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Agilent Technologies 89441A Stereo System User Manual

1. e maama enlen Sese See Sessler o 5 SS 5 g WY 8 O 4 0 e ed Ji a Ba Al ee 3 Connect the other end of the keyboard cable to the keyboard In addition to the U S English keyboard the analyzer supports U K English German French Italian Spanish and Swedish Use only the Hewlett Packard approved keyboard for this product Hewlett Packard does not warrant damage or performance loss caused by a non approved keyboard See the beginning of this guide for part numbers of approved Hewlett Packard keyboards Caution Preparing the Analyzer for Use To configure your analyzer for a keyboard other than U S English press System Utility keyboard type Then press the appropriate softkey to select the language Configuring your analyzer to use a keyboard other than U S English only ensures that the analyzer recognizes the proper keys for that particular keyboard Configuring your analyzer to use another keyboard does not localize the on screen annotation or the analyzer s online HELP facil
2. Coherence indicates the statistical validity of a frequency response measurement 5 8 General Tasks This chapter shows you how to perform various common tasks These include setting up and using peripherals and defining and using math functions General Tasks To set up peripherals You may connect peripherals to three ports one GPIB port one serial port and one parallel port GPIB peripherals may include printers plotters and external disk drives Supported serial devices are plotters and printers Certain printers are parallel devices Connect the ports of your peripheral and analyzer with the correct cables See Preparing the Analyzer for Use for information on physical connections Turn on the peripherals Set up GPIB peripherals Determine the address of the peripheral from your peripheral s documentation Use this as lt num gt below On the analyzer press Local setup peripheral addresses Press the softkey corresponding to your device type Press lt num gt enter Repeat this step for each GPIB peripheral Set up serial peripherals Refer to your serial device s documentation to select correct setup parameters Press Serial 1 setup and enter the correct parameters Note that the parallel interface requires no special setup Display online help for more details on setup and parameter choices Plotter a
3. tort Hz top MHz A user created math function is applied to a signal General Tasks To display a summary of instrument parameters 1 Press View State 2 Press measurement state or input source state These summaries reflect the current states of important measurement input and source parameters You may use these summaries to e quickly check the current setup e document the setup The list can be printed or plotted You will note that the contents of the measurement state differ depending on the instrument mode This reflects the fact that some parameters are not used for a particular instrument mode MEASUREMENT STATE INPUT SOURCE STATE Inst Yector Channels g Range Channel Channel 2 Hode Meas from input Input Status on Status o Range dBm Range dBm Freq Start B Hz Center 5 MHz Rutorange off Autorange off Stop 1 MHz Span MHz Input 2 58 Ohm Input 2 58 Ohm 1M imped 58 Ohm IM imped 54 Ohm Res Bw Row 377 51 kHz Rbw coupling fixed Coupling AC Coupling AC Hindow Rbw mode arb Time len 8 117 us Alias LPF in Alias LPF in Window flat top Num freq pts 481 Trigger Type int source Level av HainTime Chl delay s idth 32 031 us Slope Che delay s Gate an Chl delay s Che delay s Ext arm off Arm level B GateTime Chl delay 21 25 us idth 8 117 us Arm slope above Arm delay s Che delay s Source Status on Level
4. Printer Disk Drive General Tasks To print or plot screen contents 1 Set up your printer or plotter if you haven t already done so 2 Select the output format and device type Press Plot Print output fmt and select the desired format Press device defaults and select a device if you want other than the default 3 Select the type of output port Press Plot Print output to and select the port to which your printer or plotter is attached 4 Press Local Setup system controller 5 Press Plot Print start plot print The analyzer is only able to initiate printing or plotting if it is attached to a printer or plotter and is designated as the system controller If you haven t already set up your printer or plotter see To set up peripherals All of the screen s contents except the softkey labels are printed when you complete this task You may select various parameters under the plot item and plot print setup softkeys depending on your particular peripheral To learn more about these parameters display online help for the relevant softkeys PLUI ZPRLNI start plot print abort TRACE A Chi Spectrum A Marker 6 500 600 Hz 76 673 don output fmt CPCLI output to file 4 Call disp gt E E s With a plotter you can elect to plot portions of the display
5. 3 Pull the fuse from the fuse holder cap 4 To reinstall select the proper fuse and place in the fuse holder cap AC Line Voltage Voltage Fuse Select Agilent Part Range Frequency Switch Number Type 90 140 Vrms 47 440 Hz 115 2110 0342 8 A 250 V Normal Blow 198 264 Vrms 47 63 Hz 230 2110 0055 4 A 250 V Normal Blow 5 Place the fuse holder cap in the housing and turn clockwise while pressing in Preparing the Analyzer for Use To change the RF section s fuse The fuse is installed at the factory to match the most commonly used line voltage in the country of destination 1 Unplug the power cord from the RF section the section with Agilent 89431A silk screened on its lower left rear panel 2 Using asmall screw driver pry open the power selector cover 3 Pull the white fuse holder out of the power selector and remove the fuse from the fuse holder 4 Select the proper fuse and place in the fuse holder AC Line Voltage Fuse Selector Agi RF Section Range Frequency Switch ne Type Agilent 89431A 90 110 Vrms 47 63 Hz 100 2110 0381 3A 250 V Slow Blow Agilent 89431A 103 140 Vrms 47 63 Hz 120 2110 0381 3A 250V Slow Blow Agilent 89431A 198 242 Vrms 47 63 Hz 220 2110 0304 1 5 A 250 V Slow Blow Agilent 89431A 216 264 Vrms 47 63 Hz 240 2110 0304 1 5 A 250 V Slow Blow 1 Align the white arrow on top of the fuse
6. plot print y setup You can control certain You must use the PLOT PRINT menu to select the correct type of device options ee device and port before starting a plot or print of the screen contents Y output device i Center 5 MHz Span 10 MHz OO General Tasks To save data with an internal or RAM disk You may save trace data instrument states trace math functions instrument BASIC programs and time capture buffers Select the default disk Press Save Recall default disk Press nonvolatile RAM disk volatile RAM disk or internal disk Press Return Press the softkey that matches the type of data you want to save Enter the file name if you have chosen to save to a file Use the hardkeys which have now been remapped to represent the symbols etched to the lower right of them softkeys knob and numeric keys to type in a file name Press enter For more information on the softkeys and parameter choices display online help If you are using the internal disk drive you must insert a formatted 3 5 inch flexible disk into the analyzer s internal disk drive If you want to save data but the disk has not been previously formatted see To format a disk General Tasks To recall data with an internal or RAM disk You may recall trace data instrument states trace math functions instrument BASIC programs and time capture buffers Select the default disk Pres
7. 7 7 Preparing the Analyzer for Use 5 Connect the IF section s SOURCE connector to the RF section s IN connector using the supplied 8 5 inch BNC to BNC cable 6 Connect the IF section s CHANNEL 1 connector to the RF section s OUT connector using the supplied 8 5 inch BNC to BNC cable Vector Signal Analyzer o BNC to BNC Cables 7 8 e Warning e Caution o Preparing the Analyzer for Use To install the analyzer The analyzer is shipped with plastic feet in place ready for use as a portable bench analyzer The plastic feet are shaped to make full width modular instruments self align when they are stacked Install the analyzer to allow free circulation of cooling air Cooling air enters the analyzer through the rear panel and exhausts through both sides To prevent potential fire or shock hazard do not expose the analyzer to rain or other excessive moisture Protect the analyzer from moisture and temperatures or temperature changes that cause condensation within the analyzer The operating environment specifications for the analyzer are listed in the Technical Data publication in the beginning of your Installation and Verification Guide Use of the equipment in an environment containing dirt dust or corrosive substances will drastically reduce the life of the disk drive and the flexi
8. 5 4 Characterizing a Filter To use the relative marker Continue from To set up a frequency response measurement or from Using the absolute marker Move the marker to the largest part of the frequency response trace if it is not already there Press Shift Marker Establish the reference point for the relative offset marker Press Marker zero offset or Press Shift Marker Move the marker with the knob to view the relative gain loss of this particular filter at different frequencies The offset marker allows you to establish a reference point with the square shaped marker As you move diamond shaped marker the value displayed by the marker readout reflects the difference between the reference point and the marker AVERAGE COMPLETE RMS 56 The marker frequency and amplitude reflect the value of the diamond shaped marker relative to the offset square marker TRACE A Freq Response A Offset 525 000 Hz 35 45 dB Spon 10 MHz The marker reflects the amplitude and frequency relative to the reference point 5 5 Characterizing a Filter To use the search marker Complete To set up a frequency response measurement or continue from one of the previous marker measurements Move the marker to the largest part of the frequency response trace if it is not already there Press Shift Marker Activate and zero the offset mark
9. CABLE P N 8120 1689 OPERATION CABLE P N 8120 1378 OPERATION North America Japan Option 904 Option 918 lt lt Line 1 A Earth Line SS we A Line 2 neutral PLUG NEMA 6 15P 250V 6Axx PLUG MITI 41 9692 125V 12A CABLE x P N 8120 0698 OPERATION CABLE P N 8120 4753 OPERATION Switzerland J Denmark Option 906 SO Option 912 yA wae e arth ae ine Neutral PLUG SEV 1011 1959 24507 TYPE 12 220V 6A PLUG DHCR 107 220V 6A CABLE P N 8120 2104 OPERATION CABLE P N 8120 2956 OPERATION The number shown for the plug is the industry identifier for the plug only the number shown for the cable is an Agilent part number for a complete cable including the plug UL listed for use in the United States of America Warning The power cable plug must be inserted into an outlet provided with a protective earth terminal Defeating the protection of the grounded analyzer cabinet can subject the operator to lethal voltages 7 4 Warning Preparing the Analyzer for Use To do the incoming inspection The analyzer was carefully inspected both mechanically and electrically before shipment It should be free of marks or scratches and it should meet its published specifications upon receipt Inspect the analyzer for physical damage incurred in transit If the analyzer was damaged in transit do the following e Save all packing materials e File a claim with the carrier e Call your Agilent Technologies sales and se
10. Format disk in progress message is displayed or when the disk s busy light is on General Tasks To create a math function In this section you learn how to create a math function which inverts a signal Initialize the analyzer Press Preset Define a constant Press Math define constant define K1 Press real part 1 enter imag part O enter Define a math function Press Math define F1 Press constant K1 meas data spectrum enter A math function remains in memory through a Preset but will be erased when you power down the analyzer If you want to preserve the math function for future use save it in the non volatile RAM or on an internal disk TRACE A Chi Spectrum A Marker 5 MHz 82 293 dor de as K1 5PE SPECI You can create up to 6 functions and 5 constants General Tasks To use a math function In this section you learn how to apply aa math function to a signal This task assumes that you have completed To create a math function 1 Initialize the analyzer Press Preset 2 Provide an averaged signal from the internal source Press Source source on Average average on 3 Apply the inversion math function you created to this signal Press Measurement Data math func F1 4 Press Auto Scale TRACE A F1 K1 SPEC1 A Marker 5 MHz 56 377 dor
