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HP 8591C User's Manual

1. a AAAA AAAA RPM ONAA ARAARA AARAA AAAA RAG AE SANAE OOE EO OURAN tt Getting Started 3 21 Quick Tour Improving Accuracy with Self Calibration Routines Calibrating the Analyzer The cable TV analyzer frequency and amplitude seif calibration routines are initiated by the CAL FREQ amp AMPTD softkey in the menu located under the CR key l To calibrate the instrument connect the cable TV analyzer CAL OUT to the INPUT 75 Q connector with an appropriate cable NOTE A low loss cable should be used for accurate calibration Use the 75 cable shipped with the cable TV analyzer 2 On the cable TV analyzer press CAL and CAL FREQ amp AMPTD Cal signal not found will be displayed if CAL OUT is not connected to the cable TV analyzer input The frequency and amplitude self calibration functions take approximately 5 minutes to finish 9 minutes with Option 130 at which time the internal adjustment data is in working RAM 3 To save this data in the area of cable TV analyzer memory that is saved when the cable TV analyzer is turned off press CAL STORE NOTE lo i interrupt the calibration routines started by CAL FREQ CAL AMPTD or CAL FREQ amp AMPTD press PRESET CAL More 3 of 4 and CAL FETCH CAL FETCH retrieves the previous correction factors Improperly interrupting the self calibration routines may result in corrupt correction factors llf this occurs press
2. Getting Started 3 27 Memory Card Insertion and Battery Replacement Use the following information to ensure that the memory card is inserted correctly Improper insertion causes error messages to occur but generally does not damage the card or instrument Care must be taken however not to force the card into place The cards are easy to insert when installed properly 1 Locate the arrow printed on the card s label 2 Insert the card with its arrow matching the raised arrow on the bezel we around the card insertion slot See Figure 3 8 puI22 Figure 3 8 Inserting the Memory Card 3 Press the card into the slot When correctly inserted about 19 mm 0 75 in of the card is exposed from the slot 3 28 Getting Started Quick Tour Memory Card Insertion and Battery Replacement Changing the Memory Card Battery It is recommended that the memory card battery be changed every 2 years The battery is a lithium commercial CMOS type battery part number CR 2016 or HP part number 1420 0383 NOTE The minimum lifetime of the battery under ordinary conditions is more than 2 years The date that the memory card battery was installed is either engraved on the side of the memory card or written on a label on the memory card If the memory card does not have a label with the date that the battery was installed use the date code engraved on side of the
3. X D M AAAA aaa Quick Reference 4 93 Softkey Descriptions Cable TV Analyzer Functions REGISTER displays the status of state and trace registers in analyzer ee LS memory Key Access or CATALOG STATES catalogs all of the states stored on the memory card Key Access or CATALOG TRACES catalogs all of the traces stored on the memory card Key Access or CATALOG VARIABLS catalogs all of the variables saved in analyzer memory Key Access or CENTER FREQ activates the center frequency function to allow the selection aoe of frequency that will be at the center of the screen Key Access RUX CTRL MERS USER or CF STEP AUTO CMAN changes the step size for the center frequency function Key Access or FREQUENCY Change Prefix allows you to enter a prefix that can be used for saving and recalling data to and from the memory card and for cataloging by the prefix The prefix can be from one to seven characters long The longer the prefix the shorter the register number must be The total length of the prefix and register number cannot exceed eight characters The prefix can be any character however the underscore should not be the first character of the prefix Key Access CONFIG GEFIN RECALD or SAVE J A A 44AAA A A A A A 4 24 Quick Reference Change
4. Softkey Descriptions Cable TV Analyzer Functions The plotting process is similar to the printing process On the spectrum analyzer press CONFIG Plot Config To obtain a plot press CONFIG COPY DEV PRNT PLT so that PLT is underlined then Plot Config Plt Port Config Use BAUD RATE to change the baud rate of the analyzer if necessary Press CONFIG Plot Config Plt Port Config PLT PORT SER PAR so that SER is underlined then press BAUD RATE For Option 041 use PLOTTER ADDRESS to change the HP IB address for the plotter if necessary Press CONFIG Plot Config Plt Port Config PLT PORT HPIB PAR so that HPIB is underlined then press PLOTTER ADDRESS With PLTS PG 1 2 4 you can choose a full page half page or quarter page plot Press PLTS PG 1 2 4 to underline the number of plots per page desired If two or four plots per page are chosen a softkey function is displayed that allows you to select the location of the plotter output on the paper If two plots per page are selected PLT LUC is displayed If four plots per page are selected PLT _ LOC _ is displayed Press the softkey until the rectangular marker is in the desired section of the softkey label The upper and lower sections of the softkey label graphically represent the position of the page where the plotter output will be located NOTE The HP 7470A Plotter does not support two plots per page output 4 you use an HP 74
5. Quick Tour Getting Acquainted with the HP 8591C Cable TV Analyzer 1 EXT ALC INPUT allows the use of an external detector or power meter for automatic leveling control of the tracking generator for Option OTI only TV TRIG GUTPUT TTL provides TV trigger output using TTL and negative edge triggering Standard except for ption 701 E GATE TRIGGER INPUT TTL accepts a TTL signal which acts as the gate trigger for Qoton 107 only TV MON OUTPUT connector provides e connection for an external television monitor 5 EARPHONE connector provides a connection for an earphone jack instead of using the interna speaker GATE GUTPUT TTL provides a TTL signal which indicates gate status when the when the gate is in edge trigger mode for Option 107 anly 7 EXT REF IN accepts an external frequency source to provide the 10 MHz 2 to 10 d amp m frequency reference used by the cable TV analyzer E 10 MHz REF OUTPUT provides a 10 MHz 0 dBm minimum time based reference signal 9 VOLTAGE SELECTOR adapts the unit to the power source 115 V or 236 V MONITOR QUTPUT drives an external monitor with a signal spectrum analyzer display that has a 15 7 kHz horizontal synchronizing rate EJ Power input is the input for the line power source AUX INTERFACE provides a nine pin D subminiature connector for control of external devices 13 interface connectors interfaces for RS 232 and parallel istandard and HP IB and parallel Opti
6. MARKER amp NEXT PK NIGHT NEXT PK LEFT More iof 2 SPAN 20 0 MM2 VON 30 KM SAP 20 0 mec Figure 3 7 Reading the Amplitude and Frequency Improving Accuracy with Self Calibration Routines Data from the self calibration routine is necessary for cable TV analyzer operation Executing the self calibration routine regularly ensures that the cable TV analyzer is using current calibration data that improves the cable TV analyzer frequency and amplitude accuracy Press the key to view the self calibration routine menus The last softkey on this menu labeled More 1 of 4 provides access to additional self calibration functions For more detailed information on the self calibration softkeys refer to Chapter 7 of the EP 8591C Cable TV Analyser Spectrum Analyzer Reference User s Guide The self calibration routines add correction factors to internal circuitry The addition of the correction factors is required to meet frequency and amplitude specifications When the correction factors are added to internal circuitry CORR corrected appears on the left side of the screen Warmup Time In order for the cable TV analyzer to meet its specifications allow the cable TV analyzer to warm up for 30 minutes alter being turned on before attempting to make any calibrated measurements Be sure to calibrate the cable TV analyzer only after it has met operating temperature conditions
7. HP 8591C Cable TV Analyzer HP 8591C Cable TV Analyzer HP part number 08591 90130 Supersedes 08591 90106 Printed in USA June 1995 Notice The information contained in this document is subject to change without notice Hewlett Packard makes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Hewlett Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material Regulatory Information The regulatory information is in the calibration guide for your analyzer Copyright Hewlett Packard Company 1993 1994 1995 Al Rights Reserved Reproduction adaptation or translation without prior written permission is prohibited except as allowed under the copyright laws 1400 Fountaingrove Parkway Santa Rosa CA 95403 1799 USA Warranty This Hewlett Packard instrument product is warranted against defects in material and workmanship for a period of one year from date of shipment During the warranty period Hewlett Packard Company will at its option either repair or replace products that prove to be defective For warranty service or repair this product must be returned to a service facility designated by HP Buyer shall prepay shipping charges to HP and HP shall pay shipping
8. The knob allows continuous change of functions such as center frequency reference level and marker position It also changes the values of many functions that change in increments only Clockwise rotation of the knob increases values For continuous changes the extent of alteration is determined by the size of the measurement range the speed at which the knob is turned does not affect the rate at which the values are changed The knob enables you to change the center frequency start or stop frequency or reference level in smooth scrolling action The smooth scrolling feature is designed to move the trace display to the latest function value as the knob is turned When either center frequency or reference level is adjusted the signal will shift right or left or up or down with the rotation of the knob before a new sweep is actually taken An asterisk is placed in the message block the upper right hand corner of the cable TV analyzer display to indicate that the data on screen does not reflect data at the current setting 3 8 Getting Started Number Units Keypad Step Keys Quick Tour Getting Acquainted with the HP 8581C Cahle TV Analyzer NOTE When using the knob to change frequency or ampiitude settings the trace data is shifted Therefore when using MAX HOLD A MAX HOLD B or MIN HOLD C moving the center frequency with the knob will not simulate a drifting signal The number u
9. provides a calibration signal of 300 MHz at 29 dBmV VOL INTEN The VOL INTEN knob changes the brightness of the display and the volume of the internal speaker Provides the input fer the built in Television tuner Option Memory card reader reads from or writes to a memory card 18 RF OUT 752 supplies a source output for the butin tracking generator For Option G11 the cutput frequency range of the cable TY analyzer s 1 MHz te 1 8 Ghz 1 LINE turns the instrument on and eff Getting Started 3 5 Quick Tour Getting Acquainted with the HP 8591 Cable TV Analyzer Rear Panel Features The following section provides a brief overview of rear panel features illustrated in Figure 3 3 Refer to HP 8591C Cable TV Analyzer Spectrum Analyser Reference User s Guide for more information about these features OO QOO C EARPRONE j x Tv TAIG GATEATRIGQER GATE ovre ALT oulPy oUTPuT FA foo KS i ima KO KOE j Ret WueA Se mA TV RER OUTPUT AUA AUX IF SWEEP HIGH SWEEP VIDEO r OUTPUT N OUT CT QUTEUT OUTPUT SB EN QN AN Gy A A t CS n Ce Veo Nu x A i p TRIG TETE AUX INTERFACE NP YET FFE ExT SEN os C YBOARD jG iO Q Oi X AS id amaan e one B 58 VE E 3 eC Je 5 iD mum Qi d prr md er em PaRa EN 9 0O00 O OPTiON O41 Figure 3 3 Rear Panel Feature Overview 3 6 Getting Started
10. DISPLAY 4 20 Option O11 only performs the tracking peak self calibration The analyzer should be amplitude calibrated by pressing CAL AMPTD prior to using the CAL TRK GEN function Connect the tracking generator output to the analyzer input before pressing CAL TRK GEN Key Access accesses the softkey menu that allows you to catalog format and delete data from a memory card Key Access CONFIG recalls into analyzer memory a display image saved on the memory card It does not recall the associated instrument state but the restored display can be viewed and copied Before recalling a display that was saved under a prefix other than the current prefix change the current prefix to the prefix used when the display was saved Key Access RECALL recalls into the analyzer memory a downloadable program DLP saved on the memory card Before recalling data that was saved under a prefix other than the current prefix change the current prefix to the prefix used when the data was saved Key Access RECALL Quick Reference CARD STATE C ard Trace CARRIER LVLEFRQ CARRIER NOISE CATALOG ALL AMP COR Softkey Descriptions Cable TV Analyzer Functions recalls into analyzer memory a state saved on the memory card CARD STATE also displays the time and date when the state data was stored Before recalling a state that was saved under a prefix other than the current prefix change the cu
11. Mic M i Mare of 2 CSP LIME ON OFF More 2 of 2 Quick Reference 0 9 Key Menus T Cahle TV Analyzer Functions AIR IRC FHRCT R CH G CNTR FRO CH SPAN j BTS TST CHML FREQ OFFSET FREQ OFFSET hannel Tuning AMP GAIN EXT AMP NZ FIG TTL PWR iNPUT Menu Pray PAUSE YES NO Prev Meny M n TRUM ANALYZER Setup anne CYCLES MSh LE TV ANALYZER CYCPESZMSKIT TV RECEIVER CHANNEL MEAS SYSTEM MEAS MAIN MENU VIEW CO CHNL LiSTEN OFF LISTEN AT MARKER DEMOD AM FM 100 kHz RES BW iz RES BW MU MAIN MENU NEXT CHANNEL Meses i SCRAMBLD YES QH FREQ FREG MAIN MENU A SEE NEXT MENU 5 10 Quick Reference SEE PREVIOUS MENU CROSSMOD CSO CTB GATE AVERAGE GN MORE More MAIN MENU RE ENTER C N TEST TOTL PWR INPUT MAIN MENU Key Menus Cable TV Analyzer Functions STEP ON TN RNG SET MORE MAIN MAIM MENU MAIN MENU GATE ON OFF AVERAGE ON OFF 200M 4 MEASURE NEXT BEAT WINE SEARCH CONTINUE p More MAIN ME GO TO CSO C MAIN ME GATE ON OFF RESTART AVERAGING ZOOM MEASURE NEXT BEAT STEP DOWN More MAIN MERU MORE Prev Menu ENTER Y TOTU PWR INPUT MAIN MENU Prey Menu Quick Reference Key Menus Cable TV Analyzer Function
12. ON OFF activates a marker that indicates the time from the gate trigger to the current marker position The trigger marker is in the time domain window of the gate utility It is turned off when the menu is exited or if another active function is activated Key Access SWEEP TTL PWR Q INPUT allows you to measure the total power at the input of the i analyzer This function is used in conjunction with an external preamplifier By measuring the total input power you ensure that the preamplifier s specifications are not exceeded which could contribute to distortion products when measuring CSO CTB Press CABLE TV ANALYZER Setup Analyzer Input to access TTL PWR INPUT Key Access CABLE TV ANALYZER ny on LINE 4 selects the line number of the video picture field The values 4 128 Quick Reference TV RECEIVER TV Standard TV SYNC NEG POS Softkey Descriptions Cable TV Analyzer Functions allowed are 1 to 1012 sets the TV line number to 17 Key Access allows you to access the TV receiver mode In this mode you can view a TV picture and listen to the sound simultaneously by pressing CHANNEL SELECT entering a TV channel number then pressing PIX amp SND ON OFF To exit this mode press any softkey Press to access TV RECEIVER Front Panel Access Key MODE allows the analyzer to trigger on the standard video formats NTSC PAL PAL M or SECAM L Key Access TRIG selects the polarity o
13. to be output on the page This softkey function appears only if two or four plots per page are selected when PLTS PG r D 4 is pressed Key Access CONFIG allows the softkey labels to be plotted along with the analyzer display This function operates when the key is used in a plot configuration The PLT MENU ON DFF function is set to OFF when DEFAULT CONFIG is pressed Key Access Option 041 or 043 only accesses the menus used by Option 041 HP IB and Parallel Interface and Standard Option 043 RS 232 and Parallel Interface to select plotter options See the key for more information Front Panel Key Access Option 041 only allows you to select between HP IB or parallel plotter ports allows you to select between serial or parallel plotter ports The BAUD RATE softkey appears in this menu only when serial is selected Quick Reference PLTS PG 424 PLT gt LJT ON OFF POINT Softkey Descriptions Cable TV Analyzer Functions allows you to plot a full page half page or quarter page output Selecting two plots per page requires a plotter that has the rotate command RO The plotter will be set to a full page output when DEFAULT CONFIG is pressed Key Access allows you to plot a full page half page or quarter page output to an HP LaserJet printer This softkey can be accessed by pressing CONFIG then Plot Config Key Access CONFIG specifies a limit value
14. 4 100 reference level offset 4 100 reference measurement 4 121 reference trace 4 103 REF LVL 4 100 REF IVL OFFSET 4 100 relative limit line type 4 64 remote command dispose all 4 48 4 49 4 50 front panel execution 4 51 remote operation 4 29 we ges RES BW AUTO MAN 4 100 resolution bandwidth 4 100 resolution bandwidth coupling 4 15 gate utility 4 33 Index 22 E S resolution of marker counter 4 28 results to screen 4 43 RF OUT 75 Q 3 4 ROM card cataloging 4 22 RPG knob 3 6 3 8 RPG TITLE 4 101 RS 232 interface connector 3 7 sampie detection mode 4 40 4 73 SAVE 3 4 4 101 SAVE AMP COR 4 102 save current display 4 40 save current state memory card 4 116 State register 4 116 saved analyzer state 4 63 SAVE EDIT 4 102 SAVE LIMIT 4 102 save lock on MEM LOCKED 4 73 SAVE TO INT MEM 4 102 E BT 4 103 Save TstPlan 4 104 saving a test plan in analyzer memory 4 102 saving DLPs from analyzer memory to card 4 10 saving key definitions from analyzer memory to card 4 10 saving to a memory card 4 127 saving to analyzer memory 4 127 SAV LOCK ON OFF 4 101 SOALE LOG LIN 4 104 screen annotation 3 11 14 on or off 4 14 screen characters 4 60 4 76 4 117 4 137 screen data output 4 30 screen graticule 4 60 screen send results to 4 43 Screen text font guide conventions 1 5 Screen title 4 28 characters 4 8 Clearing 4 27 RPG TITLE 4 1
15. 4 95 PROBE PWR 3 4 program cataloging 4 21 program DLP editor 4 46 program editing and creating 4 46 programming command dispose all 4 48 4 49 4 50 front panel execution 4 51 PRT MENU ON OFF 4 95 pulse edge definition 4 48 Puise Param 4 95 pulse parameters clearing 4 27 gate length 4 34 PRI 4 34 4 48 pulse width 4 33 4 48 reference edge 4 48 time gate utility 4 95 pulse repetition interval 4 48 pulse width 4 48 PURGE AMP COR 4 96 PURGE LIMITS 4 96 PWR SWP ON OFF 4 97 Index 21 R RAM card cataloging 4 22 recalling test data 4 98 ratio video bandwidth to resolution bandwidth 4 132 real time clock 4 125 set date 4 108 set time 4 108 time and date display 4 125 rear panel battery information label 3 32 rear panel features 3 6 8 RECALL 3 4 4 97 RECALL AMP COR 4 97 Recall Data 4 98 RECALL FRM ORD 4 98 RECALL FRM INT 4 99 RECALL FRM INT softkey 4 99 recalling a display image from the memory card 4 20 recalling a DLP from the memory card 4 20 recalling a state from the memory card 4 21 recalling a test plan from analyzer memory 4 99 recalling a trace from analyzer memory 4 63 recalling a trace from the memory card 4 21 recalling test data from a RAM card 4 98 t H RECALL LIMIT 4 100 Tee i Recall TstPlan 4 100 recelver mode select 4 129 reference 4 121 reference connector 2 12 reference detector 10V 4 6 10V 4 6 2V 4 6 ground 4 60 reference level
16. CONFIG allows you to set the date of the real time clock Enter the date in the YYMMDD format using the number keypad and press ENTER Valid year YY values are 00 through 99 Valid month MM values are from 01 to 12 and valid day values are from 01 to 31 Key Access allows you to set the time of the real time clock Enter the time in 24 hour HHMMSS format using the number keypad and pressing ENTER Valid hour HH values are from 00 to 23 Valid minute MM and second SS values are from 00 to 59 Key Access CONFIG 4 108 Quick Reference Setup Setup Softkey Descriptions Cable TV Analyzer Functions accesses the menu used to set up parameters specific to the power measurements If another front panel key is pressed exiting the power menus press the MEAS USER key twice to return to the last power menu that was being used Key Access MEAS USER For Cable TV Analyzer allows you to access the softkeys used to set up defaults for channel tuning configuration input configuration non interfering RF and video measurement configurations and channel to test for system beats The channel tuning configur ation softkeys include STD AIR IRC HRC T USR CH Q CNTR FRQ and USR CH O SPAN The analyzer input configuration softkeys include EXT PAD YES NO 500 spectrum analyzers only EXT AMP YES NO and TTL PWR INPUT The non interfering RF and video measurement configuration softke
17. Cable TV Analyzer Functions changes the analyzer settings so that the amplitude at the active marker becomes the reference level Key Access MKR changes the start frequency so that it is equal to the frequency of the active marker This moves the active marker to the left edge of the display Key Access changes the stop frequency so that it is equal to the frequency of the active marker This moves the active marker to the right edge of the display Key Access MKR turns off all of the markers including markers used for marker track and demodulation Marker annotation is also removed Key Access keeps the active marker at the requested amplitude on the screen Key Access activates a single frequency marker at the center frequency on the active trace if an on screen marker is not already displayed If there is an on screen marker before the MARKER NORMAL function is enabled a frequency marker is enabled at the position of the first marker Key Access MKR Quick Reference 4 7 Softkey Descriptions Cable TV Analyzer Functions MARKER HOLD A MAX HOLD B Max MIR MEAS OFF MEAS USER 4 72 Option 107 only activates a marker in the gate utility Key Access SWEEP maintains the maximum level for each trace point of trace A Updates each trace point if a new maximum level is detected in successive sweeps Key Access TRACE maintains the maximum level for each trace point of
18. Index 11 FFT marker frequency 4 70 FFT MARKERS 4 54 FFT measurement 4 29 4 110 FFT Menu 4 54 l FFT OFF 4 54 FFT STOP FREQ 4 55 fine focus control 3 10 FINE TUNE DAC 4 4 4 55 firmware date 2 13 fixed limit line type 4 64 FLAT 4 55 flatness factory defaults 4 62 flatness correction constants 4 44 4 55 Flatness Data 4 9 4 55 FM COIL DRIVE 4 4 4 56 FM DEV 4 56 FM GAIN 4 4 4 56 FM OFFSET 4 5 4 56 FM SPAN 4 5 4 56 FORMAT CARD 4 56 format date 4 35 Fourier transform See also fast Fourier transform 4 54 Fourier transform measurement 4 54 FREE RUN 4 57 FREQ DIAG 4 5 4 57 FREQ DISC NORM OFF 4 57 FREQ OFFSET 4 57 frequency stop 4 116 FREQUENCY 3 4 3 17 4 57 frequency and amplitude self calibration routine 2 14 4 19 frequency demodulation 4 39 frequency offset 4 57 frequency self calibration 4 19 frequency span 4 111 front panel execution of programming commands 4 51 front panel features 3 4 5 FRQ DISC NORM OFF 4 5 function coupling 4 15 function operations demodulate the aural carrier 4 65 functions listen off 4 65 listen on 4 65 fuse 2 8 fuse holder 3 7 ERE Index 12 G H gain internal analyzer 4 13 gain amplifier 4 52 gate coupling functions 4 37 gate control 4 38 edge or level triggering 4 58 Gate Control 4 58 GATE CTL EDGE LVL 4 58 gate definition 4 38 GATE DELAY 4 58 GATE LENGTH 4 58 GATE ON O
19. Key Access SWEEP Option 107 only turns on or off the gate the time gated analyzer capability The gate can be turned on outside or from within the gate utility The gate utility makes it easier to set up and manipulate the gate The gating function allows you to make carrier to noise in channel frequency response and composite second order CSO distortion measurements without turning off modulation Option 107 required Key Access Quick Reference GATE UTILITY Softkey Descriptions Cahle TV Analyzer Functions Option 107 only accesses the softkey functions used for the time gated analyzer capability It creates related time domain and frequency domain windows to set up the time gate and make measurements Note that if the gate utility menus are exited by pressing one of the front panel keys they may be re entered by pressing twice Some analyzer functions are altered or are not available when the gate utility is active See Table 4 4 From within the gate utility press EXIT UTILITY to retum to normal analyzer operation Press twice and EXIT UTILITY to return to the gate utility and then exit it properly Tabie 4 4 Commands Altered Not Available within the Gate Utility Command Description of Change Ye AM measurement function is not available Adjacent channel power Calibration Channel power measurement function is not available ne calibration functions can be
20. Preparing for Use Preparing Your Gable TV Analyzer far Use Step 5 Turn on the cable TV analyzer for the first time When you turn the cable TV analyzer on for the first time you should perform frequency and amplitude self calibration routines to generate correction factors and indicate that the unit is functioning correctly The cable TV analyzer should be allowed to warm up for 30 minutes before performing the self calibration routines See When Is Self Calibration Needed in Chapter 3 for helpful guidelines on how often the self calibration routines should be performed Perform the following steps 1 Ensure the reference connector is connected between the 10 MHz OUTPUT and EXT REF IN rear panel connectors See Figure 2 3 REFERENCE CONNECTOR looo E e o C3 s pul2Gel Figure 2 3 Reference Connector If you wish to use an external 10 MHz source as the reference frequency disconnect the reference connector from the rear panel and connect an external reference source to the EXT REF IN connector on the rear panel NANA A ere rR INH MANA teen TEAR Ahsan a RH 2 12 Getting Started Preparing for Use Preparing Your Cable TV Analyzer for Use 2 Press LINE After a few seconds the screen displays the firmware revision date in the YYMMDD format For example 930522 indicates May 22 1993 The baud rate RS232 XXXX is also displayed If your cable TV analyzer is equipped with Option 021 H
21. TENER Goa an HRS SW 300 x2 INPUT 250 STEP ht WH2 1 9 GHI VERSER UR f e Y Oy f Y ai H OQ C we puti c Figure 3 2 Front Panel Feature Overview 3 4 Getting Started Quick Tour Getting Acquainted with the HP 8591C Cable TV Analyzer is the space on the sereen that indicates the active function NE Active function block Message block is the space on the screen where MEAS UNCAL and the asterisk i appear are the annotation on the screen next to the unlabeled keys are the unlabeled keys next te the sergen FREQUENCY L SPAN are the three large dark gray keys that activate the primary cable TV and AMPLITUDE analyzer functions and access menus cf related functions In INSTRUMENT STATE functions affect the state of the entire cable TV analyzer COPY prints or plots screen data CONTROL functions access menus thet allow yeu to adiust the resolution bandwidth adjust the sweep time store and manipulate trace data and control the instrument display MARKER functions control the markers read out frequencies and amplitudes along the cable TV analyzer trace automatically locate the signals of highest ampiftude and keep a signal at the marker position in the center of the screen DATA keys STEP keys and allow you to change the numeric value of an active function is the signal input for the cable TV anelyzer provides power for high impedance ac probes or other accessories
22. Title CHANNEL BANDWDTH CHANNEL POWER CHANNEL SELECT CHANNEL SPACING Soitkey Descriptions Cahle TV Analyzer Functions allows you to write a 53 character screen title across the top of the screen Key Access or allows the user to enter the channel bandwidth to set up the analyzer when using the measurement functions under the Power Menu softkey Key Access MEAS USER measures the power and power spectral density in the channel bandwidth specified by the user Key Access MEAS USER a function used in conjunction with measurements It sets up the analyzer state for cable TV tests lets you select a specific channel number and centers the specific channel on the analyzer screen The channel is selected based on one of the five channel formats available in the Setup menu as described in Chapter 2 of the HP 8591C Cable TV Analyzer Cable TV Measurements User s Guide STD AIR HRC IRC or T Key Access CHANNEL MEAS or TV RECEIVER allows the user to enter the channel spacing to set up the analvzer when using the measurement functions under the Power Menu softkey Key Access Quick Reference 4 25 Softkey Descriptions Cahle TV Analyzer Functions Tuning CLDI 4 26 allows you to select the channel tuning configuration for the channels in the test plan The channel tuning configurations that can be selected are as follows STD For a standard channel format AIR For off the air ch
23. erased by ERASE MEM ALL Key Access SAVE accesses softkey menus that allow you to store state data trace data limit line tables and amplitude correction factors on a memory card or in analyzer memory The SAVE function also allows you to save state data trace data limit line tables arnplitude correction factors and program data on the memory card In addition pressing accesses the softkey menus used to catalog the saved data in analyzer memory or on the memory card Quick Reference 4 101 Softkey Descriptions Cable TV Analyzer Functions SAVE SAVE EDIT SAVE LIMIT SAVE TO INT MEM saves the current amplitude correction factors table to the current mass storage device analyzer memory or memory card Key Access Refer to the HP 8590 E Series and L Series Spectrum Analyzers and HP 8591C Cable TV Analyzer Programmer s Guide for more information passes the text from the DLP editor memory through the parser to execute as analyzer commands Key Access or saves the current limit line tables in the current mass storage device analyzer memory or memory card Key Access allows you to save the current test plan in analyzer memory Saving a test plan overwrites any previously saved test plan of the same test plan number Up to five test plans can be saved in analyzer memory The test plans are saved in nonvolatile analyzer memory in trace registers 6 through 10 The ch
