Errata Title & Document Type: 54600/1/2/3B Oscilloscope User & Service Guide Manual Part Number: 54600-97021 Revision Date: November 1997 HP References in this Manual This manual may contain references to HP or Hewlett-Packard. Please note that HewlettPackard's former test and measurement, semiconductor products and chemical analysis businesses are now part of Agilent Technologies. We have made no changes to this manual copy. The HP XXXX referred to in this document is now the Agilent XXXX.
User and Service Guide Publication number 54600-97021 November 1997 (pdf version Nov 1998) For Safety Information, Warranties, and Regulatory information, see the pages behind the index.
General-Purpose Oscilloscopes The HP 54600B-Series Oscilloscopes offer exceptional waveform viewing and measurements in a small, lightweight package. The two-channel HP 54600B and HP 54603B are suited for production, field service, and education applications. The four-channel HP 54601B is best suited for research and design labs, and applications involving digital circuit test and troubleshooting. For higher frequency applications, the HP 54602B provides 150 MHz bandwidth and triggering up to 250 MHz.
Bring your scope and PC together with BenchLink software. BenchLink, which runs under Windows, allows easy transfer of scope traces and waveform data to your PC for incorporation into documents or storage. Accessories supplied • • • • Two 1.5 meter, 10:1 Probes (HP 10071A) Power cord for country of destination This User and Service Guide Programmer’s Guide with Microsoft Windows Help file, ascii help file, and sample programs.
Options available • • • • • • Option 001 RS-03 Magnetic Interference Shielding Added to CRT • • • • • Option 103 Operator’s Training Kit (HP 54654A) iv Option 002 RE-02 Display Shield Added to CRT Option 005 Enhanced TV/Video Trigger (HP 54602B only) Option 090 Deletes Probes Option 101 Accessory Pouch and Front-Panel Cover Option 102 Two Additional HP 10071A 10:1 Probes (HP 54602B only) Option 104 Carrying Case (HP 5041-9409) Option 106 BenchLink/Scope Software (HP 34810B) Option 1CM Rackmount Kit (H
In This Book This manual is the user and service guide for the HP 54600B, HP 54601B, HP 54602B, and HP 54603B Oscilloscopes, and contains five chapters. First Time Users Chapter 1 is a quick start guide that gives you a brief overview of the oscilloscope. Advanced users Chapter 2 is a series of exercises that guide you through the operation of the oscilloscope.
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Contents 1 The Oscilloscope at a Glance To inspect the instrument 1–6 To clean the instrument 1–6 To connect a signal to the oscilloscope To display a signal automatically 1–9 To set up the vertical window 1–10 To set up the time base 1–12 To trigger the oscilloscope 1–14 To use roll mode 1–16 1–7 2 Operating Your Oscilloscope To use delayed sweep 2–3 To use storage oscilloscope 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
Contents 3 Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To select TV display grid 3–4 To autoscale on a video signal 3–4 To trigger on a specific line of video 3–5 To trigger on all TV line sync pulses 3–7 To trigger on a specific field of the video signal 3–8 To trigger on all fields of the video signal 3–9 To trigger on odd or even fields 3–10 To make cursor measurements 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
Contents Adjusting the Oscilloscope 4–27 To adjust the power supply 4–28 To perform the self-calibration 4–31 To adjust the low-frequency compensation 4–33 To adjust the high-frequency pulse response 4–35 To adjust the display 4–37 To adjust the Option 005 offset (R15) (HP 54602B only) Troubleshooting the Oscilloscope 4–39 4–40 To construct 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 4–48 To troubleshoot Op
Contents 5 Performance Characteristics Vertical System 5–3 Horizontal System 5–5 Trigger 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) Option 005 Trigger System (HP 54602B only) 5–14 Glossary Index Contents–4 5–13
1 The Oscilloscope at a Glance
The Oscilloscope at a Glance One of the first things you will want to do with your new oscilloscope is to become acquainted with its front panel. Therefore, we have written the exercises in this chapter to familiarize you with some of its controls. The front panel 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 oscilloscope features.
The Oscilloscope at a Glance Figure 1-1 is a diagram of the front-panel controls and input connectors of the HP 54600B and HP 54603B. Figure 1-2 is a diagram of the front-panel controls and input connectors of the HP 54601B and HP 54602B. Figure 1-3 is a status line example on the HP 54602B. The status line, located at 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 1–2 Storage keys General controls Horizontal controls Trigger controls Channel controls Channel inputs HP 54601B and HP 54602B Front Panel Controls Figure 1–3 Channel 4 is on, 10 V/div Delayed sweep is on, 500 ns/div Main sweep 500 µs/div Autostore is on Channel 3 is off Channel 2 is on, 4 V/div Channel 1 is on, ac coupled, inverted, 100 mV/div HP 54602B Display Status Line Indicators 1–4 Auto triggered, positive slope; trigger source is channel 1 Peak detect is on and operating
Figure 1–4 Press this key To obtain this menu Press this key To obtain this menu Softkey Menu Reference 1–5
The Oscilloscope at a Glance To inspect the instrument To inspect the instrument Inspect the shipping container for damage. Keep a damaged shipping container or cushioning material until the contents of the shipment have been checked for completeness and the instrument has been checked mechanically and electrically. Check the accessories. Accessories supplied with the instrument are listed in "Accessories Supplied" in the front of this manual.
The Oscilloscope at a Glance To connect a signal to the oscilloscope To connect a signal to the oscilloscope The HP 54600B and HP 54603B are a two-channel oscilloscopes with an external trigger input, while the HP 54601B and HP 54602B are four-channel oscilloscopes. The four-channel oscilloscope replaces the external trigger input with channels 3 and 4. In this exercise you connect a signal to the channel 1 input.
The Oscilloscope at a Glance To connect a signal to the oscilloscope You should compensate 10:1 probes to match their characteristics to the oscilloscope. A poorly compensated probe can introduce measurement errors. To compensate a probe, follow these steps. 1 Connect the 10:1 probe from channel 1 to the front-panel probe adjust signal on the oscilloscope. 2 Press Autoscale .
The Oscilloscope at a Glance To display a signal automatically To display a signal automatically The oscilloscope has an Autoscale feature that automatically sets up the oscilloscope to best display the input signal. Using Autoscale requires signals with a frequency greater than or equal to 50 Hz and a duty cycle greater than 1%. When you press the Autoscale key, the oscilloscope turns on and scales all channels that have signals applied, and it selects a time base range based on the trigger source.
The Oscilloscope at a Glance To set up the vertical window To set up the vertical window The following exercise guides you through the vertical keys, knobs, and status line. 1 Center the signal on the display with the Position knob. The Position knob moves the signal vertically, and it is calibrated. Notice that as you turn the Position knob, a voltage value is displayed for a short time indicating how far the ground reference is located from the center of the screen.
The Oscilloscope at a Glance To set up the vertical window 2 Change the vertical setup and notice that each change affects the status line differently. You can quickly determine the vertical setup from the status line in the display. • Change the vertical sensitivity with the Volts/Div knob and notice that it causes the status line to change. For channels 3 and 4 on the HP 54601B and HP 54602B, press 3 or 4 . Then use the softkeys to change the vertical sensitivity. • Press 1 .
The Oscilloscope at a Glance To set up the time base To set up the time base The following exercise guides you through the time base keys, knobs, and status line. 1 Turn the Time/Div knob and notice the change it makes to the status line. The Time/Div knob changes the sweep speed from 2 ns to 5 s in a 1-2-5 step sequence, and the value is displayed in the status line. 2 Change the horizontal setup and notice that each change affects the status line differently. • Press Main/Delayed .
