Agilent Technologies 54621A User manual

Service Guide
Publication Number 54622-97037
December 2002
For Safety Information, arranties, and Regulatory information, see the pages
at the end of this book.
© Copyright Agilent Technologies 2000, 2002
All Rights Reserved
Agilent 54621A/22A/24A
Oscilloscope and
Agilent 54621D/22D
Mixed-Signal Oscilloscope
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ii
The Oscilloscope At a Glance
Choosefromavarietyofoscilloscopes forcapturing
long, non-repeating signals
with 200 MSa/s sample rate and 2 MBytes of
MegaZoom deep memory per channel.
•Agilent 54621A - 2-channel, 60-MHz bandwidth
•Agilent54621D -2-channel+16logicchannels,60-
MHz bandwidth
•Agilent 54622A - 2-channel, 100-MHz bandwidth
•Agilent 54622D - 2-channel +16 logic channels,
100-MHz bandwidth
•Agilent 54624A - 4-channel, 100-MHz bandwidth
Display shows current input signals
• All analog and digital (54621D/22D) channels
displayed in main and delayed mode
• Indicators for channel, time base, digital (54621D/
22D) channel activity, trigger and acquisition
status
• Softkey labels
• Measurement results
Digital channel controls select, position, and label
inputs (54621D/22D)
• Turn channels on or off individually or in groups
of 8
• Rearrange order of channels to group related
signals
• Create and display labels to identify channels
Run control keys begin and end data acquisition
• Run/Stop starts and stops continuous
acquisitions
• Single performs one acquisition
• Infinitepersistenceaccumulatesanddisplaysthe
results of multiple acquisitions
Horizontal Controls select sweep speed and delay
parameters
• Sweep speeds from 5 ns/div to 50 ns/div
• Delay control moves waveform display to point of
interest
• Delayed mode and delay allowzoomingin toshow
a portion of waveform in detail (split screen)
Trigger keys define what data the oscilloscope will
trigger on
• Source key allows conventional oscilloscope
triggering
• Modes include Edge, Pulse Width, Pattern, CAN,
Duration, I2C, LIN, Sequence, SPI, TV, and USB
triggering
General controls measure, save and restore results,
and configure the oscilloscope
• Waveform math including FFT, subtract, multiply,
integrate, and differentiate
• Use Quick Meas to make automatic
measurements Integrated counter included with
Quick Meas.
• Use cursors to make manual measurements
• Save or recall measurement configurations or
previous results
• Autoscale performs simple one-button setup of
the oscilloscope
Softkeys extend the functionality of command keys
Selectmeasurementtypes,operatingmodes,trigger
specifications, label data, and more
Digital channel inputs through a flexible probing
system (54621D/22D)
• Sixteen channels through a dual 8-channel cable
with micro-clips
• Set logic levels as TTL, CMOS, ECL, or to a user-
definable voltage
Utilities
• Dedicated parallel printer port, controller
operation, floppy disk storage
Built in Quick Help system
• Press and hold any key front-panel key or softkey
to get help in 11 languages.
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iii
In his Book
This book provides the service information for the Agilent 54621A/22A/24A
Oscilloscope and the Agilent 54621D/22D Mixed-Signal Oscilloscope.
This manual is divided into these chapters:
Chapter 1 provides general information and specifications.
Chapter 2 shows you how to prepare the oscilloscope for use.
Chapter 3 gives performance tests.
Chapter 4 covers calibration and adjustment procedures.
Chapter 5 provides troubleshooting information.
Chapter 6 gives the procedures and techniques for replacing assemblies and
other parts.
Chapter 7 includes a list of replaceable parts, part ordering information, and
shipping information.
At the back of the book you will find Safety information, arranties, and
Regulatory information.
