Agilent Technologies 54610B User's And Service Manual
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Agilent Technologies 54610B User's And Service Manual

Agilent Technologies 54610B User's And Service Manual

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User and
Service Guide
Publication number 54610-97018
August 2000
For Safety Information, Warranties, and Regulatory information,
see the pages behind the index.
© Copyright Agilent Technologies 1993, 1994, 2000
All Rights Reserved
Agilent 54610B
Oscilloscope

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Summary of Contents for Agilent Technologies 54610B

  • Page 1 User and Service Guide Publication number 54610-97018 August 2000 For Safety Information, Warranties, and Regulatory information, see the pages behind the index. © Copyright Agilent Technologies 1993, 1994, 2000 All Rights Reserved Agilent 54610B Oscilloscope...
  • Page 2 A General-Purpose Oscilloscope The Agilent 54610B oscilloscope offers exceptional waveform viewing and measurements in a small, lightweight package. This dual channel, 500 MHz bandwidth oscilloscope is designed for use in labs where high speed analog and digital circuits are being tested. This oscilloscope gives you: •...
  • Page 3 Accessories supplied • Two 1.5 meter, 10:1 Rugged 500 MHz Probes (10073B) • Power cord for country of destination • This User and Service Guide Accessories available • 34810B BenchLink Software • 54650A GPIB Interface Module • 54652B /Parallel/RS-232 Interface Module •...
  • Page 4 Options available • Option 001 RS-03 Magnetic Interference Shielding Added to CRT • Option 002 RE-02 Display Shield Added to CRT • Option 005 Enhanced TV/Video Trigger • Option 101 Accessory Pouch and Front-Panel Cover • Option 103 Operator’s Training Kit (54654A) •...
  • Page 5 In This Book This book is the operating and service manual for the Agilent 54610B oscilloscope, and contains four 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.

  • Page 7: Table Of Contents

    Contents 1 The Oscilloscope at a Glance To connect a signal to the oscilloscope 1–5 To display a signal automatically 1–7 To set up the vertical window 1–8 To set up the time base 1–10 To trigger the oscilloscope 1–12 To use roll mode 1–15 2 Operating Your Oscilloscope To use delayed sweep 2–3...
  • Page 8 Contents To verify bandwidth 3–10 To verify horizontal ∆t and 1/∆t accuracy 3–14 To verify trigger sensitivity 3–17 Adjusting the Oscilloscope 3–21 To adjust the power supply 3–22 To perform the self-calibration 3–24 To adjust the high-frequency pulse response 3–26 To adjust the display 3–28 Troubleshooting the Oscilloscope 3–30 To construct your own dummy load 3–31...

  • Page 9: The Oscilloscope At A Glance

    The Oscilloscope at a Glance...
  • Page 10 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 the controls you will use most often.
  • Page 11 Figure 1-1 Storage keys General controls Trigger controls Channel External trigger controls control External Channel trigger input inputs Horizontal Front Panel Controls controls Figure 1-2 Delayed sweep is on, 500 ns/div Main sweep 500 ms/div Autostore is on Auto triggered, positive slope;...
  • Page 12 Figure 1-3 Press this key To obtain this menu Press this key To obtain this menu Softkey Menu Reference...

  • Page 13: To Connect A Signal To The Oscilloscope

    To connect a signal to the oscilloscope To connect a signal to the oscilloscope The Agilent 54610B is a two-channel, 500 MHz bandwidth oscilloscope with an external trigger input. The input impedance of this oscilloscope is selectable--either 50Ω or 1 MΩ. The 50Ω mode matches 50Ω cables commonly used in making high frequency measurements.
  • Page 14 The Oscilloscope at a Glance To connect a signal to the oscilloscope • If you are not using automatic probe sensing, then follow these next two steps. • To set the input impedance, press . Select the desired Input Ω Ω...

  • Page 15: To Display A Signal Automatically

    If a signal is connected to the external trigger input on the Agilent 54610B, then it is selected as the trigger source. Autoscale will, in both 50Ω and 1MΩ impedance modes, reset the Coupling to DC, the Bandwidth Limit (BW Lim) to Off, all Verniers to Off, and Signal Inversion (Invert) to Off.

  • Page 16: To Set Up The Vertical Window

    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. Center the signal on the display with the Position knob. The Position knob moves the signal vertically, and it is calibrated.
  • Page 17 The Oscilloscope at a Glance To set up the vertical window 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.