The Oscilloscope at a Glance To set up the time base • Turn the Delay knob and notice that its value is displayed in the status line. The Delay knob moves the main sweep horizontally, and it pauses at 0.00 s, mimicking a mechanical detent. At the top of the graticule is a solid triangle ( ▼ ) symbol and an open triangle ( ∇ ) symbol. The ▼ symbol indicates the trigger point and it moves in conjunction with the Delay knob. The ∇ symbol indicates the time reference point.
The Oscilloscope at a Glance To trigger the oscilloscope To trigger the oscilloscope The following exercise guides you through the trigger keys, knobs, and status line. 1 Turn the trigger Level knob and notice the changes it makes to the display. On the HP 54601B and HP 54602B and on an internally triggered HP 54600B and HP 54603B, as you turn the Level knob or press a trigger menu key, for a short time two things happen on the display. First, the trigger level is displayed in inverse video.
The Oscilloscope at a Glance To trigger the oscilloscope What happens if the oscilloscope loses trigger? If Auto Level is the trigger mode, Auto flashes in the status line. If dc coupled, the oscilloscope resets the trigger level to the center of the signal. If ac coupled, the oscilloscope resets the trigger level to the middle of the screen. (Every time you press the Auto Level softkey, the oscilloscope resets the trigger level.
The Oscilloscope at a Glance To use roll mode To use roll mode Roll mode continuously moves data across the display from right to left. It allows you to see dynamic changes (like adjusting a potentiometer) on low frequency signals. Two frequently used applications are transducer monitoring and power supply testing. 1 Press Mode . Then press the Auto Lvl, Auto, or Normal softkey. 2 Press Main/Delayed . 3 Press the Roll softkey. The oscilloscope is now untriggered and runs continuously.
2 Operating Your Oscilloscope
Operating Your Oscilloscope By now you are familiar with the VERTICAL, HORIZONTAL, and TRIGGER groups of the front-panel keys. You should also know how to determine the setup of the oscilloscope by looking at the status line. If you are unfamiliar with this 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.
Operating Your Oscilloscope To use delayed sweep To use delayed sweep Delayed sweep is a magnified portion of the main sweep. You can use delayed sweep to locate and horizontally expand part of the main sweep for a more detailed (high resolution) analysis of signals. The following steps show you how to use delayed sweep. Notice that the steps are very similar to operating the delayed sweep in analog oscilloscopes. 1 Connect a signal to the oscilloscope and obtain a stable display. 2 Press Main/Delayed .
Operating Your Oscilloscope To use delayed sweep Since both the main and delayed sweeps are displayed, there are half as many vertical divisions so the vertical scaling is doubled. Notice the changes in the status line. • To display the delay time of the delayed sweep, either press Main/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.
Operating Your Oscilloscope To use delayed sweep Figure 2-2 shows the time reference set to center. Notice that the markers expand around 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.
Operating Your Oscilloscope To use storage oscilloscope operation To use storage oscilloscope operation There are four front-panel storage keys. They are white instant action keys that change the operating mode of the oscilloscope. The following steps demonstrate how to use these storage keys. 1 Connect a signal to the oscilloscope and obtain a stable display. 2 Press Autostore . Notice that STORE replaces RUN in the status line.
Operating Your Oscilloscope To use storage oscilloscope operation 3 Using the position knob, move the trace up and down about one division. Notice that the last acquired waveform is in full bright and the previously acquired waveforms are displayed in half bright. • To characterize the waveforms, use the cursors. See "To make cursor measurements" on page 2–22. • To clear the display, press Erase . • To exit the Autostore mode, press either Run or Autostore .
Operating Your Oscilloscope To capture a single event To capture a single event To capture a single event, you need some previous knowledge of the signal in order to set up the trigger level and slope. For example, if the event is derived from TTL logic, a trigger level of 2 volts should work on a rising edge. The following steps show you how to use the oscilloscope to capture a single event. 1 Connect a signal to the oscilloscope. 2 Set up the trigger. • Press • Press Source .
Operating Your Oscilloscope To capture a single event 6 If you need to compare several single-shot events, press Autostore . Like the Run key, Autostore also arms the trigger circuit. When the trigger conditions are met, the oscilloscope triggers. Pressing Autostore again rearms the trigger circuit, but this time the display is not erased. All the data points are retained on the display in half bright with each trigger allowing you to easily compare a series of single-shot events.
Operating Your Oscilloscope To capture glitches or narrow pulses To capture glitches or narrow pulses A glitch is a rapid change in the waveform that is usually narrow as compared to the waveform. This oscilloscope has two modes of operation that you can use for glitch capture: peak detect and Autostore. 1 Connect a signal to the oscilloscope and obtain a stable display. 2 Find the glitch. Use peak detect for narrow pulses or glitches that require sweep speeds slower than 50 µs/div.
Operating Your Oscilloscope To capture glitches or narrow pulses 3 Characterize the glitch with delayed sweep. Peak detect functions in the main sweep only, not in the delayed sweep. To characterize the glitch with delayed sweep follow these 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.
Operating Your Oscilloscope To trigger on a complex waveform To trigger on a complex waveform The difficulty in viewing a complex waveform is triggering on the signal. Figure 2-3 shows a complex waveform that is not synchronized with the trigger. The simplest trigger method is to trigger the oscilloscope on a sync pulse that is associated with the waveform. See "To trigger the oscilloscope" on page 1–14. If there is no sync pulse, use the following procedure to trigger on a periodic complex waveform.
Operating Your Oscilloscope To trigger on a complex waveform Figure 2–3 Stable trigger, but the waveform is not synchronized with the trigger Figure 2–4 Holdoff synchronizes the waveform with the trigger In figure 2-4, the holdoff is set to about 25 µs (the duration of the pattern.
Operating Your Oscilloscope To make frequency measurements automatically To make frequency measurements automatically The automatic measurement capability of the oscilloscope makes frequency measurements easy, as the following steps demonstrate. 1 Connect a signal to the oscilloscope and obtain a stable display. 2 Press Time . A softkey menu appears with six softkey choices. 3 Toggle the Source softkey to select a channel for the frequency measurement. 4 Press the Freq softkey.
Operating Your Oscilloscope To make frequency measurements automatically If the Show Meas softkey is turned on, cursors are displayed on the waveform that show the measurement points for the right-most measurement result. If you select more than one measurement, you can show a previous measurement by reselecting the measurement. • To find the Show Meas softkey, press the Next Menu softkey key. The oscilloscope makes automatic measurements on the first displayed event.
Operating Your Oscilloscope To make time measurements automatically To make time measurements automatically You can measure the following time parameters with the oscilloscope: frequency, period, duty cycle, width, rise time, and fall time. The following exercise guides you through the Time keys by making a rise time measurement. Figure 2-6 shows a pulse with some of the time measurement points. 1 Connect a signal to the oscilloscope and obtain a stable display.
Operating Your Oscilloscope To make time measurements automatically 2 Press Time . A softkey menu appears with six softkey choices. Three of the softkeys are time measurement functions. Source Selects a channel for the time measurement. Time Measurements Three time measurement choices are available: Freq (frequency), Period, and Duty Cy (duty cycle). These measurements are made at the 50% levels. Refer to figure 2-6.
Operating Your Oscilloscope To make time measurements automatically Time Measurements Four additional time measurement choices are available; +Width, −Width, Rise time, and Fall time. Width measurements are made at the 50% levels, whereas rise time and fall time measurements are made at the 10% to 90% levels. Previous Menu Returns to the previous 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.
Operating Your Oscilloscope To make voltage measurements automatically To make voltage measurements automatically You can measure the following voltage parameters automatically with the oscilloscope: peak-to-peak, average, rms, maximum, minimum, top, and 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.
Operating Your Oscilloscope To make voltage measurements automatically 1 Connect a signal to the oscilloscope and obtain a stable display. 2 Press Voltage . A softkey menu appears with six softkey choices. Three of the softkeys are voltage measurement functions. Source Selects a channel for the voltage measurement. Voltage Measurements Three voltage measurement choices are available: Vp-p, Vavg, and Vrms. The measurements are determined by voltage histograms of the signal.
