 00 dB Chapter 4 137 Table 4 6 Making Measurements Making the Power Stat CCDF Measurement Changing the Measurement Setup The next table shows the factory default settings for power statistics CCDF measurements Power Statistics CCDF Measurement Defaults Measurement Parameter Factory Default Condition Meas Setup Meas BW Counts Meas Interval Trig Source Display Ref Trace Gaussian Line 5 00000 MHz 10 0000 Mpoints 1 000 ms Free Run Immediate Off On Make sure the Power Stat CCDF measurement is selected under the Measure menu Press the Meas Setup key to access the menu which allows you to modify the trigger source for this measurement as described in Measurement Setup on page 90 In addition the following parameters can be modified e Meas BW Allows you to set the measurement bandwidth according to the channel bandwidth The range is 10 000 kHz to 6 70000 MHz with 0 1 kHz resolution e
135. ments Using Baseband I Q Inputs Option B7C The following table lists currently available Agilent probes which are suitable for use under various measurement conditions Table 4 7 Agilent Probes Balanced and Unbalanced Probe Type Description Unbalanced 1144A 800 MHz Active Probe Single Ended 54701A 2 5 GHz Active Probe 1145A 750 MHz 2 Channel Active Probe P 85024A High Frequency Probe 41800A Active Probebf 10020A Resistive Divider Probe 54006A 6 GHz Passive Divider Probe Balanced 1141A 200 MHz Active Differential Probe Differential N1025A 1 GHz Active Differential Probe a Not compatible with 3 wire power interface Needs 1142A power supply For two channels you will need either two 1142A power supplies or one 1142A power supply and one 01144 61604 1 input two output adapter cable b Two probes needed to cover both I and Q inputs c Output connector is BNC d Not compatible with 3 wire power interface Requires use of 1143A power supply 1143A can power two 54701A probes e 85024A bandwidth is 300 kHz to 3 GHz Output connector is type N Power is 3 wire connector 15v 12 6v gnd f 41800A bandwidth is 5 Hz to 500 MHz Output connector is type N Power is 3 wire connector 15v 12 6v gnd g 54006A output connector is 3 5 mm h 3 5 mm output connector requires 15 volt supply Refer to the current Agilent data sheet for each probe for specific information regarding frequ
136. meters With the SPAN X Scale key Span Allows you to modify the frequency span The range is 10 000 Hz to 10 000 MHz with 1 Hz resolution depending on the Res BW setting Changing the span causes the resolution bandwidth to change automatically and will affect data acquisition time With the AMPLITUDE Y Scale key Scale Div Allows you to set the vertical scale by changing an amplitude value per division The range is 1 00 nV to 20 00 V per division The default setting is 100 0 mV However since the Scale Coupling default is On this value is automatically determined by the measurement results To manually set this value Scale Coupling must be Off Ref Value Allows you to set the reference value ranging from 250 00 to 250 00 V The default setting is 0 00 V However since the Scale Coupling default is On this value is automatically determined by the measurement results To manually set this value Scale Coupling must be Off Ref Position Allows you to set the reference position to either Top Ctr center or Bot bottom The default setting is Ctr Scale Coupling Allows you to toggle the scale coupling function between On and Off The default setting is On Upon pressing the Restart front panel key or Restart softkey under the Meas Control menu this function automatically determines the scale per division and reference values based on the measurement results To manually set either Scale Div or Re
137. modes Some features are intended for use only by service personnel and cannot be accessed without a password If after pressing a key a message appears requesting entry of a password this means that the feature is meant for service use only The password is only available through the service guide 82 Chapter3 NOTE Setting the Mode Mode Setup Mode Setup When you select a mode the instrument automatically presets settings to defaults for that mode These defaults apply to all measurements in the mode Mode settings are persistent When you switch from one mode to another mode the settings you have chosen for the modes will remain active until you change them This allows you to switch back and forth between modes without having to reset settings each time Presetting the instrument will return all current mode settings to their default values Powering the instrument off and on will reset all mode settings to their default values Before making measurements it is important to set the parameters under the mode setup key for the device to be tested These parameters are not saved when you preset or power the instrument off and on so you may want to save them in an instrument state for later use The Mode Setup key accesses 1 the Input key menu of features including selecting inputs changing input attenuation and modifying IF align settings and 2 the Trigger key menu which lets you to choose trigger setup states fo
138. n the error history queue and to clear the error queue Front Panel Key Level 1 Level 2 System Show Errors Top Page Last Page Next Page Prev Page Clear Error Queue s Verbose Chapter 2 73 NOTE Using System Features Using System Configuration and Alignment Keys e Clear Error Queue s The error history queue retains and displays all errors once they have been detected even if they are no longer detected after a period of time has elapsed After reviewing the error queue you will likely want to clear it before making another measurement Note that if an error condition exists continuously the error will not appear in the queue after the error history queue has been cleared e Verbose When an error is made in using the instruments programming commands the verbose feature displays the command in which an error has been detected An error indicator will appear in the diaplayed command line immediately following the entry that caused the error This feature can help you troubleshoot programming problems You can exit the error history queue display to return to a measurement display by pressing the ESC or the Return key Show System Press System More 1 of 3 Show System to access the two page show system display The first page shows firmware and option information see Figure 2 1 Press More 2 of 3 to access the second page which shows option and hardware status
139. n the kit It documents the license key number that is for your specific option and instrument serial number Installation instructions are included with the retrofit kit Available Personality Options The option designation consists of three characters as shown in the Option column of the table below Available Personality Options Option GSM measurement personality BAH EDGE with GSM measurement personality 202 cdmaOne measurement personality BAC NADC PDC measurement personalities BAE iDEN measurement personality HN1 W CDMA measurement personality BAF cdma2000 measurement personality B78 a Available as of the print date of this guide b For instruments that already have Option BAH licensed order E4406AU Option 252 to add EDGE with GSM 36 Chapter 1 Getting Started Installing Optional Measurement Personalities Loading the Optional Personality The installation instructions require you to know three pieces of information about your instrument the amount of memory available the Host ID and the instrument serial number Required Information Key Path Instrument System File System Memory This key is grayed out The total amount of memory in your instrument will be the sum of the Used memory and the Free memory Host ID System Show System Host ID It is shown on the display Instrument System Show System Serial Number Serial Number
140. nd Pwr key 96 Delta key 96 Function key 96 Noise key 96 Select key 96 Shape key 96 Max Total Pwr key 84 Meas Control key 90 Measure softkey 90 measurement channel power 133 power stat CCDF 137 display 139 spectrum display 107 measurement bar 34 measurement modes available 74 measurement personalities retrofit 190 measurement reference type spectral power density reference 128 total power reference 128 measurements basic 88 how to make 88 spectrum frequency domain 177 waveform time domain 177 menu map 20 Min Pts in RBW key 101 mode availability 74 basic 88 selecting 82 setup 83 Mouse Adapter typical 43 N N2714A cal and adj software 192 Navigation keys 28 Next Window key 28 Noise key 96 Normal key 95 O on off switch 29 Options 0B1 standard manual set 189 OBV service guide 190 OBW service guide and specifications 190 1CM rack mount kit 190 1CN handle kit 190 1CP rack mount and handle kit 190 1CR rack slide kit 190 202 EDGE with GSM 188 252 EDGE w GSM 189 B78 cdma 2000 187 189 BAC cdmaOne 186 BAE NADC PDO 186 BAF W CDMA 187 BAH GSM 186 189 HN1 iDEN 187 188 options available 74 outputs configuration 69 P parallel connector 32 parallel interface cable 191 pc cables for RS 232 41 personality selecting 82 phase window 118 119 power amplifiers 191 power stat CCDF combining the multiple signals
141. nel leakage power are mainly determined by the transmitter design particularly the low pass filter Measurement Method This ACP measurement analyzes the total power levels within the defined carrier bandwidth and at given frequency offsets on both sides of the carrier frequency This measurement requires the user to specify measurement bandwidths of the carrier channel and each of the offset frequency pairs up to 5 Each pair may be defined with unique measurement bandwidths It uses an integration bandwidth IBW method that performs a time domain data acquisition and applies FFT to get a frequency domain trace In this process the channel integration bandwidth is analyzed using the automatically defined resolution bandwidth RBW which is much narrower than the channel bandwidth The measurement computes an average power of the channel over a specified number of data acquisitions automatically compensating for resolution bandwidth and noise bandwidth If Total Pwr Refis selected as the measurement type the results are displayed as relative power in dBc and as absolute power in dBm If PSD Ref Power Spectral Density Reference is selected the results are displayed as relative power in dB and as absolute power in dBm Hz 122 Chapter 4 Making Measurements Making the Adjacent Channel Power ACP Measurement Recommended Offset Frequencies and Reference Bandwidths While the user sets the specific offsets and reference bandwidths th
