Agilent Technologies 54641A Manuale utente

Service Guide

Publication Number 54642-97004

September 2002

For Safety Information and Re ulatory information,

see the pa es at the end of this book.

All Ri hts Reserved

Agilent 54641A/42A

Oscilloscopes and

Agilent 54641D/42D

Mixed-Signal Oscilloscopes

service.book Page i Wednesday, August 28, 2002 3:25 PM

The Oscilloscope At a Glance

Choose from a variety of oscilloscopes

all with 2 GSa/s sample rate and

2 MBytes of MegaZoom deep memory

per channel for capturing long,

non-repeating signals.

•Agilent 54641A - 2-channel, 350-MHz

bandwidth

•Agilent 54641D - 2-channel +16 logic

channels, 350-MHz bandwidth

•Agilent 54642A - 2-channel, 500-MHz

bandwidth

•Agilent 54642D - 2-channel +16 logic

channels, 500-MHz bandwidth

Display shows current input signals

• All analog and digital (54641D/42D)

channels displayed in main and

delayed mode

• Indicators for channel, time base,

digital (54641D/42D) channel activity,

trigger and acquisition status

• Softkey labels

• Measurement results

Digital channel controls select,

position, and label inputs (54641D/42D)

• Turn channels onor off individuallyor

in groups of 8

• Rearrangeorderofchannelstogroup

related signals

• Create and display labels to identify

channels

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

• Use cursors to make manual

measurements

• Save or recall measurement

configurations or previous results

• Autoscale performs simple

one-button setup of the oscilloscope

HorizontalControlsselectsweepspeed

and delay parameters

• Sweep speeds from 1 ns/div to

50 s/div

• Delay control moves waveform

display to point of interest

• Delayed mode and delay allow

zooming in to show a portion of

waveform in detail (split screen)

Run control keys begin and end data

acquisition

• Run/Stopstartsandstopscontinuous

acquisitions

• Single performs one acquisition

• Infinitepersistence accumulates and

displays the results of multiple

acquisitions

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

Softkeys extend the functionality of

command keys

Select measurement types, operating

modes,triggerspecifications,labeldata,

and more

Digitalchannelinputsthrough a flexible

probing system (54641D/42D)

• 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.

service.book Page ii Wednesday, August 28, 2002 3:25 PM

iii

In his Book

This book provides the service information for the A ilent 54641A/42A

Oscilloscope and the A ilent 54641D/42D Mixed-Si nal Oscilloscope.

This manual is divided into these chapters:

Chapter 1 provides eneral information and specifications.

Chapter 2 shows you how to prepare the oscilloscope for use.

Chapter 3 ives performance tests.

Chapter 4 covers calibration and adjustment procedures.

Chapter 5 provides troubleshootin information.

Chapter 6 ives the procedures and techniques for replacin assemblies and

other parts.

Chapter 7 includes a list of replaceable parts, part orderin information, and

shippin information.

At the back of the book you will find Safety information, Warranties, and

Re ulatory information.

service.book Page iii Wednesday, August 28, 2002 3:25 PM

service.book Page iv Wednesday, August 28, 2002 3:25 PM

Contents

Contents-1

1 General Information

To inspect packa e 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 waveform intensity 2-6

To connect the oscilloscope analo probes 2-7

To compensate your analo probe 2-8

To use the di ital probes (mixed-si nal oscilloscope only) 2-9

To connect a printer 2-13

To connect an RS-232 cable 2-13

To verify basic oscilloscope operation 2-14

Getting started using the oscilloscope interface 2-15

Using Quick Help 2-17

Selectin a lan ua e for Quick Help when the oscilloscope starts up 2-17

Selectin a lan ua e for Quick Help after you have been operatin the

oscilloscope 2-18

Loadin an updated lan ua e file from floppy disk 2-19

Cleaning the oscilloscope 2-20

3 Testing Performance

List of Test Equipment 3-3

To construct the test connector 3-4

To test the 54641D/42D Oscilloscope di ital channels 3-5

To verify threshold accuracy 3-6

To verify volta e measurement accuracy 3-10

To verify bandwidth 3-13

To verify horizontal Dt and 1/Dt accuracy 3-15

To verify tri er sensitivity 3-17

A ilent 54642A/42D Performance Test Record 3-20

A ilent 54641A/41D Performance Test Record 3-21

service.book Page 1 Wednesday, August 28, 2002 3:25 PM

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 Volta e 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

service.book Page 2 Wednesday, August 28, 2002 3:25 PM

General Information

1-2

General Information

This chapter lists general information for the Agilent 54640-series

Oscilloscopes. It also includes performance characteristics and

specifications for the oscilloscopes.

1-3

General Information

To inspect package contents

❏Inspect the shipping container for damage.

If our shipping container appears to be damaged, keep the shipping container

or cushioning material until ou have inspected the contents of the shipment

for completeness and have checked the oscilloscope mechanicall and

electricall .

❏Verify that you received the following items and any optional accessories in

the oscilloscope packaging (see figure following).

• 54640-Series Oscilloscope (54641A, 41D, 42A, or 42D)

• 10073C 10:1 500 MHz passive probes with ID (qt 2)

• 54620-68701 digital probe kit (for 54641D or 42D)

• Accessor pouch and front-panel cover

• Power cord (see table 1-3)

• IntuiLink for 54600-series Oscilloscopes software and RS-232 cable.

IntuiLink is a Windows application that makes it ver eas for ou to

download images, waveform data, or oscilloscope setups from the

oscilloscope to our pc using either Microsoft Word or Microsoft Excel. After

installation of IntuiLink, a tool bar in these Microsoft applications will make

connection and data transfer from the oscilloscope ver simple.

IntuiLink software is available free on the web at:

www.agilent.com/find/5462xsw

RS-232 cable ma be ordered separatel , part number 34398A

If an thing is missing, contact our nearest Agilent Sales Office. If the shipment

was damaged, contact the carrier, then contact the nearest Agilent Sales Office.

1-4

General Information

• Agilent IntuiLink Data Capture

IntuiLink Data Capture is a standalone program for downloading waveform

data from the oscilloscopes to our PC via GPIB or RS-232 interface. It

provides the capabilit to transfer deep memor 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. With the IntuiLink Data Capture, the amount of points

transferred will be the actual number of acquisition points currentl

displa ed or ou ma select the number of points to download. It provides

the following functionalit :

• Download waveform data and displa the data as a simple chart

• Save the data as binar or text files

• Cop 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

❏Inspect the oscilloscope

• If there is mechanical damage or a defect, or if the oscilloscope does not

operate properl or does not pass the performance tests listed in the Service

Guide, notif our Agilent Sales Office.

• If the shipping container is damaged, or the cushioning materials show signs

of stress, notif the carrier and our 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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