Operating Your Oscilloscope To make voltage measurements automatically Figure 2–10 Delayed sweep isolates an area of interest for an rms voltage measurement 4 Press the Next Menu softkey. Another voltage measurement softkey menu appears with six additional choices. Four of the softkeys are voltage measurement functions. Show Meas (show measurement) Displays the horizontal and vertical cursors that show where the measurement was taken on the signal.
Operating Your Oscilloscope To make cursor measurements To make cursor measurements The following steps guide you through the front-panel Cursors key. You can use the cursors to make custom voltage or time measurements on the signal. Examples of custom measurements include rise time measurements from reference levels other than 10-90%, frequency and width measurements from levels other than 50%, channel-to-channel delay measurements, and voltage measurements.
Operating Your Oscilloscope To make cursor measurements Figure 2–11 Cursors used to measure pulse width at levels other then the 50% points Figure 2–12 Cursors used to measure the frequency of the ringing on a pulse 2–23
Operating Your Oscilloscope To make cursor measurements Figure 2–13 Cursors used to make channel-to-channel delay measurements Figure 2–14 The cursors track delayed sweep. Expand the display with delayed sweep, then characterize the event of interest with the cursors.
Operating Your Oscilloscope To make cursor measurements Figure 2–15 Pressing t1 and t2 softkeys simultaneously causes the cursors to move together when the cursor knob is adjusted. Figure 2–16 By moving the cursors together, you can check for pulse width variations in a pulse train, as figures 2-15 and 2-16 show.
Operating Your Oscilloscope To view asynchronous noise on a signal To view asynchronous noise on a signal The following exercise shows how to use the oscilloscope to view asynchronous noise on a signal 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.
Operating Your Oscilloscope To view asynchronous noise on a signal 2 Press Autostore . Notice that STORE is displayed in the status line. 3 Set the trigger mode to normal, then adjust the trigger level 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.
Operating Your Oscilloscope To reduce the random noise on a signal To reduce the random noise on a signal If the signal you are applying to the oscilloscope is noisy (figure 2-21), you can set up the oscilloscope to reduce the noise on the waveform (figure 2-22). First, you stabilize the displayed waveform by removing the noise from the trigger path. Second, you reduce the noise on the displayed waveform. 1 Connect a signal to the oscilloscope and obtain a stable display.
Operating Your Oscilloscope To reduce the random noise on a signal Low frequency reject (LF reject) adds a high pass filter with the 3-dB point at 50 kHz (see figure 2-20). Use LF reject to remove low frequency signals such as power line noise from the trigger path. Figure 2–20 0 dB 3 dB down point Pass Band dc 50 kHz LF reject Noise reject increases the trigger hysteresis band. By increasing the trigger hysteresis band you reduce the possibility of triggering on noise.
Operating Your Oscilloscope To reduce the random noise on a signal 3 Use averaging to reduce noise on the displayed waveform. To use averaging follow these steps. • Press Display , the press the Average softkey. Notice that Av appears in the status line. • Toggle the # Average softkey to select the number of averages that best eliminates the noise from the displayed waveform.
Operating Your Oscilloscope To save or recall traces To save or recall traces The oscilloscope has two pixel memories for storing waveforms. The following exercise guides you through how to store and recall waveforms from pixel memories. 1 Connect a signal to the oscilloscope and obtain a stable display. 2 Press Trace . A softkey menu appears with five softkey selections. Four of the softkeys are trace memory functions. Trace Selects memory 1 or memory 2. Trace Mem Turns on or off the selected memory.
Operating Your Oscilloscope To save or recall front-panel setups The automatic measurement functions do not operate on stored traces. Remember, the stored waveforms are pictorial information rather than stored data. • If you have not changed the oscilloscope setup, use the cursors to make the measurements. • If you have changed the oscilloscope setup, press the Recall Setup softkey. Then,use the cursors to make the measurements.
Operating Your Oscilloscope To reset the instrument setup To reset the instrument setup 1 To reset the instrument to the default factory-preset configuration, press Setup . 2 Press the Default Setup softkey. 3 To reset the instrument to the configuration that was present before pressing Autoscale, press the Undo Autoscale softkey.
Operating Your Oscilloscope To use the XY display mode To use the XY display mode The XY display mode converts the oscilloscope from a volts versus time display to a volts versus volts display. You can use various transducers so the display could show strain versus displacement, flow versus pressure, volts versus current, or voltage versus frequency. This exercise shows a common use of the XY display mode by measuring the phase shift between two signals of the same frequency with the Lissajous method.
Operating Your Oscilloscope To use the XY display mode XY display mode operating hint Before entering XY display mode, center both channels on screen in the main sweep and adjust sweep speed to obtain greater than or equal to 1 cycle of the lowest frequency input signal on screen. When you select the XY display mode, the time base is turned off. Channel 1 is the X-axis input, channel 2 is the Y-axis input, and channel 4 (external trigger in the HP 54600B and HP 54603B) is the Z-axis input.
Operating Your Oscilloscope To use the XY display mode 6 Move the Y1 and Y2 cursors to the center of the signal. Again, note the ∆Y value. Figure 2–25 Y cursors centered 7 Calculate the phase difference using formula below. sin θ = 2–36 second ∆Y 111.9 = = 27.25 degrees of phase shift. 244.
Operating Your Oscilloscope To use the XY display mode Figure 2–26 Signals are 90° out of phase Figure 2–27 Signals are in phase 2–37
Operating Your Oscilloscope To analyze video waveforms To analyze video waveforms Enhanced TV/Video Trigger (HP 54602B only) This section discusses basic TV video triggering. If you have Option 005 Enhanced TV/Video Trigger installed in your HP 54602B oscilloscope, refer to Chapter 3 "Using Option 005 Enhanced TV/Video Trigger." The TV sync separator in the oscilloscope has an internal clamp circuit. This removes the need for external clamping when you are viewing unclamped video signals.
Operating Your Oscilloscope To analyze video waveforms 5 Set the time base to 200 µs/div, then center the signal on the display with the delay knob (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).
Operating Your Oscilloscope To analyze video waveforms 8 Press Main/Delayed , then press the Main softkey. 9 Use the horizontal vernier to change the time base to 7 µs/div, then center the signal on the display with the delay knob (delay about 989 µs). Figure 2–29 Full screen display 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.
Operating Your Oscilloscope To analyze video waveforms Both-fields triggering hint The HP 54600B-series oscilloscopes can trigger on the vertical sync pulse in both TV fields at the same time. This allows you to view noninterlaced video signals which are common in today’s computer monitors. To trigger on both sync pulses, press Field 1 and Field 2 at the same time.
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3 Using Option 005 Enhanced TV/Video Trigger (HP 54602B)
Using Option 005 Enhanced TV/Video Trigger Basic TV/video triggering This section discusses Enhanced TV/Video triggering. If you do not have Option 005 installed in your oscilloscope, refer to the last section in Chapter 2 "To analyze video waveforms" for basic TV triggering procedures. You can use the Option 005 Enhanced TV/Video trigger with your HP 54602B oscilloscope.
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) Option 005 gives you an Enhanced TV/Video Trigger for the oscilloscope, allowing highly detailed analysis of TV waveforms.
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To select TV display grid To select TV display grid • Press Display , then press the Grid softkey until TV is selected. To autoscale on a video signal 1 Use a cable to connect a TV signal to channel 1. 2 Press Mode in the TRIGGER section of the front panel, and select the Trigger Mode TV softkey. 3 To select a TV standard, press Slope/Coupling in the TRIGGER section of the front panel, then press the Standard softkey to select the TV standard.