11. 28 dBVpk Average Status on Num averages 14 Type arbitrary Sine freq 1 MHz Type rms expo Repeat avg off Output Z 5 Ohm OC offset B V Overlap BE Fast avg off Press View State gt off to turn off this table Press View State gt off to turn off this table State summaries provide a quick view of the instrument setup parameters Preparing the Analyzer for Use Warning Caution Preparing the Analyzer for Use This chapter contains instructions for inspecting and installing the analyzer This chapter also includes instructions for cleaning the screen transporting and storing the analyzer Power Requirements The analyzer can operate from a single phase ac power source supplying voltages as shown in the table With all options installed the total power consumption of both sections is less than 1025 VA AC Line Voltage Range Frequency 90 140 Vrms 47 63 Hz 198 264 Vrms 47 63 Hz The line voltage selector switches are set at the factory to match the most commonly used line voltage in the country of destination the appropriate fuses are also installed To check or change either the line voltage selector switch or the fuse see the appropriate sections later in this chapter Only a qualified service person aware of the hazards involved should measure the line voltage Before applying ac line power to the analyzer ensure the line voltage selector switches are set for the proper line v
12. HT recalling data GS 6 5 spectrogram displays OP 5 16 trace GS 3 2 HT waterfall displays OP 5 16 receiver HT about receivers HT GPIB address external receiver HT using an external receiver HT receiver softkey HT REF definition of HT reference filter selecting HT reference level See reference line reference line HT displaying HT examples of HT position of HT setting reference level HT setting with the marker HT tracking the range HT reference signal digital demod OP 17 9 video demod OP 18 10 reference frequency GS 7 7 references digital demod OP 17 2 Remote LED HT REMOTE OPERATION group hardkeys HT requirements grounding GS 7 3 power GS 7 2 resolution display OP 14 12 frequency OP 14 11 measurement OP 14 5 resolution bandwidth HT about resolution bandwidth HT Index and gating OP 16 5 coupling to frequency span HT digital demod OP 17 11 effect on noise OP 14 2 entering arbitrary values HT interaction with other parameters HT scalar limitations OP 14 11 setting the resolution bandwidth HT vector limitations OP 14 18 video demod OP 18 11 See also bandwidth coupling result length digital demod OP 6 8 OP 17 14 video demod OP 7 13 result length softkey HT RF section connecting to IF section GS 7 7 fuse GS 7 138 model number GS 7 11 voltage selector switch GS 7 11 rms averaging See averaging root raised cosine filters OP 17 17 RPG See knob RS232 See serial port S safety See inside front cover sampl
13. RMS 16 Measured noise band TRACE A Chi Spectrum A Marker 5 000 000 Hz 9 967 dBr dEn The diamond shaped marker provides a reference point Logtaa LA kA yea Carrier to noise ratio Hoi normalized to one dBi eat Bue Span 10 MHz Hertz i i Now the value indicated in the lower left corner of the display reflects the difference between the marker level at the carrier peak and the noise power within the band markers normalized to one Hertz bandwidth You can perform band power measurements in either Vector or Scalar Mode If you use Scalar mode and you have selected a combination of resolution bandwidth window type and number of frequency points such that the analyzer implements the detector the analyzer will prompt you to select the sample detector in order to calculate the band power accurately 2 5 Using Gating to Characterize a Burst Signal This chapter uses the time gating feature to analyze a multi burst signal which is provided on the Signals Disk which accompanies the analyzer s Operator s Guide Time gating allows you to isolate a portion of a time record for further viewing and analysis For more details on time gating concepts see Gating Concepts in the Operator s Guide 3 1 Using Gating to Characterize a Burst Signal To Use Time Gating First we ll look at the spectrum of the signal and see that three components exist Then we ll look at the time display of
14. Set the RF section s rear panel and front panel power switches to on Press the I symbol end of the rocker switches located on the lower right of the rear panel and on the lower left of the front panel The RF section provides standby power for the high precision frequency reference The rear panel line switch interrupts all power including standby power when you press the O symbol end of the switch The front panel power switch interrupts all power except standby power when you press the 6 symbol end of the switch Set the IF section s power switch to on Press the l symbol end of the rocker switch located on the lower left of the front panel The analyzer requires about 30 seconds to complete its power on routine Test the electrical performance of the analyzer using the operation verification or the performance tests in chapter 2 Verifying Specifications in the Installation and Verification Guide The operation verification tests verify the basic operating integrity of the analyzer these tests take about 2 5 hours to complete and are a subset of the performance tests The performance tests verify that the analyzer meets all the performance specifications these tests take about 5 hours to complete 7 6 1 Preparing the Analyzer for Use To connect the sections Do NOT use the IF section s EXT REF OUT connector or optional OVEN REF OUT connector as an external reference output Attach the IF secti
15. a program HT beeper on off softkey HT bins See frequency points bins defined HT bit patterns digital demodulation See symbol states block diagrams analog demodulation OP 15 3 HT arbitrary source HT chl j ch2 receiver HT connectors front panel HT block diagrams continued connectors rear panel HT digital demodulation OP 17 3 HT FFT overview HT general OP 13 11 IBASIC memory HT instantaneous spectrums HT main memory HT measurement data HT measurement memory HT scalar OP 12 3 HT source block diagram HT time capture HT traces HT vector OP 12 5 HT video demodulation OP 18 3 block size See time record size BPSK 8PSK softkey HT BT setting HT burst modulation See demodulation digital C C N carrier to noise HT C No carrier to noise density HT CAL definition of HT calibration about calibration HT adjusting calibration data HT analog demodulation calibrating HT auto zero calibration HT auto zero calibration single HT performing a single calibration HT saving calibration data HT time domain calibration HT capture See time capture carrier frequency error Gn symbol table HT carrier locking analog demod OP 15 8 video demod OP 17 8 OP 18 8 carrier offset FSK HT carrier to noise markers GS 2 4 carrier auto OP 15 8 center frequency HT setting center frequency HT setting with the marker HT signal tracking HT centronics port GS 7 15 GS Getting Started Guide OP Operator s Guide HT Online He
16. configuration changes such that the softkey function becomes active viii In This Book This book Agilent Technologies 89441A Getting Started Guide is designed to help you become comfortable with the Agilent 89441A Vector Signal Analyzers It provides step by step examples of how to use this analyzer to perform tasks which you have probably performed with other analyzers By performing these tasks you will become familiar with many of the basic features and how those features fit together to perform actual measurements This book also contains a chapter to help you prepare the analyzer for use including instructions for inspecting and installing the analyzer To Learn More About the Analyzer You may need to use other books in the analyzer s manual set See the Documentation Roadmap at the end of this book to learn what each book contains This page left intentionally blank Table of Contents 1 Using Online Help To learn about online help 1 2 To display help for hardkeys and softkeys 1 3 To display a related help topic 1 4 To select a topic from the help index 1 5 2 Making Simple Noise Measurements To measure random noise 2 2 To measure band power 2 3 To measure signal to noise ratios 2 4 To measure adjacent channel power 2 6 3 Using Gating to Characterize a Burst Signal To Use Time Gating 3 2 4 Measuring Relative Phase To measure the relative phase of an AM signal 4 2 To measure the relati
17. cords GS 7 3 power ratio GS 2 6 HT turn on failure GS 7 21 power calculation digital demodulation OP 8 4 power ratio markers GS 2 4 power spectral density GS 2 2 pre trigger delay HT preset hardkey HT printer interface GS 7 15 setting up GS 6 2 printing GS 6 3 HT aborting HT about printing HT data and file formats HT date and time HT online help printing HT output to file HT selecting an output device HT selecting display items HT setting the GPIB address HT starting HT PROBE POWER connectors HT problems digital video demod HT PSD measurements HT psk phase shift keying HT pulse length in digital demod OP 6 6 pulse modulation See demodulation digital PULSE NOT FOUND HT pulse search in digital demod OP 17 14 setup example OP 6 6 pulsed signals digital demod OP 17 14 QAM block diagram video demod OP 18 4 QAM HT QAM demodulation example OP 8 1 QPSK softkey HT R raised cosine filters OP 17 17 RAM See memory RAM disk See disk drives random noise softkey HT range HT autoranging HT example GS 5 3 setting optimum range HT single ranging HT range continued tracking the reference level HT GS Getting Started Guide OP Operator s Guide HT Online Help press Help key range hardkey HT RBW See resolution bandwidth real time bandwidth HT rear panel tour HT recalling HT about recalling HT autostate file HT BASIC programs HT capture buffer contents HT math functions HT measurement state
18. holder with the white arrow on the power selector cover All three arrows should point in the same direction Push the fuse holder into the top slot of the power selector 2 Close the power selector by pushing firmly on the power selector cover 3 Check that the correct line voltage appears through the power selector cover Preparing the Analyzer for Use To connect the analyzer to a LAN Analyzers with option UFG 4 megabyte extended RAM and additional I O have a ThinLAN and AUI attachment unit interface port for connecting the analyzer to the LAN local area network 1 Set the power switch to off O 2 Connect the ThinLAN BNC cable to the ThinLAN port or the appropriate media iN access unit MAU to the AUI port Set the power switch to on 1 Press the following keys Local Setup LAN port setup port select ThinLAN BNC or port select AUI MAU IP address internet protocol address Return LAN power on active See your LAN system administrator for the internet protocol address Your LAN system administrator can also tell you if you need to set the gateway address or subnet mask Preparing the Analyzer for Use To connect the analyzer to a serial device The IF section s Serial 1 port is a 9 pin EIA 574 port that can interface with a printer or plotter The total allowable transmission path length is 15 meters e Connect the IF section s SERIAL 1 port to a printer or plotter using a 9 pi
19. position and baseline HT using in math functions HT when you can use them HT y axis scaling HT window bandwidth defined OP 14 18 values OP 14 18 windows HT about windows HT comparison HT equivalent noise bandwidth HT example GS 5 3 window bandwidth HT window functions OP 14 6 window shapefactor HT windows for gate time record HT windows for main time record HT X x axis scaling See scaling X axis scaling and markers OP 8 7 x axis scaling with markers HT X Windows LAN use OP 10 7 X11 display using See lan Y y axis scaling See scaling Z zero padding OP 14 20 zero response OP 14 9 zero span measurements OP 15 2 HT zoom measurements OP 13 8 OP 14 3 HT GS Getting Started Guide HT Online Help OP Operator s Guide press Help key Agilent 89400 Series Documentation Roadmap If you are thinking about And you want to Then read the analyzer s Unpacking and installing the analyzer Install the analyzer or do operation verification or performance verification tests Installation and Verification Guide Getting started Make your first measurements with your new analyzer Review measurement concepts Learn what each key does Getting Started Guide Operator s Guide Online Help press the Help key Making measurements Learn how to make typical measurements Getting Started Guide and Operator s Guide Creating automated measurements To
