HP 54600A Manual

User

and

Service

Guide

54600A

and

54601A

Oscilloscopes

General Purpose 100-MHz Oscilloscopes

The

54600A and

54601A offer exceptional waveform

viewing and measurements in a small lightweight oscilloscope.

The two channel

54600A

suited for production, field service,

and education applications. The four channel

54601A

best

suited for research and design labs, and applications involving

digital circuit test and troubleshooting.

• 100

MHz

bandwidth, 2 ns/div main and

delay~d

time

bases

• Auto setup of the front panel

• Automatic and cursor measurements of frequency, time, and

voltage

• Waveform storage

• Save and recall of

front-panel setups

• Peak detect

These oscilloscopes are easy to use with familiar controls and high

display update rate,

but

with none of the viewing problems that

are associated with analog oscilloscopes. A bright crisp display

obtained at all sweep speeds and delayed sweep magnifications.

Storage

as simple

pressing a button. Negative time allows

the viewing ofevents

that

occur before the trigger event. Cursors

and automatic measurements greatly simplify the analysis of these

events.

You

can upgrade both of the oscilloscopes to print to a

printer

to plot to a plotter, or remote control

either

HP-IB

RS-232. The

54653A software

a set of

MS®

-DOS

utilities

that

simplifies

the transfer of waveforms, data, and setups to a

personal computer for analysis and documentation.

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Accessories supplied

• Two 1.5 meter, 10:1 Probes,

10071A

• Power cord for country of destination

• This User

and

Service Guide

Accessories available

•

54650A

HP-IB

Interface Module

•

54651A RS-232 Interface Module

•

54652A Parallel Interface Module

•

54653A Software for Simple

Operation

•

5041-9409 Carrying Case

•

5062-7345 Rackmount Kit

•

54654A Operator's Training Kit

•

10079A Camera

•

10070A 1.5 meter, 1:1 Probe

•

10100C 50 0 Termination

Options available

• Option 101 Accessory Pouch

and

Front-panel Cover

• Option 102 Two Additional10:1 Probes,

10071A

• Option 001 RS03 Magnetic Interference Shielding Added to

CRT

• Option 002 RE02 Display Shield Added to

CRT

• Option 103 Operator's Training Kit,

54654A

• Option 104 Carrying Case,

5041-9409

• Option 105, Software for Simple

Operation

54653A

• Option 090 Delete Probes

• Option 908 Rackmount Kit

• Option 910 Additional Copy

the

ll<:t.rrr

n.nd Servir..e

Guide

• Power Cords, see "Replaceable Parts", Table 15

page 112

In This Book

This book is

the

operating

and

service

manual

for

the

54600A

and

HP 54601A Oscilloscopes,

and

contains four chapters.

Beginners 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.

Service technicians Chapter 3 contains the service infonnation for

the oscilloscope. There are procedures for verifying perfonnance,

adjusting, troubleshooting, and replacing assemblies in the

oscilloscope.

Reference

information

Chapter

4 lists

the

characteristics of

the

oscilloscope.

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Contents

1 The Oscilloscope

a Glance

connect a signal to the oscilloscope 9

display a signal automatically

set up the vertical window

set up the time base

trigger the oscilloscope

2 Operating Your Oscilloscope

use delayed sweep

use storage oscilloscope operation

capture a single event

capture glitches or narrow pulses

trigger

a complex waveform

make frequency measurements automatically

make time measurements automatically

make voltage measurements automatically

make cursor measurements

view asynchronous noise on a signal

reduce the random noise

a signal

analyze video waveforms

save or recall traces

use the

display mode

save or recall front-panel setups

Service

return the oscilloscope to Hewlett-Packard

Verifying Oscilloscope Performance 65

check the output of the

CALIBRATOR

verify voltage measurement accuracy

verify bandwidth

verify bandwidth (alternate method)

verify horizontal.:lt and

1/.:lt

accuracy

verify trigger sensitivity

Coateats

Adjusting the Oscilloscope 83

adjust the power supply

calibrate the firmware

adjust the low frequency compensation

adjust the high frequency pulse response

adjust the display

Troubleshooting the Oscilloscope

construct your own dummy load

check out the oscilloscope

check the L

VPS.

run

the internal self tests 100

Replacing

Parts

in the Oscilloscope 103

replace

assembly 104

remove the handle

109

order a replacement part 109

4 Performance Characteristics

Vertical System

116

Horizontal System

118

Trigger System

119

Operation

120

Display System 120

Acquisition System

120

Advanced Functions

121

Power Requirements

121

General

122

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The

Oscilloscope

a Glance

The Oscilloscope at a Glance

One of the first things you will want to

with your new

oscilloscope is

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

keyl:l

bring up softkey menus on the

display that allow you access to many of the oscilloscope features.

The white keys are instant action keys and menus are not

associated with them.

Throughout this book, the front-panel keys are denoted by a box

around the name of the key, and softkeys are denoted

a change

in the text type. For example, I

source

the grey front-panel

key labeled source under

the

trigger portion of the front panel,

and

Line

is a softkey. The word

Line

the bottom of the

display directly above an unlabeled softkey (which

also grey).

The rear cover of this book

a fold out reference guide.

this

cover you will fmd a diagram of the front panel, and inside the

cover is another diagram showing which grey keys to press to

bring up the softkey menus.

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 interpret the setup ofthe oscilloscope from the

status line.

example of the status line

on the rear cover of

this book.

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\._/

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The

Oscilloscope

Glance

COllect a slg1al to tile oscilloscope

connect a signal to

the

oscilloscope

The

54600A

is a two-channel oscilloscope with an external trigger

input, while the

54601A

is a four-channel oscilloscope. The

four-r.hannel oscilloscope replaces the external trigger inout with

channels 3 and

this exercise you connect a signal to the channel 1

input.

avoid damage to your new oscilloscope, make sure that the voltage

level of the signal you are using is less than or equal to 400 V (de plus

the peak ac). For a complete list of the characteristics see chapter

"Performance CharacterisLics," on page

115.

•

Use

BNC

cable or a probe to connect a signal to channel 1.

you are using a probe, the oscilloscope allows you to enter the

attenuation factor for the probe. The attenuation factor changes the

vertical scaling of the oscilloscope so that the measurement results

reflect the actual voltage levels at the probe tio.

•

set the probe attenuation factor press

. Next toggle

the

Probe

softkey to change the attenuation factor to

match the probe you are using.

Figure

OVercompensation

causes

pulse

peaking.

Figure

Correct

compensation

with

flat

pulse

top.

Figure

Undercompensation

causes

pulse

rolloff.

The

Oscilloscope

Glance

co11ect

s1g111

tile

oscilloscope

You

should compensate

10:1

probes to match their characteristics to the

oscilloscope. A poorly compensated probe can introduce measurement

errors.

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 I

Autoscale

Use

a nonmetallic tool to adjust the trimmer capacitor on the

probe

for

the flattest pulse possible as displayed on the

oscilloscope.

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