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To trigger on a specific line of video To trigger on a specific line of video TV triggering requires greater than 1/4 division of sync amplitude, either channel 1 or channel 2 as the trigger source. Turning the trigger level knob in TV trigger does not change the trigger level because the trigger level is automatically set to the sync pulse tips.
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To trigger on a specific line of video Figure 3-1 Triggering on Line 71 Table 3-1 Line Numbers per Field for Each TV Standard TV Standard NTSC PAL PAL-M SECAM GENERIC Field 1 1 to 263 1 to 313 1 to 313 1 to 313 1 to 1024 Field 2 1 to 262 314 to 625 314 to 625 314 to 625 1 to 1024 Alt Fld 1 to 262 1 to 313 1 to 313 1 to 313 1 to 1024 (Vertical) Line Number Represents Count In GENERIC mode, the line number represents the number of a count instead
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To trigger on all TV line sync pulses To trigger on all TV line sync pulses To quickly find maximum video levels, you could trigger on all TV line sync pulses. When All Lines is selected as the TV trigger mode, the oscilloscope will trigger on the first line that it finds when the acquisition starts. 1 Select the TV display, TV as the trigger mode, and the appropriate TV standard as described in the previous section, "To autoscale on a video signal.
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To trigger on a specific field of the video signal To trigger on a specific field of the video signal To examine the components of a video signal, trigger on either Field 1 or Field 2. When a specific field is selected, the oscilloscope triggers on the rising edge of the first serration pulse in the vertical sync interval in the specified field (1 or 2).
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To trigger on all fields of the video signal To trigger on all fields of the video signal To quickly and easily view transitions between fields, or to find the amplitude differences between the fields, use the All Fields trigger. The oscilloscope will trigger on the first field it finds at the start of acquisition.
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To trigger on odd or even fields To trigger on odd or even fields To check the envelope of your video signals, or to measure worst case distortion, trigger on the odd or even fields. When Field 1 is selected, the oscilloscope triggers on color fields 1 or 3. When Field 2 is selected, the oscilloscope triggers on color fields 2 or 4.
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To trigger on odd or even fields If a more detailed analysis is required, then only one color field should be selected to be the trigger. You can do this by using the oscilloscope’s holdoff control. Using the holdoff settings shown in the following table, the oscilloscope will now trigger on color field 1 OR color field 3 when Field 1 is selected. This is known as odd field selection. Even fields will be selected with Field 2.
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To make cursor measurements To make cursor measurements The following steps guide you through the front-panel Cursors key. You can use the cursors to make custom voltage or time measurements on the signal. Examples of custom measurements include rise time measurements from reference levels other than 10-90%, frequency and width measurements from levels other than 50%, channel-to-channel delay measurements, and voltage measurements.
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To make cursor measurements Figure 3-7 Color Sync measured with the cursors as 40 IRE 3–13
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To use delayed sweep To use delayed sweep Delayed sweep is a magnified portion of the main sweep. You can use delayed sweep to locate and horizontally expand part of the main sweep for a more detailed (high resolution) analysis of signals, for example multi-burst frequencies. The following steps show you how to use delayed sweep. Notice that the steps are very similar to operating the delayed sweep in analog oscilloscopes.
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To use delayed sweep Figure 3-8 Modulated staircase or 5-step, measuring sync pulse fall time with delayed sweep Figure 3-9 Windowed frequency measurement in a multi-burst by use of delayed sweep 3–15
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To analyze video waveforms with Option 005 To analyze video waveforms with Option 005 The combination of the TV trigger, delayed sweep, and automatic measurements allow this oscilloscope to precisely analyze video waveforms. There is no need for external clamping to obtain a stable trigger when you are viewing unclamped video signals. This is because the TV sync separator in the oscilloscope has an internal clamp circuit in the trigger path.
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To analyze video waveforms with Option 005 5 Set the time base to 200 µs/div, then center the signal on the display with the delay knob (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). Figure 3-10 This figure shows the second vertical interval test signals displayed with delayed sweep.
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To window in on harmonic distortion using FFT To window in on harmonic distortion using FFT Sine waves that are not perfectly shaped in the time domain generate harmonics in the frequency domain. Viewing this distortion in the time domain is usually very difficult, unless the waveform is severely distorted. However, in the frequency domain, these harmonics are very apparent.
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To window in on harmonic distortion using FFT The FFT function then shows the harmonic content of the subcarrier in the figure below. Had the time/division and delays controls not been used to zoom in on the desired subcarrier, the entire video signal (with many frequency components) would have appeared in the frequency domain display. These frequency components would have obscured the color subcarrier and its harmonics.
Using Option 005 Enhanced TV/Video Trigger (HP 54602B) To connect to other instruments To connect to other instruments The rear panel outputs provide an easy way to connect your Option 005-equipped oscilloscope to other instruments such as spectrum analyzers or frequency counters. To use a frequency counter: 1 Connect the vertical output of the oscilloscope to the counter’s input. 2 Connect the frequency to be measured to channel 1. 3 Press Autoscale , then select the trigger source to be channel 1.
4 Verifying Oscilloscope Performance 4–5 Adjusting the Oscilloscope 4–27 Troubleshooting the Oscilloscope 4–40 Replacing Parts in the Oscilloscope 4–49 Service
Service If the oscilloscope is under warranty, you must return it to Hewlett-Packard for all service work covered by the warranty. See "To return the oscilloscope to Hewlett-Packard," on page 4–4. If the warranty period has expired, you can still return the oscilloscope to Hewlett-Packard for all service work. Contact your nearest Hewlett-Packard Sales Office for additional details on service work.
Service Table 4-1 Recommended list of test equipment to service the oscilloscope Equipment Constant amplitude signal generator Digital multimeter Oscilloscope Power supply Probe Pulse generator Pulse generator Time marker generator Feedthrough Power splitter Shorting cap Adapter Adapter Adapter Adapter Adapter Cable Cable Critical specifications 100 MHz, Constant amplitude ±1% (250 MHz for HP 54602) 0.1 mV resolution, better than 0.01% accuracy 100 MHz 14 mV to 35 Vdc, 0.
Service To return the oscilloscope to Hewlett-Packard To return the oscilloscope to Hewlett-Packard Before shipping the oscilloscope to Hewlett-Packard, contact your nearest Hewlett-Packard Sales Office for additional details. 1 Write the following information on a tag and attach it to the oscilloscope. • • • • Name and address of owner Model number Serial number Description of service required or failure indications 2 Remove all accessories from the oscilloscope.
Verifying Oscilloscope Performance This section shows you how to verify the electrical performance of the oscilloscope, using the performance characteristics in chapter 5 as the standard. The characteristics checked are dc calibrator, voltage measurement accuracy, bandwidth, horizontal accuracy, and trigger sensitivity. You should verify the performance of the oscilloscope when you first receive it, and every 12 months or after 2,000 hours of operation.
Service Verifying Oscilloscope Performance To check the output of the DC CALIBRATOR In this test you measure the output of the DC CALIBRATOR with a multimeter. The DC CALIBRATOR is used for self-calibration of the oscilloscope. The accuracy is not specified, but it must be within the test limits to provide for accurate self-calibration. Test limits 5.000 V ±10 mV and 0.000 V ± 500 µV. Table 4-2 Equipment Required Equipment Critical specifications Digital Multimeter 0.1 mV resolution, better than 0.
Service Verifying Oscilloscope Performance To verify voltage measurement accuracy In this test you verify the voltage measurement accuracy by measuring the output of a power supply using dual cursors on the oscilloscope, and comparing the results with a multimeter. Test limits ±1.9% of 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.
Service Verifying Oscilloscope Performance 1 Set up the oscilloscope. a Press Setup , then press the Default Setup softkey. b Press Voltage , then press the V avg softkey. c Set the Volts/Div to the first line of table 4-4. d Adjust the channel 1 Position knob to place the baseline near (but not at) the bottom of the display. 2 Press Cursors , then press the V1 softkey. 3 Using the cursors knob, set the V1 cursor on the baseline.