20. receive Agilent Instrument BASIC and Agilent Instrument BASIC manuals order option 1C2 Learn the Agilent Instrument BASIC interface Program with Agilent Instrument BASIC Agilent 89400 Series Using Agilent Instrument BASIC Agilent Instrument BASIC User s Handbook Remote operation Learn about the GPIB and SCPI Find specific GPIB commands quickly Find GPIB command details GPIB Programmer s Guide Agilent 89400 Series GPIB Commands Quick Reference Agilent 89400 Series GPIB Command Reference Using analyzer data with a PC application Transfer analyzer data to or from a PC Personal Computer application Display analyzer data on a PC or display PC data on the analyzer Standard Data Format Utilities User s Guide Servicing the analyzer To receive service information order option 0B3 Adjust troubleshoot or repair the analyzer Service Guide 89441 90012 Need Assistance If you need assistance contact your nearest Agilent Technologies Sales and Service Office listed in the Agilent Catalog You can also find a list of local service representatives on the Web at http www agilent tech com services English index html or contact your nearest regional office listed below If you are contacting Agilent Technologies about a problem with your Agilent 89410A Vector Signal Analyzer please provide the following information LI Model number Agilent 89410A U Serial
21. the arbitrary source AM signal with the PM signal in register D2 Press Source source type arb datareg D2 Start a single sweep Press Pause Single Zero the offset marker on the carrier Press Shift Marker Press Shift Marker Use the search marker to measure the phase of the two largest sidebands relative to the carrier Press Marker Search next peak and note the phase displayed for the lower trace Press next peak again and note the phase SINGLE SWEEP PAUSED TRACE A Chl Spectrum A Offset 25 500 Hz 17 664 dB a dEr LogMaa A f r dB fdiv 100 y Carrier r A H ae enter 5 ia mo kHz gt 0 degrees phase TRACE B Chi Spectrum B Offset 25 500 Hz 110 97 deg Slee oo 225 b deg Hr Phs Ri y 45 A Symmetry point deg fdiv i Fi nace ea enter 5 MHZ Spon loo kHz The phase values vary with each sweep but for a PM signal the average phase of the two sidebands is equal to 90 degrees from the carrier Characterizing a Filter This section shows you how to make a typical network measurement In this example we will be characterizing a 4 5 MHz bandpass filter 5 1 Note Characterizing a Filter To set up a frequency response measurement This measurement can only be performed with a 2 channel analyzer you must have option AY7 You must u
22. the burst signal and analyze each burst separately to determine which spectral components exist in each burst 1 Select the baseband receiver mode and initialize the analyzer Press Instrument Mode receiver RF section 0 10 MHz Press Preset 2 Load the source signal file BURST DAT into data register D3 Insert the Signals Disk in the analyzer s disk drive Press Save Recall default disk internal disk to select the internal disk drive Press Return bottom softkey catalog on to display the files on the disk Rotate the knob until the file BURST DAT is highlighted Press recall trace from file into D3 enter 3 Connect the SOURCE output to the INPUT with a BNC cable 4 Turn on the source and select arbitrary signal D3 Press Source source on source type arb datareg D3 Return arbitrary Press Average average on The display should now appear as shown below AVERAGE IN PROGRESS FMS 18 TRACE A Chl Spectrum A Marker 5 000 G00 Hz 56 729 dEn dBri Loghag a7 10 a f dB a haaa A py A tenter 5 AWE Span 1 MHz The spectrum with averaging turned on Note existence of three components 3 2 Using Gating to Characterize a Burst Signal 5 Configure the display and the measurement AVERAGE IN PROGRESS TRACE A Chi Gate Spectrum A Marker dBr Log ag 10 dB fdiv 100 dBri TRAC
23. 3 Index Documentation Road Map Need Assistance Using Online Help You can learn about your analyzer from online help which is built right into the instrument and is available to you any time you use the analyzer This section shows you how to use online help to learn about specific keys or topics You can use online help in conjunction with other documentation to learn about your analyzer in depth or you can refresh your memory for keys you seldom use You can use online help while working with your analyzer since online help does not alter the analyzer setup 1 1 1 2 3 Using Online Help To learn about online help Enter the online help system Press Help Display online help for the Help hardkey Press 5 on the numeric keypad Use the knob or the up arrow or down arrow Keys to move through the pages Quit online help Press Help or Press 0 on the keypad Take a few moments to read the help overview It s only five pages long and it includes descriptions of advanced features like the index and cross reference links that can help you locate the information you need more quickly When you enter the help system it displays help on the last key you pressed If you have just turned on the analyzer online help for the Help Key is displayed When you quit help the analyzer restores the display and menu that was displayed before you enabled help Using online help does not alter your m
24. Agilent Technologies 89441A Getting Started Guide it Agilent Technologies Agilent Technologies Part Number 89441 90076 For instruments with firmware version A 08 00 Printed in U S A Print Date June 2000 Agilent Technologies 1994 1995 2000 All rights reserved 8600 Soper Hill Road Everett Washington 98205 1298 U S A This software and documentation is based in part on the Fourth Berkeley Software Distribution under license from The Regents of the University of California We acknowledge the following individuals and institutions for their role in the development The Regents of the University of California The Analyzer at a Glance 10 11 HE mb changin 12 14 13 17 15 16 18 Front Panel 1 A softkey s function changes as different menus are displayed Its current function is determined by the video label to its left on the analyzer s screen 2 The analyzer s screen is divided into two main areas The menu area a nar
25. B programming information see the Agilent 89400 Series GPIB Command Reference To connect the analyzer to an external monitor The External Monitor connector is a 15 pin connector with standard VGA pinout The External Monitor connector can interface with an external multi scanning monitor The monitor must have a 25 5 kHz horizontal scan rate a 60 Hz vertical refresh rate and must conform to EJA 343 A standards Connect the analyzer s rear panel EXTERNAL MONITOR connector to an external monitor using an appropriate cable For additional information see EXTERNAL MONITOR connector in the analyzer s online help Preparing the Analyzer for Use Caution To connect the optional keyboard The analyzer may be connected to an optional external keyboard The keyboard remains active even when the analyzer is not in alpha entry mode This means that you can operate the analyzer using the external keyboard rather than the front panel Pressing the appropriate keyboard key does the same thing as pressing a hardkey or a softkey on the analyzer s front panel Set the IF section s power switch to on 1 Connect the round plug on the keyboard cable to the KEYBOARD connector on the analyzer s front panel Make sure to align the plug with the connector pins Vector Signal Analyzer
26. CORNER BLOCKS FRONT PANEL PAD 8 REQUIRED Do not use styrene pellets in any shape as packing material for the analyzer The pellets do not adequately cushion the analyzer and do not prevent the analyzer from shifting in the carton In addition the pellets create static electricity which can damage electronic components 7 20 Preparing the Analyzer for Use If the IF section will not power up L Check that the power cord is connected to the IF section and to a live power source L Check that the front panel switch is on 1 L Check that the voltage selector switch is set properly See To change the IF section s line voltage switch on page 7 IUT L Check that the fuse is good See To change the IF section s fuse on ppge IZI L Check that the IF section s air circulation is not blocked Cooling air enters the IF section through the rear panel and exhausts through both sides If the IF section s air circulation is blocked the IF section powers down to prevent damage from excessive temperatures The IF section remains off until it cools down and its power switch is set to off O then to on 1 L Obtain service if necessary See Need Assistance at the end of this guide 7 21 Preparing the Analyzer for Use If the RF section will not power up L Check that the power cord is connected to the RF section and to a live power source L Check that the RF section s rear panel and front pan
27. Do not proceed beyond a CAUTION sign until the indicated conditions are fully understood and met vi Safety Symbols N Warning risk of electric shock N Caution refer to accompanying documents Alternating current Both direct and alternating current dle Earth ground terminal D As i Protective earth ground terminal Frame or chassis terminal Terminal is at earth potential Standby supply Units with this symbol are not completely disconnected from ac mains when this switch is off vii Notation Conventions Before you use this book it is important to understand the types of keys on the front panel of the analyzer and how they are denoted in this book Hardkeys Hardkeys are front panel buttons whose functions are always the same Hardkeys have a label printed directly on the key In this book they are printed like this Hardkey Softkeys Softkeys are keys whose functions change with the analyzer s current menu selection A softkey s function is indicated by a video label to the left of the key at the edge of the analyzer s screen In this book softkeys are printed like this softkey Toggle Softkeys Some softkeys toggle through multiple settings for a parameter Toggle softkeys have a word highlighted of a different color in their label Repeated presses of a toggle softkey changes which word is highlighted with each press of the softkey In this b
28. E B 250 it Rea 50 m fdiv 250 Press Display 2 grids more display setup grids off Press B Measurement Data main time toggle to ch1 on a 2 channel analyzer Press Ref Lvl Scale Y per div 50 mV Press Trigger trigger type internal source Press Time main length 32 us Set up the time gating and examine the first burst Press Time gate on gate length 10 us Press ch1 gate diy Marker Entry Rotate the knob until the gate is at each end of the first burst signal The display should now appear as shown to the left below Examine the second burst Rotate the knob until the gate is at each end of the second burst signal The display should now appear as shown to the right below Note that the Time menu must be displayed the gate delay softkey active and the knob in the Entry mode to move the gate by turning the knob eee AVERAGE IN PROGRESS RMS 18 5 i TRACE A Chi Gate Spectrum pabe boris SEAN BEL A Marker 5 000 000 Hz 60 171 _dBn is dBr Log ua 10 dE fdiv Center 5 MHz i Chi Main Tine B Marker Center 5 MHz Span 1 MHz i Chi Main Tine B Marker Span 1 MHz 11 054688 us 863 8693 nv 11 054666 us 79 204 H AM ANN ai Start Gs Stop 41 9421875 us Sturt o 5 Stop 31 9821075 us Spectrum top trace of the burst is derived by gating the time signal bottom trace Th
29. G gate length softkey HT gate time record HT displaying HT gate delay HT gate time HT gate delay step size HT setting the length of HT turning on off HT GATHERING DATA definition of HT gating description OP 16 2 example OP 3 3 OP 4 2 GS 3 1 in analog demodulation OP 15 13 gaussian filters OP 17 18 German softkey HT ghosted softkeys HT grids HT 1 grid HT 2 grids HT 4 grids HT hiding HT multiple GS 5 7 overlapped GS 5 7 grounding requirements GS 7 3 group delay softkey HT GSM Group Service Mobile HT guardbands analog demodulation OP 15 7 GPIB HT about the GPIB HT addressable only HT devices setting up GS 6 2 GPIB address analyzer HT GPIB address external devices HT GS Getting Started Guide OP Operator s Guide HT Online Help press Help key GPIB address external disk drive HT GPIB address external receiver HT GPIB address plotter HT GPIB address printer HT GPIB connector GS 7 16 GPIB controllers HT keys that have GPIB commands HT LAN use OP 10 6 system controller HT H half LED HT description of HT using to set the range HT hardkeys defined HT Help hardkey HT help online GS 1 1 hold scale softkey HT horizontal axis See X axis HP GL Hewlett Packard graphics language HT I I BASIC instrument BASIC See BASIC IQ information See demodulation digital ideal state softkey HT IF bandwidth external receiver HT IF center frequency external receiver HT IF section connect
30. HT FM demodulation algorithm OP 15 12 example OP 1 6 OP 3 4 FM demodulation using HT fonts HT formatting a disk GS 6 6 fourier transform OP 13 7 French softkey HT freq counter softkey HT frequency HT about frequency parameters HT center frequency HT frequency counter HT frequency span HT manual frequency setting HT reference GS 7 7 signal tracking HT span extending to 8 mhz HT start frequency HT step size HT stop frequency HT stop frequency is 10 MHz GS 7 23 using markers to set step size HT frequency domain overview OP 13 2 frequency error Gin symbol table HT frequency points OP 14 5 HT about frequency points HT and display OP 14 12 memory allocation HT setting the number of HT frequency resolution OP 14 11 frequency response measurements HT frequency response measuring GS 5 1 frequency span and display OP 14 5 and information bandwidth OP 14 3 and resolution bandwidth OP 14 14 OP 14 19 video demodulation OP 17 11 OP 18 12 front panel tour HT FSK about FSK HT block diagram OP 17 5 HT carrier magnitude error HT FSK continued carrier offset in symbol table HT deviation in symbol table HT FSK error in symbol table HT FSK error trace displaying HT FSK measured HT FSK reference HT magnitude error in symbol table HT setting the span to symbol rate ratio HT state definitions HT See also demodulation digital FTP File Transfer Protocol HT FTP and LAN OP 10 10 full span softkey HT fuse GS 7 12