  • Page 18: To Set Up The Time Base

    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. Turn the Time/Div knob and notice the change it makes to the status line.
  • Page 19 The Oscilloscope at a Glance To set up the time base 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 calibrated, which results in accurate measurements even with the vernier turned on.

  • Page 20: To Trigger The Oscilloscope

    Toggle each of the softkeys and notice that each key causes the status line to change. The Agilent 54610B has a viewable external trigger, which is useful for making timing measurements. It is also useful for ensuring that the trigger level is not set to a value that results in trigger instability which causes display to appear unstable.
  • Page 21 The Oscilloscope at a Glance To trigger the oscilloscope • Press Mode A softkey menu appears on the display with five trigger mode choices. • Toggle the Single and TV softkeys and notice that they affect the status line differently. (You can only select TV if the trigger source is either channel 1 or 2.) When the oscilloscope is triggering properly, the trigger mode portion of the status line is blank.
  • Page 22 Toggle each of the softkeys and notice which keys affect the status line. • On the Agilent 54610B, the external trigger input is selectable as ac or dc coupled or ground. Adjust the Holdoff knob and observe how it changes the display.

  • Page 23: To Use Roll Mode

    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. Roll mode allows you to see dynamic changes on low frequency signals, such as when you adjust a potentiometer. Two frequently used applications of roll mode are transducer monitoring and power supply testing.
  • Page 24 1-16...

  • Page 25: Operating Your Oscilloscope

    Operating Your Oscilloscope...
  • Page 26 Operating Your Oscilloscope By now you are familiar with the , and VERTICAL, HORIZONTAL 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."...

  • Page 27: To Use Delayed Sweep

    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.
  • Page 28 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 or turn the delay knob.
  • Page 29 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.

  • Page 30: To Use Storage Oscilloscope Operation

    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. Connect a signal to the oscilloscope and obtain a stable display.
  • Page 31 Operating Your Oscilloscope To use storage oscilloscope operation Using the position knob in the Vertical section of the front panel, 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.

  • Page 32: To Capture A Single Event

    Operating Your Oscilloscope To capture a single event To capture a single event To capture a single event, you need some 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.
  • Page 33 Operating Your Oscilloscope To capture a single event If you need to compare several single-shot events, press Autostore Like the Run key, the Autostore key also arms the trigger circuit. When the trigger conditions are met, the oscilloscope triggers. Pressing the Autostore key again rearms the trigger circuit without erasing the display.

  • Page 34: To Capture Glitches Or Narrow Pulses

    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.
  • Page 35 Operating Your Oscilloscope To capture glitches or narrow pulses 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 glitches that occur infrequently but require the use of sweep speeds outside the range of peak detect.

  • Page 36: To Trigger On A Complex Waveform

    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.
  • Page 37 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 2-13...

  • Page 38: To Make Frequency Measurements Automatically

    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. Connect a signal to the oscilloscope and obtain a stable display. Press Time A softkey menu appears with six softkey choices.
  • Page 39 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.

  • Page 40: To Make Time Measurements Automatically

    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.
  • Page 41 Operating Your Oscilloscope To make time measurements automatically 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).
  • Page 42 Operating Your Oscilloscope To make time measurements automatically Time Measurements Four additional time measurement choices are available; +Width, [Pulse 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.

  • Page 43: To Make Voltage Measurements Automatically

    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.
  • Page 44 Operating Your Oscilloscope To make voltage measurements automatically Connect a signal to the oscilloscope and obtain a stable display. 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.
  • Page 45 Operating Your Oscilloscope To make voltage measurements automatically 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 pulse or period in the display. Figure 2-10 shows how to use delayed sweep to isolate a pulse for an rms measurement.
  • Page 46 Operating Your Oscilloscope To make voltage measurements automatically 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.

  • Page 47: To Make Cursor Measurements

    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.
  • Page 48 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 2-24...
  • Page 49 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. 2-25...
  • Page 50 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.

  • Page 51: To Remove Cabling Errors From Time Interval Measurements

    Operating Your Oscilloscope To remove cabling errors from time interval measurements To remove cabling errors from time interval measurements When measuring time intervals in the nanosecond range, small differences in cable length can totally obscure the measurement. The following exercise shows how to remove errors that different cable lengths or characteristics introduce to your measurement.