24. length GATE LENGTH 4 58 level triggering gate control 4 58 limit lines cataloging 4 22 delete segment 4 38 displaying 4 65 edit done 4 44 edit lower table 4 45 edit mid delta amplitude 4 45 edit table 4 45 edit upper and lower tables 4 45 4 46 edit upper table 4 45 a eC vy Index 14 fixed and relative 4 64 flat type 4 55 point 4 87 purge 4 96 recall table 4 100 save table 4 102 select amplitude 4 105 select delta amplitude 4 105 select frequency 4 106 select frequency or time 4 65 select lower amplitude 4 106 select middle amplitude 4 106 select segment 4 106 select time 4 106 select type 4 107 select upper amplitude 4 107 slope type 4 111 testing 4 66 Limit Lines 4 64 LIMIT LINES 4 64 LIMITS FIX REL 4 64 LIMITS FRQ TIME 4 65 LINE 4 65 linear scale 4 104 LINE front panel 3 4 LINE switch 3 4 line voltage selector switch 2 6 LISTEN OFF 4 65 LISTEN ON 4 65 list of markers 4 75 list of peaks 4 83 LMT DISP Y N AUTO 4 65 LMT TEST ON OFF 4 66 LOAD FILE 4 66 LOCAL 4 29 LOCAL hardkey 4 66 local operation 4 29 4 66 location code range 4 47 lock internal state and trace registers 4 101 log scale 4 104 lower limit line editing 4 45 Index 15 M MAIN COIL DR 4 5 4 67 Main Menu t me gate utility 4 67 MAIN SPAN 4 5 4 67 making a measurement 3 17
25. minimum hold 4 72 recail trace B from internal 4 99 save trace B to internal memory 4 103 tests clear all 4 27 third order intercept measurement 4 126 THRESHLD ON OFF 4 125 threshold line 4 125 Time Date 4 125 TIMEDATE ON OFF 4 125 3 A EE EET Index 27 Timed Measure 4 122 time domain window definition 4 38 gate utility 4 38 time gate definition of 4 38 delay 4 58 gate on off 4 58 length 4 58 triggering 4 58 time gate utility 4 59 coupling 4 37 delay sweep 4 117 entering 4 58 exit 4 51 marker on 4 72 pulse parameters 4 95 time interval maximum time interval 4 122 TIME INTERVAL 4 122 time window resolution bandwidth 4 124 sweep time 4 124 TODAY S DATE 4 123 TODAY S TIMEDATE 4 124 TOI ON OFF 4 126 total power input 4 128 trace blank trace A 4 17 blank trace B 4 17 blank trace C 4 17 clear write trace A 4 27 clear write trace B 4 27 clear write trace C 4 28 move trace B into C 4 16 A B 4 7 A B A 4 7 A C 4 7 B DL B 4 16 view mode 4 133 TRACE 4 126 trace A maximum hold 4 72 TRACE A 4 126 TRACE ABC 4 126 trace B maximum hold 4 72 TRACE B 4 126 trace C Index 28 arret neat m ta a a a a e S 7 3 3 a a VAI P t Pa RA minimum hold 4 73 TRACE C 4 126 trace modes 3 13 3 14 trace number 4 99 trace register 4 103 trace registers locking 4 101 Trace Card 4 1
26. picture field and accesses the softkey menu used to select the line number of the video picture field and the type of video picture frame Key Access Quick Reference SYNC NRM NTSC SYNC NRM PAL SYS BTS TST CH Softkey Descriptions Cahle TV Analyzer Functions changes the rear panel MONITOR output between normal internal monitor horizontal and vertical synchronization constants or the NTSC video compatible format Key Access CONFIG changes the rear panel MONITOR output between normal internal monitor horizontal and vertical synchronization constants or the PAL video compatible format Key Access CONFIG allows you to select a channel to perform system beats testing The default is channel 4 If YES is selected after selecting Measure Now System beats will be measured in the channel specified by SYS BIS TST CH The results are displayed on the first page of the measurement data System beats testing is selected independently of the test pian and is not stored with the test plan The analyzer retains the channel selection even when power is turned off until a new selection is made Pressing CABLE TV ANALYZER Setup accesses SYS BTS TST CH Key Access CABLE TV ANALYZER Quick Reference 4 119 Softkey Descriptions Cahle TV Analyzer Functions SYSTEM FRQ RESP initiates the System Frequency Response measurement VES NUR Accesses the system measurement mode When the analyzer
27. 1 Screen Annotation 3 2 Screen Annotation for Trace Trigger and Sweep Modes j 4 1 Commands Not Available with Analog ioa ion Contents 4 2 Default Configuration Values Compatibility of FFT with Other Functions Commands Altered Not Available within the Gate Utility Model Specific Preset Conditions Common Preset Conditions Preset Conditions for All Models Functions That Exit the Windows Display Format Quick Reference About This Guide About This Guide Welcome to the HP 8591C Cable TV Analyser Getting Started and Quick Reference Guide This guide is divided into two basic sections Getting Started Chapter 1 Chapter 2 and Chapter 3 instruct you how to prepare the cable TV analyzer for use and introduce you to the cable TV analyzer and its features Quick Reference Chapter 4 and Chapter 5 provide you with a quick reference for commonly used functions of the HP 8591C Cable TV Analyzer Refer to the HP 8591C Cabie TV Analyzer Cable TV Measurements User s Guide and HP 8591C Cable TV Analyzer Spectrum Analyzer Reference User s Guide for more detailed information 1 2 Getting Started J i Mes Other HP 8591C Cable TV Analyzer Documentation In addition to this guide other printed guides will help you learn about the HP 8591C Cable TV Analyzer and locate information quickly HP 8590 E Series Spectrum Analyzers and HP
28. 1 minute to test a channel that is not scrambled with all of the tests selected for that channel e It takes approximately 1 minute and 30 seconds to test a scrambled channel with all of the tests selected for that channel 50 the time interval that you specify in minutes should at the least exceed the number of channels that you are testing plus 10 minutes C 2 E RNA MAA RN a a Quick Reference TODAY S DATE Softkey Descriptions Cahle TV Analyzer Functions Press CABLE TV ANALYZER SYSTEM MEAS Timed Measure to access TIME INTERVAL allows you to select the current date as the start date or stop date for timed measurements When you press TODAY S DATE the analyzer uses the date setting of the spectrum analyzer If the date or time setting of the analyzer is incorrect see If the wrong date or time is displayed in Chapter 4 of the HP 8591C Cable TV Analyser Cable TV Measurements User s Guide Press CABLE TV ANALYZER SYSTEM MEAS Timed Measure START TIME to access TODAY S DATE as the start date for the timed measurement Press Timed Measure STOP TIME to access TODAY S DATE as the stop date for the timed measurement Key Access SYSTEM MEAS Quick Reference 4 123 Softkey Descriptions Cahle TV Analyzer Functions TODAY S TIMEDATE allows you to select the current time and date as the start TOS time and date for timed measurements Wh
29. 38 Index 3 DLP cataloging 4 22 erase user programs and variables 4 41 program and variable cataloging 4 21 saving to 4 127 state and trace register status 4 24 analyzer mode 4 02 analyzer state recalled 4 88 annotation 3 11 ANNOTATN ON OFF 4 14 APND CAT ITEM 4 14 ATTEN AUTO MAN 4 14 attenuation coupling 4 15 attenuator error factors 4 108 audio volume 4 65 aural carrier 4 25 AUTO ALL 4 15 AUTO COUPLE 4 15 automatic FFT 4 69 automatic leveling control 4 9 AUXB 4 4 4 16 Aux Conn Control 4 15 AUX CTRL 4 16 AUX IF OUTPUT 3 7 auxiliary connector input 4 4 auxiliary interface connector 4 16 control ime A 4 28 control line D 4 28 control line C 4 28 control line D 4 28 AUX INTERFACE 3 7 AUX VIDEO OUTPUT 3 7 B C 4 16 B lt gt C 4 16 B DL B 4 16 bandwidth functions 4 18 bandwidth measurement 4 77 bandwidth ratio video bandwidth to resolution bandwidth 4 132 battery changing the battery 3 29 BAUD RATE 4 16 BINARY SPAN 4 4 4 17 black and white printing 4 61 BLANK A 4 17 BLANK B 4 17 BLANK 4 17 Aan dA aa E rarer AR aa Index 4 C BLANK CARD 4 17 built m tracking generator 4 127 BW 4 18 CAL 3 21 4 18 CAL AMPTD 2 14 3 23 4 18 CAL FETCH 3 22 4 19 CAL FREQ 2 14 8 23 4 19 CAL FREQ amp AMPTD 2 14 3 22 4 19 calibrating the analyzer 3 22 calibration 4 18 attenuator error factors 4 108
30. 8591C Cable TV Analyzer Calibration Guide e Tells you how to test your spectrum analyzer to determine if the spectrum analyzer meets its specifications HP 8591C Cable TV Analyzer User s Guides There are two user s guides included with the cable TV analyzer Cable TV Measurements e Tells you how to make cable TV measurements with your cable TV analyzer e Describes the cable TV analyzer mode features Spectrum Analyzer Reference e Tells you how to make measurements using the spectrum analyzer mode e Describes the spectrum analyzer mode features e Tells you what to do in case of a failure HP 8590 E Series and L Series Spectrum Analyzers and HP 8591C Cable TV Analyzer Programmer s Guide Describes analyzer operation via a remote controller computer Getting Started i e 3 About This Guide Other HP 8581 Cable TV Analyzer Documentation Documentation Options Option 910 Additional User s Documentation Provides an additional copy of the user s guides the calibration guide and the quick reference guide Option 915 Assembly Level and Component Level Repair Service Guides Describes troubleshooting and repair of the spectrum analyzer Option 915 consists of two manuals HP 8590 E Series and L Series Spectrum Analyzers and HP 8591C Cable TV Analyzer Assembly Level Repair Service Guide e Describes adjustment and assembly level repair of the analyzer HP 590 E Series and L Series Spectrum Analyzers a
31. CAL FREQ amp AMPTD to rerun the frequency and amplitude self calibration routines 3 22 Getting Started Quick Tour Improving Accuracy with Self Calibration Routines The frequency and amplitude self calibration functions can be done separately by using the CAL FREQ or CAL AMPTD softkeys instead of CAL FREQ amp AMPTD NOTE If the frequency calibration CAL FREQ and the amplitude calibration CAL AMPTD self calibration routines are used the frequency calibration should be performed before the amplitude calibration unless the frequency data is known te be accurate If the self calibration routines cannot be performed see Check the basics in Chapter 9 of the HP 8591C Cable TV Analyzer Spectrum Analyzer Reference User s Guide Getting Started 3 23 Quick Tour Improving Accuracy with Self Calibration Routines Calibrating the Tracking Generator Option 011 only In order for the tracking generator to meet its specifications allow the cable TV analyzer to warm up for 30 minutes after being turned on before attempting to make any calibrated measurements Be sure to calibrate the cable TV analyzer and the tracking generator only after the cable TV analyzer has met operating temperature conditions NOTE Since the tracking generator self calibration routine uses the absolute amplitude level of the cable TV analyzer the cable TV analyzer amplitude should be calibrated prior to using CAL TRK GEN
32. HRC and T format The channel tuning configuration selection is selected independently of the test plan and is not stored with the test pian The analyzer retains the channel tuning configuration selection even when power is turned off until a new selection is made Press CABLE TV ANALYZER Setup Channel Tuning to access HRC Key Access CABLE TV ANALYZER Quick Reference 4 61 Softkey Descriptions Cahle TV Analyzer Functions RUM IDNUM INIT FLT INPUT Z BOR TSR INTERNAL CARD 4 62 initiates the Hum measurement Key Access CHANNEL MEAS is used when the instrument is powered on the first time It inputs the analyzer model number and option information This is a service calibration function and is for service use only Refer to the service guide for more information Key Access is used when the instrument is powered on the first time It sets the defaults for spectrum analyzer flatness including the start and stop frequencies and the step size All of the correction values are set to zero This is a service calibration function and is for service use only Refer to the service guide for more information Key Access adjusts the voltage readout by 1 76 dB to correct for the difference between voltage and power measurements in a 75 Q system versus a 50 Q system The impedance you select is for computational purposes only since the actual impedance of 75 Q is set by internal hardware The pre
33. ME CRD Quick Reference Softkey Descriptions Cable TV Analyzer Functions RECALL For channel measurement mode it recalls a trace into trace B FRM INT for use as a reference trace or to recall a system frequency response trace This function simplifies recalling a trace from the analyzers internal memory A trace can also be recalled from a memory card using procedures provided in the analyzer user s guide For system measurement mode it allows you to recall a previously saved test plan from plans 1 through 5 from analyzer memory Recalling a test plan overwrites the current test plan If you do not want the current test plan to be overwritten save the current test plan before recalling a new one See Step 3 Save the current test plan in internal memory in Chapter 3 of the HP 8591C Cable TV Analyzer Cable TV Measurements User s Guide for more information The test plans are saved in trace registers 6 through 10 The channel numbers tests scrambling status channel tuning configuration quiet line number frequency response line number test signal line number and field selection are saved in the test plan the location code the temperature the selection of CTB testing and the setting for an external pad EXT PAD YES NO are stored in nonvolatile analyzer memory and are retained until changed Key Access CHANNEL MEAS or SYSTEM MEAS Quick Reference 4 99 Soft
34. MENU Sredie Tstplan MEENTCR E ii Data ENTER CATALOG CARD ferea l Save T VIEW EW CH SEL Prev Menu Meng PRINT R TO INT MEM PLAN 2rDpPURO H SCREEN SAVE TO MEM CARD PLAN 2 PLAN I PLAN PLAN TE NEXT PAGE PREV PAGE SC TO PAGE PRINT REPORT STORE TO CARD Moin Menu PEAK SEARCH MARKER CF or MARKER gt MiD SORN S MARKER A NEXT PEAK NEXT PK RIGHT NEXT PK LEFT More 1 i of 2 ome 18 Alternate snfikey when the FFT function is s iecied 5 14 Quick Reference Key Menus Cable TV Analyzer Functions iic E SET SPECTRUM SPECTRUM ANALYZER m Config CABLE TV ANALYZER TV RECEIVER DOO QI CHANNEL MEAS TOM SYSTEM MEAS CHANNEL SELECT Pix amp SND ON OFF Prev Menu Quick Reference E en EI eni Key Menus Cahle TV Analyzer Functions vem e 1 NALYZE EMORY c nes TRACE YRACE TRACE Catalog internal INTERNAL CARD honge Prati Mors 3 of 2 mm i e Caisiog ious Menu Catal tous Menu Previous Mane MNOPOR STUVWX Yf S More EDIT LAST EDIT CAT ITEM APND CAT iTEM Quick Reference Key Menus Cahle TV Analyzer Functions AE MORY CARD 3 H ec T TNAX tH moe P lt Xo r i id l 1 CATALOG CATALOG CATALOG CATALOS i et e ee JINGI ji Done More 2 of DLP AMP i aT LNE Fi DISPLAY p Cait Cotalag 1 otaloq More 2 Quick Reference of 2
35. Previous Menu 5 17 Key Menus Cable TV Analyzer Functions ERIT LAST DiT CAT ITEM APND CAT TEM i DT E ditor Previous Menu DELETE FELE SELECT PREFIX SAVE i Exit Catalog i Previous Menu gt PNTRMLIZ LINES Proce gt intr P 5 EE AM cor Exit Cotetog SAY LOCK ON OFF Sen ous Mer Previous Menu SAY LOCK Q E i Catalog internal i INTERNAL CARE CATALOG Anto 3 PREF ix CATALOG EG if Ceialeg PES f Pravious Mena CATALOG PREF thenge Pr Mere of PND C SAVE COIT NEW EDIT Previegs Meno CATALOG 1 DIT LAST i EDIT CAT 1TE More 2 2 E FILE APND CAT ranges to MEM LOCKED SAV LOCK is ON Previous Menu 5 18 Quick Reference Key Menus Cable TV Analyzer Functions AND SAVING TO CARD sel zs v LIMIT LINES ANP COR Previeus Meno tolog Card RNAL CARD CATALOG CAT CATALOG CATALOG Change Pr Mare BLURS Edii Gene More 2 of Z o DISPLAY Cataeiog G Mora 2 of 2 Previous Mene Quick Reference 5 19 Key Menus Cahle TV Analyzer Functions MAN E pEcAY 14 GATE LENGTH 14 EDGE POL SWEEP DELAY GATE CT SLi T WINDOW SWP TIME GATE U T WINDOW RES ay TRIG MKR QN OFF Wa Menu Define Detine Goie GATE DELAY 4 Peri Ceupling GATE LENGTH 4 GATE ON OFF UPDATE TiMEFRE TR MIR ON OF EXIT utiLgT SATE TiMEFREG SWEEP DELAY T WINODWw Swe TIME ENTE
36. STUVWX 4 117 subtract display line from trace B 4 16 subtract trace B from A 4 7 SWEEP 4 117 Sweep control continuous 4 117 single 4 109 4 117 SWEEP CONT SGL 4 117 SWEEP DELAY gate utility 4 117 sweep modes 3 13 3 14 SWEEP OUTPUT 3 7 SWEEP RAMP 4 5 4 118 sweep time 4 118 sweep time coupling 4 14 gate utility 4 34 SWEEP TIME DAC 4 5 4 118 switch trace A and B 4 7 MM ani aa aaar aa aaa teen vA ERR Index 26 SWP CPLG SR SA 4 118 SWP TIME AUTO MAN 4 118 synchronization constants 4 37 SYNC NRM NTSC 4 119 SYNC NRM PAL 4 119 SYS BTS TST CH 4 119 SYSTEM FRQ RESP 4 120 SYSTEM MEAS 4 120 T T 4 121 table of markers 4 75 table of amplitude correction factors 4 10 table of signal peaks 4 83 TABLE ADL NREM 4 125 F TRACE 4 121 temperature range 4 47 temperature conditions 2 14 test and function operations analyzer into sampie detection mode 4 73 recall trace B from internal memory 4 99 select channel number 4 25 set analyzer state for test 4 25 Store a reference trace 4 121 store trace B in internal memory 4 103 testing initiating testing later 4 122 test plan clearing 4 27 recalling a test plan from analyzer memory 4 99 saving a test plan in analyzer memory 4 102 Test Pian 4 34 test plan recall 4 100 test plan recall from card 4 98 test results view last 4 135 tests and functions channel select 4 25 frequency response setup 4 121
37. TV Analyzer Functions Table 4 7 Preset Conditions for All Models continued Reference ievel 43 dBmV in power on units Reference level offset 10 iB Reference level position top 8th graticule Resclution bandwidth 3 MHz coupled Span Refer ta Table 4 5 Start frequency Refer to Table 4 5 Stop frequency Rater to Table 4 5 State registers 1 8 unaffected Sweep continuous Sweep time Refer to Table 4 5 coupled Threshold of Trace A clear write Trace B store blank Trace store blank Trace math command TRMATH cleared Trace registers unaffected Trigger free Video averaging aff l Video bandwidth 1 MHz coupled Video bandwidth to resolution bandwidth ratio 1 3 allows you to access the previous system measurement menu Key Access SYSTEM MEAS allows you to select the previous page of on screen test results Press CABLE TV ANALYZER SYSTEM MEAS Measure Now Yes or No DUMP TO SCREEN PREV PAGE Quick Reference 4 93 Softkey Descriptions Cable TV Analyzer Functions Config PRINT REPORT PRINTER ADDRESS PRINTER SETUP accesses the softkey functions that are used to address the printer select a black and white print or a color print and reset the printer See the COPY key for more information Key Access allows you to print a report of the currently displayed test results Press CABLE TV ANALYZER SYSTEM MEAS Measure Now Yes or No DUMP TO SCREEN to acces
38. accessed measurement function is not available FFE measurement function is not available N dB peints measurement function is not available Occupied bendwidth measurement function is not available Peak zoom routine is not available Res BW turns off resolution BW coupling to pulse width Span must be zero in the time demain window Sweep time T l Video BW turns off sweep time coupling to PRI measurement function is not available turns off video BW coupling to gate length Key Access SWEEP Quick Reference 4 59 Softkey Descriptions Cahle TV Analyzer Functions GND REF DETECTOR PAGE ON OFF GRPH MKR 4 60 accesses the softkey menu used for selecting screen title or prefix characters G through L Key Access CAL CONFIG DISPLAY RECALL or displays the output of the analog ground reference produced on the A16 processor video assembly This is a service diagnostic function and is for service use only Key Access allows you to select a specific page of on screen test results to view turns the screen graticule on and off This is helpful when alternative graphics are drawn on the screen through a remote controller and during plotting when a graticule is not required Key Access turns the graph marker ON or OFF This softkey is available when ACPGRAPH is ON for ACP or ACP extended measurements or when PWRGRAPH is ON for channel power measurements Front Panel Access Ke
39. and returns to the normal full sized instrument display The state of the last active window will become the instrument state when the windows display is turned off Key Access WINDOWS e eS en Quick Reference Softkey Descriptions Cahle TV Analyzer Functions WINDOWS activates the windows display mode and accesses the menu of window zone functions The windows display function splits the screen into two separate displays Only one of these displays is active at a time The currently active window will have a solid line around the graticule rather than a broken line Most functions can be used from within the windows display mode Some functions like editing limit lines and showing the options require a full sized display They will temporarily exit the windows display format When the function is finished the instrument will return to a windows display Other functions will permanently exit the windows display and it will be necessary to restart the windows display mode by pressing WINDOWS ON See Table 4 8 This key can also be used to toggle the TV picture and sound On and Off when in the channel measurement mode and after a channel has been selected Pressing any softkey returns you to the analyzer display Table 4 8 Functions That Exit the Windows Display Format Function Description AM Adjacent Channel Power Calibration Functions Channel Power Confidence Test Dispose User Memory FFT Gate U
40. are designed for service use only However brief descriptions for each function are provided in this chapter For more detailed descriptions and information about the use of each function refer to the service guide Service documentation can be obtained by ordering Option 915 through your HP Sales and Service office Option 915 is described in more detail in the HP 8591C Cable TV Analyzer Spectrum Analyzer Reference User s Guide Service Calibration Functions Service Cal accesses the following service calibration softkeys CAL TIMEBASE EDIT FLATNESS EXECUTE TITLE EXIT Flatness Data INIT FLT SET ATTN ERROR Quick Reference 4 3 Softkey Descriptions Service Functions Service Diagnostic Functions Service Diag accesses the following diagnostic softkeys 10V REF DETECTOR 10V REF DETECTOR 2v REF DETECTOR ALC TEST l Option 011 only ANALYZER GAINS AUXB BINARY SPAN DISPLAY CAL DATA DROOP FINE TUNE DAC FM COIL DRIVE FH GAIN 4 4 Quick Reference Service Diagnostic Functions continued FH OFFST FM SPAN FREQ DIAG FRQ DISC NORM OFF GND REF DETECTOR MAIN COIL D MAIN SPAN STP GAIN ZERO SWEEP RAMP SWEEP TIME DAC X FINE TUNE DAC Quick Reference Softkey Descriptions Service Functions Cable TV Analyzer Functions LOCK ON OFF 10V REF DETECTOR 10V REF DETECTOR 2y REF DETECTOR 4 6 determines the percent of amplitude modulation of the larg
41. defined channel This channel is then accessed by selecting channel 0 zero The setting defined here is stored in nonvolatile analyzer memory This means that the analyzer retains the setting even when power is turned off until a new setting is made Press CABLE TV ANALYZER Setup Channel Tuning to access CHNL O CNTR FRQ Key Access CABLE TV ANALYZER allows you to define the span for a user defined channel This channel is then accessed by selecting channel 0 zero The setting defined here is stored in nonvolatile analyzer memory This means that the analyzer retains the setting even when power is turned off until a new setting is made Press CABLE TV ANALYZER Setup Channel Tuning to access CHNL O SPAN Key Access CABLE TV ANALYZER Quick Reference 4 131 Softkey Descriptions Cable TV Analyzer Functions UN RATIO VID AVG ON OFF J changes the amplitude units to V for the current setting log or linear Key Access AMPLITUDE selects the ratio between the video and resolution bandwidths If signal responses near the noise level are visually masked by the noise the ratio can be set to less than 1 to smooth this noise The knob and step keys change the ratio in a 1 3 10 sequence Pressing PRESET and AUTO ALL sets the ratio to 0 300 X The ratio can be changed using the step keys or the knob Key Access initiates a digital averaging routine that averages displayed signals and no
42. deskjet 4 39 DESKJET 310 4 39 DESKJET 540 4 39 DESKJET 550C 4 39 deskjet printer 4 39 detection mode negative peak 4 40 positive peak 4 40 sample 4 40 DETECTOR PK SP NG 4 40 DIF GAIN DIF PHAZ 4 40 disable peak detector reset 4 42 display analog 4 11 cataloging 4 22 two windows 4 136 DISPLAY 4 40 DISPLAY CAL DATA 4 4 4 40 DISPLAY CNTL I 4 41 display compression due to monitor output format 3 14 display Hne 4 42 DISPLAY CARD 4 40 display zone change span 4 138 find left peak 4 138 find right peak 4 138 move center 4 138 Dispose User Mem 4 41 D3540 4 6 DL DELTA ON OFF 4 41 DLP cataloging 4 22 editor 4 46 DLP editor function appending 4 14 display and edit item 4 44 edit last item 4 45 iu 84 DONE 4 42 double display 4 136 DROOP 4 4 4 42 E DSP LINE ON OFF 4 42 DUMP TO PRINTER 4 42 DUMP TO RAM CARD 4 42 DUMP TO SCREEN 4 43 DWELL TIME 4 43 earphone connector 3 7 EDGE POL POS NEG 4 43 edge triggering time gate utility 4 43 edge triggering gate control 4 58 Edit Amp Cor 4 43 EDIT CAT ITEM 4 44 Edit Done 4 44 EDIT DONE 4 44 EDIT FLATNESS 4 8 4 44 editing DLPs 4 46 EDIT LAST 4 45 Edit Limit 4 45 Edit Lower 4 45 Edit Mid Deit 4 45 Editor 4 46 Edit Up Low 4 45 Edit Upper 4 45 EDIT UPR LWR 4 46 EMI bandwidth 120 kHz 4 7 200 Hz 4 7 9 kHz 4 7 EMI BW Menu 4 46 ending a measurement 4 8 ENTER 4 46 ENTER BY CH
43. extended dynamic range 4 9 adjacent channel power graph 4 8 adjacent channel power ratio 4 8 ADJ CHAN POWER 4 8 ADJ CHAN PWR extd 4 9 AIR 4 9 ALC MTR INT XTAL 4 9 ALC TEST 4 4 4 10 aliasing signal identification 4 110 ALL DLP CARD 4 10 ALL TESTS 4 10 alpha characters 4 8 4 60 4 117 4 137 meee cin ee aaa TE UT TOTO a aaa r a aaa Index Z 96 AM ON OFF 4 6 Amp Cor 4 10 AMP COR 4 10 AMP COR ON OFF 4 1 amplifier select external 4 52 AMPLITUDE 3 4 3 17 4 11 amplitude accuracy 4 33 amplitude and frequency self calibration routine 4 19 amplitude correction factors cataloging 4 21 delete point 4 38 edit 4 43 edit done 4 44 menus 4 10 on or off 4 11 purge 4 96 recall table 4 97 save table 4 102 select amplitude 4 105 select frequency 4 106 select point 4 106 select sweep time 4 106 storing 4 10 amplitude demodulation 4 39 amplitude menus 4 11 amplitude modulation 4 6 amplitude scale 4 104 amplitude self calibration 4 18 amplitude units 4 11 dBm 4 36 dBmV 4 36 GBuV 4 36 Volts 4 135 Watts 4 135 Amptd Units 4 11 analog display 4 11 ANALOG ON OFF 4 11 ANALYZER ADDRESS 4 13 analyzer attenuator 4 14 analyzer auto coupled sweep time 4 118 analyzer battery 3 22 analyzer configuration default 4 36 ANALYZER GAINS 4 4 4 18 Analyzer Input 4 13 analyzer memory cataloging functions 4 22 catalog variables 4 24 delete file 4
44. for more information starts the DLP editor function clearing the DLP editor memory to create a new item in the analyzer 2500 byte DLP editor memory The item will not be in the analyzer user memory until it is processed by the SAVE EDIT softkey The DLP editor memory buffer remains intact when the instrument is preset and when it is powered off Key Access RECALL or SAVE switches the active window between the two displayed windows if the windows display mode has been turned on The active window is marked by solid lines Quick Reference 4 77 Softkey Descriptions Cable TV Analyzer Functions NEXT PAGE NEXT NEXT PK LEFT NEXT PK RIGHT 4 78 allows you to select the next page of on screen test results Press CABLE TV ANALYZER SYSTEM MEAS Measure Now Yes or No DUMP TO SCREEN to access NEXT PAGE Key Access SYSTEM MEAS places the marker on the next highest peak The signal peak must exceed the threshold value Also see the PEAK EXCURSN and THRESHLD ON OFF softkey descriptions Key Access AUX CTRL or PEAK SEARCH moves the marker to the next peak to the left of the current marker The signal peak must exceed the threshold value if there is no peak to the left the marker will not move Also see the PEAK EXCURSN and THRESHLD ON OFF softkey descriptions Key Access AUX CTRL or PEAK SEARCH moves the marker to the next peak to the right of the current marker The signal
45. for one coordinate point so that a POINT segment specifies a limit value for a single frequency or time Key Access DISPLAY Quick Reference 4 87 Softkey Descriptions Cable TV Analyzer Functions Power Menu accesses functions that make transmitter power os measurements The measurements are designed for analog radio or continuous carrier digital radio signals Key Access MEAS USER POWER ON IP LASTO determines the state of the analyzer when the analyzer is powered on NOTE if you have a downloadable program or personality installed in analyzer memory the following changes apply to the operation of the POWER ON function When using a downloadable program or personality the last state of the personality is net recalled We recommend that if you are using a downloadable program or personality you set POWER ON IP LAST to IP f POWER ON IP LAST is set to LAST you must press whenever you power on the analyzer Key Access 4 88 Quick Reference NOTE Turning the analyzer on performs an instrument preset Turning on the analyzer also fetches CAL data completes a processor test clears trace B trace C and both the input and output buffers turns off Softkey Descriptions Cable TV Analyzer Functions provides a convenient starting point for making most measurements Pressing displays softkeys used for accessing the operating modes available for your analyzer See Table 4 6 and Table