31. QPSK softkey HT DVB QAM HT block diagram OP 18 4 dynamic signal analyzers OP 13 6 E entry group hardkeys HT environment operating GS 7 9 GS 7 19 Index equivalent noise bandwidth HT error amp status messages HT error analysis digital demod OP 8 12 video demod OP 8 12 error summaries video demod OP 8 8 error vector example OP 8 12 error vector magnitude in symbol table HT error vector magnitude displaying EVM trace HT EXT ARM connector HT EXT REF IN connector HT EXT REF OUT connector HT EXT TRIGGER connector HT external keyboard GS 7 17 monitor GS 7 16 external arm HT about external arm HT trigger using with external arm HT turning on off HT external disk See disk drive EXTERNAL MONITOR connector HT external receiver See receiver external setup softkey HT external softkey HT external trigger overview HT eye diagram example OP 6 5 OP 7 12 eye diagram using HT F failure power up GS 7 21 stop frequency is 10 MHz GS 7 23 fault log displaying HT FFT OP 13 6 properties of OP 13 7 See also spectrum analyzers FFT overview amp terminology HT FILLING TIME RECORD HT filters digital demodulation OP 17 16 HT gaussian OP 17 18 IF OP 14 18 raised cosine OP 17 17 square root raised cosine OP 17 17 user defined OP 9 6 GS Getting Started Guide OP Operator s Guide HT Online Help press Help key Index filters continued user defined OP 17 18 video OP 14 3 firmware version displaying
32. T gate length HT main length HT real vs complex data HT time record length and memory OP 14 19 defined OP 14 16 limitations OP 14 19 time record size defined OP 14 16 time resltn softkey HT time softkey averaging HT time changing HT time domain analysis HT time domain data displaying HT traces HT about traces HT activating multiple traces HT adding a title HT adding trace information HT auto correlation HT capture buffer contents HT changing colors HT coherence HT coordinates HT cross correlation HT cross spectrum HT traces continued data register contents HT disabling meas calculations HT displaying group delay HT displaying linear magnitude HT displaying log magnitude HT displaying multiple traces HT frequency response HT hiding HT imaginary part displaying HT instantaneous spectrum HT marker annotation HT math functions HT modifying trace labels HT multiple GS 5 7 multiple active GS 5 7 overlaid OP 6 10 overlaying HT phase displaying HT PSD HT real part real data dispaying HT recalling HT saving HT scaling data overview HT selecting measurement data HT spectrum HT time domain data HT trace boxes HT See also display See also grids transporting GS 7 20 trellis diagram using HT trigger HT about trigger HT analog demodulation OP 15 13 HT available trigger signals HT delay HT EXT TRIGGER LED HT external arm using with trigger HT external trigger HT free run trigger HT GPIB trigger HT IF chann
33. about softkeys HT bracketed softkeys HT numeric entry HT softkeys that toggle HT source HT about the source HT am modulating the output HT amplitude setting HT arbitrary waveforms HT arbitrary waveforms duration HT available source outputs HT connections HT CW fixed sine output HT dc offset setting HT displaying the source state table HT external signals using as input HT output filter disabling HT output impedance amp dBm units HT output impedance setting HT output protection clearing HT periodic chirp amp frequency span HT periodic chirp output HT periodic chirp duration HT random noise output HT sine frequency setting HT SOURCE LED HT turning on and off HT source hardkey HT source type softkey HT source setup example GS 5 3 span HT arbitrary spans HT cardinal spans HT coupling to main length HT in analog demodulation OP 15 6 maximum span HT setting span HT setting with the marker HT video demodulation OP 17 11 OP 18 12 See also frequency span span softkey HT span 8 MHz opt AYH OP 18 18 Spanish softkey HT spectral displays OP 5 1 spectral map See waterfall spectrogram HT about spectrogram displays HT colorbar HT colors selecting HT colors setting the number of HT displaying OP 5 1 enhancing HT markers using HT spectrogram continued number of traces setting HT GS Getting Started Guide HT Online Help OP Operator s Guide press Help key pausing HT printing plotting
34. acking a disk HT parallel devices setting up GS 6 2 parallel port GS 7 15 HT pausing a measurement HT PCL HP GL HT PCL printer control language HT PDC Personal Digital Cellular HT peak search HT peak track softkey HT peak tracking example OP 3 3 peak hold averaging See averaging performance test softkey HT periodic chirp softkey HT peripherals use of GS 6 2 phase GS 5 7 displayed GS 4 2 GS Getting Started Guide OP Operator s Guide HT Online Help press Help key Index relative example GS 4 1 wrap GS 5 7 phase error See demodulation digital phase noise analysis example OP 2 1 phase displaying HT PHS PHP HT plotter setting up GS 6 2 plotter interface GS 7 15 plotting GS 6 3 HT aborting HT about plotting HT changing plotter pen assignments HT data and file formats HT date and time HT default pen assignments HT output to file HT plot speed HT selecting an output device HT selecting display items HT setting P1 P2 HT setting the GPIB address HT specifying line types HT starting HT PM demodulation algorithm OP 15 10 example OP 1 4 OP 2 3 using HT points See frequency points points defined HT points per symbol setting OP 8 4 HT polar display using HT polar markers example OP 8 4 units example OP 8 4 post trigger delay HT power HT adjacent channel GS 2 6 band power GS 2 6 HT band power rms square root of HT carrier to noise HT carrier to noise density HT consumption GS 7 2
35. anel 2 Using asmall screw driver pry open the power selector cover 3 Remove the cylindrical line voltage selector 4 Position the cylindrical line voltage selector so the required voltage will be facing out of the power selector then reinstall AC Line Voltage Range Frequency Selector Switch 90 110 Vrms 47 63 Hz 100 103 140 Vrms 47 63 Hz 120 198 242 Vrms 47 63 Hz 220 216 264 Vrms 47 63 Hz 240 Warning Only a qualified service person aware of the hazards involved should measure the line voltage 5 Check to see that the proper fuse is installed See To change the RF section s fuse 6 Close the power selector by pushing firmly on the power selector cover 7 Check that the correct line voltage appears through the power selector cover Preparing the Analyzer for Use To change the IF section s fuse The fuse is installed at the factory to match the most commonly used line voltage in the country of destination 1 Unplug the power cord from the IF section the section with Agilent 89410A silk screened on its lower right rear panel 2 Using asmall screw driver press in and turn the fuse holder cap counter clockwise Remove when the fuse cap is free from the housing AC POWER O FUSE ie serial label a VOLTAGE SELECT 115V m A
36. as links but one is highlighted to identify it as the currently selected link The knob allows you to select a different link by moving the highlighting from one link to the next Once you ve selected the link you want press 4 on the keypad to display the related topic You can follow links through as many as 20 topics and still return to the original topic Just press 7 one time for each link you followed and you ll return to the original topic via all of the related topics you displayed Topic CSave Recall Hardkey Displays a softkey menu that lets you load traces into the analyzer s data registers and save and recall the following types of Files ta and from disk Individual trace Instrument state The highlighted link shows what topic is displayed if you press 4 definition HP Instrument BASIC program Time capture buffer contents NOTE When you save to the internal disk the analyzer displays a message while the save is in progress When you save to a data register RAM or non volatile RAM the Underlined links show other topics available from this online help topic operation speed does not allow the message to be displayed When the softkey menu changes the save is complete T Prev Topic 7 Print 8 Prev Page Index 1 Jump To Topie 4 Help On Help S Next Page w Quit a Using Online Help To select a topic from the help index Enter the online help
37. at the end of this guide 7 23 Index Index l 16QAM demodulation example OP 8 1 2 channels digital demod OP 6 12 video demod OP 7 15 32QAM signal example OP 9 2 A B C D LEDs HT ac line voltage GS 7 2 adjacent channel power GS 2 6 air circulation GS 7 9 aliasing digital demod OP 17 11 video demod OP 18 11 alpha entry using HT alpha setting HT AM demodulation algorithm OP 15 9 example OP 1 2 using HT amplitude droop in symbol table HT analyzers types of OP 13 4 applications softkey HT arbitrary softkey HT arbitrary source example GS 3 2 arbitrary waveforms See source arm See external arm arrow keys HT AUI connector GS 7 14 HT auto cal on off softkey HT auto sweep selecting HT auto zero calibration See also calibration autorange softkeys HT autorange using HT autostate file HT creating HT recalling HT averaging HT about averaging HT auto correlation traces HT available averaging functions HT cross correlation traces HT cross spectrum traces HT exponential averaging HT fast averaging HT frequency response traces HT in analog demodulation OP 15 13 in digital demodulation OP 17 12 instantaneous spectrum traces HT long averages and calibration HT overlap processing HT pausing HT peak hold averaging HT repeat averaging HT rms averaging HT rms exponential averaging HT selecting an averaging function HT selecting the number of averages HT single stepping HT spectru
38. ble disks The flexible disks should be stored in a dry static free environment To install the analyzer in an equipment cabinet follow the instructions shipped with the rack mount kits 7 9 Preparing the Analyzer for Use To change the IF section s line voltage switch The line voltage selector switch is set at the factory to match the most commonly used line voltage in the country of destination 1 Unplug the power cord from the IF section the section with Agilent 89431A silk screened on the lower right rear panel 2 Slide the line voltage selector switch to the proper setting for the local line voltage 3 Check to see that the proper fuse is installed See To change the IF section s fuse AC POWER serial label a VOLTAGE SELECT fis A 115V m m 230V AC Line Voltage Voltage Select Range Frequency Switch 90 140 Vrms 47 440 Hz 115 198 264 Vrms 47 63 Hz 230 Warning Only a qualified service person aware of the hazards involved should measure the line voltage Preparing the Analyzer for Use To change the RF section s line voltage switch The line voltage selector switch is set at the factory to match the most commonly used line voltage in the country of destination 1 Unplug the power cord from the RF section the section with Agilent 89431A silk screened on its lower left rear p
39. ctrical ground safety ground at the power outlet Any interruption of the protective grounding conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury WARNING Caution FUSES Only fuses with the required rated current voltage and specified type normal blow time delay etc should be used Do not use repaired fuses or short circuited fuse holders To do so could cause a shock or fire hazard DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Do not operate the instrument in the presence of flammable gases or fumes DO NOT REMOVE THE INSTRUMENT COVER Operating personnel must not remove instrument covers Component replacement and internal adjustments must be made only by qualified service personnel Instruments that appear damaged or defective should be made inoperative and secured against unintended operation until they can be repaired by qualified service personnel The WARNING sign denotes a hazard It calls attention to a procedure practice or the like which if not correctly performed or adhered to could result in personal injury Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met The CAUTION sign denotes a hazard It calls attention to an operating procedure or the like which if not correctly performed or adhered to could result in damage to or destruction of part or all of the product
