HP HP 54600B User'S And Service Manual Download Page 137

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To troubleshoot Option 005

(HP 54602B only)

To isolate a malfunction to the Option 005 board, do the following:

Disconnect the three cables that connect the Option 005 board to the
system board.

Verify proper oscilloscope operation, as described in this chapter.

If the oscilloscope passes the performance verification and the
malfunction still occurs when the Option 005 board is reconnected,
then you should replace the Option 005 board.

Service

Troubleshooting the Oscilloscope

4–48

Summary of Contents for HP 54600B

Page 1: ...o the Agilent website in an effort to help you support your product This manual provides the best information we could find It may be incomplete or contain dated information and the scan quality may not be ideal If we find a better copy in the future we will add it to the Agilent website Support for Your Product Agilent no longer sells or supports this product You will find any other available pro...

Page 2: ...021 November 1997 pdf version Nov 1998 For Safety Information Warranties and Regulatory information see the pages behind the index Copyright Hewlett Packard Company 1992 1997 All Rights Reserved HP 54600B HP54601B HP 54602B and HP 54603B Oscilloscopes ...

Page 3: ...ont panel Automatic and cursor measurements of frequency time and voltage Waveform storage Save and recall of 16 front panel setups Peak detect These oscilloscopes are easy to use with familiar controls and high display update rate but with none of the viewing problems that are associated with analog oscilloscopes A bright crisp display is obtained at all sweep speeds and delayed sweep magnificati...

Page 4: ...ide Programmer s Guide with Microsoft Windows Help file ascii help file and sample programs Accessories available HP 34810B BenchLink Scope Software for Windows HP 54650A HP IB Interface Module HP 54652A Parallel Interface Module HP 54654A Operator s Training Kit HP 54655A and HP 54656A Test Automation Modules HP 54657A HP IB Measurement Storage Module HP 54659B Serial Parallel Measurement Storage...

Page 5: ...on 090 Deletes Probes Option 101 Accessory Pouch and Front Panel Cover Option 102 Two Additional HP 10071A 10 1 Probes HP 54602B only Option 103 Operator s Training Kit HP 54654A Option 104 Carrying Case HP 5041 9409 Option 106 BenchLink Scope Software HP 34810B Option 1CM Rackmount Kit HP 5062 7345 Power Cords see the table of Replaceable Parts at the end of Chapter 4 Service iv ...

Page 6: ...ggering Chapter 3 shows how to use enhanced TV Video triggering if you have Option 005 installed in your oscilloscope Service technicians Chapter 4 contains the service information for the oscilloscope There are procedures for verifying performance adjusting troubleshooting and replacing assemblies in the oscilloscope Reference information Chapter 5 lists the characteristics of the oscilloscope Th...

Page 7: ...vi ...

Page 8: ...oscope operation 2 6 To capture a single event 2 8 To capture glitches or narrow pulses 2 10 To trigger on a complex waveform 2 12 To make frequency measurements automatically 2 14 To make time measurements automatically 2 16 To make voltage measurements automatically 2 19 To make cursor measurements 2 22 To view asynchronous noise on a signal 2 26 To reduce the random noise on a signal 2 28 To sa...

Page 9: ...ments 3 12 To use delayed sweep 3 14 To analyze video waveforms with Option 005 3 16 To window in on harmonic distortion using FFT 3 18 To connect to other instruments 3 20 4 Service To return the oscilloscope to Hewlett Packard 4 4 Verifying Oscilloscope Performance 4 5 To check the output of the DC CALIBRATOR 4 6 To verify voltage measurement accuracy 4 7 To verify bandwidth 4 10 To verify bandw...

Page 10: ...onstruct your own dummy load 4 41 To check out the oscilloscope 4 42 To check the Low Voltage Power Supply 4 45 To run the internal self tests 4 46 To troubleshoot Option 005 HP 54602B only 4 48 Replacing Parts in the Oscilloscope 4 49 To replace an assembly 4 50 To remove the fan 4 51 To remove the front panel 4 51 To remove the display 4 53 To remove the system board 4 53 Power supply 4 54 Keybo...

Page 11: ...r System 5 6 XY Operation 5 8 Display System 5 8 Acquisition System 5 9 Advanced Functions 5 10 Power Requirements 5 10 General 5 11 Option 005 General Performance Characteristics HP 54602B only 5 13 Option 005 Trigger System HP 54602B only 5 14 Glossary Index Contents Contents 4 ...

Page 12: ...1 The Oscilloscope at a Glance ...

Page 13: ...scopes The grey keys bring up softkey menus on the display that allow you access to many of the oscilloscope features The white keys are instant action keys and menus are not associated with them Throughout this book the front panel keys are denoted by a box around the name of the key and softkeys are denoted by a change in the text type For example Source is the grey front panel key labeled sourc...

Page 14: ...the top of of the display lets you quickly determine the setup of the oscilloscope In this chapter you will learn to read at a glance the setup of the oscilloscope from the status line Figure 1 4 is a diagram showing which grey keys to press to bring up the various softkey menus HP 54600B and HP 54603B Front Panel Controls Trigger controls Storage keys Horizontal controls General controls Channel ...

Page 15: ...ontrols Horizontal controls Trigger controls Figure 1 2 Channel 3 is off Channel 1 is on ac coupled inverted 100 mV div Channel 2 is on 4 V div Main sweep 500 µs div Delayed sweep is on 500 ns div Autostore is on Auto triggered positive slope trigger source is channel 1 Peak detect is on and operating Channel 4 is on 10 V div Figure 1 3 1 4 ...

Page 16: ...Softkey Menu Reference Press this key To obtain this menu Figure 1 4 To obtain this menu Press this key 1 5 ...

Page 17: ...e or defect or if the instrument does not operate properly or pass performance tests notify your HP sales office If the shipping container is damaged or the cushioning materials show signs of stress notify the carrier as well as your HP sales office Keep the shipping materials for the carrier s inspection The HP office will arrange for repair or replacement at Hewlett Packard s option without wait...

Page 18: ...ss than or equal to 400 V dc plus the peak ac For a complete list of the characteristics see chapter 5 Performance Characteristics Use a cable or a probe to connect a signal to channel 1 If you are using a probe the oscilloscope allows you to enter the attenuation factor for the probe The attenuation factor changes the vertical scaling of the oscilloscope so that the measurement results reflect th...

Page 19: ...e front panel probe adjust signal on the oscilloscope 2 Press Autoscale 3 Use a nonmetallic tool to adjust the trimmer capacitor on the probe for the flattest pulse possible as displayed on the oscilloscope Undercompensation causes pulse rolloff Figure 1 7 Correct compensation with a flat pulse top Figure 1 6 Overcompensation causes pulse peaking Figure 1 5 The Oscilloscope at a Glance To connect ...

Page 20: ...numbered input that has a signal applied If a signal is connected to the external trigger input on the HP 54600B and HP 54603B then it is selected as the trigger source 1 Connect a signal to the oscilloscope 2 Press Autoscale When you press the Autoscale key the oscilloscope changes the front panel setup to display the signal However if you pressed the Autoscale key unintentionally you can use the...

Page 21: ...the ground reference is located from the center of the screen Also notice that the ground symbol on the right side of the display moves in conjunction with the Position knob Measurement hints If the channel is dc coupled you can quickly measure the dc component of the signal by simply noting its distance from the ground symbol If the channel is ac coupled the dc component of the signal is removed ...

Page 22: ...s line to change Channels 1 and 2 have a vernier softkey that allows the Volt Div knob to change the vertical step size in smaller increments These smaller increments are calibrated which results in accurate measurements even with the vernier turned on To turn the channel off either press 1 a second time or press the left most softkey Invert operating hint When you are triggered on the signal you ...

Page 23: ...zontal setup and notice that each change affects the status line differently Press Main Delayed A softkey menu appears on the display with six softkey choices Toggle each of the softkeys and notice which keys cause the status line to change There is also a horizontal vernier softkey that allows the Time Div knob to change the sweep speed in smaller increments These smaller increments are calibrate...

Page 24: ...ime reference softkey is set to center the is located at the center of the display The delay number tells you how far the reference point is located from the trigger point All events displayed left of the trigger point happened before the trigger occurred and these events are called pretrigger information You will find this feature very useful because you can now see the events that led up to the ...