Service Verifying Oscilloscope Performance 6 Press the V2 softkey, then position the V2 cursor to the baseline. The ∆V value at the bottom of the display should be within the test limits of table 4-4. If a result is not within the test limits, see "Troubleshooting the Oscilloscope," on page 4–40. 7 Continue checking the voltage measurement accuracy with the remaining lines in table 4-4.
Service Verifying Oscilloscope Performance To verify bandwidth In this test you verify the bandwidth of the oscilloscope by using a constant amplitude signal generator. The frequency of the signal generator is set to 250 kHz to establish a reference level. Then, the frequency is changed to the upper bandwidth limit and the level is checked to see if it is 3 dB from the reference level. The following procedure is a simple method to check bandwidth.
Service Verifying Oscilloscope Performance 1 Using the 50-Ω feedthrough and the BNC cable, connect the signal generator to channel 1 of the oscilloscope. 2 Set the frequency of the signal generator to 250 kHz and the amplitude to about 800 mV. 3 Press Autoscale . 4 Adjust the output of the signal generator for exactly 8 divisions of vertical deflection. 5 Change the frequency of the signal generator to the value shown below for your instrument.
Service Verifying Oscilloscope Performance To verify bandwidth (alternate method) In this test you verify the bandwidth of the oscilloscope by using a power meter and power sensor to set the output of a signal generator at 1 MHz and the upper bandwidth limit. You use the peak-to-peak voltage at 1 MHz and the upper bandwidth limit to calculate the bandwidth response of the oscilloscope. Test limits HP 54600B and HP 54601B, all channels (−3 dB) dc to 100 MHz ac coupled 10 Hz to 100 MHz.
Service Verifying Oscilloscope Performance 1 Connect the equipment. a Connect the signal generator to the input of the power splitter. b Connect the power sensor to one output of the power splitter, and connect channel 1 of the oscilloscope to the other power splitter output (put the 50 Ω feedthrough at 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.
Service Verifying Oscilloscope Performance 4 Press Voltage , then press the Vp-p softkey. Wait a few seconds for the measurement to settle (averaging is complete), then note the Vp-p reading from the bottom of the display. Vp-p = _______ mV. 5 Set the calibration factor percent of the power meter to the 1 MHz value from the calibration chart on the probe, then press dB (REF) on the power meter to set a 0 dB reference.
Service Verifying Oscilloscope Performance 8 Change the time base to 5 ns/div. Wait a few seconds for the measurement to settle (averaging is complete), then note the Vp-p reading from the bottom of the display. Vp-p = ______ mV. 9 Calculate the response using the following formula. step 8 result 20 log10 step 4 result 10 Correct the result from step 9 with any difference in the power meter reading from step 7. Make sure you observe all number signs. For example Result from step 9 = −2.
Service Verifying Oscilloscope Performance To verify horizontal ∆t and 1/∆t accuracy In this test you verify the horizontal ∆t and 1/∆t accuracy by measuring the output of a time mark generator with the oscilloscope. Test limits ±0.01% ±0.2% of full scale ±200 ps.
Service Verifying Oscilloscope Performance 3 Press Time , then press the Freq and Period softkeys. You should measure the following: Frequency 10 kHz, test limits are 9.959 kHz to 10.04 kHz. Period 100 µs, test limits are 99.59 µs to 100.4 µs. If the measurements are not within the test limits, see "Troubleshooting the Oscilloscope," on page4–40. 4 Change the time mark generator to 1 µs, and change the time base to 200 ns/div. Adjust the trigger level to obtain a stable display.
Service Verifying Oscilloscope Performance To verify trigger sensitivity In this test you verify the trigger sensitivity by applying 25 MHz to the oscilloscope. The amplitude of the signal is decreased to the specified levels, then you check to see if the oscilloscope is still triggered. You then repeat the process at the upper bandwidth limit. Test limits Internal trigger HP 54600B and HP 54601B, all channels dc to 25 MHz, 0.35 div or 3.
Service Verifying Oscilloscope Performance Table 4-10 Equipment Required Equipment Critical specifications Signal generator sine waves: Tek SG 503/Tek TM 501 25 MHz and 100 MHz–HP 54600B/HP 54601B 25 MHz and 250 MHz–HP 54602B 25 MHz and 60 MHz–HP 54603B Power splitter Outputs differ <0.
Service Verifying Oscilloscope Performance Table 4-11 Signal Generator Frequency Setting Selected Channel HP 54600B HP 54601B HP 54602B * HP 54600B 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. b Press Autoscale . c Decrease the output of the signal generator until there is 1 vertical division of the signal displayed. The trigger should be stable.
Service Verifying Oscilloscope Performance External Trig Sensitivity 6 Verify the external trigger sensitivity at 100 MHz (60 MHz for HP 54603B) and 100 mV p-p (HP 54600B and HP 54603B only). a Press Source , then press the Ext softkey. b Use the power splitter to connect the signal generator to the channel 1 input and to the external trigger input. c Change the output of the signal generator to 100 MHz and 200 mV p-p.
Service Verifying Oscilloscope Performance To verify Vertical Output on Option 005 This section applies only to Option 005 Enhanced TV/Video Trigger if installed on the HP 54602B. In this test we will use the oscilloscope’s channel 2 to measure the amplitude of the Vertical Output (VERT OUT connector on rear panel) signal. Test limits: Table 4-8 ~90 mVp-p into 50Ω with a full screen input.
H HP 54600B Performance Test Record Serial No. ______________________________________ Test Interval ____________________________________ Recommended Next Testing _______________________ Output of dc calibrator Date_______________________________________ Test by_____________________________________ Work Order No._______________________________ Temperature _________________________________ Limits 4.990 V to 5.010 V Result __________ Test Limits 34.24 V to 35.76 V 13.70 V to 14.30 V 6.848 V to 7.152 V 3.
H Serial No. ______________________________________ Test Interval ____________________________________ Recommended Next Testing _______________________ Output of dc calibrator Voltage measurement accuracy Range Reading 5 V/Div 35 V 2 V/Div 14 V 1 V/Div 7V 500 mV/Div 3.5 V 200 mV/Div 1.
H Serial No. ______________________________________ Test Interval ____________________________________ Recommended Next Testing _______________________ Output of dc calibrator Voltage measurement accuracy Range Reading 5 V/Div 35 V 2 V/Div 14 V 1 V/Div 7V 500 mV/Div 3.5 V 200 mV/Div 1.
H HP 54603B Performance Test Record Serial No. ______________________________________ Test Interval ____________________________________ Recommended Next Testing _______________________ Output of dc calibrator Date_______________________________________ Test by_____________________________________ Work Order No._______________________________ Temperature _________________________________ Limits 4.990 V to 5.010 V Result _________ Test Limits 34.04 V to 35.96 V 13.62 V to 14.38 V 6.808 V to 7.192 V 3.
Adjusting the Oscilloscope This section explains how to adjust the oscilloscope so that it is at optimum operating performance. You should perform the hardware adjustments periodically as indicated below.
Service Adjusting the Oscilloscope To adjust the power supply On the power supply there is only one adjustment and that is for the +5.1 V. The other voltages are based on the +5.1 V adjustment. In this procedure you use a multimeter to measure the +5.1 V, and if necessary, you adjust the supply to within tolerance. Table 4-12 Equipment Required Equipment Critical specifications Recommended Model/Part Digital multimeter 0.1 mV resolution, accuracy ±0.
Service Adjusting the Oscilloscope 2 Measure the power supply voltages at L1, L2, and L3 on the system board. The test points are not marked on the system board; see figure below for location 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.