46. is in the system measurement mode MONITOR is displayed in the upper right corner of the analyzer display Pressing SYSTEM MEAS accesses the following ENTER LOCATION ENTER TEMP Recall TstPlan Measure Now Timed Measure Create TstPlan Recall Data CATALOG CARD VIEW LAST and VIEW CH SEL Accessing the system measurement mode automatically for changes the input impedance setting of a spectrum analyzer Cus to 75 Q The setting of the input Impedance is usually controlled by INPUT Z 50 75 For spectrum analyzer s with 50 Q impedance changing the input impedance with INPUT Zi 50 75 minimizes the impedance mismatch but does not eliminate the impedance mismatch unless a 50 Q to 15 9 external matching pad is used Press MODE MODE CABLE TV ANALYZER to access SYSTEM MEAS Key Access SYSTEM MEAS 4190 Quick Reference T KE REF TRACE Softkey Descriptions Cable TV Analyzer Functions allows you to select the T channel tuning configuration If you do not select a channel tuning configuration the default configuration is the standard STD configuration The choices for the channel tuning configuration are standard STD off the air AIR incrementally related carriers IRC harmonically related carriers HRC and T format The channel tuning configuration selection is selected independently of the test plan and is not stored with the test plan The analyzer retains the chan
47. itraces A Bi 1L line S single sweep view traces A B C V video S store blank traces A B C E external M minimum hold trace Ci Te TV Getting Started 3 13 Quick Tour Screen Annotation More about annotations Item 21 refers to the trigger and sweep modes of the cable TV analyzer The first letter E indicates the cable TV analyzer is in free run trigger mode The second letter S indicates the cable TV analyzer is in single sweep mode Item 22 refers to the trace modes of the cable TV analyzer The first letter W indicates that the cable TV analyzer is in clear write mode The second letter is A representing trace A The trace B trace mode is SB indicating trace B B is in the store blank mode S The trace mode annotation for trace C is displayed under the trace mode annotation of trace A In Figure 3 5 the trace C trace mode is SC indicating trace C C is in the store blank mode S j The WINDOWS display mode splits the screen into two separate displays Only one of these displays is active at a time The currently active window will have a solid line around the graticule rather than a broken line The complete annotation is not available for each window because of space limitations The display will be compressed slightly when using the PAL or NTSC format for the MONITOR OUTPUT instead of the normal format The PAL and NTSC formats have less vertical resolution than the cable
48. loading in a downloadable program from the memory card or defining a function using remote programming commands FUNCDEF or ACTDEF Key Access or accesses a menu that has the cataloging functions for analyzer memory Key Access RECALL or SAVE catalogs the limit lines on the memory card Press CATALOG REGISTER to catalog limit line tables stored in analyzer memory limit line tables saved in analyzer memory are stored in trace registers Key Access or Quick Reference Softkey Descriptions Cahle TV Analyzer Functions CATALOG ON EVENT displays the on event programming commands and their So status The on event programming commands are as follows ONEOS Performs command list at end of every Sweep ONSWP Performs command list at beginning of every Sweep TRMATH Performs trace math ONCYCLE Performs command list periodically ONDELAY Performs command list once after a time period ONMKR Performs command list at the marker ONSRQ Performs command list on every service request ONTIME Performs command list at a specific time ONPWRUP Performs command list once at power up NOTE if you get into an infinite loop with ONPWRUP press PRESET to abort the command list then press ERASE DLP MEM to clear all OLPs Key Access or CATALOG PREFIX catalogs all of the saved data that has the specified prefix that is either on the memory card or in analyzer memory Key Access RECALL or pmed
49. memory card The date code engraved on the memory card consists of numbers and letters engraved in the black plastic on the side of the memory card See Figure 3 9 The first number indicates the year the following two characters indicate the month and the following number indicates the week in the month that the memory card battery was installed For example 80C3 indicates the battery was installed in the third week in October in 1988 Getting Started 3 29 Procedure to Change the Memory Card Battery CAUTION Quick Tour Memory Card Insertion and Battery Replacement pulZzic Figure 3 9 Memory Card Battery Date Code Location The battery is located beside the card s write protect switch on the end opposite the connector The battery power enables the memory card s memory to retain data You can lose the data when the battery is removed Replace the battery while the card is installed in a powered up instrument 1 2 Locate the groove along the edge of the battery clip See Figure 3 10 Gently pry the battery clip out of the card The battery fits within this clip Replace the battery making sure the plus sign on the battery is on the same side as the plus 4 sign on the clip Insert the battery clip into the memory card holding the clip as oriented in Figure 3 10 Face the open edge of the clip toward the write protect switch on the memory card Write the date that the battery was replac
50. peak must exceed the threshold value If there is no peak to the right the marker will not move Also see the PEAK EXCURSN and THRESHLD ON OFF softkey descriptions Key Access PEAK SEARCH Quick Reference No No User Nenu NORMLIZE ON OFF NORMLIZE POSITION NTSC Softkey Descriptions Cable TV Analyzer Functions allows vou to select not to do the function If you press CLEAR TST PLAN and then press NO you have selected not to clear the current test plan from analyzer memory If you enter a channel by using ENTER BY CHANNEL or ENTER BY RANGE and then press NO the channel or range of channels will be treated as channels that are not scrambled NO js accessed either by pressing CLEAR TST PLAN or by ENTER BY RANGE Key Access SYSTEM MEAS is displayed if key number 1 has not been defined by the user Key number 1 can be defined by remote programming commands KEYCMD or KEYDEF Key Access MEAS USER subtracts trace B from trace A and adds the result to the display line The result is displayed in trace Key Access TRACE displays the display line and makes the display line function active The trace data is normalized with respect to the display line even if the value of the display line is changed Key Access allows you to trigger on the NTSC video format Key Access Quick Reference i 4 79 Softkey Descriptions Cable TV Analyzer Function
51. ta e THAM a a a i a S TRIN a T ETENIM REPRE a Pa d 4 28 Quick Reference COARSE TUNE DAC CONF TEST CONT MEAS CONTINUS FFT Sattkey Descriptions Cable TV Analyzer Functions displays the analog output of the YTO coarse tune DAC located on the A7 analog interface assembly This is a service diagnostic function and is for service use only Key Access initiates a variety of tests to check the major functions of the analyzer Key Access accesses the softkey menu used for printer and plotter configurations the time and date display functions changing the current prefix memory card configuration functions disposing of user defined variables and programs from analyzer memory changing the analyzer address or the baud rate displaying the installed options on screen and changing the format of the MONITOR output sets the functions in the Power Menu so that they make the measurement at the end of every sweep Key Access MEAS USER initializes the fast Fourier transform FFT function puts the analyzer in continuous sweep and performs an FFT at the end of each sweep If the FFT function is already active it puts the analyzer in continuous sweep and performs FFL Key Access MEAS USER Quick Reference l 4 29 Softkey Descriptions Cable TV Analyzer Functions initiates an output of the screen data without an external controller to a previously specified graphics printer or plotter The printer or p
52. 0 files of test data can be stored on a 128 kilobyte or 32 kilobyte RAM card No more than 40 files of test data can be stored on a RAM card however Key Access SYSTEM MEAS Quick Reference DUMP TO SCREEN DWELL TIME EDGE POL POS NEG Edit Amp Cor Softkey Descriptions Cahie TV Analyzer Functions allows you to send test results to the analyzer screen Upon being sent to the screen the following options are available NEXT PAGE displays the next page of test results PREV PAGE displays the previous page of test results 2 GOTO PAGE displays selected page number PRINT REPORT prints a test results report STORE TO CARD stores test results to a RAM card Key Access SYSTEM MEAS sets the dwell time for the marker pause during which demodulation can take place in nonzero span sweeps The dwell time can be set from 2 milliseconds to 100 seconds Key Access determines whether the gate triggers on the positive going or negative going edge of the signal at the GATE TRIGGER INPUT connector on the rear panel of the analyzer Key Access allows you to edit the current amplitude correction factors table by accessing the SELECT POINT SELECT FREQ SELECT AMPLITUD DELETE POINT Edit Done and PURGE AMP COR softkeys Key Access Quick Reference 4 43 Softkey Descriptions Cable TV Analyzer Functions BDIT o CAT ITEM Edit Done EDIT DONE FLATNESS 4 44 starts the DLP edi
53. 01 SECAM L 4 104 segment deletion 4 38 SELECT 12 3 4 4 105 select all tests 4 10 SELECT AMPLITUD 4 105 Index 23 SELECT BLT AMPL 4 105 SELECT FREQ 4 106 selecting the tune configuration 4 26 SELECT EWR AMPL 4 106 SELECT MID AMPL 4 106 SELECT POINT 4 106 SELECT PREFIX 4 106 SELECT SEGMENT 4 106 SELECT TIME 4 106 SELECT TYPE 4 107 SELECT UPR AMPL 4 107 self calibration routine CAL TRK GEN 2 16 self calibration routines 2 14 8 21 26 amplitude 4 18 i CAL 4 18 correction factors 4 19 frequency 4 19 frequency and amplitude 4 19 tracking generator 4 20 Service Cal 4 3 4 107 Service Diag 4 4 4 107 service functions 4 3 Service Cal 4 3 Service Diag 4 4 SET ATTN ERROR 4 3 4 108 Set B amp W Printer 4 108 Set Colr Printer 4 108 SET DATE 4 108 SET TIME 4 108 setting the amplitude 3 17 setting the center frequency 3 17 setting the marker 3 19 setting the span 3 17 setting the start time 4 114 setting the stop time 4 115 setting the time interval for timed testing 4 122 setup power measurement functions 4 109 printer 4 94 Setup 4 169 SGL SWP 4 109 SHOW OPTIONS 4 110 SIGNAL ID 4 110 signal peak highest 4 112 signal tracking 4 82 SINGLE FFT 4 110 SINGLE MEAS 4 111 Index 24 single sweep 4 109 4117 SLOPE 4 111 soitkey guide conventions 1 5 softkey label 3 4 softkey locations 5 2 softkey overview 3 15 softk
54. 19 MAN TRK ADJUST 4 67 manual tracking adjustment 4 67 marker delta display line 4 125 FET 4 54 gate utility trigger 4 128 list of 4 75 menu of controls 4 76 menu of functions 4 76 selection 4 105 table 4 75 time gate utility 4 72 trace selection 4 75 zeroing delta marker in the gate utility 4 137 MARKER A 4 68 MARKER A SPAN 4 68 MARKER ALL OFF 4 71 MARKER AMPTD 4 71 marker counter 4 74 resolution 4 28 marker functions 3 4 marker noise 4 74 MARKER NORMAL 3 19 4 71 MARKER ON 4 72 marker pause 4 74 dwell time 4 48 marker readout modes 4 74 MARKER AUTO FFT 4 69 MARKER OF 4 69 MARKER CF STEP 4 69 MARKER FFT STOP 4 70 MARKER MID SCRN 4 70 MARKER MINIMUM 4 70 MARKER PK PK 4 70 MARKER REF LVL 4 71 MARKER START 4 71 MARKER STOP 4 71 marker table mode 4 125 i marker to 4 76 hou pues marker tracking 4 75 4 82 mass storage device analyzer memory 4 62 memory card 4 62 M D E ria RNA Generel AAA errr re Index 16 matching impedance 4 53 MAX HOLD A 4 72 MAX HOLD B 4 72 maximum mixer level 4 72 MAX MXR IVL 4 72 MEAS OFF 4 72 Measure Now 4 73 MEAS USER 4 72 MEM LOCKED 4 73 memory card battery 3 29 card configuration 4 20 catalog dispiay images 4 22 catalog DLPs 4 22 catalog functions 4 22 cataloging amplitude correction factor files 4 21 catalog limit lines
55. 27 Trace Intrnl 4 127 Track Gen 4 127 tracking generator 4 127 frequency adjustment 4 67 internal external leveling 4 9 output 3 4 output power 4 115 peak response 4 127 power sweep 4 97 power sweep range 4 113 self calibration 4 20 self calibration routine 2 16 3 24 source attenuator 4 113 source power offset 4 113 source power step size 4 113 warm up time 3 24 tracking generator self calibration routine 2 16 TRACKING PEAK 4 127 TRIG 4 128 trigger 4 128 external 4 53 free run 4 57 line 4 65 video 4 133 triggering EDGE POL POS NEG 4 43 gate edge or level 4 58 gate utility 4 43 trigger modes 3 13 3 14 TRIG MKR ON OFF 4 128 TRMATH command 4 23 TTL PWR INPUT 4 128 T tune configuration 4 121 tune configuration AIR 4 9 HRC 4 61 IRC 4 63 selecting 4 26 STD 4 114 turning off markers 4 71 turning off the FFT function 4 54 Index 29 turning off windows display 4 135 turning on the cable TV analyzer for the first time 2 12 turn off active function 3 6 3 8 TV LINE f 4 128 TV picture using WINDOWS ON 4 136 TV RECEIVER 4 129 TV Standard 4 129 TV SYNC NEG POS 4 129 TV trig even field 4 130 NTSC video format 4 79 odd fieid 4 130 PAL M video format 4 80 PAL video format 4 80 SECAM L video format 4 104 TV line number 4 128 TV Standard 4 129 TV sync 4 129 vertical interval 4 130 TV TRIG 4 118 TV TRIG EVEN FLD 4 130 TV TRIG ODD FLD 4 130 TV TRIG OUTP
56. 37 ZERO SPAN 4 137 ZONE CENTER 4 138 ZONE PK LEFT 4 138 ZONE PK RIGHT 4 138 ZONE SPAN 4 138 ZOOM 4 138 zooming a window 4 138 M X O O Index 32
57. 4 22 catalog states 4 24 catalog traces 4 24 changing the battery 3 29 delete file 4 17 4 38 display recall 4 20 formatting 4 56 inserting a memory card 3 28 program and variable cataloging 4 21 recalling a DLP 4 26 recalling a state 4 21 recalling a trace 4 21 saving states 4 116 saving to memory card 4 127 write protect switch 3 80 memory card reader 3 4 menu and softkey overview 3 15 menus 5 2 message block 3 4 messages CHANNEL 7 4 25 RECALL TRACE n 4 99 REGISTER 4 99 mid delta limit line editing amplitude 4 45 MIN HOLD C 4 73 4 78 minimum to marker 4 70 mixer input level maximum 4 72 MK COUNT ON OFF 4 74 MK NOISE ON OFF 4 74 N MK PAUSE ON OFF 4 74 MKR 3 19 4 76 MK READ F TIP 4 74 MKR FOTN 4 76 MKR 4 76 MK TABLE ON OFF 4 75 MK TRACE AUTO ABC 4 75 MK TRACK ON OFF 4 75 MNOPQR 4 76 MODE 3 4 4 76 model specific preset conditions 4 90 MONITOR OUTPUT 9 7 display compression 9 14 Monitor TV 4 77 move trace A into C 4 7 multipen plotter 4 32 N dB PTS ON OFF 4 77 negative peak detection mode 4 40 NEW EDIT 4 77 NEXT 4 77 NEXT PAGE 4 78 NEXT PEAK 4 78 NEXT PK LEFT 4 78 NEXT PK RIGHT 4 78 NO 4 79 noise figure amplifier 4 52 normal marker 4 71 NORMLIZE ON OFF 4 79 NORMLIZE POSITION 4 79 No User Menu 4 79 NTSC 4 79 NTSC video format 4 119 number units keypad 3 9 OCC BW 96 POWER 4 80 OCCUPIED BANDWDTH 4 80
58. 4 5 for the conditions established by pressing PRESET The instrument preset function performs a processor test but does not affect CAL data Pressing clears both the input and output buffers but does not clear trace B The amplitude values of trace C are set to the reference level Amplitude correction factors are turned off Limit line testing is turned off but the limit line tables remain in analyzer memory The status byte is set to 0 Instrument preset affects all operating modes See the key description for MODE for more information about other operating modes Pressing erases all on time functions ONCYCLE ONDELAY ONEOS ONMKR ONSRQ ONSWP ONTIME and TRMATH These are remote programming commands See the HP 8590 E Series and L Series Spectrum Analyzers and HP 8591C Cable TV Analyzer Programmer s Guide for more information amplitude correction factors turns off limit line testing and sets the status byte to 0 The last state of the analyzer before it was switched off is recalled unless IP has been set by the POWER ON function a aa a a a a a Quick Reference 4 89 Softkey Descriptions Cable TV Analyzer Functions Table 4 5 Model Specific Preset Conditions Center Start Frequency Frequency Frequency Stop Sweep Time 1 8 GHz 1 20 ms auto coupied Tahle 4 6 Common Preset Conditions A B A Amplitude correction factors Amplitude units Annotation and graticule display Att
59. 70A Plotter with the HP 8581C cable TV analyzer you can select one or four plots per page but not two plots per page Quick Reference 4 31 Softkey Descriptions Cable TV Analyzer Functions For a multipen plotter the pens of the plotter draw the different components of the screen as follows Description Draws the annotation and graticule Draws trace A Draws trace B Draws trace C and the display line Draws user generated graphics and the lower limit line Draws the upper limit line To plot press Previous Menu COPY DEV PRNT PLT PLT should be underlined and COPY Printing is usually faster than plotting but plotting provides higher resolution output The analyzer works with plotters such as the HP 7440A Prset tt a re a a a a A a a a e ATTI NS Ra a TRIP a 4 32 Quick Reference COPY DEV PRNT PLT CORRECT ON OFF NOTE Softkey Descriptions Cable TV Analyzer Functions changes between a printer and plotter For example if you have been printing and want to do a plot press COPY DEV PRNT PLT to underline PLT before pressing C Key Access CONFIG controls use of some of the correction factors When ON is underlined correction factors are used and CORR appears on the display When OFF is underlined correction factors are not used Turning the correction factors off degrades amplitude accuracy Correction factors must be on for the analyzer to meet its specified perfo
60. ANNEL 4 46 ENTER BY RANGE 4 46 entering a channel 4 46 entering a range of channels 4 46 entering the location 4 47 entering the start time 4 114 entering the stop time 4 115 entering the temperature 4 47 entering the time interval for timed testing 4 122 ENTER LOCATION 4 47 ENTER PRI 4 48 ENTER REF EDGE 4 48 ENTER TEMP 4 47 ENTER WIDTH 4 48 epson format 4 50 4 51 it P a a EEA REIR a a a e AAA aaa A rrr rrr Index 10 EPSON LARGE 4 108 epson 13570 4 50 epson mx80 4 51 epson printer 4 50 4 51 EPSON SMALL 4 108 ERASE ALL 4 49 ERASE CARD 4 49 ERASE DLP 4 48 ERASE DLP MEM 4 48 ERASE MEM ALL 4 49 ERASE MEM CARD 4 49 ERASE STATE 4 50 ERASE STATEALL 4 50 ERASE TRACE 4 50 ERASE TRACEALL 4 50 erase user programs and variables 4 41 ESD reducing damage caused by ESD 2 3 exchange trace A and B 4 7 exchange trace B and C 4 16 execute a command front panel 4 51 EXECUTE TITLE 4 3 4 51 EXIT 4 51 Exit Catalog 4 51 EXIT SHOW 4 51 EXIT UTILITY 4 51 expanding a window 4 138 EXT AMP GAIN 4 52 EXT AMP NZ FIG 4 52 EXT AMP YES NO 4 52 EXTERNAL 4 53 external keyboard connector 3 7 external pad 4 53 EXTERNAL PREAMPG 4 54 EXT KEYBOARD 3 7 EXT PAD YES NO 4 53 EXT REF INPUT 3 7 EXT TRIG INPUT 3 7 fast Fourier transform stop frequency 4 55 fast Fourier transform function 4 54 features front panel 3 4 FET markers 4 70 FET compatibility 4 54
61. CONFIG key and it replaces STATE INTERNAL and TRACE INTERNAL under the GAVE key when SAV LOCK ON OFF is ON Pressing SAV LOCK on OFF returns the menu to its unlocked state Key Access or CONFIG maintains the minimum level for each trace point of trace C Updates each trace point if a new minimum level is detected in successive sweeps Key Access TRACE puts the analyzer into the sample detection mode and continuously places the minimum level at each trace point of trace A into trace B Once activated the function continues until turned off with MIN HOLD OFF Key Access CHANNEL MEAS Quick Reference E l 4 13 Softkey Descriptions Cable TV Analyzer Functions MK ug ON OFF MK PAUSE ON OFF MK READ PII turns on the marker counter when ON is underlined if no marker is active before MK COUNT DN OFF is pressed a marker is activated at center screen Press MK COUNT ON OFF so that OFF is underlined to turn the marker counter off Press CNT RES AUTO MAN to change the marker counter resolution to an uncoupled value Key Access reads out the average noise level referenced to a 1 Hz noise power bandwidth at the marker position If no marker is present a marker appears at the center of the screen The root mean square noise level normalized to a 1 Hz noise power bandwidth is read out The sample detector is activated Key Access MKR FCTN stops the analyzer sw
62. DEFAULT can be used to exit from the NTSC or PAL modes to return to the normal monitor output and use the default synchronization constants Key Access CONFIG Option 107 only accesses the time gate utility menu for coupling analyzer settings to the input pulsed signal parameters It also accesses the pulsed signal parameter entry menus Key Access SWEEP Quick Reference 4 37 Softkey Descriptions Cable TV Analyzer Functions Define Gate Define Time DELETE FILE NOTE Option 107 only accesses the menu for turning on and defining the gate from within the time gate utility Key Access Option 107 only accesses the menu for manipulating the time domain window in the gate utility It will automatically make the time window active and turn off the gate The trigger marker can be activated from this menu Key Access SWEEP function allows you to delete an item from analyzer memory or a file from the memory card Deleting items beginning with an underscore from analyzer memory is not recommended and may have unexpected results items beginning with an underscore are used by the analyzer DELETE POINT DELETE SEGMENT 4 38 Key Access or deletes an amplitude correction factor that was previously selected by SELECT POINT Key Access deletes the limit line entry for the selected segment number Press SELECT SEGMENT then enter the segment number to select the limit line entry for
63. EQ softkey function should always be initiated before the CAL AMPTD softkey function Key Access 4 18 Quick Reference CAL FETCH CAL FREQ CAL FREQ amp AMPTD CAL STORE cal TIMEBASE Softkey Descriptions Cahle TV Analyzer Functions retrieves stored self calibration correction factors from the last calibration saved using CAL STORE Key Access initiates a frequency self calibration routine Connect CAL OUT to the analyzer input before pressing CAL FREQ Remove the cable from the rear panel GATE INPUT before starting the self calibration routine Key Access initiates both the frequency and amplitude self calibration routines Connect CAL OUT to the analyzer input before pressing CAL FREQ amp AMPTD Remove the cable from the rear panel GATE INPUT before starting the self calibration routine Key Access stores the correction factors from the last calibration The stored correction factors are automatically retrieved when the analyzer is turned on If correction factors are not stored they will be retained only until the analyzer is turned off See the description for the CAL FETCH softkey Key Access changes the setting of the 10 MHz reference standard timebase DAC that is located on the A25 counter lock assembly This is a service calibration function and is for service use only Key Access Quick Reference 4 19 Softkey Descriptions Cable TV Analyzer Functions Config
64. FF 4 58 GATE OUTPUT 3 7 GATE TRIGGER INPUT 3 7 gate utility exit 4 51 exiting 4 59 GATE UTILITY 4 59 gate utility coupling 4 37 resolution bandwidth 4 33 sweep time 4 34 yideo bandwidth 4 34 GHIJKL 4 60 GND REF DETECTOR 4 5 4 60 graph markers 4 60 GRAT ON OFF 4 60 GRPH MKR ON OFF 4 60 guide conventions 1 5 hardkeys FREQUENCY 1 4 121 MODE 4 25 4 121 harmonically related carrier tune configuration selecting 4 61 highest peak finding next 4 78 highest signal peak 4 112 HIGH SWEEP IN OUT 3 7 HOLD 3 6 3 8 4 60 horizontal signal positioning 4 34 HP 8591C cable TV analyzer key menus 5 3 21 HP B amp W PRINTER 4 108 HP IB address 4 13 HP IB interface connector 3 7 HP Paintiet 4 80 HRC 4 61 Index 13 HUM 4 62 identify the signal FFT 4 110 IDNUM 4 8 4 62 impedance matching 4 53 incrementally related carrier tune configuration selecting 4 63 INIT FLT 4 3 4 62 initial inspection 2 4 INPUT 75 Q 3 4 input and output auxiliary control 4 15 input attenuation control 4 14 input configuration 4 13 input impedance 4 62 INPUT Z 500 7590 4 62 inserting a memory card 3 28 instrument preset 4 89 instrument state 3 4 intensity control 3 4 interface connectors 3 7 INTERNAL CARD 4 62 INTERNAL STATE 4 63 Internal Trace 4 63 key guide conventions 1 5 key menus 5 2 knob 3 4 3 6 3 8 label softkey 3 4 laserjet plots 4 87 LAST SPAN 4 64
65. OFF 4 33 coupled functions menu 4 15 coupled sweep time 4 118 coupling all functions 4 15 time gate utility 4 27 4 33 4 34 4 37 coupling video bandwidth 4 133 a A A A A A O Index 7 CPL RBW ON OFT 4 33 CPL SWP ON OFF 4 84 CPL VBW ON OFF 4 34 creating new programs 4 77 CRT HORZ POSITION 4 34 CRT VERT POSITION 4 35 DAC extra fime tune 4 137 fine tune 4 55 sweep time 4 118 DACS 4 4 4 35 data controls 3 6 3 8 data keys 3 4 3 9 data recall 4 97 DATA TO PRINTER 4 35 data transmission speed 4 16 DATEMODE MDY DMY 4 35 dBm 4 36 dBmV 4 36 dBuV 4 36 deactivate function 3 6 3 8 deactivating the active function 4 60 DEFAULT CAL DATA 4 36 DEFAULT CONFIG 4 36 default configuration 4 109 DEFAULT SYNC 4 37 Define Coupling 4 37 Define Gate 4 38 Define Time 4 38 delay GATE DELAY 4 58 delaying sweep time gate utility 4 117 DELETE FILE 4 38 delete files from memory card 4 17 DELETE POINT 4 38 DELETE SEGMENT 4 38 deleting the test plan 4 27 delta display line markers 4 125 delt marker 4 68 Dernod 4 39 DEMOD AM FM 4 89 DEMOD ON OFF 4 39 demodulation 4 389 AM 4 39 dwell time 4 43 FM 4 39 FM gain 4 56 Index 8 FM offset 4 56 FM span 4 56 on and off 4 39 Speaker on off 4 112 squelch 4 112 DEPTH MOD 4 39
66. P IB interface the appropriate interface address HP IB ADRS XX in place of the baud rate also appears on the screen NOTE Record the firmware date and keep it for reference If you should ever need to call Hewlett Packard for service or with any questions regarding your cable TV analyzer it will be helpful to have the firmware date readily available POWTTPUTPPEPENRRRRERRRRRRRERRRARRRRRRRRERATERER Getting Started 2 18 Preparing for Use Preparing Your Cable TV Analyzer for Use Step 6 Perform the frequency and amplitude self calibration routines 1 To meet cable TV analyzer specifications allow a 30 minute warmup before attempting to make any calibrated measurements Be sure to calibrate the cable TV analyzer only after the cable TV analyzer has met the operating temperature conditions 2 Connect the 75 Q coaxial cable between the front panel CAL OUT and the INPUT 75 Q connector NOTE Remove all connections to the GATE TRIGGER INPUT rear panel connector before performing the self calibration routines 3 Perform the frequency and amplitude self calibration routine by pressing and CAL FREQ amp AMPTD During the frequency routine CAL SWEEP CAL FREQ and CAL SPAN and CAL FM GAIN OFFSET are displayed as the sequence progresses During the amplitude routine CAL AMPTD CAL 3 dB BW CAL ATTEN and CAL LOGAMP are dis
67. R d ENTER W m MARKER ON ENTER PR DONE CPL RBW ON OFF CLEAR PARAM n i bed p ort uti te SWEEP DELAY U al T WINDOW SYP T n Menu Opiton 107 erty MARKER ON Appears i TE CTh ede 2pnO MABKER EDGE is s f gena MARKER CLEAR WRITE A MAX HOLD A 19 VIEW A AVS ON OFF MT TOR PK SP HG to MIN HOLD C when is selected 5 20 Quick Reference Key Menus Cable TV Analyzer Functions TRIG ZP CONT SOL XTERNAL NTSC SYNC CRD TV TRIS 9 ry TRIG VERT IN iint SYNC NEG P PAL iY Stondar 7 SECAM L Previous Menu WINDOWS NEXT Taggies between P windows if f NE PK RIGHI windows arg on Iuli s ee displays NE PK LEFT if windows ore an en 5i WINDOWS OFF Quick Reference 5 21 Key Menus Cahle TV Analyzer Functions Index Index 10 MHz reference DAC setting 4 19 10 MHz REF OUTPUT 3 7 10V REF DETECTOR 4 4 4 6 10V REF DETECTOR 4 4 4 6 120 kHz EMI BW 4 7 200 Hz EMI BW 4 7 2v REF DETECTOR 4 4 4 6 3 dB bandwidth measurement 4 77 old 9 kHz EMI BW 4 7 A B 4 7 i E A B A ON OFF 4 7 E A C 4 7 ABCDEF 4 8 ABORT 4 8 accessories shipped with the cable TV analyzer 2 5 ACPGRAPH 4 8 active function 3 15 active function block 3 4 active function clearing 4 60 addressing printer 4 94 address of analyzer 4 13 address of plotter 4 85 adjacent channel power 4 8
68. TV analyzer display The top and bottem of the cable TV analyzer display are compressed slightly so that all of the information can be fit into the size required by the MONITOR QUTPUT 314 Getting Started Menu and Softkey Overview The keys labeled AMPLITUDE FREQUENCY CAL and MER are all examples of front panel keys Pressing most front panel keys accesses menus of functions that are displayed along the right side of the display These menus are called softkey menus Softkey menus list functions other than those accessed directly by the front panel keys To activate a function on the softkey menu press the uniabeled key immediately to the right of the annotation on the screen The unlabeled keys next to the annotation on the display screen are called softkeys Front panel keys are designated with a box around the key label for example AMPLITUDE softkeys are designated by shading on the key label for example REF LVL The softkeys that are displayed depend on which front panel key is pressed and which menu level is enabled If a softkey function s value can be changed it is called an active function The function label of the active function appears in inverse video For example press AMPLITUDE This calls up the softkey menu of related amplitude functions Note the function labeled REF LVL appears in inverse video REF LVL also appears in the active function block indicating that it is the active amplitu
69. UT 3 7 TV TRIG VERT INT 4 130 T WINDOW RES BW 4 124 T WINDOW SWP TIME 4 124 two display windows 4 136 type of limit line 4 107 U underscore character 4 137 units amplitude 4 11 UPDATE TIMEFREQ 4 130 upper and lower limit lines editing 4 45 user defined center freq 4 131 user defined span 4 131 User Menus 4 130 USR CH 0 CNTR FRQ 4 131 USR CH 0 SPAN 4 181 Index 30 V V 4 182 variable cataloging 4 21 VBW RBW RATIO 4 132 vertical signal positioning 4 35 VHS video output 4 119 VID AVG ON OFF 4 132 TD BW AUTO MAN 4 133 VIDEO 4 133 video averaging 4 132 video bandwidth 4 133 video bandwidth coupling 4 15 gate utility 4 34 video bandwidth o resolution bandwidth ratio 4 132 VIEW A 4 133 VIEW B 4 134 VIEW C 4 134 view last test results 4 135 visual carrier 4 25 VOL INTEN 3 4 VOLTAGE SELECTOR 3 7 voltage selector switch 2 6 Volts 4 135 volume 4 65 volume control 3 4 W warmup 2 14 warmup time 3 21 Watts 4 135 when self calibration is needed 3 26 windows NEXT 4 77 ON 4 136 switching between 4 77 switching time and frequency windows 4 130 ZOOM 4 138 windows keys 9 4 WINDOWS OFF 4 135 write protect switch 3 30 Index 31 X XFINE TUNE DAC 4 5 4 137 Y YES 4 137 YZ Spe Clear 4 137 7 ZERO MARKER 4 1