142. ng Eject Page Reset Printer More 2 of 2 64 Chapter2 Using System Features Using Print and Print Setup Functions Printing a Screen Image to a File on A or C Drives 1 Press Print Setup Print To Toggle the Print To key to select File 2 Press the File Type key then select between gif bmp and wmf formats 3 To print a file to the floppy drive toggle the File Location key to A and insert a 3 5 HD floppy disc formatted for MS DOS into the front panel disk drive To print a file to the internal flash memory toggle the File Location key to C 4 Select the Image format to be stored on the disk Use Normal to store an image that is identical to the currently displayed image with a black background Use Invert which provides a a light background with a dark trace to minimize ink and toner consumption 5 Press HCOPy Dest then select Printer This enables you to generate up to six files containing screen images Note if HCOPy Destis set to FPanel only one file can be saved to memory or a floppy disk Any subsequent screen files will overwrite the file currently saved in the A or C drives For these reasons Printer is usually the preferred selection 6 Press the front panel PRINT key If you have set HCOPy to Printer six filenames will appear in the softkeys screen1 xxx screen2 xxx screen3 xxx screen4 xxx screen5 xxx and screen6 xxx the xxx extension will be gif bmp
143. numeric address composed of numbers and decimal points Host Name Displays the host name of the instrument Pressing the key activates the alpha editor which enables you to change the host name However this will not change your LAN system representation of the host name You must work through your local system administrator to change the host name Changing it in the instrument only changes the displayed information it will not enable LAN access with the new name Subnet Mask Changes the subnet mask of the instrument The subnet mask is a 32 bit address mask used in IP networks to indicate the bits of an IP address that are used for the subnet address The default address is 255 255 0 0 for a class B network SCPI LAN Accesses the following keys Telnet Port Turns on or off telnet programming over the LAN This key only affects new connections not existing connections Enter the port number that you will use for your telnet connection to the transmitter tester The default port number is 5023 Socket Port Turns on or off socket programming over the LAN This key only affects new connections not existing connections Enter the port number that you will use for your socket connection to the transmitter tester The default port number is 5025 SICL Server Accesses the following keys These keys are provided for information only The value of the settings cannot be changed Server Indicates the on off condition of
144. oints and FFT segments Num FFT Seg Allows you to select the number of FFT segments used in making the measurement of the reference channel carrier In automatic mode the measurement optimizes the number of FFT segments required for the shortest measurement time The minimum number of segments required to make a measurement is set by your desired measurement bandwidth Selecting more than the minimum number of segments will give you more dynamic range for making the measurement but the measurement will take longer to execute e Offset Limits Allows you to access the menu to change the following parameters for offset frequency settings and pass fail tests 126 Offset Allows you to select one of five offsets A through E Only one selection at a time A B C D or E is shown on this key label The remaining softkeys on the Offset Limits menu then apply to the selected offset Offset Freq Allows you to enter an offset frequency value and toggle the offset frequency function between On and Off The range is 0 0 Hz to 45 000 MHz While this key is activated enter an offset value from the numeric keypad by terminating with one of the frequency unit keys shown Offsets A and B are defaulted as follows while others are defaulted to 0 0 Hz Offset A 750 000 kHz Offset B 1 98000 MHz One offset frequency value corresponding to the Offset key selection is shown on this key label Offset Side Choose Neg negative or Pos posi
145. on B78 cdma2000 Measurement Personality 0 eens 187 Option B7C Baseband IQ Measurement Personality 0 0 0 0 ccc eee eens 188 Option 202 EDGE with GSM Measurement Personality o oooooo o 188 Option 200 321 4 MZ IF Cub ARA eee ee AR 189 Option 252 Retrofit EDGE to Existing GSM Measurement Personality 189 Option 0B1 Additional Copy of Manuals 0 c cee eens 189 Option OBV Component level Service Documentation 0 00 c cee eee ees 190 Option OBW Assembly level Service Documentation 00000 e eee eee eens 190 Ophion ICM Rack Mount Kilos 25 655 245s Ree PERS a is as 190 Option ICN Handled Rit osc ieee ese Cee ee koe lex A 190 Option 1CP Rack Mount with Handles Kit reres 0 0 0 ccc eens 190 Opie ICR Rar Slee AA SE eae eh ee ees 190 VSA Transmitter Tester Measurement Personalities Retrofit 190 o 5 54 526 E T Oy GERAD SIRIRR ADEA TRA RED EDES AEDS 191 AURORE contras ras ARA AAA 191 Broadband Preamplifiers and Power Amplifiers 00 cece eee eee eee 191 GPIB Cable cessed oa SAA de bese EEE BAe OE EUs AAA x 191 Parallel Internes Cable aycy cnn ii a AA Ae EDAD 191 PUG A 565050 4 2456 22255 2950 ROSS SEES CROSSE R REESE REDE 191 pa asp aha E WEA DAN A O 192 N2714A Calibration and Adjustment Software 0 0000s 192 List of Keys Lineas A reer tern ety treet eeermr tT merrn tr mtorr tT een rat erererCeeert 16
146. on Keys 2 2 25 60ds see sbeebs se ae ss eeed vans saves 69 CASAS PO dS deo eReader RA e A ERE GS 69 PUG SPS 6k 6 5 264 chee Fd oe RRES EER ES EROS SEAL ESAS S AESES IRE ERROR ROS ERE 71 PGS 0 SAA EAS IAS ASS AAA AAA E al Using System Configuration and Alignment Keys 0 000 e eee eee eens 73 Restore System Dolls ofc cce erie nee eeenbdes AE bee eed kun eam E 73 Show MOS 6 52064 o A eROSR KE EEOC ERESS ROPES RORS KER Te ARES FES 73 SHO Coren Mowe a See ek eek aed S ee ek T EES T 74 TA LOC po A GOES tee ESE Cae REE Oe oe eee ede se ee eee 76 PRAAMENE yeni iby ese eh ddd E REE E E EE N E EA eR Ee Ene eR eS at Contents 3 Setting the Mode Beleching 2 MOE eras rr dd a id rad erated E 82 Mode OU copo cacon A AA AAA AA 83 A A h baw ETT Gena PEAR H HA e eT OR SE we weweSousunesecne 83 II AN cote i AAA AAA 85 Selecting the Frequency Channel evovocicrorirra rr a ee 86 4 Making Measurements e AA A RENTES SERAN REE 88 Preparing for Measurements 0 0 00 cece eee een eet een teens 89 EOL EI IA BOREL GER ERO a a seep ees 89 Weis Measure Keys coron raserrrn eee Soe eee IA ANA AAA 89 Mae AAA A ee eek ead ews 90 Measurement Sell restric r roscar AITOR Hee Re BEE eee ES 90 CHIPS VIO a ston thew nen re Sede hbase ed AAA e e 93 Usa Markt cinnd dees adri ai 95 Making the Spectrum Frequency Domain Measurement 0 00 cece eee 97 Purpose lt 5 44 06e SE ee RSE AAA COR OEE SEES Hee URS Seeds 97 Measurement Method
147. or above a given power level The percent of time the signal spends at or above the level defines the probability for that particular power level To make the power statistics CCDF measurement the transmitter tester uses digital signal processing DSP to sample the input signal in the channel bandwidth The Gaussian distribution line as the band limited gaussian noise CCDF reference line the user definable reference trace and the currently measured trace are shown on a semi log graph If the currently measured trace is above the user reference trace it means that the higher peak power levels against the average power are included in the input signal For power statistics CCDF measurements using baseband I Q inputs see Using Baseband I Q Inputs Option B7C on page 151 136 Chapter 4 NOTE Figure 4 13 Making Measurements Making the Power Stat CCDF Measurement Making the Measurement The factory default settings provide a good starting point For special requirements you may need to change some of the settings Press Meas Setup More 1 of 2 Restore Meas Defaults at any time to return all parameters for the current measurement to their default settings Select the desired center frequency as described in Selecting the Frequency Channel on page 86 Press Measure Power Stat CCDF to immediately make a power statistics CCDF measurement To change any of the measurement parameters from the factory default va
148. or Option the license key number is For Option the license key number is For Option the license key number is For Option the license key number is For Option the license key number is For Option the license key number is If you purchase an option later you will receive a certificate that indicates the unique license key that you will need for you to install that option on your particular serial number instrument 38 Chapter 1 NOTE NOTE NOTE Getting Started Installing Optional Measurement Personalities You will need to enter a license key number only if you purchase an additional measurement personality at a later date or if you want to reactivate a measurement personality that has been deactivated Installing a License Key Also follow this procedure to reinstall a license key number that has been deleted during an uninstall process or lost due to a memory failure To install a license key number for the selected option use the following procedure 1 Press System Install Choose Option The Choose Option key accesses the alpha editor menu Use the alpha editor to enter letters upper case and the front panel numeric keys to enter numbers for the option designation Then press the Done key As you enter the option you will see your entry in the active function area of the display You must already have entered the license key for the GSM option BAH before you can enter the license key f