40. d OP 17 13 video demod OP 18 15 See also demodulation digital See also demodulation video sync word digital demod OP 6 8 video demod OP 7 13 SYSTEM Group hardkeys HT system interconnect GS 7 16 SYSTEM INTERCONNECT connector HT T talk LED HT TDMA See also NADC Telnet about HT testing See self test ThinLAN connector GS 7 14 HT TIFF tag based file format HT time averaging OP 14 15 See averaging time capture HT about time capture HT calibration and time capture HT displaying capture information HT displaying capture buffer contents HT playback example OP 2 2 recalling capture buffer contents HT recalling data from disk OP 2 2 saving capture buffer contents HT starting a time capture HT time capture buffer HT time corrections HT time corrections analog demodulation OP 15 5 GS Getting Started Guide OP Operator s Guide HT Online Help press Help key Index time data OP 14 15 time data softkey HT time domain overview OP 13 2 time gating HT about time gating HT displaying gate time record HT gate delay HT gate length HT selecting a window HT turning on off HT See also gating time points digital amp video demodulation HT time record OP 13 7 OP 14 16 HT about the time record HT applying a window HT coupling to span HT displaying gate time record HT displaying main time record HT effects of averaging HT effects of demodulation HT effects of span HT FILLING TIME RECORD message H
41. e note that a trace which is displayed is not necessarily active capable of being configured You must specifically activate a displayed trace in order to change its configuration For example if you have chosen the relative marker in one trace then couple the markers the marker on the second trace will be absolute rather than relative unless you activate the second trace and select the relative marker AVERAGE COMPLETE RMS 58 TRACE A Freq Response A Marker 4 375 G00 Hz 6 932 dB B Marker 4 375 G00 Hz 5 7356 deg 8 ec m E mi q oll i enter 5 MHZ pan 10 MHz traces lets you compare values at the same frequency Coupling the markers on two d rai I i h i 100 5 7 Characterizing a Filter To display coherence Complete To set up a frequency response measurement or continue from one of the previous measurements 1 Display a second trace Press Display 2 grids 2 Activate the second trace and select a coherence measurement Press B Data Format magnitude linear Measurement Data more choices coherence AVERAGE COMPLETE RMS 58 TRACE A Freq Response A Marker 4 425 G00 Hz 3 2682 dB dB LogMaa ka i RA lil
42. e frequency See sample rate sample rate OP 14 14 video demodulation OP 17 11 OP 18 12 samples defined HT saving HT about saving HT autostate file HT calibration trace HT capture buffer contents HT math functions HT measurement state HT re saving BASIC programs HT saving BASIC programs HT saving data GS 6 4 traces HT scalar measurements HT about scalar mode HT GS Getting Started Guide HT Online Help OP Operator s Guide press Help key Index block diagram HT block diagrams OP 12 3 limitations OP 14 11 overview OP 12 2 scale at markers softkey HT scaling HT auto scaling HT x axis HT x axis scaling linear vs log HT X axis example OP 8 7 y axis scaling HT scan time See sweep time screen cleaning GS 7 19 search length HT digital demod OP 6 8 video demod OP 7 13 search length in digital demod OP 17 14 self test HT long confidence test HT quick confidence test HT self test log HT serial 1 port GS 7 15 serial 1 serial 2 connectors HT serial 2 port GS 7 7 serial devices setting up GS 6 2 serial number displaying HT serial number location HT serial port configuring amp cabling HT serial x setup softkey HT shifted functions HT shipping GS 7 20 signal to noise markers GS 2 4 signal track softkey HT signal tracking HT sine freq softkey HT single measurements running HT single range softkeys HT single ranging HT single sweep selecting HT SNR digital video demodulation HT softkeys HT
43. e gate s delay and length are selected to encompass the burst signal vertical markers show gate position Note existence of the first spectral component in the left display and the existence of the other two components in the right display 3 3 Measuring Relative Phase This section shows you how to make typical relative phase measurements on modulated carrier signals In this example you measure the phase of sidebands on AM and PM signals relative to the carrier The test signals are provided on the Signals Disk which accompanies the analyzer s Operator s Guide 4 1 Measuring Relative Phase To measure the relative phase of an AM signal 1 Select the baseband receiver mode and initialize the analyzer Press Instrument Mode receiver RF section 0 10 MHz Press Preset 2 Load AM and PM signals from the Signals Disk into registers and play the AM signal through the source Insert the Signals Disk in the internal disk drive Use the BNC cable to connect the SOURCE output to the INPUT Press Save Recall default disk internal disk Press Return catalog on Rotate the knob to highlight AMSIG DAT Press recall trace from file into D1 enter Rotate the knob to highlight PMSIG DAT Press from file into D2 enter Press Source source on source type arbitrary 3 Configure the measurement and display Press Frequency span 150 kHz Press Trigger trigger type internal so
44. easurement setup Topic Help Hardkey How to use online Help al Tf you want to then do this EXIT help Fress Help or CH Display help for a key Fress that key Display the index Fress 1 Fage through a topic Fress an arrow key Scroll through a topic Turn the knob Select a link Turn the knob Jump to the selected link Fress 4 Return to a previous topic Fress 7 Frint a topic Fress 8 Scroll down iturn the knob for more help Prey Topic 7 Print 8 Prev Page Index 1 This legend shows which numeric keys access online help features Jump To Topic 4 Help On Help 5 Next Page w Quit a 1 2 aS Using Online Help To display help for hardkeys and softkeys This example displays topics related to triggering Enter the online help system Press Help Display help for a hardkey Press Trigger Use the knob or the up and down arrow keys to page through the topic Select a softkey topic Press trigger type IF channel 1 Quit online help Press Help or Press 0 on the keypad Pressing Preset always returns the analyzer to its preset state If you press any other key when help is enabled the analyzer displays a help topic describing the key s function For help on the preset state select Preset hardkey from the help index you will learn how to do this later in this section or press Preset then Help Topic IF channel 1 Softkey tri
45. el power switches are on 1 L Check that the voltage selector switch is set properly See To change the RF section s line voltage switch on page III L Check that the fuse is good See To change the RF section s fuse on pade 7 I3T J L Check that the RF section s air circulation is not blocked Cooling air enters the RF section through the rear panel and exhausts through both sides If the RF section s air circulation is blocked the RF section powers down to prevent damage from excessive temperatures The RF section turns back on when it cools down L Obtain service if necessary See Need Assistance at the end of this guide 7 22 Preparing the Analyzer for Use If the analyzer s stop frequency is 10 MHz L Check that the RF section s fan is running If the fan is not running see If the RF section will not power up L Check that the Serial 2 port on the IF section and on the RF section are connected together L Press Instrument Mode and check that the receiver softkey displays RF section 2 2650 MHz If the receiver softkey does not display RF section 2 2650 MHz press receiver RF section 2 2650 MHz J L Leaving the RF section on turn the IF section off O then on 1 The IF section will not detect the RF section if the RF section was not on before the IF section performs the power on routine Q Obtain service if necessary See Need Assistance
46. el trigger HT input channel trigger HT level HT slope HT source trigger HT trigger holdoff HT trigger LED HT trigger line HT trigger type softkey HT troubleshooting digital demod HT two channels GS Getting Started Guide OP Operator s Guide HT Online Help press Help key digital demod OP 6 12 video demod OP 7 15 U U K English softkey HT U S English softkey HT UFG LAN and 4 MB memory option HT UG7 advanced LAN option HT UNCAL definition of HT units x axis HT units y axis HT user defined filters OP 17 18 V vector averaging See time averaging vector diagram example OP 6 5 OP 7 12 vector measurements OP 13 8 HT about vector mode HT block diagram HT block diagrams OP 12 5 overview OP 12 4 video averaging OP 14 3 video demodulation See demodulation video video filtering OP 14 3 view state GS 6 9 volatile RAM disk See disk drives voltage selector switch RF section GS 7 11 VSB block diagram OP 18 6 center frequency setting OP 7 4 VSB 8 16 softkey HT WwW waterfall HT about waterfall displays HT baselines showing HT displaying OP 5 1 elevation HT hiding traces HT markers using HT number of traces setting HT pausing HT printing plotting formats HT printing plotting overview HT waterfall continued recalling HT Index saving HT setting a threshold HT skewing HT spacing of traces HT trace buffers removing HT trace height HT trace selecting HT traces
47. er if it is not already activated Press Shift Marker Define the search target level and perform a search Press Marker Search search setup Press search target 6 dB Press search right search left The search marker allows you to quickly find a target value When the offset marker is activated the target value is relative to the reference point AVERAGE COMPLETE RMS 58 With the offset marker activated the 150 900 Hz 7 623 dB search marker indicates the point on the trace which is separated from the offset marker by the target value TRACE A Freq Response A Offset dB LogMag enter 5 MHZ Spon 10 MHz The search marker finds a Y axis value with reference to a target value 5 6 Characterizing a Filter To display phase Complete To set up a frequency response measurement or continue from one of the previous marker measurements Display a second trace Press Display 2 grids Activate the second trace and define it as a frequency response measurement Press B Measurement Data frequency response Specify phase data for the second trace Press Data Format phase wrap Couple the markers on traces A and B Press Marker couple mkrs on Move the markers with the knob to determine phase with respect to frequency response Overlap the two traces Press Shift A Press Display single grid In this exampl
48. erage on 5 Turn on the carrier to noise marker Press Marker Function band power markers band pwr mkr on power ratio C N 6 Press Marker Entry Rotate the knob to move the measurement band from the signal to a noise area The display should appear as below The grid lines have been turned off to highlight the band power markers AVERAGE IN PROGRESS RMS 16 Measured noise band TRACE A Chi Spectrum A Marker 5 O00 G00 Hz 8 965 dor The diamond shaped marker provides a reference point LogMaa Carrier to noise ratio TARP C N 46 251 dB enter 5 MAZ Spon 10 MAz The value indicated in the lower left corner of the display reflects the difference between the marker level at the carrier peak and the total noise within the band markers 2 4 Making Simple Noise Measurements 7 Change to a normalized noise measurement Toggle to power ratio C No The display should appear as below The grid lines have been turned off to highlight the band power markers The carrier to noise and carrier to normalized noise marker measurements require that the standard diamond shaped marker be on the signal peak as a reference If the marker is not on the displayed value will only reflect the noise level Step 3 above illustrates that there are two ways to perform certain actions by using the hardkey softkey sequence or by using the short cut shift hardkey sequence AVERAGE IN PROGRESS
49. etting HT port configuring HT ports activating HT LAN continued GS Getting Started Guide HT Online Help OP Operator s Guide press Help key Index ports selecting HT subnet mask setting HT Telnet about HT X Windows with OP 10 7 X11 display configuring HT X11 display control HT X11 display update rate HT X11 IP address setting HT leakage OP 14 6 learning products manuals HT LEDs front panel HT level softkey HT line voltage required GS 7 2 RF selector switch GS 7 11 linear averaging See time averaging lines See frequency points lines defined HT listen LED HT LO feedthrough See zero response loading files See recalling Local Area Network See LAN local oscillator OP 13 12 M magnitude error See demodulation digital magnitude log dB linear softkey HT main length softkey HT main time vs gate time HT main time record displaying HT length equal to gate length HT main length HT main time HT setting the length of HT See also time record manual sweep OP 14 13 manual sweep selecting HT manuals for this product HT Marker Cnt meaning of HT marker group hardkeys HT Marker Man meaning of HT marker readout HT Marker Entry LED HT markers HT about markers HT absolute GS 5 4 band power GS 2 3 GS 2 6 HT band power rms square root of HT carrier to noise GS 2 4 carrier to noise HT carrier to noise density HT coupled example GS 4 3 frequency counter HT marker into center f
