HP 8591C - Manual

I Assistance Product maintenance agreements and other assistance agreements are available for products. any assistance, contact nearest Hewlett-Packard Sales and Service vi

Safety Notes The following safety notes are used throughout this manual. Familiarizeyourself with each of the notes and its meaning before operating this instrument. C A U T I O N The caution sign denotes a hazard. It calls attention to a procedure that, if not correctly performed or adhered to, cou...

W A R N I N G W A R N I N G C A U T I O N W A R N I N G W A R N I N G , If this instrument is used in a manner not specified by Hewlett-Packard Co., the protection provided by the instrument may be impaired. General Safety Considerations Before this instrument is switched on, make sure it has been p...

2. Getting Started 3. Using Spectrum Analyzer Features 2-2 2-3 2-32-7 2-102-10 2-102-112-112-122-132-162-172-20 2-21 2-21 2-24 2-262-272-28 2-31 3-23-33-4 3-63-83-8 3-103-11 3-12 3-133-133-15

C o n t e n t s 4-9. Viewing an Unstable Signal Using Max Hold A . . . . . . . 4-10. Viewing an Unstable Signal With Max Hold, Clear Write, and Min Hold . . . . . . . . . . . . . . . . . . . . . . 11. Placing a Marker on the CAL OUT Signal . . . . . . . . . 4-12. Using the Marker Delta Function . . ...

C o n t e n t s 5-19. Test Setup for Time-Gated Spectrum Analyzer Capability . . 5-20. Setting the Center Frequency, Span, and Reference Level5-21. Setting the Sweep Time . . . . . . . . . . . . . . . . . 5-22. Setting the Gate Delay and Gate Length Using an Oscilloscope5-23. Using Time-Gating to Vi...

Preparing For Use This chapter describes the process of getting the cable TV analyzer ready to use when you have just received it. See “Preparing Your Analyzer ForUse” for the process steps. The process includes initial inspection, setting up the unit for the selected ac power source, and performing...

I Detailed information for all of the steps in this process is included in thischapter immediately following the process description. 1. Unpack the cable TV analyzer from the shipping container and inspect it for damage during shipping. 2. Verify that all of the accessories and documentation has bee...

Inspect the shipping container for damage. If the shipping containeror cushioning material is damaged, keep it until you have verified that the contents are complete and you have tested the cable TV analyzermechanically and electrically. l-l contains the accessories shipped with the cable TV analyze...

I The cable TV analyzer is a portable instrument and requires no physical installation other than connection to a power source. C A U T I O N Do not connect ac power until you have verified that the line voltage is correct, the proper fuse is installed, and the line voltage selector switch isproperl...

Preparing For Use P o w e r R e q u i r e m e n t s Figure Setting the line Voltage Selector Switch C A U T I O N Before connecting the cable TV analyzer to the power source, you must setthe rear-panel voltage selector switch correctly to adapt the cable TV analyzerto the power source. An improper s...

Preparing For Use P o w e r R e q u i r e m e n t s Figure 1-3. Checking the Line Fuse The recommended fuse is size 5 by 20 mm, rated 250 V (IEC approved). This fuse may be used with input line voltages of 115 V or 230 V. Its HP part number is 2110-0709. With an input line voltage of 115 V an altern...

Preparing For Use P o w e r R e q u i r e m e n t s The cable TV analyzer is equipped with a three-wire power cable, in accordance with international safety standards. When connected to anappropriate power line outlet, this cable grounds the instrument cabinet. W A R N I N G Failure to ground the ca...

Preparing For Use Turning on the Analyzer for the First Time N O T E 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 thefirmware date readily available. ...

I Preparing For Use Turning on the Analyzer for the First Time 7. 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 generatingcorrection fac...

You may wish to obtain a permanent record of data displayed on the cableTV analyzer screen. This can be done using the (copy) key of the cable TVanalyzer, and a printer or plotter. Equipment l HP cable TV analyzer. l HP cable l Printer with interface, choose one of the following: q HP 500, and DeskJ...

Preparing For Use Printing or Plotting 1. Turn off the cable TV analyzer and the printer. N O T E The interface allows only one device (either the printer or the plotter) to be connected to the cable TV analyzer. Refer to the programmer’s guide for more information on protocol and cable wiring. 2. C...

Preparing For Use Printing or Plotting 7. Select the configuration for your printer by pressing the appropriate key. Note that the is activated when the key title is underlined. S e t P r i n t e r Press this key to print in color if the cable TVanalyzer is connected to a Hewlett-Packard colorprinte...

Preparing For Use Printing or Plotting To set the baud rate to 9600 baud, press: BAUD RATE , 9600, (Hz). N O T E The HP plotter does not support two plots per page. If you use an HP plotter with an HP cable TV analyzer, you can select one plot per page or four plots per page, but not two plots per p...

Preparing For Use Printing or Plotting Note that for a multi-pen plotter, the pens of the plotter draw the different components of the screen as follows: Description D r a w s t h e a n n o t a t i o n a n d g r a t i c u l a . Draws trace A. Draws trace D r a w s t r a c e C a n d t h e d i s p l a...

Preparing For Use Printing or Plotting N O T E Because HP-IB cables can be connected together, more than one instrument can communicate on the HP-IB. This means that both a printer and a plotter can be connected to the cable TV analyzer fusing two cables). Each device must have its own address. Disc...

Preparing For Use Printing or Plotting label. The upper and lower sections of the label graphically represent where the plotter output will be located. Note that for a multi-pen plotter, the pens of the plotter draw the differentcomponents of the screen as follows: Pen Description Number 1 Draws the...

Getting Started This chapter introduces the basic functions of the HP cable TV analyzer. In this chapter you will: l Get acquainted with the front-panel and rear-panel features. l Get acquainted with the menus and softkeys. l Learn about screen annotation. l Make a basic measurement (the calibration...

Figure 2-1. Front-Panel Feature Overview The following section provides a brief description of front-panel features. Refer to Figure 1 Active function block is the space on the screen that indicates the active function. Most functions appearing in this block can be changed using the knob, step keys,...

Getting Started Getting Acquainted with the Analyzer Message block is the space on the screen where UNCAL and the asterisk appear. If one or more functions are manually set (uncoupled), and the amplitude or frequency becomes uncalibrated, UNCAL appears. (Use COUPLE ) and AUTO ALL to recouple functio...

Getting Started Getting Acquainted with the Analyzer C A U T I O N If the tracking generator output power is too high, it may damage the deviceunder test. Do not exceed the maximum power that the device under test can tolerate. 18 RF OUT 75 supplies a source output for the built-in trackinggenerator...