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iv
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Contents
Contents-1
1 General Information
To inspect package contents 1-3
To inspect options and accessories 1-6
Performance Characteristics 1-9
2 Preparing the Oscilloscope for Use
Setting up the Oscilloscope 2-3
To adjust the handle 2-4
To power-on the oscilloscope 2-5
To adjust the display intensity 2-6
To connect the oscilloscope probes 2-7
To compensate your probe 2-7
To use the digital probes (mixed-signal oscilloscope only) 2-8
To connect a printer 2-12
To connect an RS-232 cable 2-12
To verify basic oscilloscope operation 2-13
Getting started using the oscilloscope interface 2-14
Using Quick Help 2-16
Selecting a language for Quick Help when the oscilloscope starts up 2-16
Selecting a language for Quick Help after you have been operating the
oscilloscope 2-17
Loading a language from floppy disk 2-18
Cleaning the oscilloscope 2-19
3 Testing Performance
List of Test Equipment 3-3
To construct the test connector 3-4
To test the 54621D/22D Oscilloscope digital channels 3-5
To verify threshold accuracy 3-6
To verify voltage measurement accuracy 3-10
To verify bandwidth 3-13
To verify horizontal Dt and 1/Dt accuracy 3-15
To verify trigger sensitivity 3-17
Agilent 54622A/22D/24A Performance Test Record 3-20
Agilent 54621A/21D Performance Test Record 3-21
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Contents
Contents-2
4 Calibrating an A justing
To adjust the power supply 4-4
To perform User Cal 4-7
To adjust the oscilloscope display 4-8
5 Troubleshooting
Solving General Problems with the Oscilloscopes 5-3
If there is no trace display 5-3
If the trace display is unusual or unexpected 5-4
If you cannot see a channel 5-5
roubleshooting the Oscilloscope 5-6
To construct your own dummy load 5-7
To check out the oscilloscope 5-8
To check the Low Voltage Power Supply 5-11
To run the internal self-tests 5-13
6 Replacing Assemblies
To remove the cabinet 6-4
To remove the fan 6-5
To remove the floppy drive 6-6
To remove the front panel 6-7
To remove the display 6-8
To remove the system board 6-10
To remove the power supply 6-12
To remove the keyboard assembly 6-15
To remove the handle 6-16
7 Replaceable Parts
To order a replacement part 7-3
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1
General Information
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1-2
General Information
This chapter lists general information for the Agilent 54620-series
Oscilloscopes. It also includes performance characteristics and
specifications for the oscilloscopes.
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1-3
General Information
o inspect package contents
❏Inspect the shipping container for damage.
If your shipping container appears to be damaged, keep the shipping container
or cushioning material until you have inspected the contents of the shipment
for completeness and have checked the oscilloscope mechanically and
electrically.
❏Verify that you received the following items and any optional accessories in
the oscilloscope packaging (see figure following).
• 54620-Series Oscilloscope (54621A, 21D, 22A, 22D, or 24A)
• 10074C 10:1 150 MHz passive probes with ID:
(2) for 54621A, 21D, 22A, or 22D oscilloscopes
(4) for 54624A oscilloscope
• 54620-68701 digital probe kit (for 54621D or 22D)
• Accessory pouch and front-panel cover (standard for 54622A, 22D, and 24A)
(optional on 54621A and 21D; order N2726A)
• Power cord (see table 1-3)
• IntuiLink for 54600-series Oscilloscopes software and RS-232 cable (for
54622A, 22D, or 24A).
IntuiLink is a indows application that makes it very easy for you to
download images, waveform data, or oscilloscope setups from the
oscilloscope to your pc using either Microsoft ord or Microsoft Excel. After
installation of IntuiLink, a tool bar in these Microsoft applications will make
connection and data transfer from the oscilloscope very simple.
IntuiLink software is available free on the web at:
www.agilent.com/find/5462xsw
RS-232 cable may be ordered separately, part number 34398A
If anything is missing, contact your nearest Agilent Sales Office. If the shipment
was damaged, contact the carrier, then contact the nearest Agilent Sales Office.
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1-4
General Information
• Agilent IntuiLink Data Capture (for 54622A, 22D, or 24A)
IntuiLink Data Capture is a standalone program for downloading waveform
data from the oscilloscopes to your PC via GPIB or RS-232 interface. It
provides the capability to transfer deep memory data out of the oscilloscope,
allowing up to 4MB (scope channels) and 8MB (logic channels). The
IntuiLink for 54600-Series limits the size of acquisition data available to a
maximum of 2,000 points regardless of actual number of acquisition points
on the screen. ith the IntuiLink Data Capture, the amount of points
transferred will be the actual number of acquisition points currently
displayed or you may select the number of points to download. It provides
the following functionality:
• Download waveform data and display the data as a simple chart
• Save the data as binary or text files
• Copy the chart and a selected portion of the data to the clipboard. The
maximum data saved to the clipboard is 50,000 point
• Load saved waveform data back into the application
IntuiLink Data Capture software is available free on the web at:
www.agilent.com/find/5462xsw
RS-232 cable may be ordered separately, part number 34398A
❏Inspect the oscilloscope
• If there is mechanical damage or a defect, or if the oscilloscope does not
operate properly or does not pass the performance tests listed in the Service
Guide, notify your Agilent Sales Office.
• If the shipping container is damaged, or the cushioning materials show signs
of stress, notify the carrier and your Agilent Sales Office. Keep the shipping
materials for the carrier’s inspection. The Agilent Sales Office will arrange
for repair or replacement at Agilent’s option, without waiting for claim
settlement.
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