Page 25: ...trigger source is turned on a line is displayed showing the location of the trigger level as long as ac coupling or low frequency reject are not selected 2 Change the trigger setup and notice that each change affects the status line differently Press Source A softkey menu appears on the display showing the trigger source choices Toggle each of the softkeys and notice that each key causes the statu...

Page 26: ... Single as a trigger mode six softkey choices are displayed If you selected TV as a trigger source five other softkey choices are available Toggle each of the softkeys and notice which keys affect the status line On the HP 54600B and HP 54603B external trigger is always dc coupled If you select ac coupling or low frequency reject these functions do not occur until you change the trigger source to ...

Page 27: ...s for a trigger After a trigger is found the remainder of the display is filled Then the oscilloscope stops acquiring data You can also make automatic measurements in the roll mode Notice that the oscilloscope briefly interrupts the moving data while it makes the measurement The acquisition system does not miss any data during the measurement The slight shift in the display after the measurement i...

Page 28: ...2 Operating Your Oscilloscope ...

Page 29: ...s information we recommend you read chapter 1 The Oscilloscope at a Glance This chapter takes you through two new groups of front panel keys STORAGE and the group of keys that contains the Measure Save Recall and Display keys You will also add to your knowledge of the HORIZONTAL keys by using delayed sweep We recommend you perform all of the following exercises so you become familiar with the powe...

Page 30: ...in sweep and the bottom half displays an expanded portion of the main sweep This expanded portion of the main sweep is called the delayed sweep The top half also has two solid vertical lines called markers These markers show what portion of the main sweep is expanded in the lower half The size and position of the delayed sweep are controlled by the Time Div and Delay knobs The Time Div next to the...

Page 31: ...ain Delayed or turn the delay knob The delay value is displayed near the bottom of the display 4 Set the time reference to either left or center Figure 2 1 shows the time reference set to left The operation is like the delayed sweep of an analog oscilloscope where the delay time defines the start of the delayed sweep Time reference set to left Delayed sweep markers Figure 2 1 Operating Your Oscill...

Page 32: ... the area of interest You can place the markers over the area of interest with the delay knob then expand the delayed sweep with the time base knob to increase the resolution Time reference set to center Delayed sweep markers Figure 2 2 Operating Your Oscilloscope To use delayed sweep 2 5 ...

Page 33: ...a stable display 2 Press Autostore Notice that STORE replaces RUN in the status line For easy viewing the stored waveform is displayed in half bright and the most recent trace is displayed in full bright Autostore is useful in a number of applications Displaying the worst case extremes of varying waveforms Capturing and storing a waveform Measuring noise and jitter Capturing events that occur infr...

Page 34: ...surements on page 2 22 To clear the display press Erase To exit the Autostore mode press either Run or Autostore Summary of storage keys Run The oscilloscope acquires data and displays the most recent trace Stop The display is frozen Autostore The oscilloscope acquires data displaying the most recent trace in full bright and previously acquired waveforms in half bright Erase Clears the display Ope...

Page 35: ... Select a trigger source with the softkeys Press Slope Coupling Select a trigger slope with the softkeys Turn the Level knob to a point where you think the trigger should work 3 Press Mode then press the Single softkey 4 Press Erase to clear previous measurements from the display 5 Press Run Pressing Run arms the trigger circuit When the trigger conditions are met data appears on the display repre...

Page 36: ...lloscope will recover the event and restore the oscilloscope settings To clear the display press Erase To exit the Autostore mode press either Run or Autostore Notice that RUN replaces STORE in the status line indicating that the oscilloscope has exited the Autostore mode Operating hint The single shot bandwidth is 2 MHz for single channel operation and 1 MHz for two channel operation There are tw...

Page 37: ... s div to 50 µs div When operating the initials Pk are displayed in the status line in inverse video At sweep speeds faster than 50 µs div the Pk initials are not displayed in inverse video which indicates that peak detect is not operating Use Autostore for the following cases waveforms that are changing waveforms that you want to view and compare with stored waveforms and narrow pulses or glitche...

Page 38: ...steps Press Main Delayed Next press the Delayed softkey To obtain a better resolution of the glitch expand the time base To set the expanded portion of the main sweep over the glitch use the Delay knob To characterize the glitch use the cursors or the automatic measurement capabilities of the oscilloscope Operating Your Oscilloscope To capture glitches or narrow pulses 2 11 ...

Page 39: ...nd waits for the trigger that results in figure 2 4 Also notice in figure 2 3 that the trigger is stable but the waveform is not synchronized with the trigger Holdoff operating hints 1 The advantage of digital holdoff is that it is a fixed number As a result changing the time base settings does not affect the holdoff number so the oscilloscope remains triggered In contrast the holdoff in analog os...

Page 40: ...nchronized with the trigger Holdoff synchronizes the waveform with the trigger In figure 2 4 the holdoff is set to about 25 µs the duration of the pattern Figure 2 3 Figure 2 4 Operating Your Oscilloscope To trigger on a complex waveform 2 13 ...

Page 41: ...ect a channel for the frequency measurement 4 Press the Freq softkey The oscilloscope automatically measures the frequency and displays the result on the lower line of the display The number in parentheses after the word Freq is the number of the channel that the oscilloscope used for the measurement The oscilloscope retains in memory and displays the three most current measurement results If you ...

Page 42: ...nu softkey key The oscilloscope makes automatic measurements on the first displayed event Figure 2 5 shows how to use delayed sweep to isolate an event for a frequency measurement If the measurement is not possible in the delayed time base mode then the main time base is used If the waveform is clipped it may not be possible to make the measurement Delayed time base isolates an event for a frequen...

Page 43: ...f the time measurement points 1 Connect a signal to the oscilloscope and obtain a stable display When the signal has a well defined top and bottom see figure 2 8 the rise time and fall time measurements are made at the 10 and 90 levels If the oscilloscope cannot find a well defined top or bottom see figure 2 9 the maximum and minimum levels are used to calculate the 10 and 90 points Time Measureme...

Page 44: ...er to figure 2 6 Clear Meas clear measurement Erases the measurement results and removes the cursors from the display Next Menu Replaces the softkey menu with six additional softkey choices 3 Press the Next Menu softkey Another time measurement softkey menu appears with six additional choices Four of the softkeys are time measurement functions Show Meas show measurement Displays the horizontal and...

Page 45: ...ous softkey menu 4 Press the Rise Time softkey The oscilloscope automatically measures the rise time of the signal and displays the result on the display The oscilloscope makes automatic measurements on the first displayed event Figure 2 7 shows how to use delayed sweep to isolate an edge for a rise time measurement Delayed sweep isolates a leading edge for a rise time measurement Figure 2 7 Opera...

Page 46: ...d base The following exercise guides you through the Voltage keys by making an rms voltage measurement Figures 2 8 and 2 9 show pulses with some of the voltage measurement points Pulse where the top and bottom are well defined Pulse where the top and bottom are not well defined Figure 2 8 Figure 2 9 Operating Your Oscilloscope To make voltage measurements automatically 2 19 ...

Page 47: ...signal Clear Meas clear measurement Erases any measurement results from the display and removes the horizontal and vertical cursors from the display Next Menu Replaces the softkey menu with six additional softkey choices 3 Press the Vrms softkey The oscilloscope automatically measures the rms voltage and displays the result on the display The oscilloscope makes automatic measurements on the first ...

Page 48: ...s are voltage measurement functions Show Meas show measurement Displays the horizontal and vertical cursors that show where the measurement was taken on the signal Voltage Measurements Four additional voltage measurement choices are available Vmax Vmin Vtop Vbase Previous Menu Returns to the previous softkey menu Figure 2 10 Operating Your Oscilloscope To make voltage measurements automatically 2 ...

Page 49: ...ents 1 Connect a signal to the oscilloscope and obtain a stable display 2 Press Cursors A softkey menu appears with six softkey choices Four of the softkeys are cursor functions Source Selects a channel for the voltage cursor measurements Active Cursor There are four cursor choices V1 and V2 are voltage cursors while t1 and t2 are time cursors Use the knob below the Cursors key to move the cursors...

Page 50: ...sed to measure pulse width at levels other then the 50 points Cursors used to measure the frequency of the ringing on a pulse Figure 2 11 Figure 2 12 Operating Your Oscilloscope To make cursor measurements 2 23 ...

Page 51: ...annel delay measurements The cursors track delayed sweep Expand the display with delayed sweep then characterize the event of interest with the cursors Figure 2 13 Figure 2 14 Operating Your Oscilloscope To make cursor measurements 2 24 ...