Getting Started G e t t i n g A c q u a i n t e d w i t h t h e A n a l y z e r Figure 2-2. Rear-Panel Feature Overview 1 EXT ALC INPUT allows the use of an external detector or power meter for automatic leveling control of the tracking generator. Option 011 only. 2 TV TRIG OUTPUT (TTL) provides TV ...

Getting Started Getting Acquainted with the Analyzer 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...

I Getting Started Getting Acquainted with the Analyzer N O T E When using the knob to change frequency or amplitude settings, the trace data is shifted. Therefore,when using MAX HOLD A, MAX HOLD B , or MIN HOLD , moving the center frequency with the knob will not simulate a drifting signal. Number/U...

I Fine-Focus Control Getting Started Getting Acquainted with the Analyzer 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 for a comfortable viewing intensity. 2. Use an a...

G e t t i n g S t a r t e d S c r e e n A n n o t a t i o n trigger mode. The second letter (“S”) indicates the cable TV analyzer is insingle-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...

Getting Started M a k i n g a M e a s u r e m e n t When the peak of a signal does not appear on the screen, it may be necessary to adjust the amplitude level on the screen. Press REF LEVEL 48.8 appears in the active function block. The REF LVL label appears in inverse video to indicate that referen...

Getting Started Improving Accuracy with Self-Calibration Routines The CAL FREQ starts the frequency self-calibration routine. This routine adjusts the frequency, sweep time, and span accuracy inapproximately 2 minutes. The CAL AMPTD starts the amplitude calibration routine. This routine takes approx...

Getting Started Improving Accuracy with Self-Calibration Routines 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 beforeattempting to make any calibrated measurements. Be sure to calibrate the cable TV analyz...

Getting Started Improving Accuracy with Self-Calibration Routines 2. Press the following cable TV analyzer keys: More 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 TVanalyzer input. 3. To save this calibration...

Getting Started Memory Card Insertion and Battery Replacement 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 2016or HP part number N O T E The minimum lifetime of the battery (under ordinary conditions) is...

Getting Started Memory Card Insertion and Battery Replacement Figure 2-8. Memory Card Battery Date Code location Procedure to Change the The battery is located beside the card’s write-protect switch on the end Memory Card Battery opposite the connector. C A U T I O N The battery power enables the me...

Using Spectrum Analyzer Features This chapter introduces the spectrum analyzer features of the HP cable TV analyzer. These features can be used to manipulate measurement dataand to make measurements more easily. In this chapter you will: l Use the internal preamplifier. l Use the marker table to lis...

Using Spectrum Analyzer Features Use the Marker Table to List All the Active Markers Example: Use the marker table to measure the calibrator signal. 1. Connect the CAL OUT signal to the cable TV analyzer’s INPUT 75 0. Press Press ( PEAK SEARCH ) and NEXT PK RIGHT to place the marker 1 on the 300 MHz...

Using Spectrum Analyzer Features Use the Peak Table to List the Displayed Signals Example: Use the peak table function to measure the calibrator signal and its harmonics. 1. Connect the CAL OUT signal to the cable TV analyzer’s INPUT 75 and press Press [ PEAK SEARCH ), More 1 of 2 and PK TABLE ON OF...

Using Spectrum Analyzer Features Saving and Recalling Data from Analyzer Memory 1. Press If CARD is underlined, press INTERNAL CARD to select INTERNAL. 2. Press INTERNAL STATE 3. Enter the register number under which the state was saved and the state is recalled automatically. State data can also be...

Using Spectrum Analyzer Features Saving and Recalling Data from Analyzer Memory 1. 2. 3. 4. 5. Press If CARD is underlined, press INTERNAL CARD to select INTERNAL. Press Internal Trace . This accesses a menu displaying TRACE A , TRACE B , TRACE C , LIMIT LINES, and AMP CDR. Press TRACE A , TRACE B ,...

Using Spectrum Analyzer Features S a v i n g a n d R e c a l l i n g D a t a f r o m t h e M e m o r y C a r d N O T E improper insertion causes error messages to occur, but generally does not damage the card orinstrument. Care must be taken, however, not to force the card into place. The cards are ...

Using Spectrum Analyzer Features Saving and Recalling Data from the Memory Card 4. If this is a new memory card, it must be formatted before use. Since formatting a card deletes any data stored on the memory card, catalog thecard before using the format card function if you suspect the memory card m...

Using Spectrum Analyzer Features Saving and Recalling Data from the Memory Card Use Change Prefix to enter the prefix, or use the existing prefix. 2. Press (SAVE) or (RECALL). If INTERNAL is underlined, press INTERNAL CARD to select CARD. Press Catalog Card then CATALOG ALL Use the knob to highlight...

Using Spectrum Analyzer Features Saving and Recalling Data from the Memory Card 1. Use Change Prefix to enter the prefix, or use the existing prefix. press If INTERNAL is underlined, press INTERNAL CARD to select CARD. 3. Press Card Trace to access the menu with LIMIT LINES and AMP COR. Press either...

Using Spectrum Analyzer Features Saving and Recalling Data from the Memory Card Programs (also called downloadable programs or can be loaded into cable TV analyzer memory either by loading a program from a memory card or by defining a function with programming commands. The process of saving and rec...

I U s i n g S p e c t r u m A n a l y z e r F e a t u r e s Saving and Recalling Data from the Memory Card Table 3-3. Save and Recall Functions Using Memory Card Operation Screen Title File Name Register Range Key Sequence I save state Available? N o slcurrent P r e f i x + S T A T E C A R D r e g i...

Limit lines provide an easy way to compare trace data to a set of amplitudeand frequency parameters while the cable TV analyzer is sweeping the measurement range. An upper and/or lower limit line can be displayed. Every measurement sweep of trace A is compared to the limit lines. If trace A is at or...

Using Spectrum Analyzer Features U s i n g l i m i t - l i n e F u n c t i o n s This procedure demonstrates how to create a sample upper limit line for the CAL OUT signal and activate testing. Detailed descriptions of the limit-line functions follow this procedure. 1. Press 2. Set the center freque...

Using Spectrum Analyzer Features U s i n g l i m i t - l i n e F u n c t i o n s N O T E To clear an existing limit-line table, press More 1 of 2 Then press PURGE LIMITS two times. After pressing PURGE LIMITS the first time, the message If you are sure, press key again to purge data will appear. Pre...

Using Spectrum Analyzer Features U s i n g l i m i t - l i n e F u n c t i o n s N O T E The coordinates for the second point must be entered before the first and limit-line segment is displayed. 9. Enter the second limit-line segment by pressing the following keys: 250 (MHz) 11 SLOPE N O T E Table ...