  • Page 52: To Make Setup And Hold Time Measurements

    Operating Your Oscilloscope To make setup and hold time measurements To make setup and hold time measurements One method of testing a device for its setup and hold times limits uses a variable pulse generator to provide the time varying pulses, and an oscilloscope to monitor when the setup and hold times are violated.

  • Page 53: To View Asynchronous Noise On A Signal

    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.
  • Page 54 Operating Your Oscilloscope To view asynchronous noise on a signal Press Autostore Notice that STORE is displayed in the status line. Set the Trigger Mode to Normal, then adjust the trigger level into the noise region of the signal. Decrease the sweep speed for better resolution of the asynchronous noise.

  • Page 55: To Reduce The Random Noise On A Signal

    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 2-22), you can set up the oscilloscope to reduce the noise on the waveform (figure 2-23).
  • Page 56 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 2-21). Use LF reject to remove low frequency signals such as power line noise from the trigger path.
  • Page 57 Operating Your Oscilloscope To reduce the random noise on a signal Use averaging to reduce noise on the displayed waveform. To use averaging follow these steps. • Press , the press the Average softkey. Display Notice that Av appears in the status line. •...

  • Page 58: To Analyze Video Waveforms

    Operating Your Oscilloscope To analyze video waveforms To analyze video waveforms 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. TV triggering requires two vertical divisions of display, either channel 1 or channel 2 as the trigger source, and the selection of internal trigger.
  • Page 59 Operating Your Oscilloscope To analyze video waveforms Polarity Selects either positive or negative sync pulses. Field 1 Triggers on the field 1 portion of the video signal. Field 2 Triggers on the field 2 portion of the video signal. Line Triggers on all the TV line sync pulses. HF Rej Controls a 500 kHz low pass filter in the trigger path.
  • Page 60 Operating Your Oscilloscope To analyze video waveforms Press , then press the Main softkey. Main/Delayed 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).
  • Page 61 Both-fields triggering in the Agilent 54610B hint The Agilent 54610B 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 computer monitors. To trigger on both sync pulses, press Field 1 and Field 2 at the same time.

  • Page 62: To Save Or Recall Traces

    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. Connect a signal to the oscilloscope and obtain a stable display. Press Trace A softkey menu appears with five softkey selections.

  • Page 63: To Save Or Recall Front-Panel Setups

    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.

  • Page 64: To Use The Xy Display Mode

    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.
  • Page 65 Operating Your Oscilloscope To use the XY display mode Figure 2-27 Press Cursors 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 display. In this example we are using the Y cursors, but you could have used the X cursors instead.
  • Page 66 Operating Your Oscilloscope To use the XY display mode Move the Y1 and Y2 cursors to the center of the signal. Again, note the ∆Y value. Figure 2-29 Calculate the phase difference using formula below. second ∆ Y 111.9 sin θ = = 27.25 degrees of phase shift.
  • Page 67 Operating Your Oscilloscope To use the XY display mode Figure 2-30 Signals are 90° out of phase Figure 2-31 Signals are in phase 2-43...
  • Page 68 X-axis input, channel 2 is the Y-axis input, and the external trigger in the Agilent 54610B is the Z-axis input. If you only want to see portions 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).

  • Page 69: Service

    Verifying Oscilloscope Performance 3–5 Adjusting the Oscilloscope 3–21 Troubleshooting the Oscilloscope 3–30 Replacing Parts in the Oscilloscope 3–39 Service...
  • Page 70 Service If the oscilloscope is under warranty, you must return it to Agilent Techologies for all service work covered by the warranty. See "To return the oscilloscope to Agilent Techologies," on page 3-4. If the warranty period has expired, you can still return the oscilloscope to Agilent Techologies for all service work.
  • Page 71 Service Table 3-1 Recommended list of test equipment to service the oscilloscope Equipment Critical specifications Recommended Model/Part Signal generator 1 to 500 MHz at 200 mV Agilent 8656B Option 001 high stability timebase Digital multimeter 0.1 mV resolution, better than 0.01% Agilent 34401A P, A, T accuracy...

  • Page 72: To Return The Oscilloscope To Agilent Techologies

    Service To return the oscilloscope to Agilent Techologies To return the oscilloscope to Agilent Techologies Before shipping the oscilloscope to Agilent Techologies, contact your nearest Agilent Techologies Sales Office for additional details. Write the following information on a tag and attach it to the oscilloscope.