50. european cellular telephone HT demodulation analog HT about analog demodulation HT affects on bandwidth HT AM demodulation HT auto carrier HT averaging OP 15 13 block diagram OP 15 3 HT carrier frequency displaying HT carrier locking OP 15 8 examples OP 1 1 FM demodulation HT gating OP 15 13 OP 16 5 making zero span measurements HT overview OP 12 6 PM demodulation HT triggering OP 15 13 HT two channel measurements HT See also AM FM PM demodulation demodulation digital HT about digital demodulation HT aliasing IQ measured spectrum HT amplitude droop in symbol table HT averaging HT block diagrams OP 17 3 HT BPSK 8PSK HT carrier frequency error in symbol table HT carrier locking HT connections HT constellation diagram HT GS Getting Started Guide OP Operator s Guide HT Online Help press Help key Index demodulation digital continued constellation points viewing OP 8 5 DQPSK HT error vector magnitude in symbol table HT error vector magnitude trace HT example OP 8 1 eye diagram HT filtering OP 17 16 HT filters user defined OP 9 6 formatting displays OP 17 7 IQ measured displaying HT I Q origin offset in symbol table HT I Q reference displaying HT ideal states HT magnitude error HT magnitude error FSK HT magnitude error trace HT maximum time points setting HT memory allocation HT MSK minimum shift keying HT normalization HT phase error in symbol table HT
51. formats HT printing plotting overview HT real time indicator HT recalling HT saving HT threshold setting HT trace buffers removing HT trace selecting HT turning on HT using in math functions HT spectrum analyzers comparisons OP 13 9 types of OP 13 4 spectrum measurements HT speed enhancing HT square root raised cosine filters OP 17 17 SRQ LED HT standard setups digital demodulation example OP 6 4 start frequency HT setting start frequency HT setting with the marker HT starting ameasurement HT state definitions HT See display state definitions See input state See measurement state stop frequency HT setting stop frequency HT setting with the marker HT suffix menus HT Swedish softkey HT sweep speed See sweep time sweep time described OP 14 10 See also measurement time sweep manual OP 14 13 sweeping HT about sweeping HT auto sweep selecting HT continuous sweep selecting HT manual sweep selecting HT single sweep selecting HT symbol clock adjusting HT symbol conventions See display state definitions symbol rate OP 17 11 OP 18 12 symbol rate softkey HT Index symbol states example OP 8 8 symbol table See demodulation digital symbol error table example OP 8 8 SYNC NOT FOUND HT SYNC NOT FOUND pulse search HT SYNC OUT connector HT sync pattern digital demod OP 6 9 video demod OP 7 14 See also demodulation digital See also demodulation video sync search example OP 6 8 OP 7 13 in digital demo
52. gger al Key Fath Trigger gt trigger typel These lines show the name of the selected softkey and the path to its hardkey Uses the specified channels IF signal as the trigger signal NOTE This softkey is ghosted inactive if the instrument mode is Scalar or if the measurement is baseband IF trigger is available only when the measurement is zoomed and only when the instrument mode is Vector or Oemodulation Hhen you select IF trigger the analyzer begins a measurement when the IF signal meets the trigger conditions youve specified This lets you for instance trigger the analyzer when your signal falls within the current span The trigger conditions you can specify are trigger slope and trigger delay A measurement begins when the input T Prev Topic 7 Print 8 Prev Page Index 1 Jump To Topie 4 Help On Help S Next Page w Quit a 1 3 Using Online Help To display a related help topic This example displays topics related to saving and recalling Enter the online help system Press Help Display help for a hardkey Press Save Recall Scroll with the knob to highlight the Math topic Select that topic Press 4 Return to previous topics Press 7 Quit online help Press Help On a given screen full of online help text there may be several special words or phrases that are linked to related topics Most of these words are underlined to identify them
53. his measurement display online help for the various keys used see Using Online Help if you are not familiar with how to do this Note the distinction between selecting the range the sensitivity of the analyzer s input circuitry and selecting the scale the position of the data on the display AVERAGE COMPLETE RMS 56 TRACE A Freq Response A Marker 5 000 600 Hz 37 115 dB Spon 10 MHz Frequency response data displays the output of a device under test divided by the input 5 3 Characterizing a Filter To use the absolute marker Continue from To set up a frequency response measurement 1 Move the marker to the largest part of the frequency response trace Press Marker gt marker to peak or Press Shift Marker 2 Move the marker with the knob to view the absolute gain loss of this particular filter network at different frequencies Note that there are two ways to perform some functions In this example you may move the marker to the highest point on the trace by selecting the function in asoftkey menu or by using a shift function AVERAGE COMPLETE RMS 58 The frequency and amplitude of the 4 500 000 Hz 2 567 dB trace at the marker location are shown at the top of the display TRACE A Freq Response Marker dB LogMag Spon 10 MHz The marker reflects the absolute amplitude and frequency
54. ing to RF section GS 7 7 fuse GS 7 12 model number GS 7 10 IF section 0 10 mhz softkey HT IF trigger See trigger incoming inspection GS 7 5 indent softkey HT indicators display HT INF meaning of HT information bandwidth OP 14 3 OP 14 10 input channels HT about input channels HT channel 2 with rf section HT clearing input overloads HT compensating for gain amp delay HT input channels continued Index connections HT coupling ac ordc HT dBm calculations HT disabling HT disabling the anti alias filter HT input impedance HT input state table HT input hardkey HT input section ch1 j ch2 softkey HT input state GS 6 9 installation GS 7 9 installing options HT instantaneous spectrum displaying HT instrument mode hardkey HT interface GPIB GS 7 16 LAN GS 7 14 parallel GS 7 15 serial 1 GS 7 15 serial2 GS 7 7 IQ measured signal OP 17 9 OP 18 10 IQ reference signal OP 17 9 OP 18 10 Italian softkey HT K keyboard HT about the keyboard HT connecting GS 7 17 keyboard connector HT keyboard type HT knob HT about the knob HT changing the operation of HT L LAN GS 7 14 HT about the advanced LAN UG7 HT about the lan HT activating OP 10 5 addressing OP 10 4 and FTP OP 10 10 connectors descriptions HT controlling the analyzer via the lan HT ethernet address displaying HT FTP File Transfer Protocol using HT gateway address setting HT GPIB with OP 10 6 interface connecting OP 10 1 IP address s
55. ity To connect the optional minimum loss pad The minimum loss pad option 1D7 provides a 50 ohm matched impedance to the analyzer and a 75 Q matched impedance to the device under test Connect the minumum loss pad to the RF section s INPUT or SOURCE connector Connect a 75 Q cable between the minimum loss pad and the device under test Use either a 75 Q type N cable or the supplied 75 Q type N m to BNC f adapter and a 75 Q BNC cable Do NOT connect a 50 Q cable or adapter to the 75 Q minimum loss pad The center pin is larger in a 50 Q type N connector than in a 75 Q type N connector Connecting a 50 type N connector to the 75 Q minimum loss pad will damage the 75 Q minimum loss pad A Ww DS m Caution Preparing the Analyzer for Use To clean the screen The analyzer screen is covered with a plastic diffuser screen this is not removable by the operator Under normal operating conditions the only cleaning required will be an occasional dusting However if a foreign material adheres itself to the screen do the following Set the IF section s power switch to off O Remove the power cord Dampen a soft lint free cloth with a mild detergent mixed in water Carefully wipe the screen Do not apply any water mixture directly to the screen or allow moisture to go behind the front panel Moisture behind the front panel will severely damage the instrument To prevent damage to the screen do not use clea
56. lp press Help key chl j ch2 receiver HT changing numeric parameters HT channel 1 See input channels channel 1 and 2 connectors HT channel 2 See input channels circulation air GS 7 9 cleaning the screen GS 7 19 clear source trip softkey HT coherence GS 5 8 HT color index softkey HT color adjusting HT connecting frequency reference GS 7 7 IF section to RF section GS 7 7 minimum loss pad GS 7 18 connector AUI GS 7 14 external monitor GS 7 16 external reference GS 7 7 grounding requirements GS 7 3 GPIB GS 7 16 input GS 7 8 keyboard GS 7 17 oven reference GS 7 7 parallel GS 7 15 serial GS 7 15 source GS 7 8 system interconnect GS 7 16 ThinLAN GS 7 14 connectors front panel connectors HT connectors rear panel connectors HT constellation diagram example OP 6 5 OP 7 12 using HT continuing a measurement HT continuous sweep selecting HT cooling GS 7 9 coordinates trace See traces copying files between 3 5 inch diskettes HT cords power GS 7 3 correlation HT auto correlation HT cross correlation softkey HT cross correlation math function HT coupling bandwidth OP 14 4 Index cross spectrum measurements HT CW fixed sine softkey HT D data comment header HT data format hardkey HT data registers HT about data registers HT displaying data register contents HT removing HT DATA definition of HT date changing HT dc measurements OP 14 9 dc offset softkey HT dc response OP 14 9 decibels HT DECT digital
57. m traces HT time averaging HT time exponential averaging HT video demodulation OP 18 14 with digital demodulation HT AYA vector modulation analysis HT AYB spectrogram waterfall HT spectrogram displays HT waterfall displays HT AYH video modulation analysis HT B band power measurements GS 2 3 GS 2 6 HT band selectable measurements OP 14 3 See also zoom measurements GS Getting Started Guide OP Operator s Guide HT Online Help press Help key Index bandwidth See information bandwidth See noise equivalent bandwidth See resolution bandwidth See window bandwidth bandwidth coupling OP 14 4 baseband measurements OP 14 3 HT baseband signals digital demod OP 6 12 video demod OP 7 15 BASIC HT about IBASIC HT available utilities HT creating a program with keystrokes HT debugging a program HT deleting a function HT deleting a program HT deleting a subprogram HT deleting multiple functions HT deleting multiple subprograms HT displaying a program HT displaying graphics HT editing a program HT executing a single program line HT indenting nested programs HT memory allocations HT printing a program HT program error messages HT program variables HT re saving programs HT recalling programs HT renumbering a program HT resetting a program HT running a program HT saving programs HT securing a program HT specifying columns HT stack space auto allocation HT stack space manual allocation HT stopping
58. ments In this example we will be making random noise band power noise and signal to noise measurements 2 1 Making Simple Noise Measurements To measure random noise 1 Initialize the analyzer Press Preset 2 Select a power spectral density measurement Press Measurement Data PSD select ch1 with a 2 channel analyzer 3 Turn on averaging Press Average average on 4 Start an averaged measurement Press Meas Restart 5 Use the knob to move the marker along the trace The display should be similar to the one shown below To learn more about the choices you make in this measurement display online help for the various keys used see Using Online Help if you are not familiar with how to do this AVERAGE IN PROGRESS RMS 16 REF Normalized noise TRACE A Chi PSD A Marker 730 190 000 Hz 114 5885 dBr Hz measurement 50 dBrn Hz Log Mag 150 dBrZHz enter MHz Spon 1 798 GHz In this example you are measuring the noise power of the analyzer s noise floor The displayed marker value reflects noise power normalized to a 1 Hz bandwidth Making Simple Noise Measurements To measure band power Initialize the analyzer Press Preset Turn on averaging Press Average average on Start an averaged measurement Press Meas Restart Turn on the band power markers Press Marker Function band power markers band pwr mkr on band power P