Using Spectrum Analyzer Features U s i n g l i m i t - l i n e F u n c t i o n s JUL 1993 REF 48.8 AT PEAKLOG WA s SC F COR SEG FIXED TYPE 600.000000 MHz I.........; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PRINTER SETUP Previous Menu CENTER SPAN 588.0 RES 3.8 MHz VBW MHz 20.8...

Using Spectrum Analyzer Features U s i n g l i m i t - l i n e F u n c t i o n s Selecting the Type of Limit-Line Table The LIMITS FRQ TIME key selects the type of limit line parameters. Parameters can be entered as frequency/amplitude coordinates, or astime/amplitude coordinates. Use the LIMITS FRQ...

Using Spectrum Analyzer Features U s i n g l i m i t - l i n e F u n c t i o n s Selecting the Limit-Line Table Format Press Edit Upper , Edit Lower , Edit Up/Low, or Edit to edit or create a limit-line table. Each of the edit represents a different type of limit-line table format. The choice of edi...

Using Spectrum Analyzer Features U s i n g l i m i t - l i n e F u n c t i o n s l The upper and lower limit-line table format is accessed by Edit Up/Low With the upper and lower limit-line table format, the upper and lower limit-line coordinates can be entered at the same time: the frequency (or ti...

I Using Spectrum Analyzer Features U s i n g l i m i t - l i n e F u n c t i o n s Selecting the Segment Number Pressing SELECT SEGMENT specifies the segment number to be entered or edited. Limit lines are created by entering frequency or time values andamplitude values into a limit-line table. The ...

Using Spectrum Analyzer Features Using Limit-Line Functions l With the lower limit-line table format, one amplitude component (representing a lower limit-line segment) is specified per frequency/time component. The amplitude value is entered by pressing SELECT , entering an amplitude value, and pres...

Using Spectrum Analyzer Features U s i n g l i m i t - l i n e F u n c t i o n s Selecting the Segment Press SEGMENT TYPE , then FLAT, SLOPE, or POINT to specify the segmenttype. The segment type determines how to connect the coordinate point ofthe current line segment with the coordinate point of t...

Using Spectrum Analyzer Features Using Functions Completing Table Entry Pressing EDIT DONE blanks the limit-line table from the screen and accesses and Activating Limit-Line Testing the menu with LMT TEST ON OFF and LMT DISP Y N AUTO softkeys. Pressing LMT TEST ON OFF turns the limit-line testing on...

U s i n g S p e c t r u m A n a l y z e r F e a t u r e s U s i n g l i m i t - l i n e F u n c t i o n s 9. Specify the first limit-line segment by using the following key sequence: More 2 of 2 SELECT 275 (MHz) 520 FLAT 10. Repeat the above step for the values listed in the following table to compl...

I I Using Spectrum Analyzer Features learn About the Analog+ Display Mode JUL 29, 1993 REF 48.8 AT LINE ON Lines More 2 START 0 Hz STOP 1.500 RES 3.0 MHz I 30.0 T Figure 3-9. Analog+ Display Mode Example: Use the analog+ display mode to look at the calibrator signal. 1. Connect the CAL OUT signal to...

Using Spectrum Analyzer Features learn About the Windows Display Example: Use the windows display format to view the calibrator signal 1. Connect the CAL OUT signal to the cable TV analyzer’s INPUT 75 Press (PRESET), START FREQ 0 STOP FREQ 2 2. Turn on the windows display by pressing the WINDOWS ION...

Using Spectrum Analyzer Features learn About the Windows Display 6. Press WINDOWS Now a full-sized display of the lower window will be displayed. Notice the increase in the displayed annotation. 7. Pressing WINDOWS [NEXT) activates the upper window. A full- sized display of it will be shown, and the...

This section provides an overview of amplitude correction, a procedure for creating amplitude-correction data, and descriptions of the amplitude-correction functions. Refer to “Key Descriptions” in Chapter 6 for more information on a specific amplitude-correction function. Amplitude corrections prov...

Using Spectrum Analyzer Features learn How to Enter Amplitude Correction Factors This procedure demonstrates how to create and activate amplitude-correction data. Detailed descriptions of the amplitude-correction functions follow this procedure. 1. Press N O T E A signal is not used in this procedur...

Using Spectrum Analyzer Features learn How to Enter Amplitude Correction Factors N O T E After pressing PURGE AMP COR the first time, the message If you are sure, press key again to purge data will appear. Pressing PURGE COR a second time erases the amplitude-correction data. 6. Specify the first am...

Using Spectrum Analyzer Features learn How to Enter Amplitude Correction Factors Selecting the Frequency Coordinate Press SELECT , then enter a frequency value for the point. N O T E Only two entries per frequency are used. If more points with the same frequency are entered, only the first and last ...

I The HP Keyboard is an IBM AT compatible keyboard that can be connected to the external keyboard connector on the rear panel of the cableTV analyzer. The external keyboard allows a convenient way to enter screentitles and remote programming commands directly into the cable TV analyzeror to access t...

Using Spectrum Analyzer Features External Keyboard The external keyboard operation with the cable TV analyzer is similar to its operation with a computer except for the following: SCROLL LOCK and NUM LOCK are fixed and cannot be changed. Pressing displays the keyboard mode on the cable TV analyzer s...

Using Spectrum Analyzer Features External Keyboard The following three example procedures demonstrate how to use an external keyboard to enter a screen title, programming commands, and a prefix.However, a brief procedure on installing your external keyboard is described first. More detailed informat...

Using Spectrum Analyzer Features External Keyboard To Enter Programming Commands Refer to the HP 8590 E-Series and L-Series Analyzers and HP 8591 C Cable TV Analyzer Programmer’s Guide for more information. 1. Press on the external keyboard to enter the mode for executing remote commands. 2. Type in...

Making Basic Measurements Using Spectrum Analyzer Mode Resolving Signals of Equal Amplitude Using the Resolution Bandwidth Function Example: Resolve two signals of equal amplitude with a frequency separationof 100 I I C O U P L E R Figure 4-1. Set-Up for Obtaining Two Signals 1. To obtain two signal...

I Making Basic Measurements Using Spectrum Analyzer Mode Resolving Signals of Equal Amplitude Using the Resolution Bandwidth Function Figure 4-2. Resolving Signals of Equal Amplitude As the resolution bandwidth is decreased, resolution of the individual signals is improved and the sweep time is incr...

Making Basic Measurements Using Spectrum Analyzer Mode Resolving Small Signals Hidden by large Signals Using the Resolution Bandwidth Function 4. Set the 300 MHz signal to the reference level by pressing ( PEAK SEARCH _), then MARKER LVL . If a 10 filter with a typical shape factor of 15: 1 is used,...

Using the spectrum analyzer’s marker track function, you can quickly decrease the span while keeping the signal at center frequency. Example: Examine a carrier signal in a 200 span 1. Press tune to a carrier signal, and place a marker at the peak. (If you are using the CAL OUT signal, place the mark...