70. V analyzer is the fuse in use If the fuse is defective or missing install a new fuse in the proper position and reinsert the fuse container Getting Started 2 9 WARNING 2 10 Getting Started Preparing for Use Preparing Your Cable TV Analyzer for Use Step 4 Connect the power cable The cable TV analyzer is equipped with a three wire power cable in accordance with international safety standards When connected to an appropriate power line outlet this cable grounds the instrument cabinet Failure to ground the cable TV analyzer properly can result in personal injury Before turning on the cable TV analyzer you must connect its protective earth terminals to the protective conductor of the main power cable insert the main power cable plug only into a socket outlet that has a protective earth contact DO NOT defeat the earth grounding protection by using an extension cable power cable or autotransformer without a protective ground conductor If you are using an autotransformer make sure its common terminal is connected to the protective earth contact of the power source outlet Socket Various power cables are available to connect the cable TV analyzer to the types of AC power outlets unique to specific geographic areas The cable appropriate for the area to which the cable TV analyzer is originally shipped is included with the unit You can order additional AC power cables for use in different areas Table 2 3 lists the a
71. all selected tests for the current channel Key Access SYSTE allows you to clear the current test plan Key Access SYSTEM MEAS erases any data previously stored in trace A and continuously displays any signals during the sweep of the analyzer This function is activated at power on and by pressing PRESET Key Access TRACE erases any data previously stored in trace B and continuously displays any signals detected during the sweep ofthe analyzer This function is activated at power on and by pressing PRESET Key Access TRACE Quick Reference 4 27 Softkey Descriptions Gable TV Analyzer Functions CLEAR WRITE C erases any data previously stored in trace C and continuously displays any signals detected during the sweep of the analyzer This function is activated at power on and by pressing PRESET Key Access rrr 0 Ll AUTO MAN allows the resolution of the marker counter to be selected B dn manually or auto coupled The marker counter has a em resolution range of 10 Hz to 100 KHz Key Access CNTL A Quy makes the auxiliary interface control line A output high or low TTL Key Access CNTL B 0 1 makes the auxiliary interface control line B output high or low TTL Key Access CNTL C DE EE makes the auxiliary interface control line C output high or l tow TTL Key Access CNTL D Dp makes the auxiliary interface control line D output high or low TTL Key Access AUX CTRL eeu
72. alog display mode Limit testing can be done but the limit lines will not be displayed Key Access PI Quick Reference 4 65 Softkey Descriptions Cable TV Analyzer Functions turns the limit line testing and if LUT DISP AUTO is selected turns the display of the limit lines on and off When limit line testing is enabled every measurement sweep of trace A is compared to the limit lines If trace A is at or within the bounds of the limit lines LIMIT PASS is displayed If trace A is out of the limit line boundaries LIMIT FAIL is displayed Key Access DISPLAY LOAD FILE loads a file from the memory card into analyzer memory NOTE Use of the LOAD FILE softkey is not recommended for recalling limit line tables or amplitude correction factors stored in analyzer memory Key Access OT Pressing after the analyzer has been placed in the remote mode places the analyzer in the local mode and enables front panel control During remote operation R appears in the lower right corner of the screen indicating remote and talk A T or L may appear during remote operation indicating talk or listen Pressing the key removes the R symbol in the lower right corner Key Access CONFIG 4 66 Quick Reference MAIN COIL DR Main Menu MAIN SPAN MAN TRK ADJUST MARKER ON OFF S
73. and the coordinate point of the next segment producing limit line values for all frequencies between the two points Key Access allows you to turn the TV sound on and off This feature is the same as the TV RECEIVER mode of operation except that it is accessed from a front panel hardkey Key Access AUX CTRL activates the SPAN function and accesses the frequency span functions Key Access SPAN Quick Reference 4 111 Softkey Descriptions Cahle TV Analyzer Functions SPAN SPEAKER ON OFF SPECTRUM ANALYZER SQUELCH 4 112 finds the highest signal peak on screen If a marker is not already on the peak it places a marker on it turns on the marker track function and activates the span function Pressing SPAN ZOOM performs the routine similar to pr essing the following keys PEAK SEARCH MKR FCTN MK TRACK ON OFF ON and SPAN Key Access turns the internal speaker on and off The volume from the speaker is controlled by the panel volume control knob and FM GAIN when using FM demodulation There is no output from the Speaker unless demodulation is turned on Pressing PRESET sets SPEAKER ON OFF to ON Key Access AUX CTRL sets the analyzer to the spectrum analyzer operating mode and accesses the PRESET SPECTRUM softkey function Key Access MODE or PRESET adjusts the squelch level The squelch level mutes weak signals and passes strong signals The squelch level affects the a
74. annel format IRC For incrementally related carriers HRC For harmonically related carriers T For downstream channels The default value for the channel tuning configuration is the standard STD channel format In addition the USR CH O CNTR FRQ and USR CH O SPAN softkeys allow you to define the center frequency and span for a user defined channel This channel is then accessed by selecting channel 0 zero The default settings are for channel 2 STD These settings are stored in non volatile analyzer memory This means that the analyzer retains the selections even when power is turned off until a new selection is made Press CABLE TV ANALYZER Setup to access Channel Tuning Key Access CABLE TV ANALYZER initiates the Chroma Luma Delay Inequality measurement Quick Reference Clear CLEAR PARAM CLEAR TESTS CLEAR TST PLAN CLEAR WRITE A CLEAR WRITE B Softkey Descriptions Cahle TV Analyzer Functions clears the current screen title or prefix This softkey is accessed under the YZ d spe Clear softkey when using Change Title or Change Prefix Key Access CAL CONFIG DISPLAY RECALL or clears all of the pulse parameters in the gate utility It sets the value of pulse width pulse repetition interval and reference edge to zero and turns off the coupling of the pulse parameters to the resolution bandwidth video bandwidth and sweep time Key Access SWEEP allows you to clear
75. annel numbers tests scrambling status channel tuning configuration quiet line number frequency response lme number test signal line number and field selection are saved in the test plan the location code the temperature the selection of CTB testing and the setting for an external pad EXT PAD YES NO are stored in nonvolatile analyzer memory and are retained until changed Pressing CABLE TV ANALYZER SYSTEM MEAS More i of oA Save TstPlan accesses SAVE TO INT MEM Key Aecess SYSTEM M Quick Reference S VE TO MEM CRD SAVE TRB TO INT Softkey Descriptions Cable TV Analyzer Functions allows you to store the on screen test results to a RAM card Press CABLE TV ANALYZER SYSTEM MEAS Measure Now Yes or No DUMP TO SCREEN to access STORE TO CARD Key Aecess SYSTEM MEAS stores trace B in internal memory This function simplifies saving either a reference trace or a test result to internal memory This trace can also be saved to a memory card using procedures provided in the analyzer user s guide Key Access CHANNEL MEAS Quick Reference 4 103 Softkey Descriptions Cable TV Analyzer Functions Save TstPlan scum d LOG LIN SECAM L allows you to access SAVE TO INT MEM and SAVE TO MEM CRD Pressing CABLE TV ANALYZER SYSTEM MEAS 3j ets 2 Create TstPlan ACCESSES Save TstPlan scales the vertical graticule divisions in logarithmic units when LOG i
76. at CTB test Hum test Depth of modulation test Color tests chroma luma delay inequality differential gain differential phase In channel frequency response test I M deviation test Cross modulation test System frequency response test View ingress test View co channel test Each measurement typically performs the following tasks sets the analyzer to the state required for making the measurement Prompts for any adjustments or values Performs the measurement Displays the measurement results Provides the ability to print the measurement results for FCC proof of performance Refer to the HP 8591C Cable TV Analyzer Cable TV Measurements User s Guide for detailed information about cable TV measurements na CPJJ H D F Cn VPJ PEOR 3 16 Getting Started CAUTION Making a Measurement Do not exceed the maximum input power The maximum input power for the HP 8591C is 72 dBmV 0 2 watt continuous 100 VDC with 10 dB or more attenuation Let s begin using the cable TV analvzer by measuring an input signal Since the 300 MHz calibration signal CAL OUT is readily available we will use it as our input signal You cannot hurt the cable TV analyzer by using the calibration signal and pressing any of the keys described in this section Don t be afraid to play with the knob step key
77. ata for trace B and removes it from the screen The trace B register will not be updated as the analyzer sweeps Key Access TRACE stores the araplitude data for trace C and removes it from the screen The trace C register will not be updated as the analyzer sweeps Key Access TRACE deletes all the files from the memory card Pressing BLANK CARD displays the message If you are sure press key again to purge data Press BLANK CARD again if you want to delete all files from the memory card Key Access Quick Reference 4 17 Softkey Descriptions Cable TV Analyzer Functions activates the resolution bandwidth function and accesses the softkeys that control the bandwidth functions RES BW AUTO MAN VID BW AUTO MAN VBW RBW RATIO VID ava ON JFF and the EMI BW Meny Also see the RES BW AUTO MAN softkey description CAL accesses the softkey menus used for the self calibration 0 ps service diagnostics and service calibration functions For more information about self calibrating the analyzer see Improving Accuracy with Self Calibration Routines in Chapter 2 AMPTD initiates an amplitude self calibration routine Connect CAL OUT to the analyzer input before pressing CAL AMPTD Remove the cable from the rear panel GATE INPUT before starting the self calibration routine NOTE if the frequency calibration and amplitude calibration self calibration routines are beth used the CAL FR
78. cesses the softkey menu for selecting screen title or prefix characters M through R Key Access CAL CONFIG DISPLAY RECALL or changes the softkey menus for the analyzer mode and other modes of operation when SPECTRUM ANALYZER located under PRESET and PRESET SPECTRUM are selected respectively Other modes are available using the downloadable measurement personalities The HP 85721A Cable Television Measurements Personality is an example of these modes Consult the documentation accompanying the personality for information about these other modes of operation Quick Reference Monitor N dB PTS ON OFF NEW EDIT Softkey Descriptions Cahle TV Analyzer Functions allows you to access the TV receiver mode This feature is the same as the TV RECEIVER mode of operation except that it is accessed from a front panel hardkey Press AUX CTRL to access Monitor TV Key Access AUX CTRL automatically places two markers at points N dB from the highest point on the highest displayed signal and determines the frequency difference between the two markers N dB is the active function and the value of N is set by the user The measurement defaults to 3 dB when it is first turned on The measurement runs continuously re executing at the end of each sweep Key Access MEAS USER Refer to the HP 8590 E Series and L Series Spectrum Analyzers and HP 8591C Cable TV Analyzer Programmer s Guide
79. charges to return the product to Buyer However Buyer shall pay all shipping charges duties and taxes for products returned to HP from another country HP warrants that its software and firmware designated by HP for use with an instrument will execute its programming instructions when properly installed on that instrument HP does not warrant that the operation of the instrument or software or firmware will be uninterrupted or error free iv Limitation of Warranty The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer Buyer supplied software or interfacing unauthorized modification or misuse operation outside of the environmental specifications for the product or improper site preparation or maintenance NO OTHER WARRANTY IS EXPRESSED OR IMPLIED HP SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE P premarin Exclusive Remedies THE REMEDIES PROVIDED HEREIN ARE BUYER S SOLE AND EXCLUSIVE REMEDIES HP SHALL NOT BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER BASED ON CONTRACT TORT OR ANY OTHER LEGAL THEORY Exclusive Remedies Contents l About This Guide Other HP 8591C Cable TV Analyzer Documentation Documentation Options How to Order Guides Before You Begin Conven
80. ck Reference Softkey Descriptions Cahle TV Analyzer Functions Trace Card begins the process used to save trace data limit line tables or amplitude correction factors on the memory card Key Access SAVE Trace Intrnl accesses a softkey menu that allows you to select the DW item to be stored in analyzer memory the trace to be saved trace A trace B or trace C limit line tables or amplitude correction factors Key Access Track Option 011 only Gen displays softkey menus for use with a built in tracking generator Key Access AUX CTRL TRACKING Option O11 only PEAK activates a routine that automatically adjusts the tracking adjustment to obtain the peak response of the tracking generator on the analyzer display NOTE For tracking peak to function properly the tracking generator must be connected to the analyzer Before making a stimulus response measurement care must be taken to maximize the tracking adjustment of the tracking generator to ensure maximum available dynamic range Key Access AUX CTRL Quick Reference 4 127 Softkey Descriptions Cabie TV Analyzer Functions accesses softkeys that let you select the sweep mode and trigger mode Also see Screen Annotation in Chapter 1 of this guide NOTE With some delayed trigger functions for example external or TV triggering the softkey menu is not updated until after the trigger has occurred TRIG MKR Option 107 only
81. cule is the positive deviation set by FM GAIN The bottom graticule is the negative deviation set by FM GAIN The range for FM gain is from 10 kHz to 500 kHz The default value is 100 kHz Key Access AUX CTRL or adjusts the horizontal trace for center screen with no modulation on the carrier This is a service diagnostic function and is for service use only Key Access displays the FM SPAN signal from the span dividers on the AT analog interface assembly This is a service diagnostic function and is for service use only Key Access formats a card in logical interchange format LIF This is the same as ERASE MEM CARD Key Access CONFIG Quick Reference FREQ DIAG FREQ DISC NORM OFF FREQ OFFSET FREQUENCY Softkey Descriptions Cable TV Analyzer Functions activates the trigger condition that allows the next sweep to start as soon as possible after the last sweep Key Access TRIG displays in real time frequency diagnostic information for the LO section This is a service diagnostic function and is for service use only Key Access indicates the status of the frequency discriminator as a function of LO span This is a service diagnostic function and is for service use only Key Access allows the user to input a frequency offset value that is added to the frequency readout to account for frequency conversions external to the analyzer Key Access FREQUENCY activates the center freque
82. d by setting the spectrum analyzer s reference level offset to 5 8 dB If you are using a spectrum analyzer with 50 Q input impedance but are not using an external matching pad the cable TV analyzer mode will compensate for most of the impedance mismatch but amplitude measurements can have up to 0 2 dB error caused by the uncompensated mismatch over the frequency range This function is set to NO when the HP 857214 is loaded into analyzer memory In spectrum analyzer memory the setting of the external pad function entry is not stored with the current test plan in plans 1 through 5 The setting of the external pad function is stored in nonvolatile spectrum analyzer memory however Storing the setting in nonvolatile memory means that once the external pad function is set to YES it will remain set to YES until you change the setting or delete the HP 85721A program from analyzer memory Press CABLE TV ANALYZER Setup Analyzer Input to access EXT PAD YES ND Key Access CABLE TV ANALYZER activates the trigger condition that allows the next sweep to start when an external voltage connected to EXT TRIG INPUT on the rear panel passes through approximately 1 5 V The external trigger signal must be a 0 V to 5 V TTL signal Key Access Quick Reference l 4 53 Softkey Descriptions Cahle TV Analyzer Functions EXTERNAL PREAMPG adds a positive or negative preamplifier gain value which is subtracted from the displa
83. de function and can now be changed using any of the data entry controls A softkey with ON and OFF in its label can be used to turn the softkey s function on or off To turn the function on press the softkey so that ON is underlined To turn the function off press the softkey so that OFF is underlined A function with AUTO and MAN in the label can either be auto coupled or have its value manually changed The function s value can be changed manually by pressing the softkey until MAN is underlined and then changing its value with the numeric keypad knob or step keys To auto couple a function press the softkey so that AUTO is underlined A summary of all front panel keys and their related softkeys can be found in the HP 8591C Cable TV Analyzer Spectrum Analyzer Reference User s Guide Getting Started 3 15 Cable TV Measurements and System Monitor Personality The HP 857214 Cable TV Measurements and System Monitor Personality is a downloadable program DLP consisting of measurement routines useful for cable television applications The cable TV RF video measurements personality is installed in the HP 8591C Cable TV Analyzer The tests included in the cable TV measurements and system monitor personality are Visual carrier level and visual to aural level difference test Visual carrier frequency and visual to aural frequency difference test Carrier to noise test Composite second order CSO test Composite triple be
84. deletion Key Access DISPLAY Quick Reference Demod DEPTH MOD DEMOD AM FM DEMOD DN OFF DESKJET 310 550C DESKJET 540 Softkey Descriptions Cable TV Analyzer Functions accesses the softkeys controlling demodulation functions speaker volume squelch level FM gain and dwell time Key Access AUX CTRL initiates the Depth of Video Modulation measurement allows selection of amplitude AM or frequency FM demodulation Key Access AUX CTRL turns the AM or FM demodulation on and off Key Access AUX CTRL selects the HP DeskJet 310 or 550C for color printing Use this function if you have one of these color printers This softkey can be accessed by pressing CONFIG then Set Colr Printer Key Access selects the HP DeskJet 540 for color printing Use this function if you have this color printer This softkey can be accessed by pressing CONFIG then Set Colr Printer Front Panel Key Access CONFIG Quick Reference 4 39 Softkey Descriptions Cahle TV Analyzer Functions DIF PHAZ DISPLAY brspiat CAL DATA DISPL Y CARD 4 40 selects between positive peak sample and negative peak detection When sample detection is selected SMPL appears in the upper left corner of the screen In sample mode the instantaneous signal value at the present display point is placed in memory Sample detection is activated automatically for noise level mark
85. delta amplitude value The middle amplitude value and the delta amplitude value create an upper and lower limit line segment The default value is 0 Key Access DISPLAY Quick Reference 4 105 Softkey Descriptions Cable TV Analyzer Functions s LEct FREQ LWR AMPL SELECT MID AMPL SELECT POINT SELECT PREFIX SELECT SEGMENT SELECT 4 106 allows you to enter the frequency value for a limit line segment or for an amplitude correction point Key Access or allows you to enter the amplitude value for the lower limit line segment Key Access allows you to enter the middle amplitude value The middle amplitude value and the delta amplitude value create upper and lower limit line segments Key Access allows you to create or edit an amplitude correction factor data point Key Access allows you to select an already existing prefix of a cataloged file and changes the current prefix to this selected prefix Key Access RECALL or SAVE allows you to create or edit a limit line segment Key Access DISPLAY allows you to enter the time value for a limit line segment Key Access DISPLAY Quick Reference SELECT TYPE SELECT UPR AMPL Service Cal Service Diag Softkey Descriptions Cable TV Analyzer Functions accesses the softkey menu used to select the limit line type of line Key Access allows you to enter the amplitude value for the upper limif li
86. e SAVE EDIT softkey The DLP editor memory remains intact when the instrument is preset and when it is powered off Refer to the HP 8590 E Series and L Series Spectrum Analyzers and HP 8591C Cable TV Analyser Programmer s Guide for more information Key Access or allows you to edit the current limit line tables by accessing Edit Upper Edit Lower Edit Up Low and Edit Mid Delt Use PURGE LIMITS under any of the above edit menus to dispose of the current limit line table Key Access DISPLAY allows you to view or edit the lower limit line table Key Access DISPLAY allows you to view or edit the upper and lower limit line tables simultaneously Key Access DISPLAY allows you to view or edit the upper and lower limit line tables simultaneously Key Access DISPLAY allows you to view or edit the upper limit line table Key Access DISPLAY Quick Reference 4 45 Softkey Descriptions Cable TV Analyzer Functions Editor EMI BW Menu ENTER ENTER BY CHANNEL ENTER BY RANGE 4 46 selects upper or lower limit line tables It switches to the limit line table that is not currently being edited Key Access DISPLAY accesses the menu of down loadable program DLP editor softkeys Refer to the HP 8590 E Series and L Series Spectrum Analyzers and HP 8591C Cable TV Analyzer Programmer s Guide for more information Key Access RECALL or accesses the functions that set t
87. e the peak search functions without initiating a new peak search Key Access automatically places a marker on the highest amplitude of a trace displays the marker s amplitude and frequency It also accesses the menus of marker peak functions including the peak table functions Quick Reference 4 81 Softkey Descriptions Cable TV Analyzer Functions PEAK ZOOM PICTURE ON OFF PIX esi ON OFF 4 82 finds the highest displayed signal and narrows the span to a value selected by the user Key Access allows you to turn the TV picture on and off This feature is the same as the TV RECEIVER mode of operation except that it is accessed from a front panel hardkey Press AUX CTRL Monitor TV to access PICTURE ON OFF Key Access AUX CTRL allows you to view the TV picture and listen to the sound simultaneously This feature allows you to quickly identify picture quality problems such as noise distortion hum and ingress Select a channel by pressing CHANNEL SELECT entering a TV channel number then pressing PIX amp SND ON OFF To exit this mode press any softkey Press TV RECEIVER to access PIX amp SND ON OFF Quick Reference PK M DE DL NRM PK SORT FRQ AMP PK TABLE ON OFF Softkey Descriptions Cahle TV Analyzer Functions select which peaks will be listed in the peak table to include all peaks or to exclude the peaks that are either above or below the d
88. ectively delete stored programs or variables fram analyzer memory Key Access 4 48 Quick Reference Softkey Descriptions Cahle TV Analyzer Functions ERASE MEM ALL allows you to purge all user state registers all user trace UE registers all mode registers the editor buffer Group delay normalization all DLP memory and all microprocessor stack data NOTE ERASE MEM ALL ignores the state of the SAV LOCK So even if STATES and TRACES are locked they will still be erased by ERASE MEM ALL Key Access CONFIG ERASE MEM CARD allows you to dispose of any data or programs stored on the ae EE memory card by formatting it NOTE Use DELETE FILE to selectively delete stored programs or variables from analyzer memory Key Access CONFIG Quick Reference 4 49 Softkey Descriptions Cahle TV Analyzer Functions ERASE STATEALL allows you to purge all the user state registers 1 through 9 NOTE e if SAVE LOCK ON OFF is set to ON this function is disabled Use DELETE FILE to selectively delete stored programs or variables from analyzer memory Key Access ERASE o TRACEALL allows you to purge all the user trace registers 0 through TRCMEM NOTE e if SAVE LOCK DN OFF is set to GN this function is disabled Use DELETE FILE to selectively delete stored programs or variables from analyzer memory Key Access CONFIG EP LQ570 SML LRG sets the analyzer to be co
89. ed on the memory card label This will help you to remember when the battery should be replaced 3 30 Getting Started Quick Tour Memory Card Insertion and Battery Replacement BATTERY CLIP SROOVE WRITE PROTECT SWITCH pul2ic Figure 3 10 Memory Card Battery Replacement Getting Started 3 31 Analyzer Battery Information The HP 8591C cable TV analyzers use a 3 6 V lithium battery to enable the cable TV analyzer memory to retain data The date when the battery was installed is on a label on the rear panel of the cable TV analyzer See Figure 3 11 The minimum life expectancy of the battery is 8 years at 25 C or 1 year at 55 C If you experience problems with the battery or the recommended time period for battery replacement has elapsed see Returning the Cable TV Analyzer for Service in Chapter 9 of the HP 8591C Cable TV Analyzer Spectrum Analyzer Reference User s Guide l If you wish to replace the battery yourself you can purchase the service documentation that provides all necessary test and maintenance information The battery is soldered onto the cable TV analyzer processor board You can order the service documentation for an HP 8591C cable TV analyzer through your HP Sales and Service office The documentation is described under Options in the front of the HP 8591C Cable TV Analyzer Spectrum Analyzer Reference User s Guide After replacing the cable TV analyzer batte
90. eep at the marker position for the duration of the dwell time The dwell time can be set from 2 milliseconds to 100 seconds Key Access MKR FCTN selects the marker readout to be displayed in signal frequency sweep time the inverse of the sweep time or the period that is the inverse of the frequency When the instrument is in zero span the frequency type readout cannot be selected Key Access Quick Reference Softkey Descriptions Cahle TV Analyzer Functions MK TABLE ON OFF provides a list of the four available markers that is updated diio at the end of each sweep or when a marker is used The marker data can be displayed in different formats It can be in absolute or delta frequency and amplitude formats There is also a delta display line format which can be accessed using the TABLE ADL NRM softkey The marker table is not saved with the and RECALL keys Key Access MK TRACE AUTO ABC assigns a marker to a trace Pressing MK TRACE AUTO ABC mM will activate a marker on trace A if there are no markers turned on If a marker is currently active press MK TRACE AUTO ABC until A B or C are underlined The active marker will be moved to the selected trace Selecting the AUTO mode will move the marker to the trace that is automatically selected The selection order is to first look for a trace in the clear write mode in the order of trace A then trace B then trace C If no traces are currently being writt
91. efore operating this instrument Caution denotes a hazard It calls attention to a procedure that if not correctly performed or adhered to could result in damage to or destruction of the instrument Do not proceed beyond a caution sign until the indicated conditions are fully understood and met Warning denotes a hazard It calls attention to a procedure that if not correctly performed or adhered to could result in injury or loss of life Do not proceed beyond a warning sign until the indicated conditions are fully understood and met 1 6 Getting Started WARNING CAUTION About This Guide Before You Begin General Safety Considerations e Before this instrument is switched on make sure it has been properly grounded through the protective conductor of the ac power cable to a socket outlet provided with protective earth contact Any interruption of the protective grounding conductor inside or outside the instrument or disconnection of the protective earth terminal can result in personal injury e There are many points in the instrument which can if contacted cause personal injury Be extremely careful Any adjustments or service procedures that require operation of the instrument with protective covers removed should be performed only by trained service personnel e No operator serviceable parts inside Refer servicing to qualified personnel To prevent electrical shock do not