Service Adjusting the Oscilloscope If the +5.1 V measurement is out of tolerance, adjust the +5.1 V adjustment on the power supply. The ±15.75 V supplies are 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. Figure 4–2 +5.
Service Adjusting the Oscilloscope To perform the self-calibration In this procedure you load the default calibration factors to give a known starting point for the firmware calibration. However, once the default calibration factors are loaded, you must perform the remainder of the firmware calibration to maintain the accuracy of the oscilloscope.
Service Adjusting the Oscilloscope Vertical self cal 3 After the message "Default calibration factors loaded" is displayed on the lower left side of the display, press the Vertical softkey. 4 Follow the instructions on the display, then press the Continue softkey. The display prompts instruct you to connect the rear panel DC CALIBRATOR output first to channel 3, then to channel 1, then to channel 4, and finally to channel 2. (Channels 1 and 2 only on the HP 54600B and HP 54603B.
Service Adjusting the Oscilloscope To adjust the low-frequency compensation In this procedure you adjust the low-frequency compensation adjustment for each channel. Table 4-15 Equipment Required Equipment Critical specifications Recommended Model/Part Square wave generator 30 kHz at about 3 Vp-p HP 8112A Feedthrough 50 Ω, BNC (m) and (f) HP10100C Cable BNC HP 10503A 1 Turn off the oscilloscope and disconnect the power cord. 2 Remove the cover from the oscilloscope.
Service Adjusting the Oscilloscope 9 Adjust the channel 1 low-frequency compensation adjustment for 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).
Service Adjusting the Oscilloscope To adjust the high-frequency pulse response In this procedure you adjust the high-frequency pulse response for each channel. Table 4-16 Equipment Required Equipment Critical specifications Recommended Model/Part Pulse generator Rise time < 875 ps PSPL 1107B TD and PSPL 1110B Driver Adapter 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.
Service Adjusting the Oscilloscope 9 Adjust the channel 1 high-frequency response for 1.5 minor division of overshoot (6%). 10 Repeat steps 4 through 9 for channel 2 (channels 2 to 4 on the HP 54601B and HP 54602B).
Service Adjusting the Oscilloscope To adjust the display When to adjust the display The display adjustments are optional and normally do not require adjustment. You should use this procedure only for the few cases when the display is obviously out of adjustment. Table 4-16 Equipment Required 1 2 3 4 5 6 7 8 9 10 Equipment Critical specifications Recommended Model/Part Digital multimeter Accuracy ±0.05%, 1 mV resolution HP 34401A Turn off the oscilloscope and disconnect the power cord.
Service Adjusting the Oscilloscope 11 Adjust HB Cont (half bright contrast) for the best contrast between the half bright and full bright blocks. You can readjust Sub Bri, intensity control, and HB Cont to suit your individual preference. 12 Press any key to continue to the next test pattern. Then, adjust H.Hold (horizontal hold) to center the display horizontally. 13 Adjust Focus for the best focus. 14 Press any key to continue to the normal display pattern. Then adjust V.
Service Adjusting the Oscilloscope To adjust the Option 005 offset (R15) (HP 54602B only) The oscilloscope must be calibrated before performing this adjustment. Refer to "To perform the self-calibration" on page 4–31. Table 4-17 Equipment Required Equipment Required Critical Specification Digital Multimeter Adapter 0.1 mV resolution, accuracy ±0.05% BNC (m) to dual banana post Recommended Model/Part HP 34401A HP 10110B 1 Set up the oscilloscope for the voltage adjustment.
Troubleshooting the Oscilloscope The service policy for this instrument is replacement of defective assemblies. The following procedures can help isolate problems to the defective assembly. WARNING CAUTION CAUTION 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.
Service Troubleshooting the Oscilloscope To construct your own dummy load 1 Obtain a connector compatible with the connector on the Low Voltage Power Supply. 2 Connect the following load resistors to the connector. +5.1 V requires a 3 A load, 1.7 Ω and 15 W on pin 15, 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.
Service Troubleshooting the Oscilloscope To check out the oscilloscope 1 Is there an interface module connected to the oscilloscope? If yes, do the following steps. If not, go to step 2. a Turn off the oscilloscope. b Remove the module. c Turn on the oscilloscope, then check for the failing symptom. If the failing symptom disappears, replace the module. If not, go to step 2. 2 Disconnect any external cables from the front panel. 3 Disconnect the power cord, then remove the cover.
Service Troubleshooting the Oscilloscope 5 Disconnect the display cable, then check the following signals on the system board. Table 4-18 Signals at U56 Signal Frequency Pulse width Voltage U16 Pin 7 DE 19.72 kHz 38.0 µs 2.6 Vp-p U16 Pin 24 Hsync 19.72 kHz 3.0 µs 5.0 Vp-p U9 Pin 2 Vsync 60.00 Hz 253.5 µs 5.2 Vp-p If the signals are good, replace the display assembly. If not, replace the system board. 6 Disconnect the Low Voltage Power Supply ribbon cable from the display board.
Service Troubleshooting the Oscilloscope 8 Is the fan running? If yes, go to "To run the internal self-tests," on page 4–46. If not, do the steps below. The Low Voltage Power Supply has a thermal cut-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.
Service Troubleshooting the Oscilloscope To check the Low Voltage Power Supply 1 Disconnect the power cord, then set the oscilloscope on its side. 2 Connect the negative lead of the multimeter to a ground point on the oscilloscope. Connect the power cord and turn on the oscilloscope. 3 Measure the power supply voltages at L1, L2, and L3 on the system board. Table 4-19 Power Supply 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.
Service Troubleshooting the Oscilloscope To run the internal self-tests 1 Perform the keyboard test. a Press Print/Utility . b Press the Self Tst softkey, then press the Keyboard softkey. A pictorial diagram of the front panel will appear on the display. c Press each key, and notice that when you press a key a corresponding block on the display fills in. d Rotate the knobs (except the intensity) and notice that an arrow appears on the display that points in the direction you rotate the knob.
Service Troubleshooting the Oscilloscope 4 Perform the RAM test. a Press the RAM softkey. b Does the display message say Test Passed? If yes, press any key to continue. If not, (the display message says Test Failed) replace the system board. 5 Perform the display test. a Press Print/Utility . 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.
Service Troubleshooting the Oscilloscope To troubleshoot Option 005 (HP 54602B only) To isolate a malfunction to the Option 005 board, do the following: 1 Disconnect the three cables that 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.
Replacing Parts in the Oscilloscope This section contains instructions for removing and ordering replaceable assemblies. Also in this section is a parts list for the assemblies and hardware of the oscilloscope that you can order from Hewlett-Packard. Before working on the oscilloscope, read the safety summary at the back of this book. WARNING CAUTION CAUTION Hazardous voltages are on the CRT, power supply, and display sweep board.
Service Replacing Parts in the Oscilloscope To replace an assembly Refer to the exploded view of the oscilloscope, figure 4–11 (figure 4–12 for Option 005 board), for details on how the oscilloscope fits together. To install an assembly, follow the instructions in reverse order. You will need the following tools to disassemble the oscilloscope: • T15 TORX driver to remove the oscilloscope from the cabinet and to remove the fan. • T10 TORX driver to remove the assemblies from the deck.
Service Replacing Parts in the Oscilloscope To remove the fan 1 Disconnect the fan cable from the power supply board. 2 Using the T15 TORX driver, remove the three screws that hold the fan to the deck. To remove the front panel 1 Remove the intensity knob by pulling straight out. 2 Disconnect the keyboard ribbon cable from the system board. 3 Use a screwdriver to release retainer tab A, and your finger to release retainer tab B. See figure on next page.
Service Replacing Parts in the Oscilloscope When installing the front panel, make sure that the power switch shaft is aligned with its mating hole in the front panel. 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.