Making Basic Measurements Using Spectrum Analyzer Mode Decreasing the Frequency Span Using the Marker Track Function Figure 4-7. After Zooming In on the Signal 4 - 1 2

I Making Basic Measurements Using Spectrum Analyzer Mode Tracking Unstable Signals Using Marker Track and the Maximum Hold and Minimum Hold Functions Example: Use the marker track function to keep a drifting signal at the center of the display and monitor its change. This example requires a modulate...

I Making Basic Measurements Using Spectrum Analyzer Mode Tracking Unstable Signals Using Marker Track and the Maximum Hold and Minimum Hold Functions 5. The signal frequency drift can be read from the screen if both the marker track and marker delta functions are active. Press MARKER , MK ON OFF th ...

I I Making Basic Measurements Using Spectrum Analyzer Mode Tracking Unstable Signals Using Marker Track and the Maximum Hold and Minimum Hold Functions Example: Using the maximumhold and minimum hold functions, monitor the envelopes of a signal. 1. Connect an antenna to the spectrum analyzer input. ...

Making Basic Measurements Using Spectrum Analyzer Mode Tracking Unstable Signals Using Marker Track and the Maximum Hold and Minimum Hold Functions Press (TRACE_), TRACE A C to select trace B. (Trace B is selected when B is underlined.) Press CLEAR WRITE to place trace B in clear-writemode, which di...

I Making Basic Measurements Using Spectrum Analyzer Mode Comparing Signals Using Delta Markers 3. Press MARKER A to activate a second marker at the position of the first marker. Move the second marker to another signal peak using the PK RIGHT or NEXT PK LEFT or the knob. 4. The amplitude and frequen...

Making Basic Measurements Using Spectrum Analyzer Mode Comparing Signals Using Delta Markers N O T E Changing the reference level changes the marker delta amplitude readout. The annotation in the upper-right corner of the screen indicates theamplitude and frequency difference between the two markers...

Spectrum analyzer sensitivity is the ability to measure low-level signals. It is limited by the noise generated inside the spectrum analyzer. The spectrum analyzer input attenuator and bandwidth settings affect the sensitivity bychanging the signal-to-noise ratio. The attenuator affects the level of...

Making Basic Measurements Using Spectrum Analyzer Mode Measuring low-level Signals Using Attenuation, Video Bandwidth, and Video Averaging N O T E The total power of all input signals at the spectrum analyzer input must not exceed the maximum power level for the spectrum analyzer. 1. Connect an ante...

I Making Basic Measurements Using Spectrum Analyzer Mode Measuring low-level Signals Using Attenuation, Video Bandwidth, and Video Averaging Example: The resolution bandwidth can be decreased to view low-level signals. 1. As in the previous example, connect an antenna to the spectrum analyzer input....

Making Basic Measurements Using Spectrum Analyzer Mode Measuring low-level Signals Using Attenuation, Video Bandwidth, and Video Averaging N O T E The video bandwidth must be set wider than the resolution bandwidth when measuring impulse noise levels. 33 100.15 MHZ 48.8 AT IO -2 1 VIDEO I I I I Figu...

Making Basic Measurements Using Spectrum Analyzer Mode Measuring low-level Signals Using Attenuation, Video Bandwidth, and Video Averaging Example: If a signal level is very close to the noise floor, video averaging is another way to make the signal more visible. N O T E The time required to constru...

Making Basic Measurements Using Spectrum Analyzer Mode Measuring low-level Signals Using Attenuation, Video Bandwidth, and Video Averaging 3. To set the number of samples, use the number/units keypad. For example, press VID AVG OFF (so that ON is underlined), 25 (Hz). Turn video averaging off and on...

Making Basic Measurements Using Spectrum Analyzer Made Identifying Distortion Products Using the RF Attenuator and Traces Example: Using a signal from a signal generator, determine whether the harmonic distortion products are generated by the spectrum analyzer. 1. Connect a signal generator to the s...

Making Basic Measurements Using Spectrum Analyzer Mode Identifying Distortion Products Using the RF Attenuator and Traces Figure 4-21. RF Attenuation of 10 6. Compare the response in trace A to the response in trace B. If the distortion product decreases as the attenuation increases, distortionprodu...

I Making Basic Measurements Using Spectrum Analyzer Mode Identifying Distortion Products Using the RF Attenuator and Traces If the responses in trace A and trace B differ, as in Figure 4-2 then attenuation is required. If there is no change in the signal level, the distortion is not caused internall...

Making Basic Measurements Using Spectrum Analyzer Mode Identifying Distortion Products Using the RF Attenuator and Traces 2. Set one source to 300 MHz and the other source to 301 MHz for a frequency separation of 1 MHz. Set the sources equal in amplitude (in thisexample, the sources are set to 44 3....

Making Basic Measurements Using Spectrum Analyzer Mode Identifying Distortion Products Using the RF Attenuator and Traces Figure 4-24. Measuring the Distortion Product 4 - 3 6

Making Basic Measurements Using Spectrum Analyzer Mode Using the Analyzer As a Receiver in Zero Frequency Span Example: View the modulation waveform of an AM signal in the time domain. 1. To obtain an AM signal, you can either connect an antenna to the spectrum analyzer input and tune to a commercia...

I Making Measurements Using Spectrum Analyzer Mode Measuring Amplitude Modulation with the Fast Fourier Transform Function Figure 5-1. Annotation Some of the screen annotation is altered when the FFT function is active. The left edge of the graticule is relabeled FFT START and represents 0 Hz relati...

Making Measurements Using Spectrum Analyzer Mode Measuring Amplitude Modulation with the Fast Fourier Transform Function 9. Press FFT Menu , and CONTINUS FFT The spectrum analyzer will now be taking continuously, updating the measurement at the end of every sweep. Press FFT STOP , 250 Hz. This sets ...

Making Measurements Using Spectrum Mode Measuring Amplitude Modulation with the Fast Fourier Transform Function Press VID BW AUTO MAN (MAN) and use the step keys to decrease the video bandwidth until the amplitude of the measured signal drops. Then step the bandwidth up until the signal amplitude st...

Making Measurements Using Spectrum Analyzer Mode Measuring Amplitude Modulation with the Fast Fourier Transform Function I Figure 5-2. Percent Amplitude Modulation Measurement Example 2: Use the automatic FFT measurement to look at 60 Hz AM modulation. 1. Connect a signal generator to the spectrum a...

N O T E This application should only be performed using an HP cable TV analyzer equipped with Option 011. Stimulus-response measurements require a source to stimulate a device under test (DUT), a receiver to analyze the frequency-response characteristicsof the DUT, and, for return-loss measurements,...