149. or the EDGE retrofit option 252 2 Press License Key Enter the letters digits of your license key You will see your entry in the active function area of the display When you have completed entering the license key number press the Done key 3 Press the Install Now key The message New option keys become active after reboot will appear If you want to proceed with the installation press the Yes key and cycle the instrument power off and then on Press the No key if you wish to cancel the installation process Using the Uninstall Key The following procedure removes the license key number for the selected option This will make the option unavailable for use and the message Application Not Licensed will appear in the Status Info bar at the bottom of the display Please write down the 12 digit license key number for the option before proceeding If that measurement personality is to be used at a later date you will need the license key number to reactivate the personality firmware Chapter 1 39 Getting Started Installing Optional Measurement Personalities NOTE Using the Uninstall key does not remove the personality from the instrument memory and does not free memory to be available to install another option If you need to free memory to install another option refer to the instructions for loading firmware updates located at the URL www agilent com find vsa 1 Press System More 1 of 3 More 2 of 3 Unin
150. or wmf depending on the file type selected in File Type The destination drive name will also be displayed Press the appropriate screen xxx key Files written to the A drive will be located at A screen xxx Files written to the C drive may be accessed by the following path users tp pub screen xxx Six files may be stored at the same time to either location Any subsequent files stored to the same filename will overwrite the existing file 7 The disk may be removed from the A drive once the LED on the disk drive is off Any files you have saved are now available to be printed through use of an external computer and printer or to be imported into an electronic document Files located on the C drive may be retrieved over the LAN by tp with the use of an external computer Chapter 2 65 Using System Features Using Print and Print Setup Functions The following table illustrates the keys used and key choices available to print a screen image to either the A internal floppy disk drive or the internal C drive flash memory Level 1 shows key choices available when the front panel key is pressed Level 2 shows key choices available when Print To is set to File and Level 1 keys are pressed Front Panel Key Level 1 Level 2 Print Setup Print To with File selected File Type GIF BMP WMF File Location A C Image Invert Normal HCOPy Dest FPanel Printer Print to Key P
151. ormally this occurs in the background when the instrument bandwidth is changed Chapter2 Using System Features Using System Configuration and Alignment Keys e Corrections When set to On the default state the alignment firmware applies many numerical corrections to improve amplitude accuracy of the measurement This includes an absolute amplitude adjustment at center frequency and IF flatness correction for FFT spans spectral measurements When corrections are Off the background alignments which determine corrections are disabled Corrections is a background feature which runs automatically while the instrument is on e Time Corr Time corrections are the application of a complex filter directly onto the time capture data It compensates for the complex magnitude and phase response of the analog and digital IF hardware Time corrections are less efficient take more CPU cycles than frequency corrections when only scalar magnitude FFT flatness is required but for demod or other time based not FFT measurements only time corrections can improve the flatness of imperfect IF hardware If the time correction functionality is set to Auto the default the individual measurements activate the corrections when they are needed e Restore Align Defaults Restores the instrument s align defaults This feature will only be needed if the instrument calibration locks up which may occur as a result of hardware problems Once the def
152. ows current temperature in Celsius 146 Chapter4 Making Measurements Sensors Power Ramp Timebase Freq 50 MHz Amptd Sensors Spectrum Freq Domain Waveform Time Domain anli More 1 of 2 Chapter 4 147 Making Measurements Front Panel Test Front Panel Test Purpose The front panel test checks the functionality of the instrument front panel keys and the RPG knob Test Setup Press Measure More 1 of 2 Front Panel Test Once the Front Panel Test key is pressed you will see a display with three columns appear on the screen The entries on the left side of each column describe a key On the right side of each entry you will see a 0 The front panel test requires you to press each of the front panel keys in any order with the exception of the ESC key which must be pressed last and to turn the RPG knob The first time you press a key a 1 will replace the 0 that originally appeared to the right of the key column Each additional instance of pressing a given key will result in an increment to the number listed in the column to the right of the key description For example if you press the Zoom key four times you will see a 4 to the right of the Zoom entry Rotating the RPG knob will result in a rapidly incrementing or decrementing value appearing in the column to the right of the RPG Knob entry Rotate the RPG knob clockwise and counter clockwise You will see negative or positive values appea
153. p Print to File Instrument Name System Config I O SICL Server Instrument Logical Unit System Config I O SICL Server Input Front Panel Input Atten Input Input Port Input Install System More 1 of 3 More 2 of 3 Install Now System More 1 of 3 More 2 of 3 Install IP Address System Config I O 1 Q Input Z Input I Q Waveform Marker Trace Note This feature is used when measurement is set to either spectrum or waveform K B 70 dB Meas Setup More 1 of 2 Advanced FFT Window More 1 of 2 K B 90 dB Meas Setup More 1 of 2 Advanced FFT Window More 1 of 2 K B 110 dB Meas Setup More 1 of 2 Advanced FFT Window More 1 of 2 Landscape Print Setup Print To Printer Printer Type Custom Orientation Language Print Setup Print To Printer Printer Type Custom Define Custom Length Ctrl Meas Setup More 1 of 2 Advanced FFT Size Note This feature is used when measurement is set to spectrum Level Mode Setup Trigger Ext Front Level Mode Setup Trigger Ext Rear License Key System More 1 of 3 More 2 of 3 Install Line Meas Setup Trig Source Load State File Local System Note Press the front panel System key to change from remote to local control of the instrument Log Pwr Avg Meas Setup Average Avg Type Chapter 2 57 Using System Features Key Locations Table 2 1 Key
154. plitude of the marker position on the spectrum trace Marker position is controlled by the RPG knob e Delta Allows you to read the differences in frequencies and amplitudes between the selected marker and the next e Function Off Allows you to define the selected marker function to be Band Power Noise or Off The default is Off If set to Band Power you need to select Delta e Trace Spectrum Allows you to place the selected marker on the Spectrum Spectrum Avg Spectrum Linear Spectrum Avg Linear I Q Waveform Waveform or Q Waveform trace The default is Spectrum e Off Allows you to turn off the selected marker e Shape Diamond Allows you to access the menu to define the selected marker shape to be Diamond Line Square or Cross The default shape is Diamond e Marker All Off Allows you to turn off all of the markers The front panel Search key performs a peak search when pressed A marker will automatically be activated at the highest peak Measuring Band Power A band power measurement using the markers calculates the average power between two adjustable markers To make a band power measurement 1 Press the Marker key 2 Press Trace Spectrum to activate a marker on the instantaneous spectrum signal 3 Press the Spectrum Avg key to activate a marker on the average spectrum trace 4 Press Function Band Power 5 Two marker lines are activated at the extreme left side of the horizontal scale Pre
155. power spectral density are shown in the text window Channel Power Measurement E Agilent 07 26 99 09 53 21 Basic Meas Setup ee Avg Number 20 Averages 20 On Off Avg Mode Exp Repeat Integ Bw 1 23000 MHz Chan Power Span 2 00000 MHz Channel Power Power Spectral Density 5 94 dBm 1 23000 MHz 66 84 dBm Hz More 1 of 2 132 Chapter 4 NOTE Table 4 5 Making Measurements Making the Channel Power Measurement Changing the Measurement Setup The next table shows the factory default settings for channel power measurements Parameters under the Advanced key seldom need to be changed Any changes from the factory default values may result in invalid measurement data Channel Power Measurement Defaults Measurement Parameter Factory Default Condition Meas Setup Avg Number 20 On Avg Mode Repeat Integ BW 1 23000 MHz Chan Power Span 2 00000 MHz Advanced Sweep Time 68 0 us Auto Data Points 512 Auto Res BW grayed out 27 857 kHz grayed out Trig Source Free Run Immediate a The Integ BW setting proportionally changes the Chan Power Span setting up to 10 MHz Make sure the Channel Power measurement is selected under the MEASURE menu The Meas Setup key accesses the menu which allows you to modify the average number and average mode for this measurement The following parameters can be changed according to your measurement requirement e integ
156. ption key 39 code updates 38 computers RS 232 cables 41 configuring I O 69 context dependency map mode 21 context dependency maps front panel 23 measure 22 mode 22 Corrections key 79 Corrections Off error annunciator 34 custom printer 64 D data entry 27 numeric keys 27 Data Packing spectrum measurement 102 114 DC probes use of 191 Decimation spectrum measurement 102 defaults factory presets 82 Delay key trigger menu 85 deleting an application personality 36 Delta key 96 DeskJet printers 191 diagnostic commands 174 Diagnostics key 74 display spectrum window 175 documentation option 15 transmitter tester 15 E editing text 68 Error annunciator 34 errors corrections off 35 keys 73 oven cold 35 troubleshooting front panel 180 unlock 35 ESC key 24 Ethernet Addr key 69 ethernet key 69 Index 193 Index Even Second error annunciator 35 Exit Core Firmware key 38 exponential averaging 91 Ext Front key 92 Ext Rear key 92 external reference 35 using an 71 External Reference error annunciator 34 F factory defaults presetting 82 FFT Length key 101 FFT Size menu 101 FFT Window key 100 file features 67 Firmware Revision key 74 firmware updates 38 floppy disk drive 28 Frame Timer key trigger menu 85 Free Run key 92 Freq Ref key 71 frequency selecting the 86 FREQUENCY channel key 86 front panel key menu maps