Page 52: ...sors to move together when the cursor knob is adjusted By moving the cursors together you can check for pulse width variations in a pulse train as figures 2 15 and 2 16 show Figure 2 15 Figure 2 16 Operating Your Oscilloscope To make cursor measurements 2 25 ...

Page 53: ...al that is not synchronous to the period of the waveform 1 Connect a noisy signal to the oscilloscope and obtain a stable display Figure 2 17 shows a waveform with asynchronous noise at the top of the pulse Asynchronous noise at the top of the pulse Figure 2 17 Operating Your Oscilloscope To view asynchronous noise on a signal 2 26 ...

Page 54: ...l into the noise region of the signal 4 Decrease the sweep speed for better resolution of the asynchronous noise To characterize the asynchronous noise signal use the cursors This is a triggered view of the asynchronous noise shown in Figure 2 17 Figure 2 18 Operating Your Oscilloscope To view asynchronous noise on a signal 2 27 ...

Page 55: ...ed waveform 1 Connect a signal to the oscilloscope and obtain a stable display 2 Remove the noise from the trigger path by turning on either high frequency reject or noise reject High frequency reject HF reject adds a low pass filter with the 3 dB point at 50 kHz see figure 2 19 You use HF reject to remove high frequency noise such as AM or FM broadcast stations from the trigger path HF reject 3 d...

Page 56: ...ses the trigger hysteresis band By increasing the trigger hysteresis band you reduce the possibility of triggering on noise However this also decreases the trigger sensitivity so that a slightly larger signal is required to trigger the oscilloscope Random noise on the displayed waveform 3 dB down point Pass Band dc 0 dB 50 kHz Figure 2 20 Figure 2 21 Operating Your Oscilloscope To reduce the rando...

Page 57: ...ch of the averaging process is finished by turning to inverse video as the oscilloscope performs averaging The higher the number of averages the more noise that is removed from the display However the higher the number of averages the slower the displayed waveform responds to waveform changes You need to choose between how quickly the waveform responds to changes and how much noise there is on the...

Page 58: ... Mem Turns on or off the selected memory Save to Saves the waveform to the selected memory The front panel setup is saved to a separate memory location Clear Erases the selected memory Recall Setup Recalls the front panel setup that was saved with the waveform 3 Toggle the Trace softkey to select memory 1 or memory 2 4 Press the Save to softkey The current display is copied to the selected memory ...

Page 59: ...tile trace memories When you add an interface module to the oscilloscope the trace memories become nonvolatile To save or recall front panel setups There are 16 memories for storing front panel setups Saving front panel setups can save you time in situations where several setups are repeated many times 1 Press Setup 2 To change the selected memory location press either the left most softkey or tur...

Page 60: ... all cursors are set to time voltage zero Trace memories Both trace memory 1 and 2 are off trace 1 memory is selected Setup memories Setup memories are off setup memory 1 is selected Graticule Grid set to Full Autostore Off Time base Time reference center main not delayed sweep main and delay value 0 100 µs div main time base Display Vectors On Display Mode Normal Channels Channel 1 on Position 0 ...

Page 61: ...ase shift between two signals of the same frequency with the Lissajous method 1 Connect a signal to channel 1 and a signal of the same frequency but out of phase to channel 2 2 Press Autoscale press Main Delayed then press the XY softkey 3 Center the signal on the display with the Position knobs and use the Volts Div knobs and the vertical Vernier softkeys to expand the signal for convenient viewi...

Page 62: ...ions of the Y versus X display use the Z axis input Z axis turns on and off the trace analog oscilloscopes called this Z blanking because it turned the beam on and off When Z is low 1 3 V Y versus X is displayed when Z is high 1 3 V the trace is turned off 4 Press Cursors 5 Set the Y2 cursor to the top of the signal and set Y1 to the bottom of the signal Note the Y value at the bottom of the displ...

Page 63: ...of the signal Again note the Y value Y cursors centered 7 Calculate the phase difference using formula below sin θ second Y first Y 111 9 244 4 27 25 degrees of phase shift Figure 2 25 Operating Your Oscilloscope To use the XY display mode 2 36 ...

Page 64: ...Signals are 90 out of phase Signals are in phase Figure 2 26 Figure 2 27 Operating Your Oscilloscope To use the XY display mode 2 37 ...

Page 65: ...l is automatically set to the sync pulse tips For this exercise we connected the oscilloscope to the video output terminals on a television Then we set up the oscilloscope to view these parts of a TV signal the second vertical interval with delayed sweep windowed on the vertical interval test signals VITS and the IRE displayed full screen 1 Connect a TV signal to channel 1 then press Autoscale 2 P...

Page 66: ...b delay about 800 µs 6 Press Main Delayed then press the Delayed softkey 7 Set the delayed sweep to 20 µs div then set the expanded portion over the VITS delay about 988 8 µs Second vertical interval windowed on the VITS Figure 2 28 Operating Your Oscilloscope To analyze video waveforms 2 39 ...

Page 67: ...y of the IRE Delay in TV line units hint HP 54600B series oscilloscopes with system ROM versions 2 1 and greater have the ability to display delay in TV line units Using the TV field trigger mode activates this line counting feature When Field 1 or Field 2 is selected as the trigger source delay can be set in terms of time or line number Figure 2 29 Operating Your Oscilloscope To analyze video wav...

Page 68: ... its frequency is an odd multiple of one half the line frequency When looking at live video usually a field use peak detect to improve the appearance of the display When making cursor measurements use Autostore since you are usually looking for pulse flatness and extremes When using line trigger use minimum holdoff to display all the lines Due to the relationship between the horizontal and vertica...

Page 69: ...2 42 ...

Page 70: ...3 Using Option 005 Enhanced TV Video Trigger HP 54602B ...

Page 71: ...n the exercises in this chapter to familiarize you with its basic controls To use the TV Video trigger you must be familiar with your oscilloscope In summary the front panel of the oscilloscope has knobs grey keys and white keys The knobs are used most often and are similar to the knobs on other oscilloscopes The grey keys bring up softkey menus on the display that allow you access to many of the ...

Page 72: ...ments The oscilloscope s superior display gives you bright easily viewed displays of any part of the video waveform No longer do you need to use a viewing hood or to be constantly adjusting intensity and focus controls Analysis of video waveforms is simplified by the oscilloscope s ability to trigger on any selected line of the video signal You can make additional measurements using the All lines ...

Page 73: ...RIC is used for other TV Video standards If your TV standard has been previously selected you may skip this step 4 Press Mode then press the Video Autoscale softkey Provide correct source matching Many TV signals are produced from 75Ω sources To provide correct matching to these sources an HP 11094B 75Ω load is included as an accessory For oscilloscopes that have selectable input impedance the 1 M...

Page 74: ...he front panel then press the Mode softkey until Line appears Select the number of the line you want to examine by pressing the Trigger On Line softkey or by rotating the knob closest to the Cursors key 3 Press the Trigger On softkey to select the TV field of the line you want to trigger on Your choices are Field 1 Field 2 and Alt Fld alternate fields Alternate triggering If Alt Fld is selected th...

Page 75: ...e number of a count instead of a real line number This is reflected in the label above the softkey changing from Line to Cnt In the Trigger On selections Field 1 Field 2 and Vertical are used to indicate where the counting starts For an interlaced TV system the counting starts from the rising edge of the first vertical serration pulse of Field 1 and or Field 2 For a non interlaced TV system the co...

Page 76: ...ction To autoscale on a video signal 2 Press Slope Coupling in the TRIGGER section of the front panel then press the Mode softkey until All Lines appears Vertical interval can be blocked The 21 lines in the Vertical Interval can be blocked from this display if the Vert Rej On mode is selected The three color sync bursts being displayed inside the white bars are on vertical interval lines These cou...

Page 77: ... in the specified field 1 or 2 1 Select the TV display TV as the trigger mode and the appropriate TV standard as described in the section To autoscale on a video signal 2 Press Slope Coupling in the TRIGGER section of the front panel then press the Mode softkey until Field 1 or Field 2 appears Triggering on Field 1 Serration pulses Equalizing pulses Figure 3 3 Using Option 005 Enhanced TV Video Tr...