92. el on the screen Press AMPLITUDE REF LEVEL 0 dBm appears in the active function block The REF LVL softkey label appears in inverse video to indicate that reference level is the active function The reference level is the top graticule line on the display and is set to 0 0 dBm Changing the value of the reference level changes the amplitude level of the top graticule line If desired use the reference level function to place the signal peak on the screen using the knob step keys or number units keypad Marker functions determine the frequency and amplitude of a signal Figure 3 6 demonstrates the relationship between center frequency and reference level The box in the figure represents the cable TV analyzer screen Changing the center frequency changes the horizontal placement of the signal on the screen Changing the reference level changes the vertical placement of the signal on the screen Increasing the span increases the frequency range that appears horizontally on the screen les PREPARARE 3 18 Getting Started Quick Tour Making a Measurement 7 Set the marker You can place a diamond shaped marker on the signal peak to find the signal s frequency and amplitude To activate a marker press the MKR key located in the MARKER section of the front panel The MARKER NORMAL label appears in inverse video to show that the marker is the active function Turn the knob to place the marker a
93. ely stable for example a lab environment use CAL FREQ amp IMPTD monthly After being turned off overnight the cable TV analyzer will need to warm up but should not require self calibration To achieve optimal amplitude accuracy for relative measurements a Keep the cable TV analyzer in a stable environment b Use CAL FREQ amp AMPTD before beginning the first measurement c Keep the cable TV analyzer turned on between measurements d Do not use CAL FREQ amp AMPTD before subsequent measurements the amplitude drift is normally smaller than the self calibration uncertainty If you change the input signal for EXT REF IN run the frequency and amplitude self calibration routines using CAL OUT Amplitude calibration is required to improve IF centering If accurate self calibration is needed temporarily in a different environment use CAL FREQ amp AMPTD but do not press CAL STORE The temporary cor rection factors will bie used until the cable TV analyzer is turned off or until CAL FETCH is pressed 3 26 Getting Started Printing or Plotting You may wish to obtain a permanent record of data displayed on the cable TV analyzer screen This can be done using the COPY key of the analyzer and a printer or plotter Refer to the HP 8591C Cable TV Analyzer Spectrum Analyzer Reference User s Guide for more information about printing or plotting m
94. en it will select a trace in the view store mode again in the order of trace A B then C Key Access MK TRACK QN OFF moves the signal that is nearest to the active marker to the diis center of the screen and keeps the signal there MKR TRK or CNTR TRK appears in the upper right corner of the display An may appear in the upper right corner of the display while the analyzer is verifying that it has the correct signal Key Access MKR FCTN AHORA NOIR IRAE PRU ETE OPER AHSAN E EE E Quick Reference 4 75 Softkey Descriptions Cable TV Analyzer Functions MKR GK MKR FCTN accesses the marker control softkeys that select the type and number of markers and turn them on and off Markers are diamond shaped characters that identify points of traces and allow the traces to be manipulated and controlled on the screen During manual operation four markers may appear on the display simultaneously only one can be controlled at a time The marker that is controlled is called the active marker Pressing activates the MARKER NORMAL softkey read marker to accesses the softkeys used for the transfer of marker information directly into other functions accesses the marker function softkevs These softkeys can be used to access the marker table and to turn on marker functions for tracking the signal and counting its frequency Noise markers and the marker pause function are also accessed under MKR FCTN ac
95. en you press TODAY S TIMEDATE the analyzer uses the time and date setting of the analyzer If the date or time setting of the analyzer is incorrect see If the wrong date or time is displayed in Chapter 4 of the HP 8591C Cable TV Analyzer Cable TV Measurements User s Guide Press CABLE TV ANALYZER SYSTEM MEAS TODAY S TIMEDATE T WINDOW Option 107 only RES BW changes the resolution bandwidth in the time domain window of the gate utility Key Access T WINDOW Option 107 only SWP TIME changes the sweep time in the time domain window of the PE gate utility and re scales the gate markers Key Access SWEEP mem t a rarer PT E P aaa a e TVA NAI ARPA PIU 4 124 Quick Reference Softkey Descriptions Cable TV Analyzer Functions TABLE ADL NRM switches the marker table between the normal marker 4 formats and the delta display line format The marker information can be displayed in absolute amplitude and frequency It can also be displayed in delta amplitude and frequency using one marker as the reference These are normal marker modes Key Access MKR FCTN THRESHLD ON OFF sets a lower boundary to the active trace The threshold line clips signals that appear below the line when this function is on The boundary is defined in amplitude units that correspond to its vertical position when compared to the reference level Key Access DISPLAY Time Date acc
96. enuation Center frequency CF step size Coupied functions Mass storage device card or internal Detector Display lina level Frequency offset Limitiine testing LIMIHI and LIMILO log scale Marker counter Marker counter resolution Markers Mixer level Operating made Reference level Reference level offset Reference level position Resolution bandwidth Span 4 90 Quick Reference off off default values on 10 dB fauto coupled Refer to Table 4 5 10 of span all set to AUTO INTERNAL positive peak 2 5 graticule divisions below reference level display off 0H off cleared 10 dB division off auto couplec off 39 dBmV analyzer 48 dBmV in power on units 0 dB top 8th graticule 3 MHz lauto coupted Refer te Table 4 5 Softkey Descriptions Cahle TV Analyzer Functions Table 4 6 Common Preset Conditions continued SRQ mask Start Frequency Stop Frequency actal 50 Refer to Table 4 5 Refer te Table 4 5 unaffected State registers 1 8 Sweep Threshold level centinuous one graticule above baseline display off Titlg cleared Trace A clear write Trace B store blank Trace C store blank at reference level Trace registers unaffected Trigger free run VBW RBW ratio 0 3 Video averaging off Video bandwidth 1 MHz laute coupled Quick Reference 4 91 Softkey Descriptions Cable TV Anal
97. ers IRC harmonically related carriers HRC and T format The channel tuning configuration selection is selected independently of the test plan and is not stored with the test pian The analyzer retains the channel tuning configuration selection even when power is turned off until a new selection is made access IRC Key Access CABLE TV ANALYZER Quick Reference 4 63 Softkey Descriptions Cable TV Analyzer Functions LAST SPAN Lines Lint LINES LIHITS FIX REL 4 64 changes the analyzer frequency span to the previous span setting Key Access accesses the limit line menus Key Access DISPLAY When accessed by SAVE pressing LIMIT LINES stores the current limit line tables in analyzer memory or on the memory card When accessed by RECALL pressing LIMIT LINES recalls limit line tables from analyzer memory or the memory card See To Save a Limit Line Table or Amplitude Correction Factors or To Recall Limit Line Tables or Amplitude Correction Factors in Chapter 3 of the HP 8591C Cable TV Analyzer Spectrum Analyzer Reference User s Guide for more information Key Access or allows you to choose fixed or relative type of limit lines The fixed FIX type uses the current limit line as a reference with fixed frequency and amplitude values The relative REL setting causes the current limit line value to be relative to the displayed center frequency and reference level amplitude va
98. ers during video averaging and for FFT measurements Key Access initiates the differential gain differential phase measurement accesses softkeys that include the HOLD key and limit line menus and activate the display line threshold and analog display mode They allow title and prefix entry and control the display of the graticule and screen annotation displays the current correction factor data generated by the frequency and amplitude self calibration routines This is a service diagnostic function and is for service use only Key Access saves the current analyzer display image on the memory card for viewing or copying later It does not save the analyzer state or trace so it cannot be used to restore an instrument to the conditions at the time the image was saved Key Access SAVE mmm ats TUN Quick Reference DISPLAY CNTL I Dispose User Mem NOTE Softkey Descriptions Cable TV Analyzer Functions displays the status of the auxiliary connector input control line f on the analyzer screen high 1 orlow 0 in TTL Key Access AUX CTRL accesses the softkeys ERASE MEM CARD ERASE DLP MEM ERASE STATEALL ERASE TRACEALL and ERASE MEM ALL which are used to erase the user programs and variables that are in analyzer memory Use DELETE FILE to selectively delete stored programs or variables from analyzer memory DL DELT ON OFF DO FRQ RESP TST K
99. esses the softkey menu used to set and display the MO real time clock Key Access TIMEDATE QN OFF turns the display of the real time clock on or off Pressing EE DEFAULT CONFIG sets TIMEDATE ON OFF to ON Key Access CONFIG mn N A ER aaa Quick Reference 4 125 Softkey Descriptions Cahle TV Analyzer Functions TRACE B 4 126 finds the third order intercept of the two highest amplitude signals and the two associated distortion products Key Access MEAS USER accesses the trace softkeys that allow you to store and manipulate trace information Each trace is comprised of a series of data points that form a register where amplitude information is stored The analyzer updates the information for any active trace with each sweep If two traces are being written to they are updated on alternating sweeps selects the softkey menu used for trace A trace B or trace C functions Press TRACE A B C until the letter of the desired trace is underlined Key Access TRACE sets up trace A for recalling previously saved trace data into trace or saving trace data from trace A Key Access RECALL or SAVE sets up trace B for recalling previously saved trace data into trace B or saving trace data from trace B Key Access RECALL or sets up trace C for recalling previously saved trace data into trace C or saving trace data from trace C Key Access RECALL or Qui
100. est displayed signal and its two sidebands The sidebands are assumed to be entirely from amplitude modulation If there are differences in the sideband amplitude the larger value is used The measurement runs continuously re executing at the end of each sweep Key Access MEAS USER turns off the analyzer phase locking The counter is turned off so frequency correction is no longer done at the start of each sweep Turning the phase locking off increases measurement speed but it decreases frequency accuracy This is a service diagnostic function and is for service use Key Access displays the output of the 10 V reference from the A7 analog interface assembly as a horizontal line at the top graticule This is a service diagnostic function and is for service use only Key Access displays the output of the 10 V reference from the A7 analog interface assembly as a horizontal line at the bottom graticule This is a service diagnostic function and is for service use only Key Access displays the output of the 2 V reference produced on the A16 processor video assembly as a horizontal line at the top graticule This is a service diagnostic function and is for service use only Key Access Quick Referente 9 kHz EHI Bi 120 kHz EMI BW 200 Hz EMI BW A B A B A ON OFF Softkey Descriptions Cable TV Analyzer Functions allows a 6 dB resolution bandwidth of 9 kHz This bandwidth is usef
101. evs 3 4 START FREQ 4 121 STOP FREQ 4 121 softkeys function LISTEN OFF 4 65 LISTEN ON 4 65 sottkeys test and function CHANNEL SELECT 4 25 MIN HOLD ON OFF 4 73 RECALL FRM INT 4 99 SAVE INT 4 99 4 103 sound on off 4 111 source power 4 118 space character 4 137 span 0 Hz 4 137 LAST SPAN 4 64 window zone 4 138 SPAN 3 4 3 17 4 111 span user defined channel 4 131 SPAN ZOOM 4 112 SPEAKER ON OFF 4 112 spectral density channel power 4 25 SPECTRUM ANALYZER 4 112 speed Gata transmission 4 16 split screen 4 136 SQUELCH 4 112 SRC ATN MAN AUTO 4 113 SRC PWR OFFSET 4 113 SRC PWR ON OFF 4 113 SRC PWR STP SIZE 4 113 standard timebase 4 19 standard tune configuration Index 25 selecting 4 114 start and stop frequencies 4 68 START FREQ 4 113 START TIME 4 114 state of analyzer at power on 4 88 state registers locking 4 101 STATE CARD 4 116 STATE INTRNL 4 116 STD 4 114 step keys 3 4 3 9 step size center frequency 4 24 step size coupling 4 15 stimulus response mode 4 118 STOP FREQ 4 116 stop frequency fft 4 55 stopping a measurement 4 8 STOP TIME 4 115 store correction factors 4 19 store data to RAM card 4 103 STORE TO CARD 4 103 storing display 4 40 storing test results printing 4 42 storing the correction factors CAL STORE 2 15 storing the test results on a RAM card 4 42 STOR PWR ON UNITS 4 3 4 116 STP GAIN ZERO 4 5 4 117
102. ey Access displays the change in percent between a reference display line and the display line activated by pressing DL DELTA ON OFF The percentage is displayed in the active function block Key Access DISPLAY compares a spectrum stored at a reference point to spectrum at any other point in the system where you want to evaluate the frequency response The signal level and amplitude slope should be approximately the same as the reference trace Quick Reference 4 41 Softkey Descriptions Cahle TV Analyzer Functions DONE DROOP DSP LINE DUMP Td PRINTER DUMP TU RAM CARD 4 42 allows you to indicate that you have finished making your selection The DONE softkey should not be confused with the DONE programming command disables the reset of the peak detector on the A16 processor video assembly after each analog to digital conversion This is a service diagnostic function and is for service use only Key Access activates an adjustable horizontal line that is used as a visual reference line Key Access DISPLAY MKR FCTN or PEAK SEARCH allows you to have t the test results sent to a printer when using Measure W Or Timed Measure The printer needs to be connected to the analyzer Key Access SYSTEM MEAS allows you to store the test results on a RAM card when using Measure Now or Timed Measure The RAM card must be formatted and ready for use to store the test data Up to 4
103. f the modulation of the video format NTSC uses the negative or positive modulation video format NTSC PAL and PAL M use negative modulation SECAM L uses positive modulation Key Access TRIG Quick Reference 4 129 Softkey Descriptions Cable TV Analyzer Functions TV TRIG EVEN FLD TV TRIG ODD FLD TW Thio VERT INT UPDATE TIBEEREQ User Menus 4 150 selects an even video field of an interlaced video format to trigger on Key Access TRIG selects an odd video field of an interlaced video format to trigger on Key Access selects a vertical interval to trigger on Triggering occurs on the next pulse edge If it triggers on an even field triggering will not alternate between odd and even fields If it triggers on an odd field triggering will alternate between odd and even fields The vertical interval is used for non interlaced video formats Key Access TRIG Option 107 only switches between the time domain and frequency domain windows in the gate utility The window is updated to reflect the current state when it is activated The WINDOWS key will also switch between the windows Key Access SWEEP accesses a menu available for your use for user defined programs and key functions Key Access MEAS USER Quick Reference USR CH O CNTR FRQ USR CH O SPAN Softkey Deseriptions Cable TV Analyzer Functions allows you to define the center frequency for a user
104. gt C bora B UD RATE 4 16 accesses the softkey menu used for control of the auxiliary interface connector AUX CTRL accesses demodulation functions For Option O11 it accesses tracking generator functions displays the voltage level present at an unused input to the Test Point MUX circuitry located on the A7 analog interface assembly This is a service diagnostic function and is for service use only Key Access copies trace B into trace C Key Access exchanges the contents of trace B with trace C and puts trace B in view mode Key Access subtracts the display line from trace B and places the result in trace B T he B DL B function is a math operation See the A Bi ES ON OFF softkey description for information about math operations Key Access sets the data transmission speed Also see the description for the COPY coPv key The baud rate is set to 1200 by pressing DEFAULT CONFIG Key Access Quick Reference BINARY SPAN BLANK A BLANK B BLANK C BLANK CARD Saftkey Descriptions Cahle TV Analyzer Functions displays the output of the span DAC that is located on the AT analog interface assembly This is a service diagnostic function and is for service use only Key Access stores the amplitude data for trace A and removes it from the screen The trace A register will not be updated as the analvzer sweeps Key Access TRACE stores the amplitude d
105. he Cross Modulation measurement Key Access CHANNEL MEAS changes the horizontal position of the signal on the analyzer display Press CAL STORE if you want the analyzer to use this position permanently so that it is not lost when the power is turned off Key Access Quick Reforance CRT VERT POSITION CS0 CTB DACS DATA TO PRINTER DATEMODE MDY DMY Softkey Descriptions Cable TV Analyzer Functions changes the vertical position of the signal on the analyzer display Press CAL STORE if you want the analyzer to use this position permanently so that it is not lost when the power is turned off Key Access initiates the Composite Second Order Composite Triple Beat measurement Key Access CHANNEL MEAS changes the DAC numbers of the span DAC YTO coarse tune DAC YTO fine tune and YTO FM tune DAC located on the A7 analog interface assembly This is a service diagnostic function and is for service use only Key Access allows you to retrieve the test data from a RAM card file and send it to a printer to be printed The printer needs to be connected to the analyzer changes the display of the date from a month day year format to a day month year format It is set toa _ month day year format by pressing DEFAULT CONFIG Key Access CONFIG Quick Reference 4 35 Softkey Descriptions Cahle TV Analyzer Functions den dBnV dBuV DEFAULT CAL DATA DEFAULT CONFIG 4 36 cha
106. he analyzer resolution bandwidth to the values required for electromagnetic interference EMI testing 200 dz EMI BW is only available with Option 130 Key Access Pressing Hz pV ps which is also the ENTER key terminates and enters into the analyzer a numerical value that has been entered from the front panel using the keypad knob or step up down keys allows you to enter channels individually or to edit the test plan A maximum of 158 channels channel numbers 0 2 through 158 can be entered into a test plan Key Access SYSTEM MEAS allows you to enter channels as T range of channel numbers Unlike ENTER BY CHANNEL you cannot use ENTER BY RANGE to edit or delete a channel A maximum of 158 channels channel nur bers 0 2 through 158 can be entered into a test plan Key Access SYSTEM MEAS Quick Reference Softkey Descriptions Cahle TV Analyzer Functions ENTER LOCATION allows you to enter a location code You do not have to enter E a location code it is only for your convenience to help you keep track of where the test data originated The location code can be up to seven digits long Key Access SYSTEM MEA ENTER TEMP allows you to enter the temperature You can enter a number from 999 to 999 The temperature is entered without Celsius or Fahrenheit units The analyzer does not measure the temperature You must provide the temperature reading You do not have to enter a tempe
107. he knob and step key increments are not optimal for positioning the signal To use the knob or step keys to position the signal select sweep time as the active function Key Access MEAS USER FINE TUNE DAC displays the output of the YTO fine tune DAC which is TE produced on the AT analog interface assembly This is a service diagnostic function and is for service use only Key Access FLAT Mun draws a zero slope line between the coordinate point of the current segment and the coordinate point of the next segment producing limit line values equal in amplitude for all frequencies between the two points If the amplitude values of the two segments differ the limit line steps to the frequency value of the second segment Key Access DISPLAY Flatness Data provides access to the softkeys used for viewing or editing the flatness correction constants This is a service calibration function and is for service use only Key Access Quick Reference 4 55 Softkey Descriptions Cable TV Analyzer Functions FM COIL DRIVE FM DEV GAIN OFFSET FM SPAN CARD 4 56 displays the output of the FM coil driver produced on the AT analog interface assembly This is a service diagnostic function and is for service use only Key Access initiates the FM Deviation measurement Key Access CHANNEL MEAS adjusts the FM deviation display The center graticule represents zero deviation The top grati
108. he tracking generator output RF OUT 75 Q to the cable TV analyzer INPUT 75 Q connector using an appropriate cable NOTE A low loss cable should be used for accurate calibration Use the 75 Q cable shipped with the cable TY analyzer 2 16 Getting Started Preparing for Use Preparing Your Cable TV Analyzer for Use 2 Press the following cable TV analyzer keys CAL More 1 of 4 More 2 of 4 then CAL TRK GEN TG SIGNAL NOT FOUND will be displayed if the tracking generator output is not connected to the cable TV analyzer input 3 To store this data in the area of cable TV analyzer memory that is stored when the cable TV analyzer is turned off press CAL STORE When the self calibration routines have been completed successfully the cable TV analyzer is ready for normal operation Getting Started 2 17 Preparing for Use Preparing Your Cable TV Analyzer for Use meeen nonen eannan aaan aaa Quick Tour What You ll Learn in This Chapter Quick Tour This chapter introduces the basic functions and features of the HP 8591C Cable TV Analyzer In this chapter you will Get acquainted with the front panel and rear panel features Get acquainted with the menus and softkeys Learn about screen annotation Learn about the cable TV measurements and system monitor personality Make a basic measurement using the calibration signal Learn how to improve measurement accuracy by using self calibra
109. imed measurement The time is specified in 24 hour hour minute format the date is specified in year month and day format If you enter a stop time that is 24 hours or greater the stop time will be set to 23 hours and 59 minutes Pressing CABLE TV ANALYZER SYSTEM MEAS Timed Measure accesses STOP TIME Key Access SYSTEM MEAS Quick Reference 4 115 Softkey Descriptions Cable TV Analyzer Functions STATE CARD STATE gt INTRNL STOP FREQ STOR PWR QN UNITS saves the current analyzer state on the memory card Key Access SAVE saves the current analyzer state in the selected state register Key Access sets the frequency at the right side of the graticule Key Access FREQUENCY sets the default settings for the units used in the linear and the logarithmic modes when the instrument is powered on The settings for the units can be changed during normal instrument operation but they will return to the default settings when the instrument is powered on again This is a service calibration function Refer to the service guide for more information Key Access Quick Reference STP GAIN ZERO STUVWX SWEEP CONT SGL SWEEP DELAY Softkey Descriptions Cable TV Analyzer Functions disables the two 20 dB step gain amplifiers on the A12 amplitude control assembly This is a service diagnostic function and is for service use only Key Access accesses the soft
110. ise This function does not affect the sweep time bandwidth or other analog characteristics of the analyzer Key Access BW TRACE or MEAS USER n a a o aaa a a UB Quick Reference VID BW AUTO MAN NOTE Softkey Descriptions Cable TV Analyzer Functions changes the analyzer post detection filter from 30 Hz to 3 MHz in a 1 3 10 sequence For Option 130 oniy Option 130 provides additional narrow resolution bandwidths of 30 Hz 100 Hz and 300 Hz Coupling the video bandwidth function also couples the video bandwidth to resolution bandwidth ratio function If you want to auto couple the video bandwidth to a nonstandard ratio you must set the video bandwidth to auto couple before setting the video bandwidth resolution bandwidth ratio VIDEO Key Access AUTO COUPLE or BW activates the trigger condition that allows the next sweep to start if the detected RF envelope voltage rises to a level set by the display line Key Access holds and displays the amplitude data that is in the trace A register The trace A register is not updated as the analvzer sweeps If trace A is deactivated by pressing STORE BLANK A the stored data can be retrieved by pressing VIEW A Key Access Quick Reference 4 133 Softkey Descriptions Cable TV Analyzer Functions holds and displays the amplitude data that is m the trace B register The trace B register is not updated as the ana
111. isplay line See table below The display line is activated if it was not currently being displayed Peaks Listed NRM all peaks listed gt BL lt DL Key Access PEAK SEARCH peaks above display line listed peaks below display line listed switches the peak table sorting routine between listing the peaks in order by descending amplitude or by ascending frequency Key Access PEAK SEARCH displays a list of up to ten signal peaks that is updated at the end of each sweep The peaks can be sorted in order by descending amplitude or by ascending frequency Peaks above or below the display line can be excluded from the table The peak table function works with trace A only The peak table is not saved with the SAVE and keys Key Access PEAK SEARCH Quick Reference 4 83 Softkey Descriptions Cahle TV Analyzer Functions allows you to select test plan 1 as the test plan number for either saving the current test plan or recalling a previously saved test plan Saving the current test plan overwrites any test plan previously saved in plan 1 When you save the current test plan in test pt 1 it is stored in trace register 6 PLAN 2 allows you to select test plan 2 as the test plan number for either saving the current test plan or recalling a previously saved test plan allows you to select test plan 3 as the test plan number for either saving the current test plan or recalling a previou
112. ize to match the value of the active marker Press FREQUENCY then CF STEP AUTO MAN to view the step size If marker delta is active the step size will be set to the frequency difference between the markers Key Access MKR Quick Reference 4 69 Softkey Descriptions Cahle TV Analyzer Functions changes the FFT stop frequency to whatever the current value of the FF T marker frequency is within the limitations of the available sweep times This puts the marker on the right side of the graticule Key Access MARKER MID SCRN changes the frequency at the middle of the FFT display to um whatever the current value of the FFT marker frequency is within the limitations of the available sweep times This puts the marker in the middle of the graticule When using the FFT function the MARKER MID SCRI softkey replaces the MARKER CF softkey in the and menus Key Access MERS USER MKR or MARKER MINIMUM moves the active marker to the minimum detected amplitude value Key Access MARKER lAXPK PK finds and displays the frequency and amplitude differences l between the highest and lowest trace points Pressing MARKER PK PK performs the routine similar to pressing the following keys PEAK SEARCH MARKER A and MARKER MINIMUM Key Access 4 7 Q Quick Reference MARKER REF LVL MARKER START MARKER STOP MARKER ALL OFF MARKER AMPTD MARKER Softkey Descriptions
113. key Descriptions Cable TV Analyzer Functions RECALL Recall TstPlan REF LVL REF LVL OFFSET RES BW AUTO MAN 4 100 recalis limit line tables from the current mass storage device analyzer memory or memory card Key Access allows you to access the softkeys used to recall a previously saved test plan from analyzer memory or from a RAM card Recalling a test plan overwrites the current test plan If you do not want the current test plan to be overwritten save the current test plan before recalling a new one Press CABLE TV ANALYZER SYSTEM MEAS to access Recall TstPlan Key Access SYSTEM MEAS allows the reference level to be changed Key Access AMPLITUDE adds an offset value to the displayed reference level Key Access AMPLITUDE changes the analyzer 3 dB resolution bandwidth Key Access AUTO COUPLE or Quick Reference RPG TITLE SAV LOCK ON OFF NOTE Softkey Descriptions Cahle TV Analyzer Functions provides additional characters for the Change Title function Key Access or DISPLAY locks all the current internal state and trace registers against further data storage when ON is underlined When SAV LOCK ON OFF is set to ON none of the state registers 1 8 can be overwritten The analyzer automaticai ily updates state register nine with the last state ERASE ME M ignores the state of the SAV LOCK So even if STATES and TRACES are locked they vil still be
114. key menu used for selecting screen title or prefix characters S through X Key Access CAL CONFIG DISPLAY RECALL or accesses the sweep time menu and accesses the sweep time softkey functions SWP TIME AUTO MAN and SWEEP CONT SGL switches the analyzer between the continuous sweep mode Key Access SWEEP or Option 107 oniy delays the start of sweep with respect to the gate trigger edge in the time domain window of the gate utility The time segment being displayed can be shifted up to 65 msec after the gate trigger edge in 1 psec increments Key Access Quick Reference 4 117 Saftkey Descriptions Cable TV Analyzer Functions SWEEP RAMP SHEEP TIME DAC SWP CPLG SR SA C sub TIME AUTO MAN TV TRIG displays the RAMP signal from the sweep ramp generator that is located on the A7 analog interface assembly This is service diagnostic function and is for service use only Key Access displays the output of the sweep time DAC SWP DAC from the sweep ramp generator that is on the A7 analog interface assembly This is a service diagnostic function and is for service use only Key Access Option O11 only selects stimulus response SR or spectrum analyzer SA auto coupled Sweep time Key Access selects the length of time in which the analyzer sweeps the displayed frequency span Key Access AUTO COUPLE or SWEEP provides sweep triggering on the selected line of a video