157. r in ascending or descending order depending on the direction you have turned the RPG knob Note that the two step keys the up and down arrow keys are described as the Rpg Dn and Rpg Up keys The ESC key must be pressed only after all other keys have been pressed and the RPG knob has been rotated pressing the ESC key will cause the front panel test to be cancelled 148 Chapter 4 Making Measurements Front Panel Test Results The front panel test display shows a list of front panel keys and the RPG knob followed by a times pressed indicator You will see a count of the number of times you have pressed a key next to that key on the display except for the knob next to which you will see positive or negative numbers in increments of 1 gilent 97 26 99 09 53 21 Service S Measure Power Ramp Front Panel Test O SS AAA Tinebase Freq 50 MHz Amptd Sensors Spectrum Freq Domain REE RER nou wt Wow a Waveform Time Domain More 1 of 2 ik 1 1 1 I 1 1 J 1 dl 1 1 1 1 1 1 NENE ee e te e to e fo to jo o Troubleshooting Hints If the front panel check fails contact the Agilent Technologies instrument support center See page 184 Chapter 4 149 Making Measurements Service Power vs Time Measurement Service Power vs Time Measurement Purpose This measurement is provided for internal Agilent Technologies manufacturing use 150 Chapter4 Making Measurements Using
158. r Connecting to the Serial Port RS 232 HP 24542M Modem Cable 24542M Modem Cable N N Nak oanS noo DB25 DB25 Male Female ca88a HP C2913A C2914A Cable C2913A C2914A Cable DB25 Female DB25 Male ca89a Mouse Adapter typical Typical Mouse Instrument OONDUOARWN DB9 DB9 Female Male Adapter DB25 DB25 Female Male A mouse adapter works well as a 9 pin to 25 pin adapter with a PC Chapter 1 ca810a 43 Getting Started Cables for Connecting to the Serial Port RS 232 Figure 1 13 HP 24542U Cable with 5181 6641 Adapter 24542U 5181 6641 Instrument Cable Adapter Black VOOJDAALN OOADAALON OONOTARWON Nononawn DB9 DB9 Male Female DB9 DB9 Female Male DB25 Female Figure 1 14 HP 24542U Cable with 5181 6640 Adapter 24542U 5181 6640 Instrument Cable Adapter White DCD 1 1 1 2 TX 3 3 3 4 DTR 4 4 4 5 GND 5 5 5 6 DSR 6 6 6 7 RTS 7 7 7 8 CTS 8 8 8 20 RI 9 9 9 DB9 DB9 DB9 DB9 DB25 Male Female Female Male Male Figure 1 15 HP 24542U Cable with 5181 6642 Adapter 24542U 5181 6642 Instrument Cable Adapter Gray DCD 1 1 1 2 RX 2 2 2 3 TX 3 3 3 4 DTR 4 4 4 5 GND 5 5 5 6 DSR 6 6 6 7 RTS 7 7 7 8 CTS 8 8 8 20 RI 9 9 9 22 DB9 DB9 DB9 DB9 DB25 Male Female Female Male Male 44 DB25 Male ca81la PC Printer TX RX RTS CTS DSR GND DCD DTR DB25 Female ca812a Modem TX RX RTS CTS DSR GND DCD DTR RI
159. r specifications for design criteria for systems amplifiers and other components For example it can help determine the optimum operating point to adjust each code timing for appropriate peak average power ratio throughout the wide channel bandwidth of the transmitter for a W CDMA system As this measurement is a new method there will be some correlations between CCDF curve degradation and digital radio system measurement parameters such as BER FER code domain power and ACPR Some studies will help set standards for radio design by specifying the maximum allowed CCDF curve degradation for specific systems 140 Chapter 4 Making Measurements Service Measurements Service Measurements Service measurements help you check the functionality of your instrument An exception is the power vs time measurement which is intended strictly for diagnostic use by Agilent Technologies service personnel The spectrum and waveform measurements that can be accessed through the service menu are explained in the section on basic measurements the versions of these measurements found by accessing the Basic and the Service keys are identical To access the Service mode press the Mode key and select the Service softkey The following service measurements are available Spectrum on page 97 Waveform on page 110 Timebase Frequency on page 142 50 MHz Amptd on page 144 Sensors on page 146 Front Panel Teston page 148 Pwr vs Time on page 150
160. r the instrument Input Keys By pressing the Input key you access menus that select an input port adjust input attenuation and adjust the IF align signal Activate an Input Port and Adjust Input Power e Input Port key The Input Port menu key accesses a menu which allows you to select one of the following input keys RF 50 MHz Ref and F Align These keys are explained below RF key Use the RF key to reactivate the RF input after a different input has been activated This is a 50 Q connector 50 MHz Ref key Selects the internal 50 MHz CW reference signal The displayed signal amplitude will be 25 dBm IF Align key The IF align signal is an internal calibration signal used during the auto align process Chapter 3 83 NOTE NOTE Setting the Mode Mode Setup Adjust Input Attenuation and Input Power e Max Total Pwr key The Max Total Pwr key can be activated only when nput Portis set to RF Max Total Pwr allows you to enter maximum power levels 15 dBm is the default value for the RF input The maximum total power setting is coupled to the input attenuation setting e Q Input Z key The Q Input Z key can be activated only when Input Port is set to VQ The Q Input Z key enables you to choose an input impedance of either 50 Q or 600 Q An input impedance of 600 Q may be needed for certain telecommunications applications e Input Atten key The Input Atten feature can be activated only when Portis
161. rayed out if Length Control is set to Auto ADC Range Allows you to access the menu to define one of the following ADC ranging functions a Chapter 4 Auto Select this to set the ADC range automatically For most FFT spectrum measurements the auto feature should not be selected An exception is when measuring a signal which is bursty in which case auto can maximize the time domain dynamic range if FFT results are less important to you than time domain results 101 Making Measurements Making the Spectrum Frequency Domain Measurement 102 1 Auto Peak Select this to set the ADC range automatically to the peak signal level Auto peak is a compromise that works well for both CW and burst signals 1 AutoPeakLock Select this to hold the ADC range automatically at the peak signal level Auto peak lock is more stable than auto peak for CW signals but should not be used for bursty signals 1 Manual Allows you to access the selection menu 6 dB 0 dB 6 dB 12 dB 18 dB 24 dB to set the ADC range level Also note that manual ranging is best for CW signals Data Packing Allows you to select Auto the default or the Short 16 bit Medium 24 bit and Long 32 bit methods of data packing The short medium and long methods are not compatible with all settings and should not be used unless you are familiar with data packing methods Auto is the preferred choice T Auto The data packing valu
162. rease in the time taken to make a measurement if the number of averages is increased e Avg Mode Selects between an Exp exponential or a Repeat mode of averaging This selection only affects the averaging after the number of N averages is reached set using Avg Number Normal linear averaging is always used until the specified number of N averages is reached When Measure is set to Single data acquisitions are stopped when the number of averages is reached Therefore Avg Mode has no effect on single measurements Exponential averaging When Measure is set at Cont continuous data acquisitions will continue indefinitely After N averages exponential averaging is used with a weighting factor of N the displayed average count stops at N Exponential averaging weights new data more than old data which facilitates tracking of slow changing signals The value of N is set through use of the Average key or the Avg Bursts key Repeat averaging When Measure is set at Cont data acquisitions will continue indefinitely After N averages is reached all previous result data is cleared and the average count is set back to 1 This is equivalent to pressing Measure Single and then pressing the Restart key each time the single measurement finishes e Avg Type Allows you to select type of averaging Only the types of averaging that are appropriate for the current measurement are available in that measurement The following average types are avai
163. rence Press the Reference menu key to activate a menu which allows you to select an external reference or to deactivate a 10 MHz out signal on the rear panel Front Panel Level 1 Level 2 Toggle Entry Key System Reference Freq Ref Int Ext When toggled to Ext enter any value between 1 and 30 MHz 10 MHz Out Off On e Freq Ref Allows you to select an external or an internal the default reference When toggled to Ext external you will set the external reference frequency by entering a value between 1 and 30 MHz When the instrument is locked to an external reference a green Ext Ref indicator will appear in the annunciator bar External reference values are persistent This means that the external reference frequency you select will remain active until it is changed even if the instrument is turned off and on or preset If the frequency you have input to the rear panel external frequency connector is not the same as the external frequency value you have manually set a red Ext Ref error indicator and a red Unlock error indicator will appear in the annunciator bar Chapter 2 71 Using System Features Using Input Output Configuration Keys e 10 MAz Out Activates or deactivates the 10 MHz out signal on the rear panel of the instrument The 10 MHz out can be used to lock other test equipment to the same frequency reference that is used by the transmitter tester Once activated the 10 MHz out feat