Page 78: ... it finds at the start of acquisition 1 Select the TV display TV as the trigger mode and the appropriate TV standard as described in the section To autoscale on a video signal 2 Press Slope Coupling in the TRIGGER section of the front panel then press the Mode softkey until All Fields appears Triggering on All Fields Figure 3 4 Using Option 005 Enhanced TV Video Trigger HP 54602B To trigger on all...

Page 79: ...the Mode softkey until Field 1 or Field 2 appears The trigger circuits look for the position of the start of Vertical Sync to determine the field But this definition of field does not take into consideration the phase of the reference subcarrier When Field 1 is selected the trigger system will find any field where the vertical sync starts on Line 4 In the case of NTSC video the oscilloscope will t...

Page 80: ...elds will be selected with Field 2 Table 3 2 Holdoff Settings Video Standard Fields Picture Holdoff Range NTSC 4 33 5 ms to 50 0 ms PAL 8 80 7 ms to 120 ms SECAM 4 40 4 ms to 60 ms PAL M 8 80 4 ms to 120 ms The holdoff can be more easily set if the sweep speed is set to 5 ms div Once you have established your desired holdoff time return to the desired time base setting The holdoff setting will rem...

Page 81: ... appears with six softkey choices Four of the softkeys are cursor functions Source Selects a channel for the voltage cursor measurements The cursor is calibrated to the Volts div of the selected channel Active Cursor There are four cursor choices V1 and V2 are voltage cursors t1 and t2 are time cursors Use the knob below the Cursors key to move the cursors To move the cursors together press the V1...

Page 82: ...Color Sync measured with the cursors as 40 IRE Figure 3 7 Using Option 005 Enhanced TV Video Trigger HP 54602B To make cursor measurements 3 13 ...

Page 83: ...ze and position of the delayed sweep are controlled by the Time Div and Delay knobs The Time Div next to the symbol is the delayed sweep sec div The delay value is displayed for a short time at the bottom of the display To display the delay value of the delayed time base either press Main Delayed or turn the Delay knob To change the main sweep Time Div you must turn off the delayed sweep Since bot...

Page 84: ...step measuring sync pulse fall time with delayed sweep Windowed frequency measurement in a multi burst by use of delayed sweep Figure 3 8 Figure 3 9 Using Option 005 Enhanced TV Video Trigger HP 54602B To use delayed sweep 3 15 ...

Page 85: ...minate this position shifting as the DC component of the video changes select AC coupling For this exercise we connect the oscilloscope to the video output terminals on a television We set up the oscilloscope to view the second vertical interval with delayed sweep windowed on the vertical interval test signals VITS Then we make windowed measurements with the delayed sweep 1 Connect a TV signal to ...

Page 86: ...the Delayed softkey 7 Set the delayed sweep to 20 µs div then set the expanded portion over the VITS delay about 988 8 µs Second VITS Displayed This figure shows the second vertical interval test signals displayed with delayed sweep Figure 3 10 Using Option 005 Enhanced TV Video Trigger HP 54602B To analyze video waveforms with Option 005 3 17 ...

Page 87: ...domain analysis on a time domain waveform using the Fast Fourier Transform FFT A special case of measuring the harmonic distortion in a sine wave is found in video applications The 3 58 MHz color subcarrier frequency embedded in an NTSC composite video signal has some amount of harmonic distortion associated with the subcarrier frequency To measure just this signal the scope s time division and de...

Page 88: ...cy domain display These frequency components would have obscured the color subcarrier and its harmonics This example illustrates a general technique of using the time domain controls of the scope to select specific time intervals for FFT analysis The FFT function shows that the harmonic content of the color busrt is more than 31 dB below the subcarrier Figure 3 12 Using Option 005 Enhanced TV Vide...

Page 89: ...the frequency to be measured to channel 1 3 Press Autoscale then select the trigger source to be channel 1 Adjust the counter as required The amplitude of the vertical output signal is proportional to the amplitude as displayed on the oscilloscope The trigger source selection is the control that determines which channel s signal is present at the vertical output VERT OUT connector on the rear of t...

Page 90: ...4 Verifying Oscilloscope Performance 4 5 Adjusting the Oscilloscope 4 27 Troubleshooting the Oscilloscope 4 40 Replacing Parts in the Oscilloscope 4 49 Service ...

Page 91: ...nty period has expired and you decide to service the oscilloscope yourself the instructions in this chapter can help you keep the oscilloscope operating at optimum performance This chapter is divided into the following four sections Verifying Oscilloscope Performance on page 4 5 Adjusting the Oscilloscope on page 4 27 Troubleshooting the Oscilloscope on page 4 40 Replacing Parts in the Oscilloscop...

Page 92: ... Stability 5 ppm after 1 2 hour TG 501A and TM 503A P Feedthrough 50 Ω BNC m and f HP 10100C P A Power splitter Outputs differ 0 15 dB HP 11667B P Shorting cap BNC HP 1250 0774 P Adapter SMA f to BNC m HP 1250 1787 A Adapter BNC f f HP 1250 0080 A Adapter BNC tee m f f HP 1250 0781 A Adapter N m to BNC f Qty 3 HP 1250 0780 P Adapter BNC f to dual banana m HP 1251 2277 P Cable BNC Qty 3 HP 10503A P...

Page 93: ...odules attached to the rear of the oscilloscope Do not ship accessories back to Hewlett Packard unless they are associated with the failure symptoms 3 Protect the control panel with cardboard 4 Pack the oscilloscope in styrofoam or other shock absorbing material and place it in a strong shipping container You can use either the original shipping containers or order materials from an HP Sales Offic...

Page 94: ...n the following procedures Perform self calibration first For the oscilloscope to meet all of the verifications tests in the ambient temperature where it will be used the self calibration tests described on page 4 31 should first be performed Allow the unit to operate for at least 30 minutes before performing the self calibration Each procedure lists the recommended equipment for the test You can ...

Page 95: ...ed Model Part Digital Multimeter 0 1 mV resolution better than 0 01 accuracy HP 34401A Cable BNC HP 10503A 1 Connect a multimeter to the rear panel DC CALIBRATOR connector 2 Press Print Utility 3 Press the Self Test softkey then press the DAC softkey The multimeter should measure 0 00 V dc 500 µV If the result is not within the test limits see Troubleshooting the oscilloscope on page 4 40 4 Press ...

Page 96: ...full scale HP 54600B HP 54601B HP 54602B 2 4 of full scale HP 54603B Table 4 3 Equipment Required Equipment Critical specifications Recommended Model Part Power supply 14 mV to 35 Vdc 0 1 mV resolution HP 6114A Digital multimeter Better than 0 1 accuracy HP 34401A Cable BNC Qty 2 HP 10503A Shorting cap BNC HP 1250 0774 Adapter BNC f to banana m HP 1251 2277 Adapter BNC tee m f f HP 1250 0781 Servi...

Page 97: ...tom of the display 2 Press Cursors then press the V1 softkey 3 Using the cursors knob set the V1 cursor on the baseline If you are in an electrically noisy environment it can help to place a shorting cap on the input BNC connector when positioning V1 4 Connect the power supply to the oscilloscope and to the multimeter using the BNC tee and cables 5 Set the power supply output to the first line in ...

Page 98: ...70 V to 1 430 V 1 362 V to 1 438 V 0 1 V Div 700 mV 684 8 mV to 715 2 mV 684 8 mV to 715 2 mV 680 8 mV to 719 2 mV 50 mV Div 350 mV 342 4 mV to 357 6 mV 342 4 mV to 357 6 mV 340 4 mV to 359 6 mV 20 mV Div 140 mV 137 0 mV to 143 0 mV 137 0 mV to 143 0 mV 136 2 mV to 143 8 mV 10 mV Div 70 mV 68 48 mV to 71 52 mV 68 48 mV to 71 52 mV 68 08 mV to 71 92 mV 5 mV Div 35 mV 34 48 mV to 36 52 mV 34 24 mV t...

Page 99: ...rocedure for checking bandwidth see To verify the bandwidth alternate method on page 4 12 Test limits HP 54600B and HP 54601B all channels 3 dB dc to 100 MHz ac coupled 10 Hz to 100 MHz HP 54602B Channels 1 2 3 dB 10 mV div to 5 V div dc to 150 MHz 1 mV div to 5 mV div dc to 100 MHz ac coupled 10 Hz to upper limit of vertical range Channels 3 4 3 dB dc to 250 MHz HP 54603B all channels 3 dB dc to ...