Service Replacing Parts in the Oscilloscope To remove the display 1 Remove the front panel. 2 Disconnect the ribbon cable and the calibration cable from the display. 3 Using the T10 TORX driver, remove the two screws that hold the display to the deck. Make sure that when you reinstall these screws that you use the correct parts. If longer screws are used, they can short the system board to ground. 4 As you lift the display, rotate it off the two tabs on the side of the deck.
Service Replacing Parts in the Oscilloscope Power supply 1 Remove the fan. 2 Disconnect the ground wire (green wire with the yellow stripe) from the deck. 3 Disconnect the ribbon cable from the power supply board. 4 Use a screw driver to gently unhook the latch that holds the white shaft to the power switch, then disconnect 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.
Service Replacing Parts in the Oscilloscope Keyboard 1 Remove the front panel. 2 Remove all the knobs by pulling straight out. 3 Flex the bezel of the front panel to unsnap the small keyboard under the display opening. 4 Using the T10 TORX driver, remove the three screws from the large keyboard. Make sure that when you reinstall these screws that you use the correct parts. If longer screws are used, they can damage the front-panel label.
Service Replacing Parts in the Oscilloscope To remove the handle • Rotate the handle down until it is just past the last detent position (about 1/2 inch before the handle touches the bottom of the oscilloscope), then pull the sides of the handle out of the cabinet. To remove the Option 005 board 1 Remove the oscilloscope from the cabinet. a Turn off the oscilloscope and disconnect the power cable. b If a module is installed in the oscilloscope, remove it.
Service Replacing Parts in the Oscilloscope To order a replacement part The system board is part of an exchange program with Hewlett-Packard. The exchange program allows you to exchange a faulty assembly with one that has been repaired and performance verified by Hewlett-Packard. After you receive the exchange assembly, return the defective assembly to Hewlett-Packard. A United States customer has 30 days to return the defective assembly.
Service Replacing Parts in the Oscilloscope • To order a part in the material list, quote the Hewlett-Packard part number, indicate the quantity desired, and address the order to your nearest Hewlett-Packard Sales Office. • To order a part not listed in the material list, include the model number and serial number of the oscilloscope, a description of the part (including its function), and the number of parts required. Address the order to your nearest Hewlett-Packard Sales Office.
Service Replacing Parts in the Oscilloscope Figure 4–11 Exploded view of oscilloscope 4–59
Service Replacing Parts in the Oscilloscope Table 4-20 Replaceable Parts Reference Designator A1 A2 HP Part Number 0950-2125 2090-0316 Qty Description 1 1 Power supply assembly Display assembly A3 A3 A3 A3 54600-66506 54600-69506 54601-66506 54601-69506 1 System board (HP 54600B only) Exchange system board (HP 54600B only) System board (HP 54601B only) Exchange system board (HP 54601B only) A3 A3 A3 A3 54602-66506 54602-69506 54603-66506 54603-66506 1 A4 A4 54600-66502 54601-66502 1 1 Keyb
Service Replacing Parts in the Oscilloscope Reference Designator HP Part Number Qty Description MP8 MP9 MP10 MP11 MP12 54601-41902 54645-42202 54601-43701 54601-64401 54601-44901 1 1 1 1 1 Small rubber keypad Front panel Power-switch shaft Cabinet (comes with handle and feet installed) Handle MP13 MP14 MP15 MP16 MP17 54601-47401 54601-47402 54601-47403 54601-47404 5081-7741 7 3 1 1 1 Small knob (HP 54600 has 6) Large knob Intensity knob Small knob (dark) Safety shield sheet W1 W1 W1 W1 W1 8120
Service Replacing Parts in the Oscilloscope Figure 4-12 Exploded view of Option 005 and related oscilloscope parts 4–62
Service Replacing Parts in the Oscilloscope Table 4-21 Option 005 Replaceable Parts Reference Designator A3 A5 HP Part Number * 54602-66502 Qty Description 1 1 System Board (part of standard instrument) Video Trigger Board H2 H3 0515-0380 0515-0430 5 7 Machine screw M4 X 10 (part of standard instrument) Machine screw M3 X 6 (+2 screws for Option 005) MP6 MP11 54601-00101 54602-64402 1 1 MP30 54602-94305 1 Deck (part of standard instrument) Cabinet (comes with handle and feet installed – repl
4–64
5 Performance Characteristics
Performance Characteristics The performance characteristics 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.
Performance Characteristics Vertical System Vertical System All channels Bandwidth1 HP 54600B and HP 54601B dc to 100 MHz −3 dB ac coupled, 10 Hz to 100 MHz –3 dB HP 54602B dc to 100 MHz −3 dB (1, 2, & 5 mV/div) dc to 150 MHz −3 dB (channels 1 & 2) dc to 250 MHz −3 dB (channels 3 & 4) ac coupled, 10 Hz to 150 MHz –3 dB (channels 1 & 2) HP 54603B 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.
Performance Characteristics Vertical System Channels 1 and 2 Range 2 mV/div to 5 V/div (lower limit is 1 mV/div for the HP 54602B) Accuracy1 ±1.9% (HP 54600B, HP 54601B, and HP 54602B) ±2.4% (HP 54603B) Verniers1 Fully calibrated, accuracy about ±3.5% Cursor accuracy1, 2, 3 Single cursor accuracy vertical accuracy ±1.2% of full scale ±0.5% of position value (HP 54602B at <10 mV/div: vertical accuracy ±2.4% of full scale ±0.5% of position value) Dual cursor accuracy vertical accuracy ±0.
Performance Characteristics Horizontal System Horizontal System Sweep speeds 5 s/div to 2 ns/div main and delayed (HP 54600B, HP 54601B, HP 54602B 5 s/div to 5 ns/div main and delayed (HP 54603B) Accuracy ±0.01% ±0.2% of full scale ±200 ps Vernier Accuracy ±0.05% Horizontal resolution 100 ps Cursor accuracy1,2 (∆t and 1/∆t) ±0.01% ±0.
Performance Characteristics Trigger System Trigger System Internal trigger Sensitivity1 HP 54600B dc to 25 MHz dc to 100 MHz HP 54601B dc to 25 MHz dc to 100 MHz HP 54602B dc to 25 MHz 0.35 div or 3.5 mV 1 div or 10 mV 0.35 div or 3.5 mV 1 div or 10 mV 0.35 div or 3.5 mV (>5 mV/div) 1.0 div or 2 mV (1, 2, or 5 mV/div) 25 MHz to 100 MHz 1.5 div or 3 mV (1, 2, or 5 mV/div) dc to 150 MHz 1 div or 10 mV (chan 1&2)(>5 mV/div) dc to 250 MHz 1 div or 100 mV (chan 3&4) HP 54603B dc to 25 MHz 0.35 div or 3.
Performance Characteristics Trigger System External trigger (HP 54600B and HP 54603B only) Range ±18 V Sensitivity1 HP 54600B dc to 25 MHz 50 mV 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 XY Operation XY Operation Z Blanking TTL high blanks trace Bandwidths X and Y same as vertical system Phase difference ±3 degrees at 100 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 Acquisition System Acquisition System Maximum sample rate 20 MSa/s Resolution 8 bits Simultaneous channels Channels 1 and 2 or channels 3 and 4 Record length Vectors off 4,000 points Vectors on and/or single shot 2,000 points Maximum update rate Vectors off 1,500,000 points/sec Vectors on 60 full screens/sec, independent 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)
Performance Characteristics Advanced Functions Advanced Functions Automatic measurements (measurements are continuously updated) Voltage Vavg, Vrms, Vp-p, Vtop, Vbase, Vmin, Vmax Time Frequency, period, + width, − width, duty cycle, rise time, and fall time Cursors Manually or automatically placed Setup functions Autoscale Sets vertical and horizontal 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,
Performance Characteristics General General Environmental characteristics The instrument meets or exceeds the environmental requirements of MIL-T-28800D for Type III, Class 3, Style D equipment as described below. Ambient temperature (Tested to MIL-T-28800D paragraphs 4.5.5.13 option 2 and 4.5.5.14) Operating –10 °C to +55 °C Nonoperating –51 °C to +71 °C Humidity (tested to Hewlett-Packard environmental specification section 758 paragraphs 4.0, 4.1, and 4.