164. rent Measurement Annotation The Annunciators bar displays annunciators that indicate that hardware errors other errors or specific instrument states are detected in the instrument as explained below Error indicators are shown in red text Where applicable some states will appear in green indicating that the feature is active and performing correctly Informational annunciators are shown in white text To view error messages fully you will use keys in the Show Errors menu see page 52 The current error message with the highest priority will also appear in the Status Info Bar that appears at the bottom of the display The following annunciators are available Unlock This annunciator indicates that one or more of the internal phase locked loops are unable to maintain a phase locked state Corr Off corrections off This annunciator appears when the Corrections softkey is set to off Err error This annunciator appears when an error message is placed in the history error queue It will persist until you use the Clear Error Queue s key to clear the history error queue Ext Ref external reference The green Ext Ref annunciator indicates that the external reference has been selected and the instrument is locked to it The red Ext Ref annunciator indicates that the external reference has been selected but the instrument is not locked to that reference Note that the external reference on this instrument can be set at any fr
165. resolution The default setting is 10 00 dB per division However since Scale Coupling is defaulted to On this value is automatically determined by the measurement result Ref Value Allows you to set the reference value ranging from 250 00 to 250 00 dBm The default setting is 0 00 dBm However since Scale Coupling is defaulted to On this value is automatically determined by the measurement results Ref Position Allows you to set the reference position to either Top Ctr center or Bot bottom The default setting is Top Scale Coupling Allows you to toggle the scale coupling function between On and Off The default setting is On Upon pressing the Restart front panel key or Restart softkey under the Meas Contro menu this function automatically determines the scale per division and reference values based on the measurement results If the 1 0 Waveform window is active in the Q Waveform view the AMPLITUDE Y Scale key accesses the menu to modify the following parameters Scale Div Allows you to set the vertical scale by changing an amplitude value per division The range is 1 00 nV to 20 00 V per division The default setting is 100 0 mV However since Scale Coupling is defaulted to On this value is automatically determined by the measurement result Ref Value Allows you to set the reference value ranging from 250 00 to 250 00 V The default setting is 0 00 V However since Scale Coupling is defaulted to On this
166. result depending on the Sweep Type setting Bar Graph In the factory default condition 5 of the total integration power levels centered at the carrier frequency and 750 0 kHz and 1 98 MHz offset frequencies are shown in the figure for the Results section The corresponding measured data is shown in the text window Depending on the Meas Type selection one of the two following displays is obtained 128 Chapter 4 Making Measurements Making the Adjacent Channel Power ACP Measurement Bar Graph Total Pwr Ref A histogram of powers referenced to the total power Bar Graph PSD Ref A histogram of powers referenced to the mean power spectral density of the carrier in dBm Hz e Spectrum In the factory default condition the frequency spectrum with the FFT sweep type is displayed with the bandwidth marker lines in the graph window The corresponding measured data in the text window is the total integration power levels in dBc and dBm within the defined bandwidth as shown in the figure below Figure 4 11 ACP Measurement Spectrum View de Agilent 07 26 99 09 53 21 Basic 1 Jl offset Adv E 5e Tine 3 277 ms Averages 20 raso MECA Data Points 1024 Spectrum Total Pur Ref Auto Man Num FFT Seg 10 Auto Man 5 88 dBm 1 23 MHz Lower Relative Att 0 00 dB Depending on the Meas Type setting one of the two following displays is obtained Spectrum Total Pwr Ref A spectrum display ref
167. rinter Print the six screen files shown below are available only when HCOPy Dest is set to Printer screen1 xxx xxx depends on File Type screen2 xxx screen3 xxx screen4 xxx screen5 xxx screen6 xxx 66 Chapter 2 Using System Features Using File and Save Keys Using File and Save Keys The File and Save keys enable you to save instrument states to memory and to load instrument states into the instrument from memory For instructions on how to save a screen image to a floppy disc see Saving a Screen Image to a Floppy Disc on page 63 Front Panel Key Level 1 Level 2 Level 3 File Load State numeric entry Enter Save State numeric entry Enter Save numeric entry Enter Loading a State 1 Press File Load State A label in the active function area will read Load State 2 Use the numeric keypad to enter the number of the register from which you desire to retrieve a state you can retrieve states from registers 0 to 19 then press the Enter key Saving a State 1 Press File Save State or press the front panel Save key An active function labeled Save State will appear 2 Use the numeric keypad to enter the desired state number you can enter values from 0 to 19 then press the Enter key Chapter 2 67 Using System Features Using File and Save Keys Using the Alpha Editor Keys The alpha editor enables you to enter text All text
168. rpose The Channel Power measurement is a common test used in the wireless industry to measure the total transmitted power of a radio within a defined frequency channel This procedure measures the total power within the defined channel This measurement is applied to design characterize evaluate and verify transmitters and their components or devices for base stations and mobile stations Measurement Method The Channel Power measurement reports the total transmitted power within the channel bandwidth The measurement acquires a number of points representing the input signal in the time domain It transforms this information into the frequency domain using FFT and then calculates the channel power The effective resolution bandwidth of the frequency domain trace is proportional to the number of points acquired for FFT The fastest FFT process is achieved using a number of acquired points that is a power of 2 for example 64 128 512 Since the measurement is optimized for speed and accuracy you are permitted to change only the number of acquired data points in powers of 2 not the actual resolution bandwidth which is shown in gray However if absolute sweep time is required it can be changed to the user s specific value at the expense of reduced speed At no time will both sweep time and data points be set to manual because of conflicting parameter settings This flexibility is available through the Advanced menu of the channel power mea
169. rsion of firmware using a LAN connection Instructions for loading future firmware updates are available at the following URL www agilent com find vsa Viewing a License Key Measurement personalities purchased with your instrument have been installed and enabled at the factory You will receive a unique License Key number with every measurement personality purchased The license key number is a hexadecimal number that is for your specific measurement personality instrument serial number and host ID It enables you to install or reactivate that particular personality Follow these steps to display the unique license key for a measurement personality that is already installed in your instrument 1 Press System Install Choose Option The Choose Option key accesses the alpha editor Use the alpha editor to enter letters upper case and the front panel numeric keys to enter digits for a personality option that is already installed in the instrument 2 Press the Done key on the alpha editor menu The unique license key number for your instrument will now appear on the License Key softkey You will want to keep a copy of your license key number in a secure location Please enter your license key numbers below for future reference If you should lose your license key number call your nearest Agilent Technologies service or sales office for assistance License Key Numbers for Instrument with Serial F
170. s 0 10 to 20 00 dB with 0 01 dB resolution The default setting is 2 00 dB Chapter 4 139 Making Measurements Making the Power Stat CCDF Measurement Using the Markers The Marker front panel key accesses the menu to configure the markers e Select Allows you to activate up to four markers with the corresponding numbers respectively The selected number is underlined and its function is defined by pressing the Function key The default selection is 1 e Normal Allows you to activate the selected marker to read the power level and probability of the marker position on the selected curve for example which is controlled by the RPG knob e Delta Allows you to read the differences in the power levels and probabilities between the selected marker and the next e Function Allows you to set the selected marker function to Band Power Noise or Off The default setting is Off The Band Power and Noise functions are not available for this measurement e Trace Allows you to place the selected marker on the Measured Gaussian or Reference curve The default setting is Measured e Off Allows you to turn off the selected marker e Shape Allows you to access the menu to set the selected marker shape to Diamond Line Square or Cross The default setting is Diamond e Marker All Off Allows you to turn off all of the markers Troubleshooting Hints The power statistics CCDF measurement can contribute in setting the signal powe