Page 100: ... Setting Selected Channel HP 54600B HP 54601B HP 54602B HP 54603B Channel 1 100 MHz 100 MHz 150 MHz 60 MHz Channel 2 100 MHz 100 MHz 150 MHz 60 MHz Channel 3 100 MHz 250 MHz Channel 4 100 MHz 250 MHz 1mv div to 5 mv div dc 100 MHz 6 Change the sweep speed of the oscilloscope to 5 ns div and observe the display The vertical amplitude of the signal on the display should be equal to or greater than 5...

Page 101: ...ls 1 2 3 dB dc to 150 MHz ac coupled 10 Hz to 150 MHz Channels 3 4 3 dB dc to 250 MHz HP 54603B all channels 3 dB dc to 60 MHz ac coupled 10 Hz to 60 MHz Table 4 7 Equipment Required Equipment Critical specifications Recommended Model Part Signal generator 1 to 100 MHz at 200 mV 250 MHz for HP 54602B HP 8656B opt 001 Power meter and Power Sensor 1 to 100 MHz 3 accuracy 250 MHz for HP 54602B HP 436...

Page 102: ...t the input of the oscilloscope 2 Set up the oscilloscope a Press Setup then press the Default Setup softkey b Set the time base to 500 ns div c Set channel 1 to 100 mV div d Press Display then press the Average softkey e Toggle the Average softkey to select 8 averages 3 Set the signal generator for 1 MHz at about 5 6 dBm Notice that the signal on the display is about 5 cycles and six divisions of...

Page 103: ...al generator to the value shown below for your instrument Table 4 8 Signal Generator Frequency Setting Selected Channel HP 54600B HP 54601B HP 54602B HP 54603B Channel 1 100 MHz 100 MHz 150 MHz 60 MHz Channel 2 100 MHz 100 MHz 150 MHz 60 MHz Channel 3 100 MHz 250 MHz Channel 4 100 MHz 250 MHz 1mv div to 5 mv div 100 MHz 7 Set the calibration factor of the power meter to 100 MHz percent value from ...

Page 104: ...ifference in the power meter reading from step 7 Make sure you observe all number signs For example Result from step 9 2 3 dB Power meter reading from step 7 0 2 dB REL True response 2 3 0 2 2 1 dB The true response should be 3 dB If the result is not 3 dB see Troubleshooting the Oscilloscope on page 4 40 11 Repeat steps 1 to 10 for channel 2 channels 2 to 4 on the HP 54601B and HP 54602B When you...

Page 105: ... ppm after 1 2 hour TG 501A and TM 503A Cable BNC HP 10503A Termination 50 Ω BNC connectors m f HP 10100C 1 Connect the time mark generator to channel 1 using the feedthrough at the oscilloscope input Then set the time mark generator for 0 1 ms markers 2 Setup the oscilloscope a Press Setup then press the Default Setup softkey b Press Diplay then press the Vectors Off softkey c Press Autoscale d S...

Page 106: ...4601B HP 54602B only 6 Change the time mark generator to 10 ns and change the time base to 5 ns div Adjust the trigger level to obtain a stable display 7 Press Time then press the Freq and Period softkeys You should measure the following Frequency 100 MHz test limits are 97 08 MHz to 103 1 MHz Period 10 ns test limits are 9 699 ns to 10 30 ns If the measurements are not within the test limits see ...

Page 107: ...div or 3 5 mV p p dc to 100 MHz 1 div or 10 mV p p HP 54602B Channels 1 2 5 mV div dc to 25 MHz 0 35 div or 3 5 mV p p dc to 150 MHz 1 div or 10 mV p p 1 mV to 5 mV div dc to 25 MHz 1 div or 2 mV dc to 100 MHz 1 5 div or 3 mV Channels 3 4 dc to 25 MHz 0 35 div or 3 5 mV p p dc to 250 MHz 1 div or 100 mV p p HP 54603B all channels dc to 25 MHz 0 35 div or 3 5 mV p p dc to 60 MHz 1 div or 10 mV p p ...

Page 108: ...igger sensitivity at 25 MHz and 0 35 divisions a Set the signal generator to 25 MHz and about 50 mV b Press Autoscale c Decrease the output of the signal generator until there is 0 35 vertical divisions of the signal displayed The trigger should be stable If the triggering is not stable try adjusting the trigger level If adjusting the trigger level makes the triggering stable the test still passes...

Page 109: ...the signal generator until there is 1 vertical division of the signal displayed The trigger should be stable If the triggering is not stable try adjusting the trigger level If adjusting the trigger level makes the triggering stable the test still passes If adjusting the trigger does not help see Troubleshooting the Oscilloscope on page 4 40 5 Repeat steps 1 through 4 for channel 2 on the HP 54600B...

Page 110: ...ing is not stable try adjusting the trigger level If adjusting the trigger level makes the triggering stable the test still passes If adjusting the trigger does not help see Troubleshooting the Oscilloscope on page 4 40 7 Verify the external trigger sensitivity at 25 MHz and 50 mV p p HP 54600B and HP 54603B only a Change the output of the signal generator to 25 MHz at about 100 mV b Press Autosca...

Page 111: ... to oscilloscope channel 1 input 2 Set the signal generator to equal the full bandwidth of your oscilloscope and set the output level to 0 dBm 3 Connect the signal generator to oscilloscope channel 1 Set channel 1 Input to 50Ω to correctly terminate the signal generator 4 Press Autoscale 5 Adjust the oscilloscope controls and signal generator to obtain an 8 division high display 6 Connect oscillos...

Page 112: ... 8 mV to 715 2 mV __________ __________ 50 mV Div 350 mV 342 4 mV to 357 6 mV __________ __________ 20 mV Div 140 mV 137 0 mV to 143 0 mV __________ __________ 10 mV Div 70 mV 68 48 mV to 71 52 mV __________ __________ 5 mV Div 35 mV 34 48 mV to 35 52 mV __________ __________ 2 mV Div 14 mV 12 48 mV to 15 52 mV __________ __________ Bandwidth Test Limits Channel 1 Channel 2 3 dB __________ _______...

Page 113: ...715 2 mV __________ __________ __________ __________ 50 mV Div 350 mV 342 4 mV to 357 6 mV __________ __________ __________ __________ 20 mV Div 140 mV 137 0 mV to 143 0 mV __________ __________ __________ __________ 10 mV Div 70 mV 68 48 mV to 71 52 mV __________ __________ __________ __________ 5 mV Div 35 mV 34 48 mV to 35 52 mV __________ __________ __________ __________ 2 mV Div 14 mV 12 48 m...

Page 114: ...________ 20 mV Div 140 mV 137 0 mV to 143 0 mV __________ __________ __________ __________ 10 mV Div 70 mV 68 48 mV to 71 52 mV __________ __________ __________ __________ 5 mV Div 35 mV 34 24 mV to 35 76 mV __________ __________ __________ __________ 2 mV Div 14 mV 13 70 mV to 14 30 mV __________ __________ __________ __________ 1 mV Div 7 mV 6 696 mV to 7 304 mV __________ __________ __________ ...

Page 115: ...00 mV 680 8 mV to 719 2 mV _________ _________ 50 mV Div 350 mV 340 4 mV to 359 6 mV _________ _________ 20 mV Div 140 mV 136 20 mV to 143 8 mV _________ _________ 10 mV Div 70 mV 68 08 mV to 71 92 mV _________ _________ 5 mV Div 35 mV 33 08 mV to 36 92 mV _________ _________ 2 mV Div 14 mV 12 08 mV to 15 92 mV _________ _________ Bandwidth Test Limits Channel 1 Channel 2 3 dB _________ _________ ...

Page 116: ...AR NI NG SHOCK HAZARD The maintenance described in this section is performed with power supplied to the oscilloscope and with the protective covers removed Only trained service personnel who are aware of the hazards involved should perform the maintenance Whenever possible perform the procedures with the power cord removed from the oscilloscope Read the safety summary at the back of this book befo...

Page 117: ...uired Equipment Critical specifications Recommended Model Part Digital multimeter 0 1 mV resolution accuracy 0 05 HP 34401A 1 Set up the oscilloscope for the voltage adjustment a Turn off the oscilloscope and disconnect the power cord b Remove the cover from the oscilloscope c Place the oscilloscope on its side d Connect the negative lead of the digital multimeter to a ground point on the oscillos...