  • Page 73: Verifying Oscilloscope Performance

    Verifying Oscilloscope Performance This section shows you how to verify the electrical performance of the oscilloscope, using the performance characteristics in chapter 4 as the standard. The characteristics checked are dc calibrator, voltage measurement accuracy, bandwidth, horizontal accuracy, and trigger sensitivity.

  • Page 74: To Check The Output Of The Dc Calibrator

    Service Verifying Oscilloscope Performance To check the output of the DC CALIBRATOR In this test you measure the output of the with a multimeter. DC CALIBRATOR is used for self-calibration of the oscilloscope. The DC CALIBRATOR accuracy is not specified, but it must be within the test limits to provide for accurate self-calibration.

  • Page 75: To Verify Voltage Measurement Accuracy

    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: ±2.4% of full scale. Table 3-3 Equipment Required Equipment...
  • Page 76 Service Verifying Oscilloscope Performance Set up the oscilloscope. , then press the Default Setup softkey. Press Setup , then press the Vavg softkey. Press Voltage Set the Volts/Div to the first line of table 3-4. Adjust the channel 1 Position knob to place the baseline near (but not at) the bottom of the display.
  • Page 77 Service Verifying Oscilloscope Performance Press the 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 3-4. If a result is not within the test limits, see "Troubleshooting the Oscilloscope,"...

  • Page 78: To Verify Bandwidth

    1 MHz and the upper bandwidth limit to calculate the bandwidth response of the oscilloscope. Test limits: Agilent 54610B, all channels (−3 dB) dc to 500 MHz ac coupled 10 Hz to 500 MHz. Table 3-5...
  • Page 79 Service Verifying Oscilloscope Performance Connect the equipment. Connect the signal generator to the input of the power splitter. Connect the power sensor to one output of the power splitter, and connect channel 1 of the oscilloscope to the other power splitter output.
  • Page 80 Service Verifying Oscilloscope Performance Press , then press the softkey. Voltage 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. 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.
  • Page 81 Service Verifying Oscilloscope Performance 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. Calculate the response using the following formula. ...

  • Page 82: To Verify Horizontal ∆T And 1/∆T Accuracy

    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 (same channel) Table 3-6 Equipment Required Equipment...
  • Page 83 Service Verifying Oscilloscope Performance Press , then press the Freq and Period softkeys. Time 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,"...
  • Page 84 Service Verifying Oscilloscope Performance Change the time mark generator to 2 ns, and change the time base to 1 ns/div. Adjust the trigger level to obtain a stable display. Press , then press the Freq and Period softkeys. Time You should measure the following: Frequency 500 MHz, test limits are 446.4 MHz to 568.2 MHz.

  • Page 85: To Verify Trigger Sensitivity

    Service Verifying Oscilloscope Performance To verify trigger sensitivity In this test you verify the trigger sensitivity by applying 100 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.
  • Page 86 Service Verifying Oscilloscope Performance Press , then press the softkey. Internal Trig Default Setup Setup Sensitivity Connect the signal generator to channel 1. Verify the trigger sensitivity at 100 MHz and 0.5 divisions. Set the signal generator to 100 MHz and about 50 mV. Press Autoscale Press 1 to select channel 1, then select 50Ω...
  • Page 87 Check for stable triggering, adjusting trigger level if necessary. Change the signal generator frequency to 100 MHz at output amplitude of 75 mV p-p, as measured with the Agilent 54610B. Press Voltage, then the softkey Vp-p Set Time/div to 10 ns/div.
  • Page 88 Agilent 54610B Performance Test Record Serial No. ______________________________________ Test by_____________________________________ Test Interval ____________________________________ Work Order No._______________________________ Recommended Next Testing _______________________ Temperature _________________________________ Output of dc calibrator Limits Result _______ 4.990 V to 5.010 V Voltage measurement accuracy Range Reading Test Limits...

  • Page 89: Adjusting The Oscilloscope

    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. • Hardware at 12 months or 2,000 hours of operation • Firmware at 6 months or 1000 hours of operation, or if ambient temperature is greater than 10 °C from the calibration temperature, or if the user desires to maximize the measurement...