171. s a peak search and accesses softkeys that automatically position markers at preset locations on the trace for example to determine the difference between the amplitude of one peak and another 26 Chapter 1 Getting Started Front Panel Description 9 Probe Power The probe power input supplies power for external 10 RF Input probes the three connectors are a ground and a 15 V and a 12 6 V connector The probe power supplies power to high frequency probes and accessories such as preamplifiers that are used as accessories to the transmitter tester The probe power provides a maximum of 150 mA The 50 Q RF input allows for input of an external RF signal The connector is a type N female and is rated for a maximum input of 35 dBm for measuring a CW signal and a maximum of 26 volts for a DC signal 11 Data Entry keys are used to enter numeric values Entries made Chapter 1 using data entry keys will be visible in the active function area see the section on annotation on page 33 to locate the active function area e The Enter key is used to terminate numeric data where no units of measurement are being entered or where you want to terminate with the default unit of measurement For operations involving selection of a unit of measurement for example dB dBm Hz s degrees radians the Units softkey menu explained below is used to terminate numeric entries e Units softkeys are used to enter units of meas
172. sist United States tel 1 800 452 4844 Canada tel 1 877 894 4414 fax 905 282 6495 Japan tel 81 426 56 7832 fax 81 426 56 7840 Latin America tel 305 269 7500 fax 305 269 7599 Australia Asia Call Center Numbers New Zealand tel 0 800 738 378 fax 64 4 495 8950 Europe tel 31 20 547 2323 fax 31 20 547 2390 tel 1 800 629 485 fax 61 3 9210 5947 Country Phone Number Fax Number Singapore 1 800 375 8100 65 836 0252 Malaysia 1 800 828 848 1 800 801664 Philippines 632 8426802 632 8426809 1 800 16510170 PLDT 1 800 16510288 PLDT Subscriber Only Subscriber Only Thailand 088 226 008 outside Bangkok 66 1 661 3714 662 661 3999 within Bangkok Hong Kong 800 930 871 852 2506 9233 Taiwan 0800 047 866 886 2 25456723 People s Republic of China 800 810 0189 preferred 10800 650 0021 10800 650 0121 India 1 600 11 2929 000 800 650 1101 Returning Your Instrument to Agilent Technologies If you are returning your transmitter tester to Agilent Technologies for servicing fill out and attach a blue repair tag to the instrument Repair tags are located at the end of this chapter Include as much information as possible about the problem Record any error messages that appeared on the display and include performance test results or any other specific data on the performance of the instrument Ship the instrument in t
173. ss Normal and move marker 1 to the desired place by rotating the RPG knob 108 Chapter4 Making Measurements Making the Spectrum Frequency Domain Measurement 6 Press Delta to bring marker 2 to the same place as marker 1 7 Move marker 1 to the other desired position by rotating the RPG knob Band power measures the average power between the two markers 8 When the band power markers are active the results are shown in the results window as Mean Pwr Between Mks When the band power function is off the results window reads Mean Pwr Entire Trace Troubleshooting Hints Changes made by the user to advanced spectrum settings particularly to ADC range settings can inadvertently result in spectrum measurements that are invalid and cause error messages to appear Care needs to be taken when using advanced features Chapter 4 109 NOTE Making Measurements Making the Waveform Time Domain Measurement Making the Waveform Time Domain Measurement Purpose The waveform measurement is a generic measurement for viewing the input signal waveforms in the time domain This measurement is how the instrument performs the zero span functionality found in traditional spectrum analyzers Also available under basic mode waveform measurements is an I Q window which shows the I and Q signal waveforms in parameters of voltage versus time The advantage of having an I Q view available while in the waveform measurement is that it
174. stall Choose Option Pressing the Choose Option key will activate the alpha editor menu Use the alpha editor to enter the letters upper case and the front panel numeric keyboard to enter the digits if required for the option then press the Done key As you enter the option you will see your entry in the active function area of the display 2 Press the Uninstall Now key after you have entered the personality option Press the Yes key if you want to continue the uninstall process Press the No key to cancel the uninstall process 3 Cycle the instrument power off and then on to complete the uninstall process 40 Chapter 1 Figure 1 5 Figure 1 6 Getting Started Cables for Connecting to the Serial Port RS 232 Cables for Connecting to the Serial Port RS 232 There are a variety of cables and adapters available for connecting to PCs and printers Several of these are documented in the following wiring diagrams You need to find out what connections your equipment uses to identify the cables and or adapters that you will need HP 34398A RS 232 Cable Kit This kit comes with an RS 232 9 pin female to 9 pin female null modem printer cable and one adapter 9 pin male to 25 pin female HP part number 5181 6641 The adapter is also included in HP 34399A RS 232 Adapter Kit HP 34399A RS 232 Adapter Kit This kit includes four adapters to go from DB9 female cable HP 34398A to PC printer DB25 male or female or to modem D
175. start is the same as resuming from the beginning of the measurement instead of from the point at which it was paused Measurement Setup The Meas Setup key accesses features that enable you to adjust parameters of the current measurement such as resolution bandwidth You will also use the Meas Setup menu to access Average Trig Source and Advanced measure setup feature menus The following features can be used with many measurements e Res BW Changes the resolution bandwidth of a given measurement Selection of a narrower bandwidth will result in a longer data acquisition time e Restore Meas Defaults Presets only the settings that are specific to the selected measurement This will set the measure setup parameters to the factory defaults only for the currently selected measurement Averaging Features in the Average menu allow you to modify the number average mode and type of averaging you use for the currently selected measurement The features available for averaging will vary slightly depending on the measurement that is currently active On the display averaged trace results are shown in blue while the instantaneous signal is shown in yellow 90 Chapter4 Making Measurements Preparing for Measurements e Avg Number Modifies the number of times the current measurement will be repeated with the results from the repeated measurements averaged Increased averages usually give more accurate results There will be an inc
176. surement To improve repeatability you can increase either the number of averages or the number of data points with longer time record length The channel power graph is shown in the graph window while the absolute channel power in dBm and the mean power spectral density in dBm Hz are shown in the text window For channel power measurements using baseband I Q inputs available with Option B7C see Using Baseband I Q Inputs Option B7C on page 151 Chapter 4 131 NOTE Figure 4 12 Making Measurements Making the Channel Power Measurement Making the Measurement The factory default settings provide a good starting point You may want to change some of the settings Press Meas Setup More 1 of 2 Restore Meas Defaults at any time to return all parameters for the current measurement to their default settings Select the desired center frequency as described in Changing the Frequency Channel Press MEASURE Channel Powerto immediately make a channel power measurement To change any of the measurement parameters from the factory default values refer to the Changing the Measurement Setup section To make channel power measurements using baseband I Q input signals refer to the section on Using Option B7C Baseband I Q Inputs Results The next figure is an example of a Channel Power measurement result The channel power graph is shown in the graph window The absolute channel power and its mean
177. t instruments without front handles Available as P N 5063 9215 Option 1CN Handles Kit Also available as P N 5063 9228 Option 1CP Rack Mount with Handles Kit Rack mount with handle kit Rack mounts instrument which has front handles attached Available as P N 5063 9222 Option 1CR Rack Slide Kit Available as P N E4406 60115 VSA Transmitter Tester Measurement Personalities Retrofit Optional measurement personalities can be retrofitted To obtain information on available personalities updating firmware and general product information contact the following URL URL to contact to obtain product update information www agilent com find vsa Further information on installing optional measurement personalities can be found in Installing Optional Measurement Personalities on page 36 190 Chapter 6 Options and Accessories Accessories Accessories AC Probe The HP Agilent 85024A high frequency probe performs in circuit measurements without adversely loading the circuit under test The probe has an input capacitance of 0 7 pF shunted by 1 MQ of resistance and operates over a frequency range of 300 kHz to 3 GHz High probe sensitivity and low distortion levels allow measurements to be made while taking advantage of the full dynamic range of the instrument The HP Agilent 41800A low frequency probe has a low input capacitance and a frequency range of 5 Hz to 500 MHz Broadband Preamplifiers and Power
178. t its advertised performance 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 use Agilent equipment we can verify that it works properly help with product operation and provide basic measurement assistance for the use of specified capabilities at no extra cost upon request Many self help tools are available Your Advantage means that Agilent offers a wide range of additional expert test and measurement services which you can purchase according to your unique technical business needs Solve problems efficiently and gain a competitive edge by contracting with us for calibration extra cost upgrades out of warranty repairs and on site 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 By internet phone or fax get assistance with all your test amp measurement needs Chapter 5 183 If You Have a Problem Agilent Technologies Test and Measurement Support Services and Assistance Table 5 1 Contacting Agilent Online assistance www agilent com find as