115. l To calibrate the tracking generator connect the tracking generator output RF OUT 75 Q to the cable TV analyzer INPUT 75 0 connector using an appropriate cable and adapters 3 24 Getting Started Quick Tour Improving Accuracy with Seif Calihration Routines i NOTE A low loss cable should be used for accurate calibration Use the 75 Q cable shipped with the cable TY analyzer 2 Press the following cable TV analyzer keys CAL More 1 of 4 More 2 of 4 and CAL TRK GEN TG SIGNAL NOT FOUND will be displayed if the tracking generator output is not connected to the cable TV analyzer input 3 To save this calibration data in the area of cable TV analyzer memory that is saved when the cable TV analyzer is turned off press then CAL STORE Quick Tour Improving Accuracy with Self Calibration Routines When Is Self Calibration Needed While it is difficult to provide general advice for your specific measurement needs the following suggestions may help you decide when to use the self calibration features h Perform the frequency and amplitude self calibration routines whenever the instrument experiences significant environmental changes such as temperature 5 C humidity shock or vibration such as may occur during shipping or transport This is especially important if the frequency and amplitude self calibration routines were performed last in a different environment If the environment is relativ
116. l input power and displays the result at the bottom of the screen Press CABLE TV ANALYZER Setup to access Analyzer Input Key Access CABLE TV ANALYZER Quick Reference 0 4 18 Softkey Descriptions Cable TV Analyzer Functions ON OFF turns the screen annotation on or off However softkey E ME annotation will remain on the screen The screen annotation may not be required for prints or plots or during remote operation Refer to the HOLD softkey description regarding softkey annotation Key Access DISPLAY APND o CAT ITEM starts the DLP editor function and allows the highlighted RE item from the catalog of analyzer memory to be appended to the end of the item that is currently in the analyzer DLP editor memory If the item to be appended will not fit in the available memory space it will not be appended Key Access Or SAVE ATTEN AUTO MAN sets the input attenuation in 10 dB increments The I analyzer input attenuator which is normally coupled linked to the reference level control reduces the power level of the analyzer input signal at the input mixer The attenuator is recoupled when AUTO is underlined To prevent damage to the input mixer the power level at the input mixer must not exceed 72 dBmV To prevent signal compression power at the input to the input mixer must be kept below 39 dBmV CAUTION NOTE To protect the mixer from possible damage 0 dB RF attenuation no inp
117. le TV Analyzer f Component Lewel Repair Service Guide Contact your nearest sales and service center for current part number a a a a PA ISIN a HEP PT T a a a a a Mas IY HIA SM OIIIM O a E Getting Started 2 5 Preparing for Use Preparing Your Cahle TV Analyzer for Use Step 2 Set the line voltage selector switch The cable TV analyzer is a portable instrument and requires no physical installation other than connection to a power source Do not connect AC power until you have verified that the line voltage is CAUTION MO e ENS Wr MP l correct the proper fuse is installed and the line voltage selector switch is properly positioned as described in the following paragraphs Damage to the equipment could result Table 2 2 Power Requirements 115 V Requirement Input Voltage 90 to 132 V rms Frequency 47 to 440 Hz 9500 VA 180 W 230 V Requirement 188 to 264 V rms 47 to 68 Hz 500 VA 180 W Power 2 6 Getting Started Preparing for Use Preparing Your Cahle TV Analyzer for Use Figure 2 1 Setting the Line Voltage Selector Switch Before connecting the cable TV analyzer to the power source you must set CAUTION d imd ron De eh ee tas the rear panel voltage selector switch correctly to adapt the cable TV analyzer to the power source n improper selector switch setting can damage the cable TV analyzer when it is turned on Set the instrument s rear panel voltage selec
118. learing the active function 4 60 clearing the test plan 4 27 CLEAR PARAM 4 27 CLEAR TESTS 4 27 CLEAR TST PLAN 4 27 CLEAR WRITE A 4 27 CLEAR WRITE B 4 27 CLEAR WRITE C 4 28 CNTL A 0 1 4 28 CNTL B 0 1 4 28 CNTL C 0 1 4 28 CNTL D 0 1 4 28 CNT RES AUTO MAN 4 28 COARSE TUNE DAC 4 4 4 29 commands dispose all 4 48 4 49 4 50 front panel execution 4 51 common preset conditions 4 90 confidence test 4 29 CONFIG 4 29 configuration plotter 4 85 4 86 Nu i QA AAAA NANA eee RRL eee errr tl mm Index 6 printer 4 94 4 95 CONF TEST 4 29 connector 10 MHz ref output 3 7 AUXB 4 16 aux IF output 3 7 aux video output 3 7 cal output 3 4 earphone 3 7 external keyboard 3 7 ext ref in 3 7 ext trig input 3 7 gate output 3 7 gate trigger input 3 7 hi sweep in out 3 7 HP IB interface 3 7 monitor output 3 7 sweep output 3 7 TV trig output 3 7 connector auxiliary interface 4 16 continuous sweep 4 117 CONTINUS FFT 4 29 CONT MEAS 4 29 control functions 9 4 control line A auxiliary interface 4 28 control Hine B auxiliary interface 4 28 control line C auxiliary interface 4 28 control line D auxiliary interface 4 28 controlling the gate GATE CTL EDGE LVL 4 58 VATE ON OFF 4 58 COPY 3 4 4 30 COPY DEV PRNT PLT 4 33 correction factors 3 21 4 33 data display 4 40 default 4 36 self calibration 4 19 storing 4 19 CORRECT ON
119. lotter must have already been selected using CONFIG CONFIG and either Plot Config for a plotter or Print Config for a printer To obtain a print press CONFIG COPY DEV PRNT PLT so that PRNT is underlined then Print Config Pron Port Config Use BAUD RATE to change the baud rate of the analyzer if necessary Press CONFIG Print Config Prn Port Config PRN PORT SER PAR so that SER is underlined then press BAUD RATE For Option 041 use PRINTER ADDRESS to change the HP IB address of the printer if necessary Press CONFIG Print Config Prn Port Config PRN PORT HPIB PAR so that HPIB is underlined then press PRINTER ADDRESS If the analyzer is connected to an HP PaintJet printer and you want a color printout press PAINTJET PRINTER If the analyzer is connected to an HP Paintlet print er and you want a black and white printout press HP BEW PRINTER More printer information can be found in the HP 8590 E Series and L Series Spectrum Analyzers and HP 8591C Cable TV Analyzer Programmer s Guide If you want the softkey labels to be printed with the analyzer display printout when using COPY press PRT MENU oN OFF so that ON is underlined Press and the process will begin The screen remains frozen no further sweeps taken until the data transfer to the printer is complete The analyzer works with many Hewlett Packard and Epson compatible printers Quick Reference
120. lude ierminc DW AUTO MAN V BW AUTO MAM VEWARBW RAT EG VID AVG ON GFF tui BW Menu Frevicusg Manu Reyuires Option 39 5 4 Quick Reference CAL 2 CAL FREG amp AMPTD 3 CAL AMP TS CAL STORE Mera of Cat STP GAIN ZERO ANALYZER GAINS AXE More 1 Option O1 onty For service use on FM COH DRIVE fox a See Amp Cor 4 PURGE AMF COR Quick Reference Key Menus Cable TV Analyzer Functions ELIT FLATNE FINUM B INIT FLT EXIT BROOS More FM OFFS More 5 7 t A Key Menus Cable TV Analyzer Functions OPTION 041 PEN PORT HPi PORE H FRi NTER ADD 3 PLOTTER ADDRESS CONF 1 G i Previus Menu LOCAL 3 12 20 PRN PORT SER PAR COPY BEV PRMT PLT ES PER PLT PO Plot Config mn Md kd 3 Print Conti EFA Pork Conf ige Ties Dac s i PLT MENU ON OFF Chongs Pre Frevious Menu More i of Set Set 4f Ern f M SML LRG PRT N OFF i hit LOS70 SML LRG revious Menu PAINTJET PRINTER MDY GMY OESKJET 316 5500 i DESKJET 546 Previous Mehu SHEJKU MNOPOR STUVWX CATALOG CARD FORMAT CARD BLANK CARD Mor z of 3 i Previous Menu ERASE ERASE i Changes to ANALYZER ADDRESS ERASE MEM AEk for Optiion Chenges ic SHOW when P pressed to MEM LOCKED whan is ON Appeors only when P or 4 is selected SYNC NI DEFAULT SYNC PG 3 SYNC NRM PAL Mere 3 OF 3 5 6 Quick Reference OM OFF 34 j ie Li
121. lues When limit lines are specified with time rather than frequency the REL setting only affects the amplitude values The current amplitude values will be relative to the displayed reference level amplitude but the time values will always start at the left edge of the graticule Key Access DISPLAY Quick Reference LIMITS FRQ TIME LINE LISTEN ON OFF LMT DISP Y N AUTO Softkey Descriptions Cable TV Analyzer Functions selects whether limit lines will be entered using frequency or sweep time to define the segments Limit lines can be created by the user to test trace data They can be specified as a table of limit line segments of amplitude versus frequency or of amplitude versus time Key Access activates the trigger condition that allows the next sweep to be synchronized with the next cycle of the line voltage Key Access TRIG Option 102 only demodulates the aural carrier so that it is audible through the built in speaker Key Access CHANNEL MEAS displays any portion of the limit lines that are currently within the analyzer display boundary Hf Y yes is underlined the limit lines are displayed If N no is underlined they are not displayed If AUTO is underlined the display of the limit lines is dependent on LMT TEST The limit lines will be displayed while the limit test function is turned on otherwise they will be turned off Limit lines cannot be displayed while using the an
122. lyzer sweeps If trace B is deactivated by pressing STORE BLANK B the stored data can be retrieved by Key Access TRACE VIEW C eL hoids and displays the amplitude data that is in the trace C register The trace C register is not updated as the analyzer sweeps If trace C is deactivated by pressing STORE BLANK C the stored data can be retrieved by Key Access VIEW CH SEL MON allows you to view the selected channels of the current test plan VIEW un allows the user to measure the relative power of any CO CHNL co channel signal that is present Key Access CHANNEL MEAS VIEW INGRESS 0000 VIEW ING initiates the View Ingress measurement 4 134 Quick Reference VIEW LAST Volts Watts WINDOWS OFF Softkey Descriptions Cable TV Analyzer Functions allows you to view the last test results on the analyzer screen Upon being sent to the screen the following options are available e NEXT PAGE displays the next page of test results gt PREV PAGE displays the previous page of test results GOTO PAGE displays selected page number PRINT REPORT prints a test results report STORE TO CARD stores test results to a RAM card Press CABLE TV ANALYZER SYSTEM MEAS More 1 of 2 to access VIEW LAST Key Access SYSTEM MEAS changes the amplitude units to volts Key Access AMPLITUDE changes the amplitude units to watts Key Access AMPLITUDE turns off the windows display mode
123. ment with the ADJ CHAN POWER or ADJ CHAN PWR extd softkeys Key ccess ADJ CHAN POWER measures the power leakage into the adjacent channels and TS calculates the adjacent channel power ratio of both the upper and lower channels with respect to the total power The total power of the carrier is displayed The adjacent channel power ratios of both channels are also displayed and the larger number is marked with a A Vertical lines on the display indicate the bandwidth edges of the three different channels being measured Key Access MEAS USER 4 8 Quick Reference ADJ CHAN PWR extd AIR ALC MTR INT XTAL Softkey Descriptions Cable TV Analyzer Functions measures the power leakage into the adjacent channels and calculates the adjacent channel power ratio of both the upper and lower channels with respect to the reference channel ADJ CHAN POWER extd has an extended dynamic range compared with ADJ CHAN POWER The extended range is measured by taking two different sweeps with different reference levels and combining the trace data The displayed dynamic range is 104 dB and the log scale is set to 13 dB division Key Access MEAS USER allows you to select the AIR tune configuration The AIR is also called off the air or over the air tune configuration It refers to signals that are broadcast over the air and received with an antenna The AIR frequency assignments are defined in the Federal Communications Commissi
124. mit Lines ANALOG More 3 34 After seiecting Gigit G throegn ampiituce tern ABODE MNOPCR STUVWYE Z_ Spe Cieor Mere t of 2 Pe RECALL LIMIT EE Titie PSP Y W AUTO d ip Law QN OFF i Edit Mid De Previcus Menu QTATN QN THRESHLO CN Change Prefix his Sollkey pressis any brings up tne appropriocte ior rm FREQUENCY Quick Reference Key Menus Cable TV Analyzer Functions x FLAT POINT eft 2 Key Menus Cahle TV Analyzer Functions LE MEAS co MEAS CENTER FREQ ODC BWR POWER Setun Previous Menu E r Menus us User Menu M 4B PTS ON GFF X AM ON OFF eae ON ree OCCUPIED GANDWDTH ef ADS CHAM POWER m FFT Mani ADJ CHAN PWR exia c POWER 3 ACPORAPH ON OFF Setup 25 Previous Meng CHANNEL SPACING CHANNEL BANDWOTH PARAM AUTO MAN Vid AVS ON OF Occ Bw xm P Previous Men FFT MARKERS MARKER FFT STOP MA gt MIO SCRN ESIGNAL D 33 Chonges io ORPH MKR ON OFF was when GRAPH ON More 2 of 2 KE ON OFF MAUS EOM keit K ALTO ABC TAP OFF More 2 of 2 r selecting this sofikey ing cay digit 8 ihrough gs op the appropriate a de denmi m nu 5 8 Quick Reference pul6de Key Menus Cahle TV Analyzer Functions MARKER 0F or MARKER MID ECRN MARKER gt START MARKER STOP MARKER Peak Me More Z oi key when the is selected
125. mpatible with an Epson LQ 570 M EIS compatible printer Key Access un a ttt rere A aa 4 50 Quick Reference EP MX80 SML LRG EXECUTE TITLE EXIT Exit Catalog EXIT SHOW EXIT UTILITY Softkey Descriptions Cable TV Analyzer Functions sets the analyzer to be compatible with an Epson MX80 compatible printer Key Access CONFIG executes a programming command displayed in the screen title area of the analyzer Key Access exits the EDIT FLATNESS softkey menu This is a service calibration function and is designed for service use oniy Key Access returns the analyzer to the state it was in before the current catalog function was invoked It clears the catalog display and returns to a normal analyzer display Key Access RECALL or removes the screen annotation left after pressing SHOW OPTIONS Key Access exits the gate utility returning to the gate control menu The analyzer is returned to normal operation The state of the analyzer becomes the state of the window that was active when exiting the gate utility Key Access SWEEP Quick Reference 4 5 Softkey Descriptions Cahle TV Analyzer Functions EXT AMP GAINS NZ TIG YES NO allows you to select the gain value of an external preamplifier for the carrier to noise test The default value is 20 dB for the HP 85905A preamplifier The preamplifier selection is stored in no
126. n Inspect the shipping container for damage If the shipping container or cushioning material is damaged keep it until you have verified that the contents are complete and you have tested the cable TV analyzer mechanically and electrically Table 2 1 contains the accessories shipped with the cable TV analyzer If the contents are incomplete or if the cable TV analyzer does not pass the verification tests in the calibration guide notify the nearest Hewlett Packard office If the shipping container is damaged or the cushioning material shows signs of stress also notify the carrier Keep the shipping materials for the carrier s inspection The HP office will arrange for repair or replacement without waiting for a claim settlement If the shipping materials are in good condition retain them for possible future use You may wish to ship the cable TV analyzer to another location or to return it to Hewlett Packard for service See Returning the Cable TV Analyzer for Service in Chapter 9 of the HP 591C Cable TV Analyser Spectrum Analyzer Reference User s Guide for more information about shipping materials NOTE Complete instructions for installing your cable TV analyzer in an equipment rack are provided in a service note that is included with Options 908 and 908 Rack Mounting Kits 2 4 Getting Started Preparing for Use Preparing Your Cahle TV Analyzer for Use Tahle 2 1 Accessories Supplied with the Cable TV Analyzer De
127. n the current time the current time is used If you specify a date earlier than the current date the current date is used If the date or time setting of the analyzer is incorrect see If the wrong date or time is displayed in Chapter 4 of the HP 8591C Cable TV Analyzer Cable TV Measurements User s Guide Pressing CABLE TV ANALYZER SYSTEM MEAS Timed Measure accesses START TIME allows you to select the standard STD channel tuning configuration The standard configuration means that the channels are at the frequencies that the FCC defines to be the standard channel frequencies The standard frequency assignments are defined in the FCC channel identification plan part 76 612 If you do not select a channel configuration the default configuration is the standard STD configuration The choices for the channel tuning configuration are standard STD off the air AIR incrementally related carriers IRC harmonically related carriers HRC and T format The channel tuning configuration selection is selected independently of the test plan and is not stored with the test plan The analyzer retains the channel tuning configuration Selection even when power is turned off until a new selection is made Press CABLE TV ANALYZER Setup Channel Tuning to access STD Quick Reference Softkey Descriptions Cable TV Analyzer Functions STOP TIME allows you to specify the time and the date to end the AMO testing for a t
128. nal keyboard entry Refer to External Keyboard in the HP 65970 Cable TV Analyzer Spectrum Analyzer Reference User s Guide marker readout MKR MER gt PEAK SEARCH 8 measurement uncalibrated or function in progress AUTO COUPLE messages 10 service reguest SeeAgenikA See LOCAL in the HP 85970 Cable TV Analger Spectrum Analyzer Reference User s Guide 12 frequency span or stop frequency SPAN STOP FREQ SWP TIME AUTO MAN FREQ OFFSET YID BW AUTO MAN RES BY AUTO MAN 7 center frequency or start frequency CENTER FREQ START FREQ THRESHLD ON OFF threshold 18 correction factors on Ea E AIIM RIAHF RAMANA MAMAS AA are MARA 3 12 Getting Started Quick Tour Screen Annotation Table 3 1 Sereen Annotation continued Description Function Key See Using Amplitude Correction Factors in the AP 85970 Cable TV Analyzer Spectrum Analyzer Reference User s Guide amplitude correction factors on tigger trace mode video average VID AVG ON OFF display line DSP LINE ON OFF amplitude offset REF LVL OFFSET mmes SEHE UR LI 26 active function block Refer to the description of the softkey function that was activated Table 3 2 Screen Annotation for Trace Trigger and Sweep Modes Trigger Mode Sweep Mode W clear write traces A B C F free run C continuous V M maximum hold
129. ncy or start frequency function and accesses the menu that has the frequency functions The center frequency or start frequency value appears below the graticule on the screen Although the analyzer allows entry of frequencies greater than the specified frequency range using frequencies greater than the frequency span of the analyzer is not recommended Quick Reference 4 57 Softkey Descriptions Cable TV Analyzer Functions Control GATE CTL EDGE LVL GATE DELAY GATE LENGTH GATE ON OFF Option 107 only accesses the menu of gate control functions and the entrance to the gate utility menus The gate can be controlled independently or from within the gate utility The gate utility makes it easier to set up and manipulate the gate Key Access Option 107 only l determines if the gate is enabled on the edge of the trigger input or on a threshold level of the input signal H the gate control is set to EDGE the edge of the input signal triggers the timer for the gate delay When the gate control is set to LVL the gate follows the positive level of the signal connected to GATE TRIGGER INPUT Key Access SWEEP Option 107 only sets the duration of the delay after an edge trigger before the gate switch closes The gate delay can be set from 1 ps to 65 535 ms in 1 gs steps Key Access SWEEP Option 107 only sets the duration of the gate The gate length can be set from 1 us to 65 535 ms in 1 ps steps
130. nd HP 8591C Cable TV Analyzer Component Level Repair Service Guide e Provides information for component level repair of the analyzer How to Order Guides Zach of the guides listed above can be ordered individually To order contact your local HP Sales and Service Office 1 4 Getting Started Before You Begin Become familiar with the conventions and safety information provided in this chapter before you begin using your cable TV analyzer Conventions This guide uses the following conventions A boxed uppercase name in this typeface represents a key physically located on the instrument Softkey A boxed word written in this typeface indicates a softkey a key whose label is determined by the instrument s firmware Softkey ON OFF ON A boxed word written in this typeface with an the words ON and OFF can turn a function on or off The underlined function is shown parenthetically Softkey AUTO MAN AUTO A boxed word written in this typeface with d a the words AUTO and MAN can either be auto coupled or have its value manually changed The underlined function is shown parentheticall y Screen Text Text printed in this typeface indicates text displayed on the spectrum analyzer screen Getting Started 1 5 CAUTION WARNING About This Guide Before You Begin Safety Notes The following safety notes are used throughout this manual Familiarize yourself with each of the notes and its meaning b
131. ne segment Key Access DISPLAY accesses several service calibration functions The service calibration functions are designed for service use only More detailed descriptions of the service functions are available in the service documentation Service documentation can be obtained by ordering Option 915 through your HP Sales and Service office For a listing of all available service calibration functions refer to Service Functions at the beginning of this chapter Key Access accesses several service diagnostic functions The service diagnostic functions are designed for service use only More detailed descriptions of the service diagnostic functions are available in the service documentation Service documentation can be obtained by ordering Option 915 through your HP Sales and Service office For a listing of all available service diagnostic functions refer to Service Functions at the beginning of this chapter Key Access Softkey Descriptions Cahle TV Analyzer Functions ERROR Set Baw Printer Set Coir Printer gt SET DATE SET TIME sets the calibration attenuator error factors this is not the same as the input attenuator This is a service calibration function and is for service use only Key Access accesses the softkeys for setting up black and white HP and 2pson compatible printers Key Aecess CONFIG accesses the softkey for setting up the HP paintjet printer Key Access
132. nel number with ENTER BY CHANNEL or ENTER BY RANGE or by pressing Measure Now Key Access SYSTEM MEAS accesses the softkey menu used for selecting the characters Y Z underscore _ space or for clearing the screen title Key Access CAL CONFIG DISPLAY RECALL or zeros the value of the delta marker to establish a new reference The ZERO MARKER softkey is in the pulse parameter entry menus of the gate utility Key Access SWEEP changes the frequency span to zero and turns off marker track if it is on Key Access Quick Reference 4 137 Softkey Descriptions Cabie TV Analyzer Functions ZONE CENTER ZONE PK LEFT PK RIGHT ZONE SPAN ZE allows the zone markers to be moved in frequency without changing the zone span Key Access WINDOWS ON searches for the next frequency peak outside and to the left of the zone markers on the upper window trace and then moves the zone so that it is centered around the new peak Key Access WINDOWS searches for the next frequency peak outside and to the right of the zone markers on the upper window trace and then moves the zone so that it is centered around the new peak Key Access WINDOWS allows the span of the zone markers to be changed without changing the center frequency Key Access WINDOWS switches between the split screen windows display and a full size display of the window that is currently active Once the ZOOM f
133. nel tuning configuration selection even when power is turned off until a new selection is made Press CABLE TV ANALYZER Setup Channel Tuning to access T Key Access CABLE TV ANALYZER allows you to take a reference trace measurement at any point in the system that you want to use as the reference For example typical reference spectrums can be set up at the output of the headend or AML hub Thirty two or more reference traces can be stored Quick Reference 4 121 Softkey Descriptions Cable TV Analyzer Functions Timed Measure INTERVAL allows you to access the functions that you can use to initiate the testing at a later time When you press Timed Measure you access a Pressing CABLE TV ANALYZER SYSTEM MEAS accesses Timed Measure allows you to specify the time interval between the starting of testing for a timed measurement The time is specified in 24 hour hour minute format The maximum time interval is 99 hours If you do not specity a time interval the time interval is set to zero When the time interval is set to zero testing will begin immediately after the previous tests have been completed When specifying a time interval you need to specify a time interval that is at least long enough to allow the analyzer to complete the testing before beginning testing again Here are some general guidelines for estimating how long it takes the analyzer to test one channel e It takes approximately
134. nges the amplitude units to dBm for the current setting log or linear Key Access AMPLITUDE changes the amplitude units to dBmV for the current setting log or linear Key Access AMPLIT DE changes the amplitude units to dBuV for the current setting log or linear Key Access AMPLITUDE accesses the factory default correction factors A special pass code is required for use If the message Self cal needed appears when DEFAULT CAL DATA is pressed the CAL FREQ and CAL AMPTD routines need to be run The CAL FREQ and CAL AMPTD must be run to ensure specifications The calibration results must then be saved by pressing CAL STORE See Chapter 8 for more information Key Access resets the analyzer configuration to the state it was in when it was originally shipped from the factory and performs an instrument preset See Table 4 2 for the default user configuration values set by pressing DEFAULT CONFIG n a raa anaana BB Quick Reference DEFAULT SYNC Define Coupling Softkey Descriptions Cable TV Analyzer Functions Table 4 2 Default Configuration Values ch ees E 8000 CRT position Horizontal and Vertical External preamp 9 dB Save lock linternal states or traces Bee jn Ba em format blank Key Access restores the factory default values of the horizontal and vertical synchronization constants for the rear panel MONITOR output CRT SYNC
135. nits keypad allows entry of exact values for many of the cable TV analyzer functions You may include a decimal point in the number portion If not the decimal point is placed at the end of the number Numeric entries must be terminated with a units key The units keys change the active function in a manner prescribed by that function For example the units keys for frequency span are GHz MHz kHz and Hz whereas the units for reference level are GdBm ZdBm mv and gv NOTE IF an entry from the number units keypad does not coincide with an allowed function value for example that of a 12 MHz bandwidth the cable TV analyzer defaults to the nearest allowable value The step keys allow discrete increases or decreases of the active function value The step size depends upon the cable TV analyzer measurement range or on a preset amount Each press results in a single step change For those parameters with fixed values the next value in a sequence is selected each time a step key is pressed Changes are predictable and can be set for some functions Out of range values or out of sequence values will not occur using these keys Getting Started 3 9 Quick Tour Getting Acquainted with the HP 8591 Cable TV Analyzer Fine Focus Control The fine focus control is located on the side of the cable TV analyzer Use the following procedure to adjust the fine focus control 1 Adjust the front panel intensity control f
136. nus for entering the pulse parameters reference edge pulse width and pulse repetition interval If pulse parameters have previously been entered pressing Pulse Param causes a list of the current values to be displayed Key Access Quick Reference 4 95 Softkey Descriptions Cahle TV Analyzer Functions PURGE AMP COR clears the current amplitude correction factors table bi Pressing PURGE AMP COR displays the message If you are sure press key again to purge data Pressing PURGE AMP COR a second time clears the amplitude correction data Press SAVE AMP COR to save amplit ude correction factors and then press PURGE AMP COR to clear the current amplitude correction factors table Key Access PURGE LIMITS clears the current limit line table from analyzer memory mE Pressing PURGE LIMITS displays the message If you are sure press key again to purge data Press PURGE LIMITS again if you wish to clear the current limit line table Press SAVE LIMIT to save the current limit line table and then press PURGE LIMITS to clear the current limit line table Key Access DISPLAY RR A 4 96 Quick Reference PWRGRAPH ON OFF PWR SWP ON OFF RECALL AMP CCR Softkey Descriptions Cable TV Analyzer Functions turns the channel power graph ON or OFF With the PWRGRAPH ON the channel powergraph is calculated and displayed and the numeric results are not displayed The value of the channel powe