Page 118: ...of test points Make sure that the voltage measurements are within the following tolerances Table 4 13 Power Supply Voltage Tolerances 5 1 V 150 mV 4 95 V to 5 25 V 15 75 V 787 mV 14 96 V to 16 54 V 15 75 V 787 mV 14 96 V to 16 54 V Low Voltage Power Supply voltage test points bottom side of oscilloscope Figure 4 1 Service Adjusting the Oscilloscope 4 29 ...

Page 119: ... not adjustable and are dependent upon the 5 1 V supply If adjusting the power supply does not bring all the voltages within tolerance see Troubleshooting the Oscilloscope on page 4 40 Low Voltage Power Supply adjustment location top side of oscilloscope 5 1 V adjust Figure 4 2 Service Adjusting the Oscilloscope 4 30 ...

Page 120: ...2 HP 10502A Adapter BNC tee m f f HP 1250 0781 Adapter BNC f f HP 1250 0080 Feedthrough 50 Ω BNC m and f HP 10100C 1 Check the rear panel DC CALIBRATOR output level If you are not sure how to check the DC CALIBRATOR see To check the output of the DC CALIBRATOR on page 4 6 2 Load the default calibration factors a Set the rear panel CALIBRATION switch to UNPROTECTED up position b Press Print Utility...

Page 121: ...r the message Press Continue to return to calibration menu appears on the display press the Continue softkey 6 Connect a pulse generator set to 100 kHz and 1 V p p and with a rise time less than 5 ns to channels 1 and 2 Place the feedthrough at the BNC tee Make sure you use the HP 10502A cables to ensure equal cable lengths Delay self cal 7 Press the Delay softkey then follow the instructions on t...

Page 122: ... off the oscilloscope and disconnect the power cord 2 Remove the cover from the oscilloscope 3 Reconnect the power cord and turn on the oscilloscope 4 Using the BNC cable and 50 Ω feedthrough connect the square wave generator to channel 1 5 Adjust the generator for about 30 kHz at about 3 Vp p 6 Press Autoscale 7 Set channel 1 to 500 mV div You must perform this adjustment on the 500 mV range 8 Ad...

Page 123: ...or as flat a pulse top as possible 10 Repeat steps 4 through 9 for channel 2 channels 2 to 4 on the HP 54601B and HP 54602B Low frequency compensation adjustment locations Low frequency pulse response adjustments Figure 4 3 Service Adjusting the Oscilloscope 4 34 ...

Page 124: ...r SMA f to BNC m HP 1250 1787 Feedthrough 50 Ω BNC m and f HP 10100C 1 Turn off the oscilloscope and disconnect the power cord 2 Remove the cover from the oscilloscope 3 Reconnect the power cord and turn on the oscilloscope 4 Connect the pulse generator to channel 1 5 Press Autoscale 6 Change the time base to 10 ns div 7 Press 1 then toggle the Vernier softkey to On 8 Adjust the Volt Div until the...

Page 125: ...or division of overshoot 6 10 Repeat steps 4 through 9 for channel 2 channels 2 to 4 on the HP 54601B and HP 54602B High frequency pulse response adjustment locations High frequency pulse response adjustments Figure 4 4 Service Adjusting the Oscilloscope 4 36 ...

Page 126: ...om the oscilloscope 3 Reconnect the power cord and turn on the oscilloscope 4 Connect the digital multimeter to the end of R901 closest to the fuse See figure on next page 5 Adjust B for 14 00 V 6 Press Print Utility Press the Self Test Softkey then press the Display softkey 7 Adjust V HO vertical hold for vertical synchronization 8 Set the intensity control on the front panel to mid range 9 Adjus...

Page 127: ...lay horizontally 13 Adjust Focus for the best focus 14 Press any key to continue to the normal display pattern Then adjust V Lin vertical linearity for equal sizing of all four corner squares 15 Adjust V Size vertical size to center the display vertically at the maximum allowable size without losing the text Adjustments V Lin and V Size interact so you may need to readjust sizing and vertical cent...

Page 128: ...e lead of the digital multimeter to a ground point on the oscilloscope d Connect the oscilloscope rear panel VERT OUT connector to the voltage inputs of the digital multimeter DMM using the DMM s test leads and the BNC to dual banana post adapter e Reconnect the power cord and turn on the oscilloscope f Setup the digital multimeter for a DC voltage measurement g Press the Setup front panel key on ...

Page 129: ... result in electrical shock C AU TI O N Do not disconnect any cables or remove any assemblies with the power applied to the oscilloscope or damage to the oscilloscope can occur C AU TI O N ELECTROSTATIC DISCHARGE ESD can damage electronic components When using any of the procedures in this chapter you should use proper ESD precautions As a minimum you should place the instrument on a properly grou...

Page 130: ...5 17 or 19 15 75 V requires a 1 3 A load 12 2 Ω and 20 5 W on pin 11 or 13 With the fan operating 15 75 V requires a 0 6 A load 26 25 Ω and 9 5 W on pin 5 or 7 Without the fan operating 15 75 V requires a 0 8 A load 26 25 Ω and 13 W on pin 5 or 7 3 Connect the other end of the resistors to ground pins 2 4 6 and 8 Low Voltage Power Supply connector pinout Connector Figure 4 6 Service Troubleshootin...

Page 131: ...pe If the display comes on after a few seconds HP logo and copyright text followed by a graticule with text at top of the display go to To check the Low Voltage Power Supply on page 4 45 If after checking the Low Voltage Power Supply the voltages are within the test limits go to step 8 If not go to step 6 If the display did not come on do the steps below a Check the intensity knob setting to see i...

Page 132: ... the display board 7 Measure the power supply voltages again steps 1 3 If the voltages are within the test limits replace the display assembly If not do the steps below a Disconnect the power cord b Disconnect the ribbon cable from the power supply c Connect the dummy load to the power supply connector d Connect the power cord then measure the power supply voltages again see new tolerances below 5...

Page 133: ... out circuit If the fan is defective the Low Voltage Power Supply shuts down when it gets too hot for safe operation a Disconnect the fan cable from the power supply b Measure the fan voltage at the connector on the power supply If the fan voltage is 8 3 Vdc replace the fan If not replace the power supply Service Troubleshooting the Oscilloscope 4 44 ...

Page 134: ...upply Voltage Tolerances Supply Voltage Tolerance 5 1 V 150 mV 4 95 V to 5 25 V 15 75 V 787 mV 14 96 V to 16 54 V 15 75 V 787 mV 14 96 V to 16 54 V Low Voltage Power Supply voltage test points If the 5 1 V measurement is out of the test limits adjust the 5 1 V adjustment on the power supply The 15 V supplies are not adjustable and are dependent upon the 5 1 V supply Blown fuse If the fuse is blown...

Page 135: ...top softkey two or three times the display indicates how many times then go to step 2 If not replace the keyboard and keyboard assembly 2 Check the output level of the DAC a Press the DAC softkey b Connect a multimeter to the rear panel DC CALIBRATOR connector The multimeter should read 0 V 500 µV c Press any key to continue The multimeter should read 5 V 10 mV d Are the DAC voltages correct If ye...

Page 136: ... b Press the Self Tst softkey then press the Display softkey c Do the half bright and full bright squares appear If yes continue with the steps below If not replace the display d Press any key to continue e Do squares appear in the four corners If yes the display is good If not replace the display f Press any key to end the test g If you still have the failing symptom replace the system board Serv...

Page 137: ...at connect the Option 005 board to the system board 2 Verify proper oscilloscope operation as described in this chapter 3 If the oscilloscope passes the performance verification and the malfunction still occurs when the Option 005 board is reconnected then you should replace the Option 005 board Service Troubleshooting the Oscilloscope 4 48 ...

Page 138: ...y sweep board To avoid electrical shock disconnect the power cord from the oscilloscope Wait at least three minutes for the capacitors in the oscilloscope to discharge before you begin disassembling the oscilloscope C AU TI O N Do not replace assemblies with the oscilloscope turned on or damage to the components can occur C AU TI O N ELECTROSTATIC DISCHARGE ESD can damage electronic components Whe...

Page 139: ...crewdriver to remove the optional modules and the pouch 9 16 inch nut driver or wrench to remove BNC nut 1 Remove the oscilloscope from the cabinet a Turn off the oscilloscope and disconnect the power cable b If a module is installed remove it from the oscilloscope c Using the T15 TORX driver remove the two screws from the rear of the cabinet d Using your thumbs gently push on the two rear panel c...