  • Page 90: To Adjust The Power Supply

    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.
  • Page 91 Service Adjusting the Oscilloscope Measure the power supply voltages at L1, L2, and L3 on the system board. Make sure that the voltage measurements are within the following 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) −...

  • Page 92: To Perform The Self-Calibration

    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.
  • Page 93 Service Adjusting the Oscilloscope After the message " " is displayed on the Vertical self cal Default calibration factors loaded lower left side of the display, press the softkey. Vertical Follow the instructions on the display, then press the softkey. Continue The display prompts instruct you to connect the rear panel CALIBRATOR...

  • Page 94: To Adjust The High-Frequency Pulse Response

    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 3-10 Equipment Required Equipment Critical specifications Recommended Model/Part Pulse generator Rise time < 175 ps PSPL 1107B TD and PSPL 1110B Driver Adapter SMA (f) to BNC (m)
  • Page 95 Service Adjusting the Oscilloscope Adjust the channel 1 high-frequency response for 1.5 minor division of overshoot (6%). Repeat steps 1 through 6 for channel 2. Figure 3-2 High-frequency pulse response adjustments 3-27...

  • Page 96: To Adjust The Display

    Service Adjusting the Oscilloscope 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 3-11 Equipment Required Equipment Critical specifications Recommended...
  • Page 97 Service Adjusting the Oscilloscope 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. Press any key to continue to the next test pattern. Then, adjust H.Hold (horizontal hold) to center the display horizontally.

  • Page 98: Troubleshooting The Oscilloscope

    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. The maintenance described in this section is performed with power supplied W A R N I N G to the oscilloscope and with the protective covers removed.

  • Page 99: To Construct Your Own Dummy Load

    Service Troubleshooting the Oscilloscope To construct your own dummy load Obtain a connector compatible with the connector on the LVPS. 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...

  • Page 100: To Check Out The Oscilloscope

    Service Troubleshooting the Oscilloscope To check out the oscilloscope Is there an interface module connected to the oscilloscope? If yes, do the following steps. If not, go to step 2. Turn off the oscilloscope. Remove the module. Turn on the oscilloscope, then check for the failing symptom. If the failing symptom disappears, replace the module.
  • Page 101 Service Troubleshooting the Oscilloscope Disconnect the display cable, then check the following signals on the system board. Table 3-13 Signals at U56 Signal Frequency Pulse width Voltage 38.0 µs U16 Pin 7 19.72 kHz 2.6 Vp-p 3.0 µs U16 Pin 24 Hsync 19.72 kHz 5.0 Vp-p...
  • Page 102 Service Troubleshooting the Oscilloscope 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. Disconnect the power cord. Disconnect the ribbon cable from the power supply. Connect the dummy load to the power supply connector.

  • Page 103: To Check The Lvps (Low Voltage Power Supply)

    Service Troubleshooting the Oscilloscope To check the LVPS (Low Voltage Power Supply) Disconnect the power cord, then set the oscilloscope on its side. Connect the negative lead of the multimeter to a ground point on the oscilloscope. Connect the power cord and turn on the oscilloscope. Measure the power supply voltages at L3, L4, and L5 on the system board.

  • Page 104: To Run The Internal Self-Tests

    Service Troubleshooting the Oscilloscope To run the internal self-tests Perform the keyboard test. Press Print/Utility Press the Self Tst softkey, then press the Keyboard softkey. A pictorial diagram of the front panel will appear on the display. Press each key, and notice that when you press a key a corresponding block on the display fills in.
  • Page 105 Service Troubleshooting the Oscilloscope Check the output level of the Press the DAC softkey. Connect a multimeter to the rear panel connector. DC CALIBRATOR The multimeter should read 0 V ±500 µV. Press any key to continue. The multimeter should read 5 V ±10 mV. Are the DAC voltages correct? If yes, press any key to continue.
  • Page 106 Service Troubleshooting the Oscilloscope Perform the test. Press the RAM softkey. 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. Perform the display test. Press Print/Utility Press the Self Tst softkey, then press the Display softkey.

  • Page 107: Replacing Parts In The Oscilloscope

    Also in this section is a parts list for the assemblies and hardware of the oscilloscope that you can order from Agilent Technologies. Before working on the oscilloscope, read the safety summary at the front of this book.