137. nvolatile analyzer memory This means that the analyzer retains the selection even when power is turned off until a new selection is made Press CABLE TV ANALYZER Setup Analyzer Input Key Access CABLE TV ANALYZER allows you to select the noise figure value of an external preamplifier for the carrier to noise test The default value is 7 dB for the HP 85905A preamplifier The preamplifier selection is stored in nonvolatile analyzer memory This means that the analyzer retains the selection even when power is turned off until a new selection is made Press CABLE TV ANALYZER Setup Analyzer Input to Key Access CABLE TV ANALYZER allows you to select an external preamplifier for the carrier to noise test The prearaplifier selection is stored in nonvolatile analyzer memory This means that the analyzer retains the selection even when power is turned off until a new selection is made Press CABLE TV ANALYZER Setup Analyzer Input to access EXT AMP YES NO Key Access CABLE TV ANALYZER Quick Reference EXT PAD YES NO EXTERNAL Softkey Descriptions Cabie TV Analyzer Functions can be used to compensate for the amplitude loss caused by using a 50 0 to 75 Q external matching pad A 50 2 to 75 Q external matching pad is used to match the signal from a 75 Q impedance system to a spectrum analyzer with a 50 Q impedance input The external pad function compensates for the 5 8 dB amplitude loss of the external pa
138. of the screen indicates the frequency and amplitude differences between the two markers The display mode must not be changed between log and linear while using a delta marker NOTE If there are already four markers when MARKER A is pressed a nonactive marker disappears the active marker becomes a reference marker and the delta marker becomes the active marker Key Access or MARKER A SPAN sets the start and stop frequencies to the values of the delta v markers The start and stop frequencies will not be set if the delta marker is off Key Access 4 68 Quick Reference MARKER AUTO FFT HARKER CF MARKER CF STEP Softkey Descriptions Cable TV Analyzer Functions functions exactly like the CONTINUS FFT softkey if the spectrum analyzer is already in zero span If the analyzer is not in zero span it activates a marker that must be placed on the signal that will have an FFT performed on it and MARKER AUTO FFT must be pressed again The resolution bandwidth setting must be wide enough to mode the displayed modulation signals Refer to Chapter 5 Measuring Amplitude Modulation Using the Fast Fourier Transform for more information Press uae to return the mu to normal pets can be rec m from register N Key Access MEAS USER changes the analyzer settings so that the frequency at the marker becomes the center frequency Key Access Or PEAK SEARCH changes the center frequency step s
139. off the air tune configuration selecting 4 9 ON 4 196 ONCYCLE command 4 23 ONDELAY command 4 23 ONEOS command 4 23 on event commands ONCYCLE 4 23 ONDELAY 4 23 ONEOS 4 23 ONMKR 4 23 Index 18 ONPWRUP 4 23 ONSRQ 4 23 ONSWP 4 23 ONTIME 4 23 TRMATH 4 23 ONMER command 4 23 on off switch 3 4 ONPWRUP command 4 23 on screen signal positioning horizontal 4 34 vertical 4 35 ONSRQ command 4 23 ONSWP command 4 23 ONTIME command 4 23 operation local 4 66 options dispiayed 4 110 output power 4 113 output screen data 4 30 overview menus and softkeys 3 15 paintiet printer 4 108 PAINTJET PRINTER 4 80 PAL 4 80 PAL M 4 80 PAL video format 4 119 PARAM AUTO MAN 4 8 pass code 4 36 peak next 4 78 next left 4 78 next right 4 78 peak detection mode positive negative 4 46 PEAK EXCURSN 4 81 Peak Menu 4 81 peak response routine 4 127 peak search outside of the zone 4 138 PEAK SEARCH 3 19 4 81 peak table 4 83 mode 4 83 sorting 4 83 peak to peak measurement 4 70 PEAK ZOOM 4 82 percent amplitude modulation 4 6 phase lock on off 4 6 LOCK ON OFF 4 4 4 6 Index 19 p cture and sound 4 82 picture on off 4 82 PIX amp SND ON OFF 4 82 PK MODE lt gt DL NRM 4 83 PK SORT FRQ AMP 4 83 PK TABLE ON OFF 4 83 PLAN 1 4 84 PLAN 2 4 84 PLAN 3 4 84 PLAN 4 4 85 PLAN 5 4 85 Plot Config 4 85 pl
140. oftkey Descriptions Cable TV Analyzer Functions displays the output produced by the main coil driver on the A analog interface assembly This is a service diagnostic function and is for service use only Key Access returns the analyzer to the main menu Key Access SYSTEM MEAS or SWEEP displays the main coil span signal MC_SPAN from the span dividers on the A7 analog interface assembly This is a service diagnostic function and is for service use only Key Access Option 011 only allows the user to adjust the frequency of the tracking generator oscillator manually using the step keys or knob The tracking adjust is tuned to maximize the amplitude of the trace Key Access AUX CTRL turns the selected marker on or off One of the four markers must first be selected by the SELECT 1 2 3 4 key otherwise marker 1 or the last selected marker will be tur med on or off W hen a new cd is turned on by PRO clon alu ays switches to AUTO ond e marker is put on the trace that is selected by the AUTO mode Key Access Quick Reference NN 4 67 Softkey Descriptions Cahile TV Analyzer Functions activates a second marker at the position of the first marker If no marker is present two markers appear at the center of the display The amplitude and frequency of the first marker is fixed and the second marker is under your control Annotation in the active function block and in the upper right corner
141. on 041 interface buses of the cabie TV analyzer provides detected video output before the anslog to digital conversion proportional to vertical deflection cf the trace accepts the positive edge of an external voltage input that triggers the cable TV analyzer internal Sweep source indicates when the cable TV analyzer is sweeping or can be grounded ta stop sweeping connector is provided with the interface connector provides a voltage ramp proportional to the sweep and the cable TV analyzer span 0 V to 10 VI Getting Started 3 7 Hold Key Knoh Quick Tour Getting Acquainted with the HP 8591C Cable TV Analyzer Data Controls Data controls are used to change values for functions such as center frequency start frequency resolution bandwidth and marker position The data controls will change the active function in a manner prescribed by that function For example you can change center frequency in fine steps with the knob in discrete steps with the step keys or to an exact value with the number units keypad For example resolution bandwidth which can be set to discrete values only is changed to predetermined values with any of the data controls Deactivate functions with HOLD which is found under the DISPLAY key The active function readout is blanked indicating that no entry will be made inadvertently by using the knob step keys or kevpad Pressing a function key re enables the data controls
142. on s FCC channel identification plan part 76 612 Key Access TV RECEIVER Option 011 only activates the automatic leveling control ALC function for internal INT leveling or external XTAL or MTR leveling The external leveling input located on the rear panel of the analyzer can be used with a power meter or crystal that has a positive or negative voltage output See specifications and characteristics in your calibration guide for the leveling input characteristics External leveling increases the amplitude accuracy by improving the effective source match The meter MTR position narrows ALC loop bandwidth so an HP power meter can be used Key Access AUX CTRL Quick Reference 4 9 Softkey Descriptions Cahle TV Analyzer Functions ALC TEST ni DLP CARD ALL TESTS Amp Cor ANP COR 4 10 Option 011 only breaks the leveling loop of the automatic leveling control in the tracking generator This is a service diagnostic function and is for service use only Refer to the service guide for more information Key Access saves all the downloadable programs and key definitions that are in analyzer memory onto the memory card If the downloadable program was stored using a prefix the file name for the downloadable program consists of d prefix register number If no prefix was specified the data is stored with the file name d register number Key Access SAVE allows you to select ail tests f
143. or Plotting T XE 3 27 cf Memory Card Insertion and Battery Replacement T Changing the Memory Card Battery 2 829 Fo Procedure to Change the Memory Card Battery sow 0 Analyzer Battery Information 8 832 4 Softkey Descriptions uu What You ll Find in This Chapter 4 2 ue Service Functions hod dp Bn Se E Ree nre 4 3 t l Service Calibration Functions uu P 4 3 Service Diagnostic Functions c thet eh 4 4 o Y Service Diagnostic Functions c ontinued TP 4 5 Scene d Cable TV Analyzer Functions ls 4 6 E 5 Key Menus PN Index e 1 Dy Contents 2 Quick Reference 4 Figures 2 1 Setting the Line Voltage Selector Switch 2 2 3 1 HP 8591C Cable TV Analyzer 3 2 9 8 3 4 3 5 5 3 6 Relationship between Frequency and Amplitude 3 1 3 8 Checking the Line Fuse Reference Connector Front Panel Feature Overview Rear Panel Feature Overview Adjusting the Fine Focus Screen Annotation Reading the Amplitude and Frequency Inserting the Memory Card 3 9 Memory Card Battery Date Code Location 3 10 3 11 Memory Card Battery Replacement Rear Panel Battery Information Label 2 7 2 12 3 4 3 6 3 10 3 11 3 18 3 20 3 28 3 30 3 31 3 32 Quick Reference Contents 3 Tables 2 l Accessories Supplied with the Cable TV Analyzer 2 2 Power Requirements 2 3 AC Power Cables Available 3
144. or a comfortable viewing intensity 2 Use an adjustment tool or small screwdriver to access the fine focus adjustment See Figure 3 4 Adjust for a focused display FINE FOCUS ADJUSTMENT Figure 3 4 Adjusting the Fine Focus EIEII EIEIO RR 3 10 Getting Started Screen Annotation Figure 3 5 shows an example of the annotation that may appear on a cable TV analyzer screen The screen annotation is referenced by numbers and is listed in Table 3 1 The function key column indicates which front panel key or softkey activates the function related to the screen annotation Refer to the HP 8591C Cable TV Analyzer Spectrum Analyzer Reference User s Guide for more information on a specific function key Refer to Table 3 2 for the screen annotation codes for trace trigger and sweep modes 1983 EXTERNAL KEYBOARD RK 599 9 MMz AT 20 dB PG 10 0 dB Hz OFFST 100 0 MHz SPAN 200 0 MHz MHz VBW 300 kHz SWP 20 m 9 3 3 9 MH Figure 3 5 Screen Annotation a AMPIA HIR ET i a a a a a aa aaa a a a a a a AAAA AAAA Getting Started 3 11 Quick Teur Screen Annotation Table 3 1 Screen Annotation Description Function Key DETECTOR SMP PK REF LVL heed detectar mode 1 reference level time and date display screen title Time Date Change Title ATTEN AUTO MAN BF attenuation preamplifier gain 7 exter
145. or the current y selected channel Key Access SYSTEM HEAS accessed by CAL Amp Cor accesses the menus for entering and editing the current amplitude correction factors Key Access when accessed by AMP COR stores the current amplitude correction fac tors table in analyzer memory or on the memory card When accessed by RECALL AMP COR recalls the amplitude correction factors table from either analyzer memory or the memory card Amplitude correction factors are saved with an a before the memory card file ns Screen titles are not recalled with the data Refer To Save a Limit Line Table or Amplitude Correction DE in Chapter 3 for more information Key Access Or Quick Reference AMP CUR ON OFF AMPLITUDE Amptd Units AN LOG ON OFF Softkey Descriptions Cable TV Analyzer Functions turns the current amplitude correction factors on or off Key Access activates the reference level function and accesses the amplitude menu The softkeys accessed when you press change reference level input attenuation vertical scale mixer level amplitude units input impedance and amplitude offset accesses the softkeys that change the amplitude units The amplitude units can be changed by pressing dBm dBmV dBuV Volts or Watts Key Access AMPLITUDE turns on the analog display mode This is a digital implementation of an analog display combining the advantages of both types of di
146. ot menu 4 86 PLOTTER ADDRESS 4 85 plotter configuration 4 29 plotter output 4 86 plotting 4 30 4 33 plotting to laserjets 4 87 PLT _ _ LOC _ _ 4 86 PLT MENU ON OFF 4 86 Pit Port Config 4 86 PLT PORT HPIB PAR 4 86 PLT PORT SER PAR 4 86 PUTS PG 12 4 4 87 POINT 4 87 point deletion 4 38 positive peak detection mode 4 40 power bandwidth 4 80 power cable 2 10 power input 3 7 power measurement 4 88 adjacent channel power 4 8 adjacent channel power extended 4 9 channel bandwidth 4 25 channel power 4 25 channel spacing 4 25 continuous sweep mode 4 29 oceupied b ndwidth 4 80 power bandwidth 4 80 turning off 4 72 power measurement setup 4 109 Power Menu 4 88 POWER ON IP LAST 4 88 power on state of analyzer 4 88 power requirements 2 6 preamplifier gain 4 54 predetermined correction factors 4 36 prefix catalog of 4 23 Veientes a aaa a e TITTEN IIT RN t a TIT a APP clearing 4 27 entry 4 24 selection 4 106 PRESET 3 4 4 89 PRESET 4 02 preset conditions common 4 90 for all models 4 92 model specific 4 90 Prev Menu 4 93 PREV PAGE 4 93 print black and white 4 61 Print Config 4 94 printer HP PaintJet 4 30 PRINTER ADDRESS 4 94 printer configuration 4 29 PRINTER SETUP 4 94 printing 4 30 4 33 HP PaintJet 4 80 print menu 4 95 PRINT REPORT 4 94 Prn Port Config 4 95 PRN PORT HPIB PAR 4 95 PRN PORT SER PAR
147. played as the sequence progresses CAL DONE appears when the routine is completed Any failures or discrepancies produce a message on the screen See Error Messages Preparing for Use Preparing Your Cahle TV Analyzer for Use 4 When the frequency and amplitude self calibration routines have been completed successfully store the correction factors by pressing CAL STORE The self calibration routines calibrate the cable TV analyzer by generating correction factors The softkey CAL STORE stores the correction factors in the area of cable TV analyzer memory that is stored when the cable TV analyzer is turned off the cable TV analvzer will automatically apply these factors in future measurements If CAL STORE is not pressed the correction factors remain in effect until the cable TV analyzer is turned off Getting Started 2 15 Preparing for Use Preparing Your Cable TV Analyzer for Use Step 7 Perform the tracking generator self calibration routine Option 011 only This procedure is for cable TV analyzers equipped with Option 011 only the tracking generator self calibration routine should be performed prior to using the tracking generator NOTE Since the tracking generator calibration routine depends on the accuracy of the absolute amplitude level of the cable TV analyzer the cable TV analyzer amplitude calibration should be done prior to using CAL TRK GEN E To calibrate the tracking generator connect t
148. r is displayed at the selected marker frequency This graph function is used after doing a channel power measurement with the CHANNEL POWER softkey Key Access Option 011 only activates ON or deactivates OFT the power sweep function which sweeps the output power of the tracking generator over the selected power sweep range The value of the power sweep range is displayed in the active function block when PWR SWP ON OFF is turned on Key Access AUX CTRL accesses softkey menus that allow you to recall data from the memory card or analyzer memory recalls an amplitude correction factors table from the current mass storage device analyzer memory or memory card Key Access Quick Reference 4 97 Softkey Deseriptions Cahle TV Analyzer Functions Ree baa RECALL FRM CRD 4 98 allows you tO access DATA TO PRINTER and DATA TO SCREEN DATA TO PRINTER sends the test results from a file on a RAM card to a printer DATA TO SCREEN sends the test results from a file on a RAM card to the screen Press CABLE TV ANALYZER SYSTEM MEAS More f of 2 to access Recall Data Key Access SYSTEM MEAS allows you to recall a previously saved test plan from a RAM card Recalling a test plan overwrites the current test plan If you do not want the current test plan to be overwritten save the current test plan before recalling a test plan Press CABLE TV ANALYZER SYSTEM MEAS Recall ie to access
149. rature it is only for your convenience Hf you do not enter a temperature the default temperature entry will either be the temperature that was previously entered or if a temperature reading was not previously entered a 0 On the RAM card the temperature entry is stored in the test data file The temperature entry is printed when the test data is printed In analyzer memory the temperature entry is not stored with the current test plan in plans 1 through 5 The temperature entry is stored in nonvolatile analyzer memory however Storing the temperature entry in nonvolatile memory means that once a temperature is entered it will be used as the temperature until a new temperature is entered or the HP 85721A program is deleted from analyzer memory Key Access SYSTEM MEAS Quick Reference 4 47 Softkey Descriptions Cable TV Analyzer Functions ENTER PRI accesses the menu for entering the value of the pulse i repetition interval PRD Key Access ENTER C REF EDGE accesses the menu used to define the edge of the pulse that m l will be used as the time reference Key Access SWEEP ENTER WIDTH accesses the menu for entering the value of the pulse width T Press MARKER QN to activate a delta marker Key Access SWEEP ERASE DLP MEM allows you to dispose of the DLPs all traces defined by TRDEF and all VAREF variables that are in analyzer memory NOTE Use DELETE FILE to sel
150. remove covers e If this instrument is used in a manner not specified by Hewlett Packard Co the protection provided by the instrument may be impaired Before this instrument is switched on make sure its primary power circuitry has been adapted to the voltage of the ac power source Failure to set the ac power input to the correct voltage could cause damage to the instrument when the ac power cable is plugged in M M M M M MM A Q qP Getting Started 1 7 About This Guide Before You Begin Symbols Used on the Cable TV Analyzer N The instruction documentation symbol The product is marked with this symbol when it is necessary for the user to refer to the instructions in the documentation CE The CE mark is a registered trademark of the European Community If this mark is accompanied by a year it indicates when the design was proven eretier eset a i e e e T TTE TIMER REP a aa a e ENSIS 1 8 Getting Started Preparing for Use Preparing for Use What You ll This chapter describes the process of getting the cable TV analyzer ready to Learn in This when you have just received it In this chapter you will Chapter e Perform an initial inspection e Set the cable TV analyzer for the selected AC power source e Turn the cable TV analyzer on for the first time e Perform automatic self calibration routines P a aaa ana aaan aaa r ao 2 2 Get
151. rmance CPL RBW ON OFF Key Access automatically selects the optimum resolution bandwidth for an unmodulated pulse if the pulse width has been entered If the pulse width has not been determined the resolution bandwidth will not be coupled to the pulse parameters and a warning message will occur If a resolution bandwidth is entered manually the coupling will be turned off Key Access SWEEP Quick Reference 4 33 Softkey Descriptions Cahle TV Analyzer Functions CPL VB ON OFF Create TstPlan CROSSMOD CRT HORZ POSITION 4 34 automatically selects the optimum sweep time if the pulse repetition interval has been entered If the pulse repetition interval has not been determined the sweep time will not be coupled and an error message will occur If a sweep time is entered manually the coupling will be turned off Sweep time coupling oniy applies to the frequency domain window Key Access SWEEP automatically selects the optimum video bandwidth if the gate length has been entered If the gate length has not been determined the video bandwidth will not be coupled to the gate length and an error message will occur If a gate length is entered manually the coupling will be turned off Key Access SWEEP allows you to access the functions used for building a test pian Key Access SYSTEM MEAS initiates t
152. rrent prefix to the prefix used when the state was saved If the windows display mode is being used the instrument state can only be recalled into the active window Key Access RECALL recalls into analyzer memory a trace saved on the memory card Limit lines and amplitude correction factors are recalled by pressing Card Trace LIMIT LINES or AMP COR Key Access initiates the Carrier Level and Frequency measurement initiates the Carrier to Noise measurement Key Access CHANNEL MEAS catalogs all the programs and variables stored in analyzer memory in bytes along with the remaining memory available in bytes Key Access RECALL or catalogs the amplitude correction factor files that are on the memory card Key Access RECALL or Quick Reference 4 21 Softkey Descriptions Cable TV Analyzer Functions CATALOG DISPLAY CAT LOG mpi Catalog Internal CATALOG LMT LINE 4 22 accesses a menu with the cataloging functions for the memory card Key Access RECALL or SAVE allows you to view a listing of the files stored on a RAM card or a ROM card catalogs all of the display images that are on the memory card A display image can be recalled to the analyzer by using the CARD DISPLAY softkey Key Access RECALL or catalogs all of the downloadable programs DLPs that are in analyzer memory or on the memory card Downloadable programs can be saved in analyzer memory by either
153. ry write the date of battery replacement on the rear panel label puli2e Figure 3 11 Rear Panel Battery Information Label E MM 3 32 Getting Started shot NA RL AALAN EENAA AAEN AENA ERATE M a Softkey Descriptions What You ll Find in This Chapter Softkey Descriptions This chapter describes functions and controls of the cable TV analyzer The front panel keys and softkey functions are listed alphabetically followed by a brief description Refer to the HP 8591C Cable TV Analyzer Spectrum Analyzer Reference User s Guide and HP 8591C Cable TV Analyzer Cable TV Measurements User s Guide for more detailed information Brief descriptions for service functions have also been included in this chapter However for more detailed descriptions and information about the use of each function refer to the HP 8590 E Series and L Series Spectrum Analyzers and HP 8591C Cable TV Analyzer Assembly Level Repair Service Guide A listing of all service calibration and service diagnostic functions has been provided in the following Service Functions section All softkeys and their relationship to the front panel keys are illustrated in Chapter 5 3 M 4 2 Quick Reference Service Functions Two types of functions are available for service use only e Service calibration functions e Service diagnostic functions These service functions
154. s TER STRT FRO DO FRO RESP TS CONTS SWEEP ENTER STOP FRG T E Rf cE CENTER FREQ f MARKER ON RECALL FRM ENT ECALL i MARKER fs PREVIOUS DENEN CONTINUE MARKER OFF FAST SWEEP MAIN MENI n I STOPT f oi rr SYSTEM FRO RSF i S tn MENS STOP TEST SLOW SWEER_ iN CHNE FRG RSP gt DIF GAIN D MARKER 1 OLD c S TEST MARKER 2 m RESTART MAX HOLD FRO RESP Main 3 of 3 SELECT LINE MAIN MENU FLD BOTH EVEN ODD GCR MuLTi BURST Select Tesi Sig NTC CMBNTN CONT INUE 4 SiN X X SELECT LINE IEL ODD of AVERAGES AUTO Si Prev Menu Prev Menu MARKER MARKE i SELECT LINE MARKER 2 it FIELD ODD EVEN MORE INFO MAIN MENU AUTO SIG SERCH MORE NFO slect Test Sig CONT t NUE FCC COMPOSIT MAIN MENU NTC 7 COMPOSIT Prev Menu MORE INFO MAIN MENU 5 12 Quick Reference SPECTRUM ANALYZ CABLE TY RECEIVER TV ANALYZER MORE TER LOCATION ENTER TEMF Recail Measure Now i Timed a i DUMP DUMP DUMP Moin INT Menu INTERVAL TO PRINTER TG RAM CARD Main Meng Menu SCREEN 7 G PRINTER RAM CARD Key Menus Cahle TV Analyzer Functions Teipicn MAIN ME MAIN MENU PRINT REPOR STGRE Main Menu TODAY S DATE TODAY S TIMEDATE Prov Menu tog SARB TODAY S D Quick Reference 5 13 Key Menus Cahle TV Analyzer Functions SEE PREVIOUS
155. s occ BW POWER OCCUPIED BANDWDTH PAIWTIET PRINTER PAL PAL M allows the user to enter the percent of the power desired when using the occupied bandwidth measurement under the Power Menu softkey Key Access MEAS USER integrates the power of the displayed and puts markers at the frequencies containing a selected percent of the power The measurement defaults to 99 of the occupied bandwidth power Key Access MEAS USER selects a color print for use with an HP PaintJet printer only The traces are displayed in orange trace A blue trace B and red trace C The graticule screen annotation and user information are displayed in black Key Access CONFIG allows you to trigger on the PAL video format Key Access allows you to trigger on the PAL M video format Key Access TRIG M M Q HR Quick Reference P RAM AUTO MAN PEAK EXCURSN Peak Menu PEAK SEARCH Softkey Descriptions Cable TV Analyzer Functions lets the user choose between automatically or manually setting the parameters used for the measurement functions under the Power Menu softkey Key Access MEAS USER sets the minimum amplitude variation of signals that the marker can identify as a peak Key Access PEAK SEARCH accesses the same softkeys that are available when is pressed see the key description for below Pressing Peak Menu instead of allows you to us
156. s PRINT REPORT Option 051 only allows you to change the HP IB address of the printer The printer address is set to 1 by pressing DEFAULT CONFIG Key Access CONFIG resets the printer sets the printer to 60 lines per page and skips line perforations This function enables you to obtain up to three printouts per page The printer paper should be at the top of the form before using this function The PRINTER SETUP function may not work with printers that are not recommended see Chapter 9 for recommended printers Key Access Quick Reference Prn Port Config PRN PORT HPIB PAR PRN PORT SER PAR PRT MENU ON OFF Puise Param Softkey Descriptions Cable TV Analyzer Functions Option 041 or 043 only accesses the menus used by Option 041 HP IB and Parallel Interface and Standard Option 043 RS 252 and Parallel Interface to select printer options See the key for more information Front Panel Key Access CONFIG Option 041 only allows you to select between HP IB or parallel printer ports allows you to select between serial or parallel printer ports The BAUD RATE softkey appears in this menu only when serial is selected allows the softkey labels to be printed along with the analyzer display This function operates when the key is used in a print configuration The PRT MENU function is set to ON when DEFAULT CONFIG is pressed Key Access CONFIG accesses the gate utility me
157. s or number units keypad If vou have experimented with other keys and wish to return to a known state press the green key 1 First turn the instrument on by pressing LINE Wait for the power up process to complete 2 Press the green PRESET key 3 Connect the cable TV analyzer CAL OUT to the INPUT 75 Q with an appropriate cable 4 Set the frequency Press the FREQUENCY key CENTER appears on the left side of the screen indicating that the center frequency function is active The CENTER FREQ softkey label appears in inverse video to indicate that center fr equency is the active function The active function block is the space on the screen within the graticule where the center frequency messages appear Functions appearing in this block are active their values can be changed with the knob step keys or number units keypad Set the center frequency to 300 MHz with the DATA keys by pressing 300 MHz The knob and step kevs can also be used to set the center frequency 5 Set the span Press SPAN SPAN is now displayed in the active function block and the SPAN softkey label appears in inverse video to indicate it is the active function Reduce the span to 20 MHz by using the knob pressing the down key ID or pressing 20 MHz Set the amplitude D Getting Started 3 17 Quick Tour Making a Measurement When the peak of a signal does not appear on the screen it may be necessary to adjust the amplitude lev
158. s underlined When the SCALE LOG LIN function is the active function the logarithmic units per division can be changed Values may range from 0 1 to 20 dB per division When LIN is underlined the vertical scale is in linear mode that has a range of 1 kW to 1 pW The reference level value is set to the top of the screen and the bottom graticule becomes zero volts Each division of the graticule is one eighth of the reference level in volts Key Access triggers on the SECAM L video formats Key Access J R RABES ARA Quick Reference SELECT 1234 SELECT AMPLITUD SELECT EL X Softkey Descriptions Cable TV Analyzer Functions selects one of the four possible markers marker can be turned on once it is selected A marker that has already been turned on will become active when it is selected If a marker has already been turned on and assigned to a specific trace it will become active on that trace and the MK TRACE AUTO ABC softkey will have the appropriate trace letter underlined Key Access allows you to enter either the amplitude value for the displayed upper or lower limit line segment or the amplitude value for the current amplitude correction point Enter the amplitude value for the selected frequency or time by using the data keys Change an amplitude value by using the step keys or the knob Press to correct errors Key Access or DISPLAY allows you to enter the