Performance Characteristics General RE01 Parts 5 and 6 measured at 30.5 cm, 15 dB relaxation to 20 kHz, and exceptioned from 20 kHz to 50 kHz.
Performance Characteristics Option 005 General Performance Characteristics (HP 54602B only) Option 005 General Performance Characteristics (HP 54602B only) Video Standards Video Trigger Modes NTSC PAL PAL-M SECAM Generic Line (number) of Field 1 Field 2 Alternate Fields All 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.
Performance Characteristics Option 005 Trigger System (HP 54602B only) Option 005 Trigger System (HP 54602B only) Internal trigger Sensitivity Performance remains unchanged Coupling Performance remains unchanged Modes Performance remains unchanged Holdoff Performance remains unchanged TV triggering Available on channels 1 and 2 only TV line and field 0.
Glossary This glossary is organized into two parts: oscilloscope and TV/video trigger terms. The TV/video trigger terms apply to the HP 54602B with Option 005 installed. Oscilloscope Terms Auto A trigger mode that produces a baseline display if the trigger conditions are not met. If the trigger frequency is less than 25 Hz, even if the level and slope conditions are met, a free running display will result.
Glossary External Trigger Is available only on the two channel oscilloscope. Nonviewable input that is usable as a trigger source only. Field 1 Triggers on the field 1 portion of the video signal. Field 2 Triggers on the field 2 portion of the video signal. HF Reject (high frequency reject) Adds a low pass filter with a 3 dB point at 50 KHz to the trigger path. Holdoff Keeps the trigger from rearming for an amount of time set by the holdoff knob.
Glossary Print/Utility Allows access to the module menus and service menus. Probe Allows selection of 1, 10, or 100 to match a probe’s division ratio so that the vertical scaling and voltage measurements reflect the actual voltage levels at the tip of the probe. Recall Recalls a selected frontpanel setup that you saved to one of 16 memory location. Memory selection is with either a softkey or the knob closest to the Cursors frontpanel key.
Glossary Trace Allows access to the trace storage keys. Trace Mem (trace memory) One of two pixel memory locations used for storing traces. TV Allows access to the TV slope and trigger coupling keys. Vernier Vernier allows a calibrated fine adjustment with the channel 1 and 2 Volts/Div knob, and the time base Time/Div knob. Voltage Allows access to the automatic voltage measurement keys. Volts/Div Changes the vertical scaling in a 1-2-5 step sequence from 2 mV to 5 V.
Glossary Composite Video For color, this consists of blanking, field, and line synchronizing signals, color synchronizing signals, plus chrominance and luminance picture information. These are all combined to form the complete color video signal. Equalizing Pulses Pulses of one half the width of the horizontal sync pulses which are transmitted at twice the rate of the horizontal sync pulses during the portions of the vertical blanking interval immediately preceding and following the vertical sync pulse.
Glossary Line In TV trigger mode, the oscilloscope triggers on the TV line sync pulses. As a trigger source, the oscilloscope triggers off of the power line frequency. 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. Luminance The amount of light intensity, which is perceived by the eye as brightness (referred to as "Y") PAL-M Phase Alternating Line or Phase Alteration Line rate.
Glossary Vertical Blanking Interval The blanking portion at the beginning of each field. It contains the equalizing pulses, the vertical sync pulses, and VITS (if desired). Presently 18 to 21 lines in duration. Vertical Interval Reference (VIR) A signal used as a reference for amplitude and phase characteristics of a color television program (FCC assigned to line 19).
Glossary–8
Index A ac coupling, 1–10, 1–14, 5–4, 5–6 accuracy cursors, 5–4 to 5–5 horizontal, 5–5 vertical, 5–4 acquisition characteristics, 5–9 Active Cursor, 2–22 adjustments display, 4–37 to 4–38 high frequency, 4–27 to 4–39 low frequency, 4–27 to 4–39 power supply, 4–28 to 4–29 advance functions, 5–10 All Fields, 3–9 Alt Fld See alternate fields alternate fields, 3–5 altitude characteristics, 5–11 ambient temperature, 4–27, 5–11 assembly replacement, 4–50 Auto, 1–15 auto level, 1–15 Auto Level softkey, 1–15 Auto
Index F fall time, 2–16, 2–18 Fast Fourier Transform (FFT), 3–18 to 3–19 Field 1, 3–8 Field 1 softkey, 2–38 Field 2, 3–8 Field 2 softkey, 2–38 fields all, 3–9 alternate, 3–5 even, 3–10 to 3–11 Field 1, 3–5, 3–10 to 3–11 Field 2, 3–5, 3–10 to 3–11 Field 3, 3–10 to 3–11 Field 4, 3–10 odd, 3–10 to 3–11 firmware calibration, 4–31 Freq softkey, 2–14 frequencies multi-burst, 3–14 frequency measurements, 2–14 to 2–15, 2–17 reject, 2–28 to 2–29, 2–38, 5–6 frequency domain, 3–18 to 3–19 frequency domain analysis, 3
Index O odd field, 3–10 to 3–11 offset adjusting option 005, 4–39 one-channel acquisition, 2–9 Option 005, 3–2 characteristics, 5–13 offset adjustment, 4–39 replacing circuit board, 4–56 trigger system characteristics, 5–14 triggering, 3–5 troubleshooting, 4–48 verifying Vertical Output, 4-22 oscilloscope configuration preset, 2–33 preset configuration, 2–33 oscilloscope maintenance, 4–5 to 4–21 output vertical, 3–20 outputs rear panel, 3–20 P PAL, PAL-M, 3–4, 3–6, 3–11 Peak Det softkey, 2–10 peak detect,
Index time base accuracy, 5–5 preset configuration, 2–33 range, 1–12, 5–5 setup, 1–12 to 1–13 time cursor, 3–12 time domain, 3–18 to 3–19 Time key, 2–14 time measurements duty cycle, 2–16 to 2–18 fall time, 2–16 to 2–18 frequency, 2–16 to 2–18 period, 2–16 to 2–18 rise time, 2–16 to 2–18 width, 2–16 to 2–18 time reference, 2–4 Time/Div, 2–3, 3–14 trace memory, 2–31 recall, 2–31 softkey, 2–31 to save, 2–31 Trace Mem softkey, 2–31 trigger characteristics, 5–6, 5–14 complex waveforms, 2–12 external, 1–7, 1–15
DECLARATION OF CONFORMITY according to ISO/IEC Guide 22 and EN 45014 Manufacturer’s Name: Hewlett-Packard Company Manufacturer’s Address: Colorado Springs Division 1900 Garden of the Gods Road Colorado Springs, CO 80907 USA declares, that the product Product Name: Digitizing Oscilloscope Model Number(s): HP 54600B, HP 54601B, HP 54602B, and HP 54603B Product Option(s): All conforms to the following Product Specifications: Safety: IEC 1010-1:1990+A1 / EN 61010-1:1993 UL 3111 CSA-C22.2 No. 1010.
Product Regulations Safety IEC 1010-1:1990+A1 / EN 61010-1:1993 UL 3111 CSA-C22.2 No.1010.1:1993 EMC This Product meets the requirement of the European Communities (EC) EMC Directive 89/336/EEC. Emissions EN55011/CISPR 11 (ISM, Group 1, Class A equipment) Immunity EN50082-1 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 Sound Pressure Level Code1 Notes2 1 1 2 2 1 1 Performance Codes: 1 PASS - Normal operation, no effect.
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