Page 140: ...e retainer tab A and your finger to release retainer tab B See figure on next page Releasing front panel from deck of intrument When tab B is released be careful that the sheet metal tab of front panel ground input clears the softkey circuit board The circuit board may be depressed slightly with a screwdriver to avoid damage to the circuit board 4 Rotate the front panel out until the bottom clears...

Page 141: ...el The front panel swings in to engage the two retainer tabs Before attempting to engage the retainer tabs make sure that the six hooks on top of the front panel are fully engaged with their mating holes in the sheet metal Removing the front panel Tab A Tab B Figure 4 8 Service Replacing Parts in the Oscilloscope 4 52 ...

Page 142: ... 4 As you lift the display rotate it off the two tabs on the side of the deck To remove the system board 1 Using the T10 TORX driver remove the eight screws that hold the system board to the deck two of the screws are in the attenuator covers 2 Remove the two screws from the rear panel interface connector and the nut from the rear panel BNC 3 Disconnect the three ribbon cables and the calibration ...

Page 143: ...t the shaft from the power switch After you disconnect the shaft make sure you position it in the recess along the side of the display bracket Removing the power switch shaft 5 Using the T10 TORX driver remove the screw holding the power supply board to the deck 6 Slide the power supply board towards the front panel about a half an inch Slip the keyhole slots on the power supply board off of the p...

Page 144: ...use the correct parts If longer screws are used they can damage the front panel label 5 Press down on the top of the keyboard and rotate the bottom of the keyboard out When installing the keyboard make sure that the probe calibration cable is kept away from the keyboard cable or noise can occur in the probe adjust signal See figure below for positioning the keyboard cable Positioning the keyboard ...

Page 145: ...scope remove it c Using the T15 TORX driver remove the two screws from the rear of the cabinet d Using your thumbs gently push on the two rear panel connectors to slide the oscilloscope out of the cabinet 2 Remove the faulty Option 005 board a Using a T10 TORX driver remove the two screws that lock the Option 005 board to the chassis b Slide the board back away from the front panel to release it f...

Page 146: ...the defective assembly to Hewlett Packard A United States customer has 30 days to return the defective assembly If you do not return the faulty assembly within the 30 days Hewlett Packard will charge you an additional amount This amount is the difference in price between a new assembly and that of the exchange assembly For orders not originating in the United States contact your nearest Hewlett Pa...

Page 147: ...direct mail order system The advantages to the system are direct ordering and shipment from the HP Parts Center in Mountain View California There is no maximum or minimum on any mail order There is a minimum amount for parts ordered through a local Hewlett Packard Sales Office when the orders require billing and invoicing Transportation costs are prepaid there is a small handling charge for each o...

Page 148: ...Exploded view of oscilloscope Figure 4 11 Service Replacing Parts in the Oscilloscope 4 59 ...

Page 149: ...ine screw M3 X 8 H2 0515 0380 5 Machine screw M4 X 10 H3 0515 0430 5 Machine screw M3 X 6 H4 1250 2075 1 RF connector nut 0 5 inch H5 2190 0068 1 Lock washer MP1 1251 2485 1 Connector dust cover MP2 1400 1581 1 Cable clamp MP3 54600 41901 1 Large keypad HP 54600B and HP 54603B only MP3 54601 41901 1 Large keypad HP 54601B and HP 54602B only MP4 54600 94306 1 Front panel label HP 54600B only MP4 54...

Page 150: ... Power cord option 902 Europe W1 8120 0698 Power cord option 904 250 V USA Canada W1 8120 2296 Power cord option 906 Switzerland W1 8120 2957 Power cord option 912 Denmark W1 8120 4600 Power cord option 917 Africa W1 8120 4754 Power cord option 918 Japan Option 101 Accessory pouch and front panel cover 5041 9411 Pouch 54601 44101 Front panel cover Attenuator covers replacement parts these are a pa...

Page 151: ...Exploded view of Option 005 and related oscilloscope parts Figure 4 12 Service Replacing Parts in the Oscilloscope 4 62 ...

Page 152: ...achine screw M3 X 6 2 screws for Option 005 MP6 54601 00101 1 Deck part of standard instrument MP11 54602 64402 1 Cabinet comes with handle and feet installed replaces standard cabinet MP30 54602 94305 1 Label rear panel video trigger W4 54602 61601 2 RF cable W5 54602 61602 1 Ribbon cable HP 11094B 1 75Ω Termination See the oscilloscope Replaceable Parts table for the HP part number of the A3 Sys...

Page 153: ...4 64 ...

Page 154: ...5 Performance Characteristics ...

Page 155: ...eristics describe the typical performance of the oscilloscope You will notice that some of the characteristics are marked as tested these are values that you can verify with the performance tests under Verifying Oscilloscope Performance on page 4 5 5 2 ...

Page 156: ...03B dc to 60 MHz 3 dB ac coupled 10 Hz to 60 MHz Rise time 3 5 ns calculated HP 54600B HP 54601B 2 33 ns calculated channels 1 2 HP 54602B 1 4 ns calculated channels 3 4 HP 54602B 5 8 ns calculated HP 54603B Dynamic range 32 V or 8 divisions whichever is less Math functions Channel 1 or channel 2 Input resistance 1 MΩ Input capacitance 13 pf Maximum input voltage 400 V dc peak ac 1 Tested see To v...

Page 157: ...ical accuracy 0 4 of full scale Bandwidth limit 20 MHz Coupling Ground ac and dc Inversion Channel 1 and channel 2 CMRR common mode rejection ratio 20 dB at 50 MHz Channels 3 and 4 HP 54601B HP 54602B only Range 0 1 V div and 0 5 V div ranges Accuracy1 1 5 Coupling Ground and dc 1 When the temperature is within 10 C from the calibration temperature 2 Use a full scale of 16 mV for 1 mV div range fo...

Page 158: ...ll scale 200 ps Delay jitter 10 ppm Pretrigger delay negative time 10 divisions Posttrigger delay from trigger point to start of sweep at least 2560 divisions or 50 ms Not to exceed 100 s Delayed sweep operation Main sweep Delayed sweep 5 s div to 10 ms div up to 200 times main sweep 5 ms div and faster up to 2 ns div 1 Use full scale of 50 ns on 2 ns div range 2 Tested see To verify horizontal t ...

Page 159: ... div dc to 250 MHz 1 div or 100 mV chan 3 4 HP 54603B dc to 25 MHz 0 35 div or 3 5 mV dc to 60 MHz 1 div or 10 mV Sources Channels 1 2 3 4 and line on HP 54601B HP 54602B Channels 1 2 line and external on HP 54600B and HP 54603B Coupling ac dc LF reject HF reject and noise reject LF reject and HF reject 3 dB at 50 kHz Modes Auto Autolevel Normal Single and TV TV triggering Available on channels 1 ...

Page 160: ...V dc to 100 MHz 100 mV HP 54603B dc to 25 MHz 50 mV dc to 60 MHz 100 mV Coupling dc HF reject and noise reject Input resistance 1 MΩ Input capacitance 13 pf Maximum input voltage 400 V dc peak ac 1 Tested see To verify trigger sensitivity on page 4 18 Performance Characteristics Trigger System 5 7 ...

Page 161: ...0 kHz Display System Display 7 inch raster CRT Resolution 255 vertical by 500 horizontal points Controls Front panel intensity control Graticule 8 10 grid or frame Autostore Autostore saves previous sweeps in half bright display and the most recent sweep in full bright display Performance Characteristics XY Operation 5 8 ...

Page 162: ...of the number of waveforms being displayed Single shot bandwidth 2 MHz single channel 1 MHz dual channel Peak detect 50 ns glitch capture 100 ns dual channel from 5 s div to 50 µs div Average Number of averages selectable at 8 64 and 256 Roll Mode At sweep speeds of 200 ms div and slower waveform data moves across the display from right to left with no dead time Display can be either free running ...

Page 163: ...al deflections and trigger level forsignals with a frequency 50 Hz duty cycle 1 and voltage level channels 1 and 2 20 mVp p channels 3 and 4 100 mVp p external trigger HP 54600B and HP 54603B only 100 mVp p Save Recall 16 front panel setups Trace memory Two volatile pixel memories Power Requirements Line voltage range 100 Vac to 240 Vac Line voltage selection Automatic Line frequency 45 Hz to 440 ...