  • Page 108: To Replace An Assembly

    Service Replacing Parts in the Oscilloscope To replace an assembly Refer to the exploded view of the oscilloscope, figure 3-8, 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: •...
  • Page 109 Service Replacing Parts in the Oscilloscope Use a screwdriver to release retainer tab A, and your finger to release retainer tab B. See figure 3-5. 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.
  • Page 110 Service Replacing Parts in the Oscilloscope Display Remove the front panel. Disconnect the ribbon cable and the calibration cable from the display. 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.
  • Page 111 Service Replacing Parts in the Oscilloscope Power supply Remove the fan. Disconnect the ground wire (green wire with the yellow stripe) from the deck. Disconnect the ribbon cable from the power supply board. 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.
  • Page 112 Service Replacing Parts in the Oscilloscope Keyboard Remove the front panel. Remove all the knobs by pulling straight out. Flex the bezel of the front panel to unsnap the small keyboard under the display opening. Using the T10 TORX driver, remove the three screws from the large keyboard.

  • Page 113: To Remove The Handle

    To order a replacement part The system board is part of an exchange program with Agilent Technologies. The exchange program allows you to exchange a faulty assembly with one that has been repaired and performance verified by Agilent Technologies.
  • Page 114 Service Replacing Parts in the Oscilloscope • To order a part in the material list, quote the Agilent Technologies part number, indicate the quantity desired, and address the order to your nearest Agilent Technologies 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.
  • Page 115 Service Replacing Parts in the Oscilloscope Figure 3-8 Exploded view of oscilloscope showing reference designators. 3-47...
  • Page 116 Service Replacing Parts in the Oscilloscope Table 3-14 Replaceable Parts Reference Agilent Part Description Designator Number 0950-2125 Power supply assembly 2090-0316 Display assembly 54610-66508 System board (includes A/D, but not attenuators) 54610-69508 Exchange system board (includes A/D, but not attenuators) 54610-66504 Keyboard 54615-63403...
  • Page 117 Service Replacing Parts in the Oscilloscope Reference Agilent Part Description Designator Number 8120-1521 Standard power cord 8120-1703 Power cord option 900, United Kingdom 8120-0696 Power cord option 901, Australia 8120-1692 Power cord option 902, Europe 8120-0698 Power cord option 904, 250 V, USA/Canada 8120-2296 Power cord option 906, Switzerland 8120-2957...
  • Page 118 3-50...

  • Page 119: Performance Characteristics

    Performance Characteristics...

  • Page 120: Vertical System

    Performance Characteristics The performance characteristics describe the typical performance of the Agilent 54610B 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,"...
  • Page 121 Performance Characteristics Vertical System Channels 1 and 2 (continued) Range: 2 mV/div to 5 V/div : ±2.0% of full scale Accuracy : Fully calibrated, accuracy ±2.0 % of reading Verniers 1, 2, 3: Cursor accuracy Single cursor accuracy: vertical accuracy ±1.2% of full scale ±0.5% of position value Dual cursor accuracy: vertical accuracy ±0.4% of full scale Bandwidth limit: ≈30 MHz...

  • Page 122: Horizontal System

    Performance Characteristics Horizontal System Horizontal System Sweep speeds: 5 s/div to 1 ns/div main and delayed Accuracy: ±0.01% of reading Vernier (Both main and delayed sweep): Accuracy ±0.05% of reading Horizontal resolution: 25 ps Cursor accuracy (∆t and 1/∆t): ±0.01% ±0.2% of full scale ±200 ps Delay jitter: 10 ppm Pretrigger delay (negative time): ≥10 divisions Posttrigger delay (from trigger point to start of sweep):...

  • Page 123: Trigger System

    Performance Characteristics Trigger System Trigger System Sources: Channels 1, 2, line, and external Internal trigger Sensitivity dc to 25 MHz 0.5 div or 5.0 mV 100 MHz to 500 MHz 1 div or 10 mV Coupling: ac, dc, LF reject, HF reject, and noise reject LF reject attenuates signals below 50 kHz, and HF reject attenuates signals above 50 kHz Modes: Auto, Autolevel, Normal, Single, and TV...

  • Page 124: Xy Operation

    Performance Characteristics XY Operation XY Operation Operating mode: X=Ch 1, Y=Ch 2, Z=Ext. Trigger Z Blanking: TTL high blanks trace Bandwidths: X-axis and Y-axis same as vertical system Z-axis is dc to 100 MHz Phase difference: ±3 degrees at 100 kHz Display System Display: 7-inch raster CRT Resolution: 256 vertical by 500 horizontal points...