179. the SICL IEEE 488 2 protocol LAN server Maximum Connections Shows you the maximum number of connections that can be accessed simultaneously The default is 5 Instrument Name Shows you the name same as the remote SICL address of your transmitter tester The default is insto Instrument Logical Unit Shows you the unique integer assigned to your transmitter tester when using SICL LAN The default is 8 Emulated GPIB Name Shows you the name same as the remote SICL address of the device used when communicating with your transmitter tester The default is gpib7 Emulated GPIB Logical Unit Shows you the unique integer assigned to your device when it is being controlled using SICL LAN The default is 8 Chapter2 NOTE NOTE Using System Features Using Input Output Configuration Keys Emulated GPIB Address Shows you the emulated GPIB address assigned to your transmitter tester when it is a SICL server This address is set using the GPIB Address key Ethernet Addr Shows the Ethernet address This is an information only feature that can not be modified by the user For more information about these and other remote programming features refer to the programmer s guide for your transmitter tester File System Press System More 1 of 3 More 2 of 3 to access the File System key The label of the File System key shows the current amount of Used memory and Free memory in units of megabyte MB Refe
180. the horizontal parameters common to the rectangular windows for this measurement 118 Scale Div Allows you to set the horizontal scale by changing a time value per division The range is 1 0 ns to 1 000 s per division with 0 01 ns resolution The default setting is 200 0 us per division However since Scale Coupling is defaulted to On this value is automatically determined by the measurement result Ref Value Allows you to set the reference value ranging from 1 0 to 10 0 s The default setting is 0 00 s However since Scale Coupling is defaulted to On this value is automatically determined by the measurement results Ref Position Allows you to set the reference position to either Left Ctr center or Right The default setting is Left Chapter 4 Making Measurements Making the Waveform Time Domain Measurement Scale Coupling Allows you to toggle the scale coupling function between On and Off The default setting is On Upon pressing the Restart front panel key or Restart softkey under the Meas Control menu this function automatically determines the scale per division and reference values based on the measurement results If the Signal Envelope window is active in the Signal Envelope view the AMPLITUDE Y Scale key accesses the menu to modify the following parameters Scale Div Allows you to set the vertical scale by changing an amplitude value per division The range is 0 10 to 20 00 dB per division with 0 01 dB
181. tion Information first page 3 Agilent 03 14 01 11 59 11 Basic I Show System Service Password res Spectrum Freq Domain PASS Next Page 95 EC O alle HN 4 ALFFF 1 k Not ed Prev Page Chapter 2 75 Using System Features Using System Configuration and Alignment Keys Figure 2 2 Option and Hardware Information second page 26 Agilent 03 14 01 11 59 47 Basic L Show System nn O Service Password _ Spectrum Freq Domain System Information HNL ID out Next Page Prev Page System Local Pressing the System front panel key will return the instrument to local control if the instrument was in remote mode being controlled by an external computer 76 Chapter2 Alignment Using System Features Using System Configuration and Alignment Keys Press System Alignments to access menus which enable you to align the instrument Press the ESC key to stop any alignment The table below diagrams the paths through which you will access alignment feature keys The feature in the cell that is greyed out requires a password Front Level 1 Level 2 Level 3 Panel Key System Alignments Auto Align On Alert Off Align All Now Align Subsystems Align RF Align IF Align ADC Align 50 MHz Reference Align Current IF Flatness Align Current Sysgain Corrections On Off Time Corr Auto On Off Restore AlignDefaults Visible Align Off Low High
182. tive to have single sided offsets relative to the carrier or Both the default to have offset frequency pairs Ref BW Allows you to enter a reference bandwidth ranging from 300 Hz to 20 0000 MHz with the best resolution of 1 Hz When this parameter is changed the integration bandwidth Integ BW in the summary data window changes to that value Chapter4 Making Measurements Making the Adjacent Channel Power ACP Measurement Avg Type Choose the type of averaging between Pwr Avg RMS or Maximum Limit Setup Allows you to access the menu to setup the limit values and conditions Abs Limit Allows you to enter an absolute limit value ranging from 200 00 to 50 00 dBm with 0 01 dB resolution Fail Allows you to access the following menu to select one of the logic keys for fail conditions between the measurement results and the test limits AND Fail is shown if one of the relative ACP measurement results is larger than Rel Lim Car or Rel Lim PSD AND one of the absolute ACP measurement results is larger than Abs Limit OR Fail is shown if one of the relative ACP measurement results is larger than Rel Lim Car or Rel Lim PSD OR one of the absolute ACP measurement results is larger than Abs Limit Absolute Fail is shown if one of the absolute ACP measurement results is larger than Abs Limit Relative Fail is shown if one of the relative ACP measurement results is larger than Rel Lim Car or Rel PSD
183. to be performed on the FFT spectrum The Off setting is used for adjustment and troubleshooting of the test instrument Chapter 4 Figure 4 2 NOTE Making Measurements Making the Spectrum Frequency Domain Measurement Changing the View The View Trace key allows you to select the desired view of the measurement from the following You can use the Next Window key to move between the multiple windows if any and make it full size by Zoom e Spectrum Provides a combination view of the spectrum graph in parameters of power versus frequency with the semi log graticules and the I Q waveform graph in the parameters of voltage and time Changes to frequency span or power will sometimes affect data acquisition e Spectrum Linear Provides a view of the linear spectrum graph in parameters of voltage and versus frequency with the linear graticules Changes to frequency span or voltage will sometimes affect data acquisition Spectrum Measurement Linear Spectrum View X Agilent 06 27 01 18 22 11 Basic 1 Viem Trace E Ch Freq 1 00000 GHz Spectrum Spectrum Freq Domain Y Ref 40 0 mV Spectrum Re D mY Linear Spectrum Linear 1 0 Polar For the widest spans the I Q window becomes just ADC time domain samples because the I Q down conversion is no longer in effect This is not the case if the Input Portis set to either Q only or Q only and you have connected baseband I Q signals to th
184. try Volts Input I Q Range Watts Input I Q Range Chapter 4 173 Making Measurements Using Baseband I Q Inputs Option B7C BbIQ Programming Commands This is asummary of the SCPI commands related to the operation of Option B7C Baseband I Q Inputs For complete programming information refer to the Language Reference chapter in the Programmer s Guide CALCulate Subsystem Baseband I Q Spectrum I Q Marker Query CALCulate SPECtrum MARKer IQ 1 2 3 4 Reads out current I and Q marker values Baseband I Q Waveform I Q Marker Query CALCulate WAVeform MARKer IQ 1 2 3 4 Reads out current I and Q marker values CALibration Subsystem Baseband I Q Align the Baseband IQ CALibration GIQ CALibration GIQ Performs the IQ group of alignments The query performs the alignment and returns a 0 if the alignment is successful Baseband I Q IQ Common Mode Response Null CALibration 1IQ CMR CALibration 1IQ CMR Forces a common mode response null on I Q inputs Baseband I Q IQ Flatness Calibration CALibration 1IQ FLATness CALibration I0 FLATness Activates a flatness calibration for all I Q ranges and impedance settings 174 Chapter 4 Making Measurements Using Baseband I Q Inputs Option B7C Baseband I Q IQ Offset Calibration CALibration 10 OFFSet CALibration I0 0FFSet Activates a calibration of the I Q input offset DAC DISPlay Subsystem Spectrum Y Axis Scale Div DISPlay SPECtr
185. ts are active If a feature is not currently valid the key label for that feature appears as lighter colored text or is not displayed at all Baseband I Q Key Access Locations Key Key Access Path Align IQ System Alignments Align Subsystem Baseband Align Signal Input Input Port dBm Input I Q Range dBmv Input I Q Range dBuv Input T Q Range l and Q Waveform View Trace Spectrum Measurement I Offset Input T Q Setup I Only Mode Setup Input Input Port 1 Only Input Input Port VQ Input Input Port VQ Mode Setup Input Input Port 1 Q Input Z Input I Q Setup VQ Polar View Trace 1 Q Range Input 1 Q Setup Input 1 Q Setup Mode Setup Input Input Port I Q Waveform View Trace I Q Waveform Marker Trace 1 Q Z Ref Input T Q Setup Lor Q Magnitude Meas Setup Trig Source More 1 of 2 I Waveform View Trace Spectrum Measurement Linear Envelope View Trace Waveform Measurement Q Offset Input T Q Setup Q Only Input Input Port 172 Chapter4 Making Measurements Using Baseband I Q Inputs Option B7C Table 4 11 Baseband I Q Key Access Locations Key Key Access Path Q Only Mode Setup Input Input Port Q Waveform Marker Trace Signal Envelope View Trace Waveform Measurement Spectrum Linear View Trace Spectrum Measurement V volts Input I Q Offset I Offset or Q Offset Keypad En