159. scription HP Part Numher Cemments Cable TV RF video measurements personality HP 85721A Shipped with analyzer Cable 75 O BNC 5062 6452 Shipped with analyzer Memory card holder 9222 1545 Shipped with analyzer Memory card 128 kilobyte HP 82215A Shipped with analyzer Adapter BNC Im to Type F fi 1250 2477 Shipped with analyzer Gotien 107 only Coupler 0855 0704 Shipped with analyzer Option 107 only Power cable See Table 2 3 Shipped with analyzer Reference connector 1250 1439 Shipped connected between the 10 MHz REF QUT and the EXT REF IN on the rear panel of the analyzer Soft carrying pack 8211 7107 Shipped with analyzer Documentation e HP 8910 Cable TY Analyzer Spectrum Shipped with analyzer Analyzer Reference User s Guide e HP 8591C Cable TY Analyzer Cable TV k Shipped with analyzer Measurements Users Guide AHP 8590 E Seres Spectrum Analyzers and j Shipped with analyzer HP 8591 Cable TV Analyzer Calibration Guide e HP 65910 Cable TV Analyzer Getting 5 Shipped with analyzer Started and Quick Reference Guide this book e HP 8590 F Series and l Seres Spectrum j Shipped with analyzer Analyzers and HP 85910 Cable TV Analyzer Programmers Guide p HP 8590 E Series and L Series Spectrum Shipped with analyzer Option 9 5 only Analyzers and HP 85910 Cable TV Analyzer Assembly level Repair Service Guide e HP 8590 E Series and L Series Spectrum Shipped with analyzer ption 915 only Analyzers and HP 85910 Cab
160. self calibration routines 3 21 CAL OUT 3 4 CAL STORE 2 15 3 22 4 19 CAL TIMEBASE 4 3 4 19 CAL TRK GEN 2 16 3 24 4 20 card changing the battery 3 29 inserting a memory card 3 28 Card Config 4 20 CARD DISPLAY 4 20 CARD DLP 4 20 CARD STATE 4 21 Card Trace 4 21 carrier level 4 25 CARRIER LEVEL amp amp FRQ 4 21 JARRIER NOISE 4 21 CATALOG ALL 4 21 CATALOG AMP COR 4 21 Catalog Card 4 22 2ATALOG CARD 4 22 CATALOG DISPLAY 4 22 CATALOG DLP 4 22 cataloging the RAM or ROM card 4 22 Catalog Internal 4 22 CATALOG LMT LINE 4 22 CATALOG ON EVENT 4 23 SATALOG PREFIX 4 23 CATALOG REGISTER 4 24 CATALOG STATES 4 24 CATALOG TRACES 4 24 CATALOG VARIABLS 4 24 CENTER FREQ 4 24 center frequency 4 24 window zone 4 138 center frequency step size 4 24 center frq user defined channel 4 131 Index 5 CF STEP AUTO MAN 4 24 change function values 3 6 3 8 change prefix edit done 4 44 Change Prefix 4 24 Change Titie 4 25 changing windows 4 77 CHANNEL BANDWDTH 4 25 channel format HRC 4 25 IRC 4 25 over the air 4 25 standard 4 26 channel number range 4 46 CHANNEL POWER 4 25 CHANNEL SELECT 4 25 channel selection view 4 134 CHANNEL SPACING 4 25 Channel Tuning 4 26 characters 4 8 4 60 4 117 4 187 check analyzer operation 4 29 checking the fuse 2 8 CISPR testing 4 46 E CLDI 4 26 tow Clear 4 27 Seno Re d clear display active function area 3 6 3 8 c
161. set value can be changed by using a service function Select the computational input impedance by pressing INPUT Z 502 750 or by entering 75 or 50 using the numeric keypad Key Access AMPLITUDE selects between spectrum analyzer memory and the memory card for the save and recall functions Key Access RECALL or SAVE Quick Reference Softkey Descriptions Cable TV Analyzer Functions INTERNAL STATE recalls the saved analyzer state from the selected state a register Recalling a state from the analyzer memory displays the time and date when the state data was stored Key Access RECALL Internal Trace accesses a softkey menu that allows you to either select the trace in which the trace data is to be recalled trace A trace B or trace C recall the current limit line tables or recall amplitude correction factors Key Access IRC allows you to select the incrementally related carriers IRC channel tuning configuration IRC is the configuration in which all channels except channels 5 and 6 are at the Federal Communication Commission s FCC standard channel frequencies The IRC frequency assignments are defined in the FCC channel identification plan part 76 612 If you do not select a channel tuning configuration the default configuration is the standard STD configuration The choices for the channel tuning configuration are standard STD off the air AIR incrementally related carri
162. signal starts a routine that digitally averages display signals and noise olds and displays the trace data when used after blanking trace T holds and displays the trece B data holds and displays the trace C data Key Access DISPLAY n NAA dbl te ARR 4 12 l Quick Reference ANALYZER ADDRESS ANALYZER GAINS Analyzer Input Softkey Descriptions Cable TV Analyzer Functions Option 041 only allows you to set the HP IB address of the analyzer The analyzer address is set to 18 by pressing DEFAULT CONFIG Key Access CONFIG displays the current value of the gain for various functional blocks within the analyzer The gain values will vary depending on the current analyzer settings This is a Service diagnostic function and is for service use only Refer to the service guide for more information Key Access allows you to select an external pad an external preamplifier and total power at the input to the analyzer An external 50 Q to 75 Q pad is used for analyzers with 50 Q input impedances The EXT PAD YES NO function compensates for amplitude loss caused by an external pad An external preamplifier is used for the Carrier to Noise measurement The external pad and preamplifier settings are stored in non volatile analyzer memory This means that the analyzer retains the selection even when power is turned off until a new selection is made The TTL PWR INPUT measures the tota
163. sly saved test plan The operation of PLAN 3 is similar to PLAN 4 except that the test plan is stored in and recalled from trace register 8 Key Access SYSTEM MEAS 4 84 Quick Reference PLAN 4 PLAN 5 Plot Config PLOTTER ADDRESS Softkey Descriptions Cahle TV Analyzer Functions allows you to select test plan 4 as the test plan number for either saving the current test plan or recalling a previously saved test plan The operation of PLAN 4 is similar to PLAN 1 except that the test plan is stored in and recalled from trace register 9 Key Access SYSTEM MEAS allows you to select test plan 5 as the test plan number for either saving the current test plan or recalling a previously saved test plan The operation of PLAN 5 is similar to PLAN 1 except that the test plan is stored in and recalled from trace register 10 Key Access SYSTEM MEAS accesses the menu used to address the plotter and to select plotter options See the COPY key for more information Key Access Option O41 only changes the HP IB address of the plotter The plotter address is set to 5 when DEFAULT CONFIG is pressed Key Access CONFIG Quick Reference 4 85 Softkey Descriptions Cable TV Analyzer Functions PLT MENU ON OFF Plt Port Config PLT PORT HPIB PAR PLT PORT SER PAR 4 56 selects the position of the plotter output The highlighted portion of the softkey label indicates where the plot is
164. splays The display is made up of 401 horizontal points or trace elements In the analog display mode each trace element can display from 1 to 40 dots or measurements The following table shows commands that are not available with Analog operation Quick Reference 4 11 Softkey Descriptions Cable TV Analyzer Functions Table 4 1 Commands Not Available with Analog Operation Command Description exchanges trace and trace B puts the difference between trace A and trece B into trace A puts the difference between trace B end the display line in trace B initially erases trace B and then displays it continuously initially erases trece C and then displays it continuously turns AM or FM demodulation on and off changes zero span data to the frequency domain using an FFT turns the marker counter on and off stops the analyzer sweep at the marker fer the defined of the dwell time updates trace A with the maximum level at each point each sweep updates trace B with the maximum level at each point each sweep updates trace C with the minimum level at each point each sweep the difference between A and B is added to the display line and put inte trace A moves the signal closest to the marker to center screen and keeps it centered finds the highest signal peak turns on marker track and activates span sets lower boundary to the active trace Starts a routine that adiusts tracking te peak the tracking generator
165. t the signal peak You can also use the PEAK SEARCH key which automatically places a marker at the highest point on the trace Readouts of marker amplitude and frequency appear in the active function block and in the upper right corner of the display Look at the marker readout to determine the amplitude of the signal If another function is activated the frequency and amplitude can still be identified by looking at the marker readout in the upper right corner of the screen Getting Started 3 19 Measurement Summary 3 20 Getting Started Connect the cable TV analyzer CAL OUT to the INPUT 75 0 and press the PRESET key Set the center frequency by pressing the following keys FREQUENCY 300 MHz Set the span by pressing the following keys SPAN 20 MHz The calibration signal is 20 dB two graticule divisions below the top of the screen using these cable TV analyzer settings If desired adjust the reference level press to activate the reference level and use the knob or step keys to change the reference levet Determine the amplitude and frequency of the signal You can either press Or press and move the marker to the signal peak Read the amplitude and frequency The display screen should look like the one in Figure 3 7 Frequency is displayed horizontally and amplitude power is displayed vertically AB 33 00 Ju 29 i d MKA 300 05 Mhz REF 48 8 dBmv E 300 05 MH2 i 5 NE x i 28 98 abv i PEAK
166. tility Instrument Preset Marker Table N dB Points Occupied Bandwidth Peak Table Peak Zoom TOI measures percent amplitude modulation measures adjacent channel power self calibration routines measures channel power built in self test routine deletes user s items from analyzer memory initiates FFT on zero span input accesses time gate functionality returns analyzer to preset state lists all of the active markers measures N dB bandwidth measures occupied bandwidth lists displayed signal peaks initiates the peak zoom routine makes a third order intercept measurement 4 136 Quick Reference X FINE TUNE DAC YES YZ_ Spc Clear ZERO MARKER ZERO SPAN Softkey Descriptions Cable TV Analyzer Functions displays the output of the YTO extra fine tune DAC FM TUNE that is on the A7 analog interface assembly This is a service diagnostic function and is for service use only Key Access allows you to confirm that you want to perform the function If you press CLEAR TST PLAN and then press YES you have selected to clear the current test plan from analyzer memory If you enter a channel by using ENTER BY CHANNEL or ENTER BY RANGE and then press YES the channel or range of channels will be treated as scrambled channels If you press Measure Now and then press YES CTB testing will be performed YES is accessed by pressing CLEAR TST PLAN or entering chan
167. ting Started Preparing Your Cable TV Analyzer for Use Prepare the cabie TV analyzer for use by performing the following procedure 1 Perform an initial inspection 2 Set the line voltage selector switch 3 Check the fuse 4 Connect the power cable 5 Turn on the cable TV analyzer for the first time 6 Perform the frequency and amplitude self calibration routines 7 Perform the tracking generator self calibration routine For Option 011 only Detailed information for all of the steps in this process are included in this chapter in the following pages Reducing Damage Caused hy ESD The following suggestions may help reduce ESD damage that occurs during testing and servicing operations Before connecting any coaxial cable to an cable TV analyzer connector for the first time each day momentarily ground the center and outer conductors of the cable e Personnel should be grounded with a resistor isolated wrist strap hefore touching the center pin of any connector and before removing any assembly from the unit e Be sure that all instruments are properly earth grounded to prevent a buildup of static charge Refer to the HP 85970 Cable TY Analyzer Spectrum Analyzer Reference User s Gude tor more information about static safe accessories that can be obtained from Hewlett Packard Getting Started 2 3 Preparing for Use Preparing Your Cable TV Analyzer for Use Step 1 Perform an initial inspectio
168. tion routines Learn how to insert the memory card and about the memory card battery Learn about the cable TV analyzer battery 8 2 Getting Started Getting Acquainted with the HP 8591C Cable TV Analyzer Figure 3 1 HP 8581C Cable TV Analyzer The HP 8591C Cable TV Analyzer is a small lightweight test instrument that covers the 1 MHz to 1 8 GHz frequency range The HP 8591C Cable TV Analyzer is a portable instrument ideal for field use It comes in a durable carrying case that makes it easy to transport and protects it from moisture and dirt The cable TV analyzer is fully operational within the case so you never need to remove it The HP 8591C Cable TV Analyzer comes equipped with the HP 85721A Cable TV Measurements and System Monitor Personality installed The Cable TV Measurements and System Monitor Personality is a downloadable program DLP consisting of measurement routines useful for cable television applications Getting Started 3 5 Quick Tour Getting Acquainted with the HP 8591C Cable TV Analyzer Front Panel Features The following section provides a brief overview of front panel features illustrated in Figure 3 2 Refer to HP 8591C Cable TV Analyzer Spectrum Analyzer Reference User s Guide for more information about these features 9 o O 5 C nnd MARKER CTy 3 CONTROL C077 tai 7 F f m WINDOWS ww i
169. tions Safety Notes f General Safety Conddstalane Symbols Used on the Cable TV Analy zer 2 Preparing for Use What You ll Learn in This Chapter Preparing Your Cable TV Analyzer for Use Step 1 Perform an initial inspection Step 2 Set the line voltage selector switch Step 3 Check the fuse Step 4 Connect the power cable Step 5 Turn on the cable TV analyzer for the first ine Step 6 Perform the frequency and amplitude self calibration routines Step 7 Perform the tr acking generator solk calibration routine Option 011 only 3 Quick Tour What You ll Learn in This Chapter Getting Acquainted with the HP 8591C C able TV Analyzer AC ae peat Lees Front Panel Veat tes Rear Panel Features Data Controls Hold Key Knob Number U nits Key pad 5tep Keys Fine Focus C Sutton Screen Annotation 1 3 1 4 1 4 1 5 1 6 3 3 Quick Reference Sontents 1 Cable TV Analyzer Functions Led i Ll Menu and Softkey Overview 9 15 m Cable TV Measurements and System Monitor Personality 8 16 14 Making a Measurement 8 7 m Measurement Summary sued 20 C M Improving Accuracy with Self Calibration Kange bdo d a Warmup Time sak 41h ain bok me Bch ewe xo S2 n wes Calibrating the Analyzer B ws ds 3 22 a Calibrating the Tracking Generator Option 011 only 824 i When Is Self Calibration Needed 0 5 B26 ul Printing
170. tor function and loads the highlighted item from the catalog of analyzer user memory to be displayed and edited Refer to the HP 8590 E Series and L Series Spectrum Analyzers and HP 8591C Cable TV Analyzer Prograramer s Guide for more information Key Access RECALL or can be accessed through both the amplitude correction menu and the change prefix menu When accessed from the amplitude correction menu the amplitude correction factors table is erased from the analyzer screen and the amplitude correction menu is restored on screen Use Edit Done when all the amplitude correction factors have been entered Key Access CAL CONFIG DISPLAY RECALL or can be accessed through the limit line menu Pressing EDIT DONE erases the limit line table from the analyzer scr reen and restores the menu acc essed by the Limit Lines softkey Use EDIT DONE when all the limit line values have been entered Key Access allows flatness correction constants to be viewed or modified This is a service calibration function and is for service use only Key Access Quick Reference EDIT LAST Edit Limit Edit Lower Edit Mid Delt Edit Up Low Edit Upper Softkey Descriptions Cable TV Analyzer Functions starts the DLP editor function and allows the most recent item that was being edited in the DLP editor buffer to be accessed again The item will not be in the analyzer user memory until it is processed by th
171. tor switch to the line voltage range 115 V or 230 V corresponding to the available AC voltage See Figure 2 1 Insert a small screwdriver or similar tool in the slot and slide the switch up or down so that the proper voltage label is visible Getting Started 2 1 Preparing for Use Preparing Your Cable TV Analyzer for Use Step 3 Check the fuse The recommended fuse is size 5 by 20 rum rated F5A 250 V IEC approved This fuse may be used with input line voltages of 115 V or 230 V Its HP part number is 2110 0708 With an input line voltage of 115 V an alternate fuse can be used In areas where the recommended fuse is not available a size 5 by 20 mm rated fast blow 5 A 125 V UL CSA approved fuse may be substituted Its HP part number is 2110 0756 Figure 2 2 Checking the Line Fuse The line fuse is housed in a small container beside the rear panel power connector See Figure 2 2 The container provides space for storing a spare fuse as shown in the figure 2 8 Getting Started M i 4 Pod H RN MEE j i H 4 E j i I i b du i m Preparing for Use Preparing Your Cahle TV Analyzer for Use To check the fuse insert the tip of a screwdriver in the slot at the middle of the container and pry gently to extend the container NOTE The fuse container is attached to the line module it cannot be removed The fuse closest to the cable T
172. trace B Updates each trace point if a new maximum level is detected in successive sweeps Key Access lets you change the maximum input mixer level in 10 dB steps from 39 dBmV to 51 dBmV Key Access AMPLITUDE turns off the measurement functions under the Power Menu softkey and restores the analyzer to the state prior to initiating the power measurement Key Access MEAS USER switches between the User Menu and the menu containing Na PTS ON OFF Y AM ON OFF TOI QN OFF Power Menu and FFT Menu If no keys have been defined in the user menu No User Menu is displayed See the HP 8590 E Series and L Series Spectrum A nalyzers and HP 8591C Cable TV Analyzer Programmers Guide for more information about defining keys in the user menu Quick Reference Measure Now MEN LOCKED MIN HOLD C MIN HOLD ON OFF Softkey Descriptions Cable TV Analyzer Functions accesses the functions that allow you to initiate the testing immediately instead of initiating testing at a later time and send the test results to the screen a printer or to a RAM card Pressing Measure Now will display a screen that allows the option of selecting CTB testing Then the DUMP TQ SCREEN DUMP TO PRINTER DUMP TO CARD and Main Menu softkeys are accessed Key Access SYSTEM MEAS indicates that the save lock function is on It replaces the ERASE STATEALL and ERASE TRACEALL softkeys under the CONFIG
173. udio output only Key Access AUX CTRL Quick Reference SRC ATN MAN AUTO SRC PWR OFFSET SRC PWR ON OFF SRC PWR STP SIZE START FREQ Softkey Descriptions Cable TV Analyzer Functions Option O11 only aliows you to select between automatic and manual adjustment of the tracking generator s switching attenuator Key Access AUX CTRL Option O11 only offsets the displayed power of the tracking generator SRC Offset values may range from 100 dB to 100 dB Key Access AUX CTRL Option O11 only activates ON or deactivates OFF the output power of the tracking generator SRC Key Aceess AUX CTRL Option 011 only allows the user to set the step size of the source power level source power offset and power sweep range functions The step size may be values from 32 7 dB to 32 7 dB The default setting is one vertical scale division Key Access AUX CTRL sets the frequency at the left side of the graticule Key Access FREQUENCY Quick Reference 4 113 Softkey Descriptions Cable TV Analyzer Functions START TIME STD allows you to specify the time and the date when testing is to begin for timed measurements The time is specified in 24 hour hour minute format the date is specified in year month and day format If vou do not specify a time the current time is used If you do not specify a date the current date is used If you specify a time earlier tha
174. ul when performing electromagnetic interference EMT measurements Key Access allows a 6 dB resolution bandwidth of 120 KHz This bandwidth is useful when performing electromagnetic interference EMI measurements Key Access For Option 130 only allows a 6 dB resolution bandwidth of 200 Hz This bandwidth is useful when performing electromagnetic interference EMI measurements Key Access exchanges the contents of the trace A register with the trace B register and puts trace A in view mode Key Access TRACE when ON is underlined subtracts the data in trace B from the measured data in trace A A minus sign appears between the trace A status and the trace B status in the screen annotation while the function is active Key Access TRACE copies trace A into trace C Key Access TRACE Quick Reference 4 7 Softkey Descriptions Cable TV Analyzer Functions ABCDEF l l accesses the softkey menu for selecting screen title characters A through F Key Access CAL CONES DIEPLAY RECATE or mn aliows you to stop the measurement ACPGRAPH DN OFF turns the adjacent channel power graph ON or OFF With e ACPGRAPH ON the ACP ratio graph is calculated and displayed and the numeric results are not displayed The value of the ACP ratio is displayed at the selected marker frequency offset from the center frequency This graph function is used after doing an adjacent channel power measure
175. unction is active the key can be used to switch between the two windows while remaining zoomed full sized Quick Reference Key Menus Key Menus This chapter contains the key menu diagrams for the HP 8591C Cable TV Analyzer Each key menu diagram is arranged alphabetically according to the front panel key name NOTE The softkeys in the key menus that specific to the HP 85721A Cable TV RF Video Measurements Personality are described in the HP 8591C Cable TV Analyzer Cable TV Measurements User s Guide 5 2 Quick Reference Key Menus Cable TV Analyzer Functions AMPLE TUDE REF vL ATTEN AUTO MAN SCALE LOG LIN ENT AMP ON OFF Mere i a INPUT REF EYL OFFSET Previous Menu Mere Z cf 3 gsieciing t softkey ng any digit through the eppreariate opii tude lerminator mar ANY ore qs wo ihe Gporopriete 4 de terminctor menu Quick Reference 5 3 Key Menus Cable TV Analyzer Functions d AUTO COUPLE AUTO ALL RES BW AUTO MAN VID BW AUTO MAN ATTEN AUTO MAN SSP TIME AUTO MAN oF STEP AUTO MAN Frock Ge Sux Conn C is N z Monitor TV DwZLi TIME SRE PWR OM OFF 4 34 TRACK ING PEAK MAN TRK ADJUST PHR GN OFF SRE ATN MAN AUTO More wf 2 C x V Cl rcm Ez CHANNEL SELECT PICTURE ON OFF SGUND ON OFF Optrioan GI aniy Afier selectin ris softkey pressing t inrough 9 brings up opprapricte apl i
176. ut power reduction to the mixer can be selected only from the number units keypad Key Access AMPLITUDE or AUTO COUPLE 4 14 Quick Reference AUTO ALL AUTO COUPLE ux Conn Control Softkey Descriptions Cable TV Analyzer Functions couples the following functions resolution bandwidth video bandwidth attenuation sweep time center frequency Step video bandwidth and video bandwidth to resolution bandwidth ratio Key Access AUTO COUPLE accesses the softkey menu of functions that can be coupled Coupled functions are functions that are linked if one function is changed the other function is changed The functions that can be auto coupled are listed below e Resolution bandwidth couples to span e Video bandwidth couples to resolution bandwidth when the analyzer has a video band width to resolution bandwidth ratio of 0 3 e Sweep time couples to span resolution bandwidth and video bandwidth e RF attenuation couples to reference level e Center frequency step size couples to 10 of span accesses the softkey menu used to control the auxiliary outputs and input The auxiliary outputs are controlled by pressing CNTL AO 1 CNTL BO 1 CNTLCO 1 and CNTL DO 1 The status of the auxiliary input control line I can be displayed on the analyzer screen with DISPLAY CNTL I Key Access AUX CTRL Quick Reference 4 15 Softkey Descriptions Cahle TV Analyzer Functions AUX CTRL B lt
177. vailable AC power cables illustrates the plug configurations and identifies the geographic area in which each cable is appropriate ri E P a penny piven pms pu e aoe i i i i b os E i E H 3 E i EEG ae i i v ay i A H ass T is vA 1 Rn Mrd s dius s i 7 E Ea uu Kaer I aov wate i ML EE tl i Roi Ww wE g Preparing for Use Preparing Your Cable TV Analyzer for Use Table 2 3 AC Power Cahles Available CABLE HP PART NUMBER Great Britain Mint Gray 90 S0 Mint Gray Nigerio Zimbabwe Argentina 250v 120 1369 raight at 78 Gray i 21 87 j Australia i 8120 0696 2i 97 Srey Mew Zealand Mainleng Ch i i ee NN gt i o o ic un o N c G h2 to e Repub Arab H 120 1348 Straight N MAS 203 80 3120 1538 90 295 80 i iJapen 100 Y 3 Jade Gras 200 V Brezii Colombia Mexico Philippines Saudio Arabia Tsiwen bs e am Pept lps 4 a T T aes E o oo NK NI tt CO tA c w Gc 4 RM israei gt 0 E M Oo Shown for lor p tg pila for plug For Com industry identifie eie cable inciudi itralb FORMATSO
178. y MEAS USER deactivates the active function and blanks the active function text from the display No data can be accidentally entered using the knob step keys or keypad Activating another function will turn off the hold function Key Access Quick Reference HP B amp W DJ540 HP B amp W PRINTER HRC Softkey Descriptions Cable TV Analyzer Functions selects a black and white print Use this function if you have a black and white HP DeskJet 540 printer Press HP B amp W Printer and then select the HP B amp W PRINTER softkey Start printing by pressing COPY DEV PRNT PLT PRNT and COPY S Front Panel Key Access CONFIG selects a black and white print Use this function if you have a black and white HP printer or if you are using an HP PaintJet printer but want to have a black and white print Key Access CONFIG allows you to select the harmonically related carriers HRC tune configuration HRC is the channel tuning configuration in which the frequency of each video carrier is a multiple of 6 MHz The HRC frequency assignments are defined in the Federal Communications Commission s FCC channel identification plan part 76 612 E you do not select a channel tuning configuration the default configuration is the standard STD configuration The choices for the channel tuning configuration are standard STD off the air AIR incrementally related carriers IRC harmonically related carriers
179. yed signal Key Access AMPLITUDE REI VETERE MARKERS if the FFT mode is already active pressing Fl KERS MAD only activates the FFT markers If the FFT mode is not active then the FFT marker will be activated and the FFT annotation will be displayed but an FFT will not be performed Key Access FB Menu accesses the menu of keys to initiate and evaluate a Fourier dd transform of the analyzer displayed data Activating other analyzer functions will automatically exit the FFT function or will corrupt the display See Table 4 3 Table 4 3 Compatibility of FFT with Other Functions Function Compatibility Info Catalog functions corrupts the display DLP editor corrupts the display Marker table exits FFT N dB points measurement exits FFF Peak table exits FFT Power menu measurements exits FFT Show options corrupts the display exits FFT Time gate functions exits FFT exits FFT TOI measurement Windows Key Access FFT OFF B l B exits the FFT mode and menus returning the analyzer to normal operation Key ccess MEAS USER E RNAP LLU e aaa aaa na aaa 4 54 Quick Reference Softkey Descripttons Cable TV Analyzer Functions FFT STOP FREQ allows the user to enter the stop frequency for the desired S FFT span This sets the analyzer sweep time by the relationship FFT stop freq 400 sweep time x 2 NOTE When using the FFT step frequency function t
180. ys include GATING YES NO and PAUSE YES NO The SYS BTS TST CH softkey is used to specify the channel you wish to use for testing beats These settings are stored in nonvolatile analyzer memory This means that the analyzer retains the selections even when power is turned off until a new selection is made Press CABLE TV ANALYZER to access Setup Key Access CABLE TV ANALYZER changes the sweep control to single sweep if the analyzer is in the continuous sweep mode It executes a sweep after the trigger condition is met Quick Reference i 4 109 Softkey Descriptions Cable TV Analyzer Functions SHOW OPTIONS displays the number and description of the options installed dudo in your analyzer the instrument model number of the analyzer the last five digits of the analyzer serial number and the firmware revision Key Access sou ID activates an FFT marker that must be put on a signal to B l verify that it is not being displayed at the wrong frequency due to aliasing Key Access SINGLE FFT initializes the fast Fourier transform FFT function Key Access MEAS USER 4 110 Quick Reference SINGLE MEAS SLOPE SOUND ON OFF or SPAN Softkey Descriptions Cabie TV Analyzer Functions sets the functions in the Power Menu so that they make the measurement on a single sweep Key Access MEAS USER draws a straight line between the coordinate point of the current segment
181. yzer Functions SPECTRUM 4 92 allows the analyzer mode only to be preset Table 4 7 lists the conditions affected by the PRESET function Other operating modes will not be affected See the description of the key In addition pressing PRESET SPECTRUM erases user generated graphics and blanks the active function block that is on the analyzer screen Pressing PRESET SPECTRUM disposes of ONEOS ONSWP and TRMATH These are remote programming commands see the HP 5590 E Series and L Series Spectrum Analyzers and HP 8591C Cable TV Analyzer Programmer s Guide for more information Key Access or PRESET Table 4 7 Preset Conditions for All Models B A Analag display mode Annotation and graticule off off on coupled Refer to Table 4 5 10 of span all set to AUTO Attenuation Center frequency Center frequency step size Coupled functions Detector Display line Frequency offset Limitine testing Scale positive peak off 0 Hz log 10 dB div off 2 kHz lauto coupled eff SA 1 analyzer Marker counter Marker counter resolution Markers Measure On end of sweep command IONEOSI On sweep command ONSWP cleared cleared A AAA AA 4AA AA 4 AAA 4AAA A A A A A A L A Quick Reference Prev Menu PREV PAGE Softkey Description Cable

HP 8591C User's Manual

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