  • Page 125: Acquisition System

    Performance Characteristics Acquisition System Acquisition System Maximum sample rate: 10 GSa/s for repetitive signals, 20 MSa/s for single shot signals on a single channel, and 10 MSa/s for single shot signals on dual channels Resolution: 8 bits Simultaneous channels: Channels 1 and 2 Record length: Vectors off: 4,000 points Vectors on and/or single shot: 2,000 points...

  • Page 126: Advanced Functions

    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 Cursor Measurements: Four cursors can be positioned on the display to make time voltage measurements.

  • Page 127: General

    Operating: −10 °C to +55 °C Nonoperating: −51 °C to +71 °C Humidity: (tested to Agilent Technologies environmental 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...
  • Page 128 Performance Characteristics General Vibration Operating: 15 minutes along each of the 3 major axes; 0.0635 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.

  • Page 129: Glossary

    Glossary This only available for channels 1 and 2 only. 50Ω Input Protection functions when the scope is powered This feature is useful for viewing noisy signals on. The 50Ω load will typically dis- connect if greater than 5 Vrms is Couplng (Coupling) This changes detected.
  • Page 130 TV line sync triggering. The external trigger is pulses. As a trigger source, the oscil- viewable on the Agilent 54610B, al- loscope triggers off of the power line lowing it to be used as an additional frequency.
  • Page 131 Glossary Print/Utility Allows access to the Setup Allows access to front-panel module menus and service menus. setup keys. Probe Allows selection of 1, 10, or Single (single shot) The oscillo- 100 to match a probe’s division ratio scope triggers once when the trigger so that the vertical scaling and volt- conditions are met.
  • Page 132 Glossary Time Null The removal of time off- TV Allows access to the TV or set errors between two signals. The video trigger keys. error is typically due to differences in either cable lengths or charac- Vernier Vernier allows a cali- teristics.

  • Page 133: Index

    Index ac coupling, 1–8, 1–12, 4–3, 4–5 calibration EMI, 4–9 accuracy adjustments, 3–21 to 3–29 environmental characteristics, 4–9 cursors, 4–3 to 4–4 delay, 3–25 Erase softkey, 2–7 to 2–8 horizontal, 4–4 self, 3–24 to 3–25 erasing the display, 2–8 vertical, 4–3 vertical, 3–25 exploded view, 3–47 acquisition characteristics, 4–7...
  • Page 134 Index noisy signals LF reject, 2–32 to remove from display, 2–31 to 2–33 rearming trigger, 2–8 line to view, 2–29, 2–31 to 2–33 Recall Setup softkey, 2–38 trigger, 1–12, 4–5 nonvolatile memory, 2–38 recall waveforms, 2–38 trigger (TV), 4–5 Normal softkey, 1–13 reject Line softkey noise, 4–5...
  • Page 135 Index sweep single, 2–8 to 2–9 Vtop, 2–22 delayed, 1–10 to 1–11, 4–4 slope, 2–8 volts versus time, 2–40 main, 1–10 to 1–11, 4–4 source, 1–12, 1–14, 2–8 volts versus volts, 2–40 roll, 1–15 to verify, 3–17 Volts/Div knob, 1–9 speed, 1–10 to 1–11, 4–4 TV, 1–13, 2–34, 2–37 TV mode, 2–35...
  • Page 136 Index-4...
  • Page 137 This product was tested in a typical configuration with Agilent Technologies test systems. Colorado Springs, 1/23/97 John Strathman, Quality Manager European Contact: Your local Agilent Technologies Sales and Service Office or Agilent Technologies GmbH, Department ZQ / Standards Europe, Herrenberger Strasse 130, 71034 Böblingen Germany (FAX: +49-7031-143143)
  • Page 139 Do not operate the purpose. of the instrument to the W A R N I N G instrument in the presence of Agilent Technologies shall protective conductor of the flammable gasses or fumes. The Warning sign denotes a not be liable for errors (mains) power cord.
  • Page 140 About this edition disclaims the implied This Agilent Technologies This is the the Agilent warranties or merchantability product has a warranty 54610B Oscilloscope User and fitness for a particular against defects in material and Service Guide. purpose. and workmanship for a period...

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