186. u to select the number of data points and also to toggle the data point control between Auto and Man manual The range is 64 to 65536 with the acceptable entry in powers of 2 for example 64 128 512 If set to Auto the optimum number of points is determined for the fastest measurement time with acceptable repeatability The minimum number of points that could be used is determined by the sweep time and the sampling rate You can increase the length of the measured time record capture more of the burst by increasing the number of points but the measurement will take longer Res BW Shows information on the resolution bandwidth derived from the sweep time This key is always grayed out Trig Source Allows you to choose a trigger source from Free Run Immediate Video IF Envip RF Burst Wideband Ext Front Ext Rear Frame 1 Q Input or Line 134 Chapter 4 Making Measurements Making the Channel Power Measurement Changing the Display The AMPLITUDE Y Scale key accesses the menu to set the desired vertical scale and associated settings e Scale Div Allows you to enter a numeric value to change the vertical display sensitivity The range is 0 10 to 20 00 dB with 0 01 dB resolution The default setting is 10 00 dB However since the Scale Coupling is defaulted to On this value is automatically determined by the measurement result e Ref Value Allows you to set the absolute power reference value ranging from
187. um n WINDow m TRACe Y SCALe lt power gt DISPlay SPECtrum n WINDow m TRACe Y SCALe Sets the amplitude reference level for the y axis Spectrum Y Axis Reference Level DISPlay SPECtrum n WINDow m TRACe Y SCALe lt power gt DISPlay SPECtrum n WINDow m TRACe Y SCALe Sets the amplitude reference level for the y axis Waveform Y Axis Scale Div DISPlay WAVeform n WINDow m TRACe Y SCALe lt power gt DISPlay WAVeform n WINDow m TRACe Y SCALe Sets the scale per division for the y axis Waveform Y Axis Reference Level DISPlay WAVeform n WINDow m TRACe Y SCALe lt power gt DISPlay WAVeform n WINDow m TRACe Y SCALe Sets the amplitude reference level for the y axis Chapter 4 PDIVision PDIVision RLEVel RLEVel PDIVision PDIVision RLEVel RLEVel 175 Making Measurements Using Baseband I Q Inputs Option B7C INPut Subsystem The INPut subsystem controls the characteristics of all the instrument input ports Baseband I Q Select Input Impedance INPut IMPedance IQ U50 B600 U1M B1M INPut IMPedance IQ Selects the characteristic input impedance when input port is set to I or Q This is the impedance value as well as the unbalanced U or balanced B impedance mode Baseband I Q Select Input Impedance Reference INPut IMPedance REFerence lt integer gt
188. ure is persistent so if it is set to On it will remain on even if the instrument has been preset or powered off and then on 72 Chapter2 NOTE NOTE Using System Features Using System Configuration and Alignment Keys Using System Configuration and Alignment Keys There are number of different keys that can help you with understanding the current instrument configuration and for hardware alignment Some features are intended for use only by service personnel and cannot be accessed without a service password If after pressing a key a message appears requesting entry of a password you should understand this to indicate that this feature is meant for service use only The password is not available unless the user has purchased the service guide Restore System Defaults Press System More 1 of 3 More 2 of 3 to access the Restore Sys Defaults key There are some instrument functions that stay set to the last value that you selected even if you press the instrument preset key or turn the power off and on The Restore Sys Defaults key allows you to preset those functions back to the original factory settings Pressing this key will preset functions like the GPIB IP address external reference trigger settings and auto alignment selection You will have to reset these items to return to the your previous setup Show Errors Press System Show Errors to activate a menu with features that enable you to move around i
189. urement If the value you are entering is in units of measurement the units softkey menu will automatically appear once you enter a digit After entering the desired numeric value you terminate the entry by pressing the appropriate units of measurement softkey e Numeric keys enter numeric values as indicated on the keys In addition decimal and positive and negative sign keys are available for your use e The Step keys these are the up and down arrow keys change numeric values in increments of the current step size e The Backspace key moves the cursor backwards one space and erases the character in that space You can use the Backspace key to backspace characters in the active function area e The RPG Knob changes numeric values in increments of the current knob resolution 27 Getting Started Front Panel Description 12 Floppy Disk Drive The floppy disk drive accepts 1 44 megabyte 13 Softkeys disks For an explanation of the operation of the floppy disc drive see the Using Print Keys section on page 63 Softkeys either activate a feature or access a further softkey menu An arrow on the right side of a softkey label indicates that the key accesses a further menu The softkey which is currently active is highlighted Keys unavailable for use are greyed out If a softkey menu has multiple pages further pages will be accessed by pressing the More key which is the bottom key on any multi page menu 14 Return key
190. ustom Orientation Pre ADC BPF Meas Setup More 1 of 2 Advanced Note This feature is used when measurement is set to either spectrum or waveform Pre FFT BW Meas Setup More 1 of 2 Advanced Pre FFT Fitr Meas Setup More 1 of 2 Advanced Note This feature is used when measurement is set to spectrum Print Front Panel Printer Print Setup Printer Type Print Setup Print To Printer Print Setup Front Panel Prints Page Print Setup Print To Printer Print To Print Setup Pulse Input IF Align Signal Signal Type Pwr Avg RMS Meas Setup Average Avg Type Pwr vs Time MODE Service RBW Filter Meas Setup More 1 of 2 Advanced Note This feature is used when measurement is set to spectrum Reference System Ref Position AMPLITUDEYY Scale for spectrum or waveform or SPAN XScale for waveform Ref Values AMPLITUDE Y Scale for spectrum or waveform or SPAN XScale for waveform Res BW Meas Setup Note This feature is used when measurement is set to either spectrum or waveform Restart Front Panel Restore Align Defaults System Alignments Restore Meas Defaults Meas Setup More 1 of 2 Restore Sys Defaults System More 1 of 3 More 2 of 3 Chapter 2 59 Using System Features Key Locations Table 2 1 Key Access Locations Key Key Access Path Return Front Panel RF Input Input Port Align
191. will begin making the selected measurements The resulting data will be shown on the display or available for export 3 Select a front panel View to display the data from the current measurement Depending on the mode and measurement selected various graphical and tabular presentations are available If you have a problem and get an error message see the E4406A VSA Transmitter Tester Instrument Messages and Functional Tests Guide The main keys used in the three steps are shown in the table below Step Primary Key Setup Keys Related Keys 1 Select amp setup a MODE Mode Setup Input System mode FREQUENCY Channel 2 Select amp setup a MEASURE Meas Setup Meas Control Restart measurement 3 Select amp setup a View Trace SPAN X Scale File Save Print Print view AMPLITUDE Y Scale Setup Marker Search Display Zoom Next Window A setting may be reset at any time and will be in effect on the next measurement cycle or View Chapter 1 19 Getting Started Front Panel Keys Context Dependency Front Panel Keys Context Dependency Many of the instrument features are context dependent The functions that are available will change based on your selections of mode mode setup measurement and measurement setup The following figures represent the dependency relationships of the front panel keys Figure 1 1 System and Navigation Keys are not Context Dependent ES a Print Setup
192. y allows you to trigger off of the positive going edge Pos or the negative going edge Neg of the trigger source signal Other keys accessed under the Trigger key Trig Holdoff key Sets the period of time before the next trigger can occur e Auto Trig key Acts as a trigger timeout If no trigger occurs by the specified time a trigger is automatically generated When set to On the instrument will take data when it receives a signal from the current trigger source if no signal is received in the expected time period the time period will default to the Free Run trigger default time period When set to Off the default setting data will only be taken if a trigger has been set and the Free Run trigger will not be automatically activated Chapter 3 85 Setting the Mode Mode Setup e Frame Timer key The frame timer feature uses the internal frame clock to generate a trigger signal Period key Sets the period of the frame clock Values between 33 ns and 559 ms can be entered Offset key Allows entry of offset values between 33 ns and 10 s Reset Offset Display key Resets the display of the Offset key to Os Sync Source menu key See keys listed below e Sync Source key menu Off key Deactivates any sync source trigger that has been selected and returns you to the frame timer menu Ext Front key Synchronizes the measurement to an external sync source such as a frame clock signal Ext R
193. y available as a retrofit kit E4406AU Option 252 for instruments that are already licensed to use the GSM mode Option BAH Provides EDGE 8PSK modulation transmitter measurements EVM power vs time output RF spectrum transmit band spurs Provides GSM GMSK modulation transmitter measurements power vs time phase and frequency error output RF spectrum transmit band spurs And general transmitter measurements transmit power spectrum frequency domain waveform time domain It includes the EDGE w GSM Guide which contains measurement and programming information Option 0B1 Additional Copy of Manuals Adds an additional copy of the standard manual set which includes the User s Guide the Programming Guide and Specifications manuals Current documentation is available on the VSA web page at www agilent com find vsa Documentation User s Guide Programmer s Guide Specifications Chapter 6 189 Options and Accessories Options and Measurement Personalities Option 0BV Component level Service Documentation Adds component level service documentation Documentation Component Level Information Option 0BW Assembly level Service Documentation Adds assembly level service documentation This option includes Documentation Service Guide Specifications Option 1CM Rack Mount Kit Includes rack mount flanges and hardware Used to rack moun

Agilent Technologies E4406A Satellite Radio User Manual

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