59. n female to 25 pin RS 232 C cable Part Number Cable Description Agilent 24542G 9 pin female EIA 574 to 25 pin male RS 232 HP 24542H 9 pin female ElA 574 to 25 pin female RS 232 To connect the analyzer to a parallel device The IF section s Parallel Port is a 25 pin Centronics port The Parallel Port can interface with PCL printers or HP GL plotters e Connect the IF section s rear panel PARALLEL PORT connector to a plotter or printer using a Centronics interface cable Caution Preparing the Analyzer for Use To connect the analyzer to an GPIB device The analyzer is compatible with the General Purpose Interface Bus GPIB Total allowable transmission path length is 2 meters times the number of devices or 20 meters whichever is less Operating distances can be extended using an GPIB Extender Analyzers with option UFG 4 megabytes extended RAM and additional I O have an additional GPIB connector The additional GPIB connector SYSTEM INTERCONNECT is only for connection to the spectrum analyzer used with the Agilent 89411A 21 4 MHz Down Converter Connect the analyzer s rear panel GPIB connector to an GPIB device using an GPIB interface cable The analyzer contains metric threaded GPIB cable mounting studs as opposed to English threads Use only metric threaded GPIB cable lockscrews to secure the cable to the analyzer Metric threaded fasteners are black while English threaded fasteners are silver For GPI
60. ning solutions other than the above To store the analyzer Store the analyzer in a clean dry and static free environment For other requirements see environmental specifications in the Technical Data publication in the beginning of your Installation and Verification Guide Caution Preparing the Analyzer for Use To transport the analyzer Disconnect the IF section from the RF section and package each section using the original factory packaging or packaging identical to the factory packaging Containers and materials identical to those used in factory packaging are available through Hewlett Packard offices If returning the analyzer to Hewlett Packard for service attach a tag to each container describing the following e Type of service required e Return address e Model number e Full serial number In any correspondence refer to the analyzer by model number and both serial numbers Mark the containers FRAGILE to ensure careful handling If necessary to package the analyzer in containers other than original packaging observe the following use of other packaging is not recommended e Wrap each section in heavy paper or anti static plastic e Protect the front panels with cardboard e Use double wall cartons made of at least 350 pound test material e Cushion each section to prevent damage I CARTON m ACCESSORY TRAY j
61. number LJ Options U Date the problem was first encountered L Circumstances in which the problem was encountered Q Can you reproduce the problem L What effect does this problem have on you You may find the serial number and options from the front panel of your analyzer by executing the following Press System Utility more serial number Press System Utility options setup If you do not have access to the Internet one of these centers can direct you to your nearest representative United States Test and Measurement Call Center 800 452 4844 Toll free in US Canada 905 206 4725 Europe 31 20 547 9900 Japan Measurement Assistance Center 81 426 56 7832 81 426 56 7840 FAX Latin America 305 267 4245 305 267 4288 FAX Australia New Zealand 1 800 629 485 Australia 0800 738 378 New Zealand Asia Pacific 852 2599 7777 FAX 852 2506 9285
62. oltage and the correct line fuses are installed in the fuse holders 7 2 Warning Preparing the Analyzer for Use Power Cable and Grounding Requirements On the GPIB connector pin 12 and pins 18 through 24 are tied to chassis ground and the GPIB cable shield The instrument frame chassis covers and all exposed metal surfaces including the connectors outer shell are connected to chassis ground However if channel 2 in the IF section is not installed the channel 2 BNC connector s outer shell is not connected to chassis ground DO NOT interrupt the protective earth ground or float the analyzer This action could expose the operator to potentially hazardous voltages The analyzer is equipped with two three conductor power cords which ground the analyzer when plugged into appropriate receptacles The type of power cable plug shipped with each analyzer depends on the country of destination The following figure shows available power cables and plug configurations 7 3 Preparing the Analyzer for Use United Kingdom Option 900 wee Xa Neutral Line PLUG BS 1363A 220V 5A CABLE P N 8120 1351 OPERATION Australla New Zealand Option 901 Earth ao 4 Line PLUG NZSS 198 AS C112 220V 6A CABLE P N 8120 1369 OPERATION Continental Europe North America Option 902 Option 903 Earth Earth wa J gine Line A Netii Y Neuial X Eorth PLUG CEE7 V11 220V 6A PLUG NEMA 5 15P 125V 10A
63. on to the RF section If the hardware is not installed follow the instructions supplied with the Rear Panel Lock Foot Kit If the hardware is already installed slide the IF section on top of the RF section making sure the front lock links engage the IF section s frame Screw the rear lock feet together Connect the RF section s SERIAL 2 port to the IF section s SERIAL 2 port using the supplied serial interface interconnect cable Make sure the end of the cable with the EMI suppressor is conected to the IF section Connect the RF section s OVEN REF OUT connector to the EXT REF IN connector using the supplied coax BNC to coax BNC connector If the RF section does not have the OVEN REF OUT connector option AY4 Delete High Precision Frequency Reference connect a 1 MHz 2 MHz 5 MHz or 10 MHz sine or square wave with an amplitude greater than 0 dBm to the RF section s EXT REF IN connector For best residual phase noise use 10 MHz with an amplitude greater than or equal to 5 dBm See the Technical Data publication in the beginning of your Installation and Verification Guide for specifications that require the high precision frequency reference Connect the RF section s 10 MHz REF TO IF SECTION connector to the IF section s EXT REF IN connector using the supplied 12 inch BNC to BNC cable eo JLo oe om o 0 lao oa
64. ook toggle softkey presses are shown with the requested toggle state in bold type as follows Press key name on means press the softkey key name until the selection on is active Shift Functions In addition to their normal labels keys with blue lettering also have a shift function This is similar to shift keys on an pocket calculator or the shift function on a typewriter or computer keyboard Using a shift function is a two step process First press the blue Shift key at this point the message shift appears on the display Then press the key with the shift function you want to enable Shift function are printed as two key presses like this Shift Shift Function Numeric Entries Numeric values may be entered by using the numeric keys in the lower right hand ENTRY area of the analyzer front panel In this book values which are to be entered from these keys are indicted only as numerals in the text like this Press 50 enter Ghosted Softkeys A softkey label may be shown in the menu when it is inactive This occurs when a softkey function is not appropriate for a particular measurement or not available with the current analyzer configuration To show that a softkey function is not available the analyzer ghosts the inactive softkey label A ghosted softkey appears less bright than a normal softkey Settings values may be changed while they are inactive If this occurs the new settings are effective when the
65. phase error trace HT points per symbol setting HT power calculation OP 8 4 pulse modulation HT pulse search OP 6 6 QAM HT QPSK quadrature psk HT setting up HT setup OP 6 2 OP 17 6 signal creation OP 9 2 SNR HT span for spectrum displays HT standard setups example OP 6 4 HT state definitions defining HT state definitions displaying HT symbol clock adjusting HT symbol rate setting HT symbol table HT sync offset setting HT sync pattern setting HT sync patterns pre defined HT sync search OP 6 8 sync words using HT tips for using digital demodulation HT trellis diagram HT troubleshooting HT See also FSK demodulation video HT about video demodulation HT block diagram OP 18 3 capabilities OP 18 2 carrier frequency error in symbol table HT carrier locking OP 17 8 OP 18 8 HT center frequency setting OP 7 4 constellation diagram HT constellation points viewing OP 8 5 DVB QAM 16 32 64 HT DVB QAM state definitions HT DVB QAM example OP 7 10 error vector magnitude in symbol table HT example OP 8 1 eye diagram HT filtering HT filters user defined OP 9 6 formatting and displaying OP 18 7 formatting displays OP 7 12 hexadecimal in symbol table HT I Q measured displaying HT I Q origin offset in symbol table HT ideal states HT magnitude error HT maximum time points setting HT mirrored spectrums OP 18 17 HT normalization HT phase error in symbol table HT points per symbol
66. requency HT marker into reference level HT marker into span HT marker into start frequency HT marker into stop frequency HT multiple traces HT offset GS 5 5 offset marker zeroing HT offset markers repositioning HT offset markers using HT peak tracking HT polar display markers HT power ratio GS 2 4 relative GS 5 5 repositioning markers HT search GS 5 6 search functions HT trace annotation HT turning on markers HT using for numeric entry HT using to set frequency step size HT using to update frequency values HT waterfall amp spectrogram displays HT X axis example OP 8 7 x axis scaling with markers HT markers polar See polar markers math HT about math HT cross correlation math function HT defining a math constant HT displaying math functions HT displaying results HT math constants overview HT math function operands HT math functions HT memory for math buffers HT recalling math functions HT saving math functions HT user defined GS 6 7 waterfall spectrogram displays HT MAU connector HT GS Getting Started Guide OP Operator s Guide HT Online Help press Help key measured filter selecting HT measured signal video demod OP 18 10 measured signal digital demod OP 17 9 measurement calculations disabling HT measurement data about HT MEASUREMENT Group hardkeys HT measurement points defined HT measurement resolution OP 14 11 measurement speed enhancing HT measurement sta
67. ress ResBW Window detector sample Press Marker Function band power markers Change the width of the band Press band right Marker Entry then use the knob to move the marker to the desired location Press band left then use the knob to move the marker to the desired location The display should similar to the one below The grid lines have been turned off to highlight the band power markers Band power markers TRACE A Chl Spectrum A Marker 6 495 000 Hz 67 63 dou LogMag Band power magnitude 1R2 Pouer 32 953 dB Center 901 MHz Span 1 798 GHz In this example you are measuring the power of the analyzer s noise floor within a defined band The value displayed in the lower left corner of the display reflects the total power within the frequency band encompassed by the markers The grid lines have been turned off to highlight the band power markers 2 3 Making Simple Noise Measurements To measure signal to noise ratios 1 Select the baseband receiver mode and initialize the analyzer Press Instrument Mode receiver RF section 0 10 MHz Press Preset 2 Supply a signal from the internal source Connect the SOURCE output to the INPUT with a BNC cable Press Source source on sine freq 5 MHz 3 Place the marker on the signal peak Press Marker gt marker to peak or Press Shift Marker 4 Select video averaging Press Average av
68. row column at the screen s right edge displays softkey labels The data area the remaining portion of the screen displays traces and other data 3 The POWER switch turns the analyzer on and off 4 Use a 3 5 inch flexible disk DS HD in this disk drive to save your work 5 The KEYBOARD connector allows you to attach an optional keyboard to the analyzer The keyboard is most useful for writing and editing Agilent Instrument BASIC programs 6 The SOURCE connector routes the analyzer s source output to your DUT If option AY8 internal RF source is installed the conector is a type N If option AY8 is not installed the connector is a BNC Output impedance is selectable 50 ohms or 75 ohms with option 1D7 minimum loss pads The EXT TRIGGER connector lets you provide an external trigger for the analyzer 8 The PROBE POWER connectors provides power for various Agilent active probes 9 The INPUT connector routes your test signal or DUT output to the analyzer s receiver Input impedance is selectable 50 ohms or 75 ohms with option 1D7 minimum loss pads 10 Use the DISPLAY hardkeys and their menus to select and manipulate trace data and to select display options for that data 11 Use the SYSTEM hardkeys and their menus to control various system functions online help plotting presetting and so on 12 Use the MEASUREMENT hardkeys and their menus to control the analyzer s receiver and source and to specify o