Making Measurements Using Spectrum Analyzer Mode S t i m u l u s - R e s p o n s e M e a s u r e m e n t s Figure Block Diagram of a Spectrum-Analyzer/Tracking-Generator Measurement System 5 - 1 3

Making Measurements Using Spectrum Analyzer Mode S t i m u l u s - R e s p o n s e M e a s u r e m e n t s The procedure below describes how to use the built-in tracking generatorsystem of the HP cable TV analyzer equipped with Option 011 to measure the rejection of a low-pass filter which is a type...

Making Measurements Using Spectrum Analyzer Mode S t i m u l u s - R e s p o n s e M e a s u r e m e n t s There are four basic steps in performing a stimulus-response measurement,whether it be a transmission or reflection measurement: set up the spectrumanalyzer settings, calibrate, normalize, and ...

I Making Measurements Using Spectrum Analyzer Mode S t i m u l u s - R e s p o n s e M e a s u r e m e n t s N O T E To reduce ripples caused by source return loss, use IO or greater tracking generator outputattenuation. Tracking generator output attenuation is normally a function of the source powe...

Making Measurements Using Spectrum Analyzer Mode S t i m u l u s - R e s p o n s e M e a s u r e m e n t s 4. Put the sweep time of the analyzer into stimulus-response auto-coupled mode by pressing More of 2 , then SWP CPLG SA until SR (stimulus-response mode) is underlined. Auto-coupled sweep times...

Making Measurements Using Spectrum Analyzer Mode S t i m u l u s - R e s p o n s e M e a s u r e m e n t s 5. Since we are only interested in the rejection of the low-pass tune the spectrum analyzer’s center frequency so that the roll-off of the filtercomprises the majority of the trace on the displ...

I I Making Measurements Using Spectrum Analyzer Mode S t i m u l u s - R e s p o n s e M e a s u r e m e n t s Adjusting the resolution bandwidth may result in a decrease in amplitude of the signal. This is known as a tracking error. Tracking errors occurwhen the tracking generator’s output frequenc...

Making Measurements Using Spectrum Analyzer Mode S t i m u l u s - R e s p o n s e M e a s u r e m e n t s Figure 5-9. Normalized Trace 9. To measure the rejection of the filter at a given frequency, press and enter the frequency. For example, enter 350 MHz. The marker readout displays the rejection...

Making Measurements Using Spectrum Analyzer Mode Demodulating and listening to an AM or FM Signal Figure Demodulation of an FM Signal Example: The signal can be continuously demodulated if the spectrumanalyzer is in zero span. 1. Place the marker on a signal of interest as in steps 1 through 3 of th...

You can trigger on a TV picture carrier signal. This example enables you to view a test signal transmitted during vertical retrace when the TV screen is blanked. 1. Press 2. Set the frequency of a picture carrier signal to center frequency. Press (TRIG) and TV TRIG If the spectrum analyzer is in a s...

Making Measurements Using Spectrum Analyzer Mode Triggering on a Selected line of a Video Picture Field Press TV TRIG EVEN FLD to trigger on an even field of a video format. Figure 5-14. Triggering on an Even Field of a Video Format The default video format is NTSC. Press TV Standard, then PAL-M, PA...

I Making Measurements Using Spectrum Analyzer Mode Using the Gate Utility to Simplify Time-Gated Measurements (Option 107 Example: Measure a Pulsed RF signal 1. The rear panel GATE OUTPUT must be connected to EXT TRIG INPUT. 2. A TTL trigger signal must be connected to GATE TRIGGER INPUT on the rear...

I Making Measurements Using Spectrum Analyzer Mode Using the Gate Utility to Simplify Time-Gated Measurements (Option 107 only) The gate utility can optimize the setting of resolution bandwidth if theuser enters the value of the pulse width and turns on the coupling. Thevideo bandwidth will be optim...

Note that Option 107 is required to perform this application. The measurement procedures in this section explain how to use the time gate capability without the convenience of the Gate Utility. The Gate Utilityprovides the user with simultaneous displays of the frequency and time domain to assist in...

M a k i n g M e a s u r e m e n t s U s i n g S p e c t r u m A n a l y z e r M o d e Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 only) Figure 5-17. Viewing Time-Sharing of a Frequency with a Spectrum Analyzer Description of Items in Figure 5-17 1 T r a c e...

Making Measurements Using Spectrum Analyzer Mode Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 only) This example demonstrates how to use time-gated spectrum analyzercapability to view two different pulsed RF signals. The signals are at the same frequency, bu...

I M a k i n g M e a s u r e m e n t s U s i n g S p e c t r u m A n a l y z e r M a d e Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 only) Use the guidelines in when using time-gated spectrum analyzer capability to view a pulsed RF signal. These are only gui...

I Making Measurements Using Spectrum Analyzer Mode Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 only) The measurement procedures in this section explain how to use the time gate capability without the convenience of the Gate Utility functions. The Gate Utili...

Making Measurements Using Spectrum Analyzer Mode Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 1. Set the center frequency of the spectrum analyzer to the frequency of the modulated signal. Decrease the frequency span of the spectrum analyzer. If necessary, a...

Making Measurements Using Spectrum Analyzer Mode Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 only) 2. Set the sweep time to be 401 times greater than the pulse repetition interval. For this example, the pulse repetition interval is 280 so the sweep time is ...

I Making Measurements Using Spectrum Analyzer Mode Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 only) Turn the gate on by pressing GATE OFF (so that ON is underlined). Using an oscilloscope makes it easier to ensure that the gate occurs during the pulsed RF ...

M a k i n g M e a s u r e m e n t s U s i n g S p e c t r u m A n a l y z e r M o d e Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 I Item of Items in 1 O u t p u t f r o m p u l s e g e n e r a t o r 1 . 2 O u t p u t f r o m p u l s e g e n e r a t o r 2 . ...

M a k i n g M e a s u r e m e n t s U s i n g S p e c t r u m A n a l y z e r M o d e Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 only) Figure Placing the Gate Output During the Second Signal Item Description of Items in Figure 5-24 1 O u t p u t f r o m p ...

Making Measurements Using Spectrum Analyzer Mode Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 only) If the gate delay and gate length are not set properly, you may not be viewing an accurate representation of a signal. For example, If the gate does not occur...

I Making Measurements Using Spectrum Analyzer Mode Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 only) LOG S W E E P T I M E 150 P R I N T E R PRINTER PRINTER PRINTER SETUP PREU MENU CENTER MHz SPAN 20.00 MHz BW MICE Figure 5-27. Gate is Occurring at the Begi...

Making Measurements Using Spectrum Analyzer Mode Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 To use 5-4 and Table 5-5: l Determine the pulse width of the signal you want to measure, then use 5-4 to determine the gate delay, resolution bandwidth, gate length...