Page 164: ...tal specification section 758 paragraphs 4 0 4 1 and 4 2 for class B 1 products Operating 95 relative humidity at 40 C for 24 hours Nonoperating 90 relative humidity at 65 C for 24 hours Altitude Tested to MIL T 28800E paragraph 4 5 5 2 Operating to 4 500 m Nonoperating to 15 000 m EMI EMI commercial CISPR 11 ISM Group 1 class A equipment EMI Meets the requirements in accordance with MIL T 28800D ...

Page 165: ...Part 2 limited to 1 V meter from 14 kHz to 1 GHz with option 001 installed Slight trace shift from 80 MHz to 200 MHz Vibration Operating 15 minutes along each of the 3 major axes 0 635 mm p p displacement 10 Hz to 55 Hz in one minute cycles Held for 10 minutes at 55 Hz 4 g at 55 Hz Shock Operating 30 g 1 2 sine 11 ms duration 3 shocks per axis along major axis Total of 18 shocks Physical character...

Page 166: ... Lines Field 1 Defined as that field with the 3 lines of vertical sync starting at line 4 Is actually color field 1 or color field 3 Field 2 Defined as that field with the 3 lines of vertical sync starting at the midpoint of line 3 Is actually color field 2 or color field 4 All Fields Performance Characteristics Option 005 General Performance Characteristics HP 54602B only 5 13 ...

Page 167: ...ormance remains unchanged Vertical output Connector Rear panel BNC f Source Impedance 50Ω nominal Signal source selected by internal trigger source Amplitude approximately 90mVp p into 50Ω for a full scale display at full bandwidth of the oscilloscope TV Trigger output Connector Rear panel BNC f Amplitude TTL Pulse width a function of TV trigger mode Minimum approximately 5us in line modes to the ...

Page 168: ... display when no signal is applied and the trigger mode is set to auto or auto level BW Lim Bandwidth Limit Limits the displayed bandwidth of the se lected channel to 20 MHz and is available for channels 1 and 2 only This feature is useful for viewing noisy signals Couplng Coupling For the chan nels it changes the input coupling Channels 1 and 2 allow dc ac or ground while channels 3 and 4 allow d...

Page 169: ...ncy reject Adds a high pass filter with a 3 dB point at 50 KHz to the trigger path Line In TV trigger mode the oscil loscope triggers on the TV line sync pulses As a trigger source the oscil loscope triggers off of the power line frequency Main Sets the oscilloscope to a volts vs time display that displays the main time base sweep Mode Allows you to select one of five trigger modes Auto level Auto...

Page 170: ... with either a softkey or the knob closest to the Cursors front panel key Setup Allows access to front panel setup keys Single single shot The oscillo scope triggers once when the trigger conditions are met The oscilloscope must be rearmed before the oscillo scope retriggers by pressing either the Run or Autostore front panel keys Slope Coupling Allows access to the trigger slope and input couplin...

Page 171: ...es the range containing picture information from the range containing synchronizing information IEEE Definition Chrominance That property of light which produces a sensation of color in the human eye apart from any variation in luminance that may be present Chrominance Signal That por tion of the color television signal which contains the color informa tion STOC Definition Color Burst In color sys...

Page 172: ... a frame is divided in interlace scanning alternately one half of a complete picture or frame interval containing all of the odd or all of the even lines of the picture Field 1 Triggers on the field 1 por tion of the video signal Field 2 Triggers on the field 2 por tion of the video signal Frame One complete picture consisting of two fields of interlaced scanning lines HF Reject high frequency rej...

Page 173: ...4 fields for picture completion PAL Phase Alternating Line or Phase Alteration Line rate Color television standards used in Europe A 625 line 50 Hz field system Eight fields for picture completion PAL M Phase Alternating Line or Phase Alteration Line rate A version of the European system adapted to a 525 line 60 Hz field 4 2 MHz band width used in Brazil SECAM SEquentiel Couleur Avec Memoire An ac...

Page 174: ...18 to 21 lines in duration Vertical Interval Reference VIR A signal used as a reference for am plitude and phase characteristics of a color television program FCC as signed to line 19 Vertical Interval Test Signal A signal which may be included dur ing the vertical blanking interval to permit in service testing and adjust ment of video transmission Glossary Glossary 7 ...

Page 175: ...Glossary 8 ...

Page 176: ...nal 3 16 cleaning 1 6 Clear Cursors softkey 2 22 Clear Meas softkey 2 17 clear measurement 2 17 Clear softkey 2 31 color burst 2 41 compensation probe 1 8 complex waveforms 2 12 configuration preset default settings 2 33 connect to instrument s 3 20 coupling 5 14 ac 1 10 1 14 5 4 5 6 5 14 dc 1 10 1 14 5 4 5 6 cursor active 3 12 clear 3 12 time 3 12 voltage 3 12 cursor measurements 2 22 to 2 25 3 1...

Page 177: ... 6 instrument connect to 3 20 interlaced TV system 3 6 internal self tests 4 46 internal trigger 5 6 5 14 interval vertical 3 8 invert 1 11 5 4 IRE 3 12 L labels preset configuration 2 33 level shifts DC 3 16 LF reject 2 29 line trigger 1 14 5 6 5 14 trigger TV 2 41 5 6 5 14 Line softkey Source 1 14 TV 2 38 Load Defaults softkey 4 31 low frequency compensation 4 33 reject 2 29 2 38 5 6 M main swee...

Page 178: ...nts 2 16 to 2 18 sync 3 7 pulse parameters See time measurements R rear panel outputs 3 20 rearming trigger 2 8 Recall Setup softkey 2 31 recall waveforms 2 31 replaceable parts list 4 63 replacement list 4 60 4 63 parts 4 57 reset setup 2 33 reset the instrument 2 33 rise time measurement 2 16 2 18 Rise Time softkey 2 18 Roll mode 1 16 softkey 1 16 Run 2 7 to 2 8 S sample rate 5 9 save setups 2 3...

Page 179: ...eys 1 14 two channel acquisition 2 9 U undo autoscale 2 33 3 4 V vernier accuracy 5 4 to 5 5 horizontal 1 12 5 5 vertical 1 11 Vernier softkey 1 11 to 1 12 Vert Rej 3 7 vertical calibration 4 32 characteristics 5 3 to 5 4 interval 3 7 to 3 8 interval reject 3 7 interval test signal VITS 3 5 3 16 to 3 17 linearity 4 38 reject 3 7 scaling 1 7 1 11 sensitivity 1 11 size 4 38 step size 1 11 sync 2 41 ...

Page 180: ...EN 60555 2 1987 IEC 555 3 1982 A1 1990 EN 60555 3 1987 A1 1991 IEC 801 2 1991 EN 50082 1 1992 4 kV CD 8 kV AD IEC 801 3 1984 EN 50082 1 1992 3 V m 1kHz 80 AM 27 1000 MHz IEC 801 4 1988 EN 50082 1 1992 0 5 kV Sig Lines 1 kV Power Lines Supplementary Information The product herewith complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC Directive 89 336 EEC and carries the...

Page 181: ...1 ISM Group 1 Class A equipment Immunity EN50082 1 Code1 Notes2 IEC 555 2 IEC 555 3 IEC 801 2 ESD 4kV CD 8kV AD IEC 801 3 Rad 3 V m IEC 801 4 EFT 0 5 kV 1kV 1 1 2 2 1 1 Performance Codes 1 PASS Normal operation no effect 2 PASS Temporary degradation self recoverable 3 PASS Temporary degradation operator intervention required 4 FAIL Not recoverable component damage 2 Notes none Sound Pressure Level...

Page 182: ...ecified type normal blow time delay etc should be used Do not use repaired fuses or short circuited fuseholders To do so could cause a shock or fire hazard Service instructions are for trained service personnel To avoid dangerous electric shock do not perform any service unless qualified to do so Do not attempt internal service or adjustment unless another person capable of rendering first aid and...

Page 183: ...er warranty is expressed or implied Hewlett Packard specifically disclaims the implied warranties of merchantability or fitness for a particular purpose Exclusive Remedies The remedies provided herein are the buyer s sole and exclusive remedies Hewlett Packard shall not be liable for any direct indirect special incidental or consequential damages whether based on contract tort or any other legal t...

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