69. rvice office If the analyzer is mechanically damaged the integrity of the protective earth ground may be interrupted Do not connect the analyzer to power if it is damaged Check that the line voltage selector switches are set for the local line voltage The line voltage selector switches are set at the factory to match the most commonly used line voltage in the country of destination To check or change the line voltage selector switches see To change the IF section s line voltage switch and To change the RF section s line voltage switch Check that the correct line fuses are installed in the fuse holders The fuses are installed at the factory for the most commonly used line voltage in the country of destination There is one line fuse in the IF section and one line fuse in the RF section To determine if the correct line fuses are installed see To change the IF section s fuse and To change the RF section s fuse Connect the IF section to the RF section For instructions on connecting the sections see To connect the sections Using the supplied power cords plug the analyzer s IF section and RF section into appropriate receptacles The analyzer is shipped with two three conductor power cords that ground the analyzer when plugged into appropriate receptacles The type of power cable plug shipped with each analyzer depends on the country of destination 7 5 Preparing the Analyzer for Use
70. s Save Recall default disk Press nonvolatile RAM disk volatile RAM disk or internal disk Press Return To easily recall a file you may press catalog on to display the names of files stored on the disk then use the knob to scroll to the desired file Press the softkey that matches the type of data you want to recall then select a storage register if you are recalling a trace If you have not selected a file name from the catalog enter the file name Use the hardkeys which have now been remapped to represent the symbols etched to the lower right of them softkeys knob and numeric keys to type in a file name Press enter For more information on the softkeys and parameter choices display online help Caution General Tasks To format a disk Select the disk drive you want to format Press Disk Utility default disk Press the softkey corresponding to the disk drive you want to format Press Return format disk Select appropriate parameters for your disk drive disk type interleave etc Press perform format proceed You may format 3 5 inch disks in the internal disk drive They must be double sided high density flexible disks that are not write protected The analyzer may take a few minutes to format a disk depending on the type of disk and is unavailable for other tasks during that time You can damage both the disk and the drive if you attempt to eject a disk when the
71. se the source output and the channel 1 and channel 2 inputs on the IF section for network measurements Using a BNC T adapter or power splitter and BNC cables connect the analyzer s SOURCE to the CHANNEL 1 input directly and to the CHANNEL 2 input through a filter as shown in the illustration below Select the IF baseband receiver mode and initialize the analyzer Press Instrument Mode receiver IF section 0 10 MHz Press Preset Configure the analyzer to make two channel frequency response measurements Press Measurement Data freq response Vector Signal Analyzer DUT 5 2 Characterizing a Filter 4 Configure the source and measurement for a frequency response measurement Press Source source on Press source type periodic chirp Press Return bottom softkey Press level 5 Vrms Press Res BwiWindow rbw mode arb Press main window uniform Press Range channel both ch single range up down Press Average average on Press num averages 50 enter Press average type rms video Press Auto Scale 5 Start an averaged measurement Press Meas Restart The display should appear similar to that shown below To learn more about the choices you make in t
72. setting HT QAM 16 32 64 256 HT range setting OP 18 10 setup OP 7 2 setup 32 DVB QAM OP 7 8 signal creation OP 9 2 SNR HT state definitions defining HT state definitions displaying HT symbol clock adjusting HT symbol locking OP 17 8 OP 18 8 symbol rate setting HT sync patterns pre defined HT sync search OP 7 13 trellis diagram HT troubleshooting HT VSB 8 16 HT VSB example OP 7 6 GS Getting Started Guide OP Operator s Guide HT Online Help press Help key detection OP 14 12 HT about detection HT normal detector HT positive peak detector HT sample detector HT deviation FSK HT diagnostics softkey HT digital demodulation See demodulation digital disk drive setting up GS 6 2 disk drives HT about disk drives HT comparison HT copying files HT deleting files HT displaying contents of HT external disk drive HT formatting HT GPIB address external disk drive HT internal disk drive HT non volatile RAM disk HT packing a disk HT renaming files HT selecting a default disk HT using disk specifiers HT volatile RAM disk HT volatile RAM disk removing HT display HT adjusting the color HT allocating portion for programs HT blanking HT changing colors HT cleaning GS 7 19 connecting external GS 7 16 indicators HT See also traces display group hardkeys HT display points defined HT display resolution OP 14 11 OP 14 12 display state definitions OP 8 10 display digital OP 14 9 documentation HT D
73. system Press Help Display the index Press 1 Turn the knob to select the topic you want help on or for faster paging press and hold the up arrow or down arrow keys then use the knob to select a topic Display the topic Press 4 Quit online help Press Help or Press 0 The help index contains an alphabetical listing of all help topics Most topics listed in the index describe the hardkeys and softkeys but some are of a more general nature These more general topics are only available via the index or via links from related topics An example appears below the Front Panel Tour topic is only available through the index or the links not by pressing any hardkey or softkey Topic Index of Topics lat top Softkey gate window Fonts ormat disk Softkey our grids Softkey ree run Softkey trigger French softkey req counter Softkey req response Softkey i Frequency Hardkey Frequency Points You can select any topic in the index by scrolling to highlight it then pressing 4 Full Softkey BASIC display ull span Softkey z gt gate dly step Softkey gate length 5oftkey gate on off Softkey gate time Softkey gate window Softkey berman softkey goto line Softkey Prev Topic 7 Print Prev Page Index 1 Jump To Topie 4 Help On Help 5 Next Page w Quit a 1 5 Making Simple Noise Measurements This chapter shows you how to make typical noise measure
74. te GS 6 9 HT recalling HT saving HT measurement time OP 14 2 OP 14 10 OP 14 17 measurements HT continuing HT displaying meas state table HT pausing HT single stepping HT starting HT memory about memory HT capture RAM HT erasing HT for applications HT for frequency points HT for temporary math buffers HT memory limitations OP 14 19 menu HT minimum loss pad GS 7 18 mirror freq on off softkey HT mirrored spectrums OP 18 17 Mkr Val HT model number IF section GS 7 10 RF section GS 7 11 monitor connecting external GS 7 16 MSK softkey HT N NADC North American Digital Cellular HT NADC demodulation example OP 6 4 NAN meaning of HT narrowband measurements OP 13 8 network measurements GS 5 1 Network Local Area Index See LAN NO DATA definition of HT noise equivalent bandwidth OP 14 18 noise measuring OP 4 1 GS 2 1 non volatile RAM disk See disk drives normalization OP 8 4 HT numeric entry softkeys HT O offset video demod OP 7 13 offset marker See markers offset in digital demod OP 6 8 online help GS 1 1 See Help hardkey operating environment GS 7 9 GS 7 19 options installing HT options temporary HT origin offset See demodulation digital output filter on off softkey HT output z softkey source HT OV1 or OV2 definition of HT oven frequency reference GS 7 7 OVEN REF OUT connector HT over LED HT description of HT using to set the range HT overlap processing HT P p
75. ther measurement parameters 13 The REMOTE OPERATION hardkey and LED indicators allow you to set up and monitor the activity of remote devices 14 Use the MARKER hardkeys and their menus to control marker positioning and marker functions 15 The knob s primary purpose is to move a marker along the trace But you can also use it to change values during numeric entry move a cursor during text entry or select a hypertext link in help topics 16 Use the Marker Entry key to determine the knob s function With the Marker indicator illuminated the knob moves a marker along the trace With the Entry indicator illuminated the knob changes numeric entry values 17 Use the ENTRY hardkeys to change the value of numeric parameters or to enter numeric characters in text strings 18 The optional CHANNEL 2 input connector routes your test signal or DUT output to the analyzer s receiver Input impedance is selectable 50 ohms 75 ohms or 1 megohm For ease of upgrading the CHANNEL 2 BNC connector is installed even if option AY7 second input channel is not installed For more details on the front panel display the online help topic Front Panel See the chapter Using Online Help if you are not familiar with using the online help index iti This page left intentionally blank iv Saftey Summary The following general safety precautions must be observed during all phases of operation of this instrument Fail
76. urce Press Sweep single 4 Activate a different trace as a phase display Press Display 2 grids Press B Measurement Data spectrum select ch1 with a 2 channel analyzer Press Data Format phase wrap 5 Start a single sweep Press Pause Single 4 2 Measuring Relative Phase 6 Activate two traces Press Shift A two Active Trace LEDs are now turned on 7 Turn on marker coupling and zero the offset marker on the carrier Press Marker couple mkrs on Press Shift Marker to place the marker on the carrier peak Press Shift Marker to zero the offset marker 8 Use the search marker to measure the phase of the two largest sidebands relative to the carrier Press Marker Search next peak and note the phase displayed for the lower trace Press next peak again and note the phase SINGLE SWEEP PAUSED TRACE A Chi Spectrum A Offset 24 750 Hz 16 903 dB dEr LogMag Carrier Sidebands 6 gt 0 degrees phase Spon loo kHz The phase values vary with each sweep but for an AM signal the average phase of the sidebands is equal to the carrier phase enter 5 MHz 4 3 Measuring Relative Phase To measure the relative phase of an PM signal Continue from To measure the relative phase of an AM signal Replace
77. ure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument Agilent Technologies Inc assumes no liability for the customer s failure to comply with these requirements GENERAL This product is a Safety Class 1 instrument provided with a protective earth terminal The protective features of this product may be impaired if it is used in a manner not specified in the operation instructions All Light Emitting Diodes LEDs used in this product are Class 1 LEDs as per IEC 60825 1 ENVIRONMENTAL CONDITIONS This instrument is intended for indoor use in an installation category II pollution degree 2 environment It is designed to operate at a maximum relative humidity of 95 and at altitudes of up to 2000 meters Refer to the specifications tables for the ac mains voltage requirements and ambient operating temperature range BEFORE APPLYING POWER Verify that the product is set to match the available line voltage the correct fuse is installed and all safety precautions are taken Note the instrument s external markings described under Safety Symbols GROUND THE INSTRUMENT To minimize shock hazard the instrument chassis and cover must be connected to an electrical protective earth ground The instrument must be connected to the ac power mains through a grounded power cable with the ground wire firmly connected to an ele
78. ve phase of an PM signal 4 4 5 Characterizing a Filter To set up a frequency response measurement 5 2 To use the absolute marker 5 4 To use the relative marker 5 5 To use the search marker 5 6 To display phase 5 7 To display coherence 5 8 xi 6 General Tasks To set up peripherals 6 2 To print or plot screen contents 6 3 To save data with an internal or RAM disk 6 4 To recall data with an internal or RAM disk 6 5 To format a disk 6 6 To create a math function 6 7 To use a math function 6 8 To display a summary of instrument parameters 6 9 Inspection and Installation 7 Preparing the Analyzer for Use Preparing the Analyzer for Use 7 2 To do the incoming inspection 7 5 To connect the sections 7 7 To install the analyzer 7 9 To change the IF section s line voltage switch 7 10 To change the RF section s line voltage switch 7 11 To change the IF section s fuse 7 12 To change the RF section s fuse 7 13 To connect the analyzer toa LAN 7 14 To connect the analyzer to a serial device 7 15 To connect the analyzer to a parallel device 7 15 To connect the analyzer to an GPIB device 7 16 To connect the analyzer to an external monitor 7 16 To connect the optional keyboard 7 17 To connect the optional minimum loss pad 7 18 To clean the screen 7 19 To store the analyzer 7 19 To transport the analyzer 7 20 If the IF section will not power up 7 21 If the RF section will not power up 7 22 If the analyzer s stop frequency is 10 MHz 7 2

Agilent Technologies 89441A Stereo System User Manual

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