I Making Measurements Using Spectrum Analyzer Mode Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 only) The spectrum analyzer’s self-calibration routines (initiated by pressing CAL AMPTD or CAL AMPTD ) should be performed prior to using the time-gated spectrum...

Making Measurements Using Spectrum Analyzer Mode Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 only) Press [CAL), More of 4 , M o r e 2 o f 4 , S e r v i c e D i a g , DISPLAY CAL DATA , then PAGE. 6. Verify that the number displayed for GATE, in the lower le...

Making Measurements Using Spectrum Analyzer Mode Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 Press Menu, GATE OFF (so that ON is underlined). See Figure N O T E This procedure offers a qualitative functional check only Due to several factors, the accuracy o...

Making Measurements Using Spectrum Analyzer Mode Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 only) 4. To check the gate control function, press Gate Control , GATE CTL EDGE LVL so that LVL (level) is underlined. (See Figure 5-31.) I I I I Figure 5-31. Using...

Making Measurements Using Spectrum Analyzer Mode N B a n d w i d t h M e a s u r e m e n t Example: Measure the 6 bandwidth of the spectrum analyzer’s internal 9 bandwidth. 1. On the spectrum analyzer, press ( PEAK MK TRACK ON OFF (ON), and enter 200 Select the 9 bandwidth by pressing BW Menu , and ...

Making Measurements Using Spectrum Analyzer Mode P e r c e n t A m p l i t u d e M o d u l a t i o n M e a s u r e m e n t Example: Use the % AM function to make a measurement. 1. Press Connect a signal with amplitude modulation, to the spectrum analyzer’s INPUT 75 2. Press [ F R E Q U E N C Y ) and...

Use the one-button measurement to make quick and easy inter-modulation measurements of microwave spectrum analyzers, mixers or converters. When the measurement is turned on there must be four signals on the display, two test signals and their two associated distortion products. All of the signals mu...

Making Measurements Using Spectrum Analyzer Mode T h i r d O r d e r I n t e r m o d u l a t i o n M e a s u r e m e n t F i g u r e 5 - 3 4 . T h i r d - O r d e r I n t e r m o d u l a t i o n M e a s u r e m e n t Example: Use the function to make a measurement. 1. Press Connect two equal amplitu...

Making Measurements Using Spectrum Analyzer Mode U s i n g t h e P o w e r M e a s u r e m e n t F u n c t i o n s t o m a k e T r a n s m i t t e r M e a s u r e m e n t s Figure 5-35. Occupied Bandwidth 6. If you want to change the percent power value press the OCC BW POWER key and use the knob or...

Making Measurements Using Spectrum Analyzer Mode Using the Power Measurement Functions to make Transmitter Measurements The leakage of a transmitter into adjacent channels can be measured quicklyand easily. Enter the channel spacing and channel bandwidth, and activate the adjacent channel power meas...

Making Measurements Using Spectrum Analyzer Mode Using the Power Measurement Functions to make Transmitter Measurements Figure 5-37. Adjacent Channel Power Extended 10. A graph of the adjacent channel power ratio as a function of channel spacing can be calculated and displayed by pressing ACPGRAPH O...

I Making Measurements Using Spectrum Analyzer Mode Using the Power Measurement Functions to make Transmitter Measurements To enable the graph marker, press MKR ON OFF so (ON) is underlined. Delta frequency, delta amplitude, and absolute amplitudevalues are displayed for the marker position. The mark...

Making Measurements Using Spectrum Analyzer Made Using the Power Measurement Functions to make Transmitter Measurements The channel power function measures the total power in the selected channel bandwidth. The signal can be noise, tones, or a combination of noise and tones. The channel power functi...

Making Measurements Using Spectrum Analyzer Mode Using the Power Measurement Functions to make Transmitter Measurements Press Previous Menu to return to the main power menu. Press CHANNEL to activate the function. Figure Channel Power 8. A graph of the channel power as a function of frequency can be...

I Making Measurements Using Spectrum Analyzer Mode Using the Power Measurement Functions to make Transmitter Measurements Figure 5-40. Channel Power Graph To enable the graph marker, press GRPH MKR ON OFF so (ON) is underlined Absolute frequency and amplitude are displayed. Press Menu . Press OFF to...

Spectrum Analyzer Mode Key Descriptions This chapter describes functions and controls of the cable TV analyzer inspectrum analyzer mode. The front-panel keys and functions are listed alphabetically followed by a complete and detailed description. Brief descriptions for service functions have also be...

Spectrum Analyzer Mode Key Descriptions S e r v i c e F u n c t i o n s Service Diag accesses the following diagnostic softkeys: LOCK ON OFF DETECTOR DETECTOR DETECTOR ALC TEST (Option 011 only) ANALYZER GAINS BINARY SPAN COARSE TUNE DAC DACS DISPLAY CAL DATA DROOP FINE TUNE DAC FM COIL DRIVE FM GAI...

Spectrum Analyzer Mode Key Descriptions Service Functions Service Diagnostic FM OFFST Functions FM SPAN DIAG DISC NORM OFF GND DETECTOR MAIN COIL MAIN SPAN STP GAIN RAMP SWEEP TIME DAC X FINE TUNE DAC 6-5

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions REF DETECTOR displays the output of the 2 V reference produced on the Processor/Video assembly as a horizontal line at the top graticule. This is a service diagnostic function and is for service use only. Front-Panel Key Access...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions ALC INT XTAL Option 011 only. activates the automatic leveling control (ALC) function for internal leveling or external (XTAL or MTR) leveling. The external leveling input (located on the rear panel of theanalyzer) can be used ...

S p e c t r u m A n a l y z e r M o d e K e y D e s c r i p t i o n s Spectrum Analyzer Mode Functions Table 6-1. Commands Not Available with Analog+ Operation Command Description A e x c h a n g e s t r a c e A a n d t r a c e A - B A O F F CLEAR WRITE BCLEAR WRITE DEMOD OFF MKR CNT OFF MK PAUSE ON...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions ANALYZERADDRESS Option 021 only. allows you to set the HP-IB address of the analyzer. Theanalyzer address is set to 18 by pressing DEFAULT . Front-Panel Key Access ANALYZERGAINS displays the current value of the gain for variou...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions AUTO input attenuation in 10 increments. The analyzer input attenuator, which is normally coupled (linked) tothe reference level control, reduces the power level of theanalyzer input signal at the input mixer. The attenuator is...

Aux B C B-DL B Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions the menu used to control the auxiliary outputs and input. The auxiliary outputs are controlled by pressing A 1 , CNTL B 0 1 , CNTL C 0 1 , and CNTL 0 1 . The status of the auxiliary input (control line I), can be...

I Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions activates the resolution bandwidth function and accesses the that control the bandwidth functions: BW AUTO MAN , VID BW AUTO MAN , RATIO , VID ON OFF , and the BW Menu (Also see the BW AUTO MAN description.) accesses the menu...

C A T A L O GON EVENT Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions displays the “on event” programming commands and their status. The on event programming commands are as follows: ONEOS ONSWP TRMATH ONMKRONSRQ ONPWRUP Performs command list at end of every sweep. Performs ...

CATALOG Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions catalogs all of the variables saved in analyzer memory. Variables can be saved in analyzer memory by loading in adownloadable program from the memory card or defining afunction using remote programming commands (VARDEF ...

Spectrum Analyzer Made Key Descriptions Spectrum Analyzer Mode Functions Pressing Change Title accesses the menus that contain the available characters and symbols. Aprogramming command can be entered in the screen title area. It can then be executed from the front panel by pressing TITLE The screen...

I Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions CLEARWRITE A erases any data previously stored in trace A andcontinuously displays any signals during the sweep of the analvzer. This function is activated at power on and by Changing the trace mode of trace C to clear write ...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions CONTINUSFFT 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, itputs the analyzer in continuous swe...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions TV Analyzer Programmer’s Guide and Chapter 1 of this manual. If you want the labels to be printed with the analyzer display printout when using press PRT MENU ON OFF so that ON is underlined. Press and the process begin. The sc...

Spectrum Analyzer Mode Key Spectrum Analyzer Mode Functions D e f i n eC o u p l i n g Option 107 accesses the time gate utility menu for coupling analyzersettings to the input pulsed signal parameters. It also accesses the pulsed signal parameter entry menus. Front-Panel Key Access D e f i n e Gate...

DELETE FILE Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions function allows you to delete an item from analyzer memoryor a from the memory card. Use the step keys to view different sections of the directory and use the knob to select the file or item to delete. Pressing DELE...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions EDGE POL POS NEG 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). If the gate utility is used and a pulse r...

I Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions EDITLAST Refer to the HP 8590 E-Series and L-Series Spectrum Analyzers and HP 8591 C Cable TV Analyzer Programmer’s Guide for more information. starts the DLP editor function and allows the most recentitem that was being edit...

I E d i t Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions allows you to view or edit the upper and lower limit-line tables simultaneously. These tables are edited by enteringa middle amplitude value and an amplitude deviation. Upto 20 entries are allowed for the upper and lo...

I Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions E d i t Up/Low allows you to view or edit the upper and lower limit-linetables simultaneously. Up to 20 entries are allowed for the upper and lower limit-line tables. With the upper and lower limit-line table format, the uppe...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions ENTER EDGE accesses the menu used to define the edge of the pulse that will be used as the time reference. Press MARKER ON to activate a trigger marker. The other menu functions can be used to manipulate the marker to indicate ...

ERASEDLP MEM Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions allows you to dispose of the all traces defined by TRDEF, and all VAREF variables that are in analyzer memory. Press Dispose User Mem , then press ERASE DLP MEM which causes the message to appear on the analyzer sc...

I Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions N O T E ERASE MEM ALL ignores the state of the LOCK So, even if STATES and TRACES are locked, they will still be erased by ERASE MEM ALL Front-Panel Key Access ERASE CARD allows you to dispose of any data or programs stored o...

ERASE Spectrum Analyzer Mode Key Descriptions S p e c t r u m A n a l y z e r M o d e F u n c t i o n s allows you to purge all the user state registers 1 through 9. Press Dispose User , then press ERASE which causes the message to appear on the analyzer screen: If you are sure, Press key again to p...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions 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 volts. The external trigger signal must be a 0 V to V...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions FFT OFF exits the FFT mode and menus, returning the analyzer to normal operation. Front-Panel Key Access FFT STOPFREQ allows the user to enter the stop frequency for the desired FFT span. This sets the analyzer sweep time by th...

I OFFSET Spectrum Analyzer Mode Key Spectrum Analyzer Mode Functions allows the user to input a frequency offset value that isadded to the frequency readout, to account for frequencyconversions external to the analyzer. Offset entries are added to all frequency readouts including marker, startfreque...

MARKER A Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode 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...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions MAX HOLD B maintains the maximum level for each trace point of trace B. Updates each trace point if a new maximum level is detected in successive sweeps. Front-Panel Key Access MAX MXR lets you change the maximum input mixer le...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions N o U s e r Menu is displayed if key number 1 has not been defined by theuser. Key number 1 can be by remote programming commands (KEYCMD or KEYDEF). Front-Panel Key Access ON OFF subtracts trace B from trace A and adds the res...

S p e c t r u m A n a l y z e r M o d e K e y Spectrum Analyzer Mode Functions PEAK PK NODE the highest displayed signal and narrows the span to a value selected by the user. Pressing PEAK ZOOM the first time will make FINAL SPAN the active function so the user can input the destination span. The cu...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions provides a convenient starting point for making most measurements. Pressing displays used for accessing the operating modes available for your analyzer.See 1 and 6-10 for the conditions established by pressing The instrument pr...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions PRESET SPECTRUM allows the analyzer mode only to be preset. Table 6-12 lists the conditions affected by the PRESET function. Otheroperating modes will not be affected. See the description ofthe key. In addition, pressing PRESET...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions SAVE AMP saves the current amplitude-correction factors table tothe current mass-storage device ( analyzer memory or memory card). To verify the current mass storage device, press SAVE AMP COR If MAX REG appears on the analyzer...

I Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions SELECT allows you to enter the frequency value for a limit-linesegment or for an amplitude-correction point. Enter thefrequency value for the frequency by using the data keys. Change the frequency value by using the step keys...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions SELECT TIME allows you to enter the time value for a limit-line segment. The time value is with respect to the analyzer sweep time.A time value of zero is the start of the sweep, which is the left edge of the graticule. Enter t...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions SRC PWRON OFF SRC PWRSTP SIZE START STATE CARD Option 011 activates (ON) or deactivates (OFF) the output power ofthe tracking generator (SRC). The power level can then beadjusted using the data keys, step keys, or knob. Pressin...

I Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions STATE INTRNL saves the current analyzer state in the selected state register. To save the current state, press STATE INTRNL , and use the numeric keypad to enter a state register number (valid state register numbers are 1thro...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions SYNCNRM NTSC changes the rear MONITOR output between normal internal monitor horizontal and vertical synchronization constants or the NTSC video compatible format. In the NTSC modethe monitor output is compatible with NTSC vide...

I I Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions ON OFF turns the display of the realtime clock on or off. Pressing DEFAULT sets OFF to ON. Front-Panel Key Access ON OFF finds the third-order intercept of the two highest amplitudesignals and the two associated distortion ...

Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions TRACKING PEAK Option 011 only. activates a routine that automatically adjusts the tracking adjustment to obtain the peak response of the tracking generator on the analyzer display. N O T E For tracking peak to function properly...

Z O N E CENTER Z O N E PK LEFT Spectrum Analyzer Mode Key Descriptions Spectrum Analyzer Mode Functions allows the zone markers to be moved in frequency withoutchanging the zone span. The zone markers are vertical lines marking the zone on the upper window. They correspond with the frequency range d...

Key Menus This chapter contains the key menu diagrams for the HP cable TV analyzer. Each key menu diagram is arranged alphabetically according to thefront-panel key name. N O T E The in the key menus that are specific to the HP cable TV RF/video measurements personality are described in the HP Cable...

Key Menus Spectrum Analyzer Mode Functions F O R R E C A L L I N G A N D T O M E M O R Y C A R D : i s , w i t h C A R D SGL SPAN 7 - 1 5

I Key Menus Spectrum Analyzer Mode Functions ( w i t h T r a c e A s e l e c t e d ) TRACE 7 - 1 6

I If You Have a Problem This chapter includes information on how to check for a problem with your HP cable TV analyzer and how to return it for service. It also includes descriptions of the analyzer built-in error messages. Your cable TV analyzer is built to provide dependable service. It is unlikel...

Before calling Hewlett-Packard or returning the cable TV analyzer for service,please make the checks listed in “Check the basics.’ If you still have aproblem please read the warranty printed at the front of this guide. If yourcable TV analyzer is covered by a separate maintenance agreement, please b...

If You Have a Problem Before You Call Hewlett-Packard In general, a problem can be caused by a hardware failure, a software error, or a user error. Often problems may be solved by repeating what was being done when the problem occurred. A few minutes spent in performing these simple checks may elimi...

If You Have a Problem B e f o r e Y o u C a l l H e w l e t t - P a c k a r d Reset the cable TV analyzer configuration to the state it was in when it was originally shipped from the factory using DEFAULT . Press the following keys: M o r e o f 3 DEFAULT DEFAULT Note that DEFAULT requires a double k...

If You Have a Problem Before You Call Hewlett-Packard Use CAL FETCH to retrieve the correction data that has previously been saved. If the fetched correction data is corrupt, perform the steps in “If the display is scrambled” to set the correction data back to factory default values. Use CAL FETCH t...

If You Have a Problem Before You Call Hewlett-Packard 2. Press the following cable TV analyzer keys: More 1 of 3 More 2 of 3 DEFAULT CAL DATA Perform the CAL FREQ and CAL AMPTD routines, or the CAL FREQ routine. Be sure CAL OUT is connected to the cable TV analyzer input. If the CAL OUT signal canno...

If You Have a Problem Before You Call Hewlett-Packard Hewlett-Packard has Sales and Service offices around the world toprovide you with complete support for your cable TV analyzer. To obtain servicing information or to order replacement parts, contact the nearestHewlett-Packard Sales and Service Off...

Use the information in this section if it is necessary to return the cable TV analyzer to Hewlett-Packard. C A U T I O N If it becomes necessary to return your analyzer to a Hewlett-Packard service center, save any user-defined functions or measurement personalities to a memory card. It may be neces...

If You Have a Problem Returning the Cable TV Analyzer for Service 3. If you have a front-panel cover, install it on the instrument; if not, protect the front panel with cardboard. 4. Surround the instrument with at least 3 to 4 inches of packing material, or enough to prevent the instrument from mov...

I If You Have a Problem E r r o r M e s s a g e s FAIL Indicates a hardware failure. ADC-GND FAILIndicates a hardware failure. ADC-TIME FAILIndicates a hardware failure. and CAL:- During the self-calibration routine, messages may appear on the display toindicate how the calibration routines are prog...

If You Have a Problem E r r o r M e s s a g e s INVALID FILE: NO ROOMIndicates that there is insufficient space available on the memory card tostore the data. (U) INVALID HP-IB ADRS/OPERATIONAn HP-IB operation was aborted due to an incorrect address or invalid operation. Check that there is only one...

If You Have a Problem E r r o r M e s s a g e s Trace A is not availableIndicates that trace A is in the store-blank mode and cannot be used forlimit-line testing. Use CLEAR WRITE A or VIEW A to change trace A from the store-blank mode to the clear write mode, and then turn on limit-line testing. (U...

I Options and Accessories Options connector for an external keyboard, an HP-IB connector, and the HP 8590 E-Series and L-Series Analyzers and HP Cable TV Analyzer Programmer’s Guide. Option 021 is also available as a retrofit kit (Option after the purchase of your cable TV analyzer, or as a kit HP p...

I Options and Accessories O p t i o n s Option 909 is the same as Option 908 but includes front handles for addedconvenience. Option 909 is also available as a kit (HP part number 5062-4840). An additional copy of the HP Cable TV Analyzer Spectrum Analyzer User’s Guide, the HP Cable TV Analyzer Gett...

Options and Accessories A c c e s s o r i e s The HP Option keyboard is an IBM AT compatible keyboard that can be connected to the external keyboard connector of the rear panel of the cable TV analyzer. Screen titles and remote programming commands can be entered easily with the external keyboard. u...

Glossary absolute amplitude accuracy The degree of correctness or uncertainty (expressed in either volts or power). It includes relative uncertainties plus calibrator uncertainty. Forimproved accuracy, some analyzers specify frequency response relativeto the calibrator as well as relative to the mid...

I Fourier transform See FFT. frequency accuracy The uncertainty with which the frequency of a signal or component is indicated, either in an absolute sense or relative to someother signal or spectral component. Absolute and relative frequencyaccuracies are specified independently. frequency range Th...

Index 10 MHz reference DAC setting, 6-2210 MHz REF OUTPUT, 2-8 + REF DETECTOR, REF DETECTOR, 6-4, 6-6 120 BW, 6-7 200 Hz BW, REF DETECTOR, 6-4, 3 3 bandwidth measurement, 6-99 7 RF bridge, 9-7 9 BW, 6-7 A B, 6-7 A-B A ON OFF, 6-8 A C, 6-8ABCDEF, 6-9accessories AC power source, 9-7external keyboard, ...

label, 2-4 plots, 10 LAST SPAN, 6-83length GATE LENGTH, 6-77 level triggering, gate control, 6-76 LIMIT FAIL, 3-33limit-line functions, 3-39-48limit lines, 3-33 amplitude coordinate, cataloging, creating, delete segment, 6-53displaying, 3-48, 6-85 edit done, 6-59editing, 3-37 edit lower table, edit ...