Agilent Technologies 54622A Manuale utente

User’s Guide

Publication Number 54622-97014

August 2000

For Safety nformation, Warranties, and Regulatory information,

see the pages behind the ndex.

Agilent 54621A/22A/24A

Oscilloscopes and

Agilent 54621D/22D

Mixed-Signal Oscilloscopes

The Oscilloscopes at a Glance

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

Digitalchannelcontrolsselect,position,

and label inputs (54621D/22D)

• Turn channels on or off individually or

in groups of 8

• Rearrange order of channelsto group

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

Horizontal Controls select sweep speed

and delay parameters

• Sweep speeds from 5 ns 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/Stop starts and stops continuous

acquisitions

• Single performs one acquisition

• Infinite persistence 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, TV, Sequence, I2C, and

Duration triggering.

Softkeys extend the functionality of

command keys

Select measurement types, operating

modes, trigger specifications, label data,

and more

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

• Pressandholdanykeyfront-panelkey

or softkey to get help in 9 languages.

iii

n This Book

This manual will guide you in using the oscilloscopes. This manual is organized

in the following chapters:

Chapter 1 Getting Started—inspecting, cleaning, and setting up your

oscilloscope, using Quick Help.

Chapter 2 Front-panel Overview—A quick start guide to get you familiarize

you with the front-panel operation.

Chapter 3 Triggering the Oscilloscope—how to trigger the oscilloscope using

all the various modes.

Chapter 4 MegaZoom Concepts and Oscilloscope Operation—acquiring

waveforms, horizontal and vertical operation, using digital channels.

Chapter 5 Making Measurements—capturing data, using math function,

making measurement with cursors and automatic measurements.

Chapter 6 Utilities—configuring the /O, print settings, Quick Help, floppy

disk operations, user cal and self cal, setting the clock and screen saver.

Chapter 7 Performance Characteristics

Contents

Contents-1

1 Getting Started

Setting up the Oscilloscope 1-4

To inspect package contents 1-5

To inspect options and accessories 1-7

To clean the oscilloscope 1-10

To adjust the handle 1-11

To power-on the oscilloscope 1-12

To adjust the display intensity 1-13

To connect the oscilloscope probes 1-14

To use the digital probes (mixed-signal oscilloscope only) 1-15

To connect a printer 1-19

To connect an RS-232 cable 1-19

To verify basic oscilloscope operation 1-20

Getting started using the oscilloscope interface 1-21

Using Quick Help 1-23

Selecting a language for Quick Help when the oscilloscope starts up 1-23

Selecting a language for Quick Help after you have been operating the

oscilloscope 1-24

Loading a language from floppy disk 1-25

2 Front-Panel Overview

mportant Oscilloscope Considerations 2-3

54620-series Oscilloscope Front Panels 2-7

Front-Panel Operation 2-10

nterpreting the display 2-11

To use analog channels to view a signal 2-12

To use digital channels to view a signal 2-13

To display signals automatically using Autoscale 2-14

To apply the default factory configuration 2-15

To adjust analog channel vertical scaling and position 2-16

To set the vertical expand reference for the analog signal 2-17

Contents

Contents-2

To set analog channel probe attenuation factor 2-17

To display and rearrange the digital channels 2-18

To operate the time base controls 2-19

To start and stop an acquisition 2-20

To make a single acquisition 2-20

To use delayed sweep 2-21

To make cursor measurements 2-22

To make automatic measurements 2-23

To modify the display grid 2-24

To print the display 2-24

3 Triggering the Os illos ope

Selecting Trigger Modes and Conditions 3-3

To select the Mode and Coupling menu 3-3

To select a trigger mode: Auto Level, Auto, Normal 3-4

To select trigger Coupling 3-6

To select Noise Reject and HF Reject 3-6

To set holdoff 3-7

Trigger Types 3-9

To use edge triggering 3-10

To use pulse width triggering 3-12

To use pattern triggering 3-15

To use duration triggering 3-17

To use 2C triggering 3-20

To use sequence triggering 3-23

To use TV triggering 3-29

The Trig Out connector 3-39

Contents

Contents-3

4 MegaZoom Con epts and Os illos ope Operation

MegaZoom Concepts 4-3

Deep Memory 4-4

Oscilloscope Responsiveness 4-5

Display Update Rate 4-6

To setup the Analog channels 4-7

To setup the Horizontal time base 4-10

Acquisition Modes 4-16

Display modes 4-20

Pan and Zoom 4-22

To pan and zoom a waveform 4-23

Run/Stop/Single/ nfinite Persistence Operation 4-24

Acquiring Data 4-25

Memory Depth/Record Length 4-26

To run and stop an acquisition 4-27

To take a single trace 4-27

To capture a single event 4-28

To use infinite persistence 4-29

To use infinite persistence to store multiple repetitive events 4-29

To clear the waveform display 4-30

Configuring the Mixed-Signal Oscilloscope 4-31

To display digital channels using Autoscale 4-31

nterpreting the digital waveform display 4-32

To display and rearrange the digital channels 4-33

To turn individual channels on and off 4-34

To force all channels on or all channels off 4-35

To change the display size of the digital channels 4-35

To change the logic threshold for digital channels 4-36

Using Digital Channels to Probe Circuits 4-37

Contents

Contents-4

Using Labels on the Mixed-Signal Oscilloscope 4-41

To turn the label display on or off 4-42

To assign a predefined label to a channel 4-43

To define a new label 4-44

To reset the label library to the factory default 4-46

Saving and Recalling Traces and Setups 4-47

To Autosave traces and setups 4-48

To save traces and setups to internal memory or to overwrite an existing

floppy disk file 4-49

To save traces and setups to a new file on the floppy disk 4-50

To recall traces and setups 4-51

Saving (printing) screen images to floppy disk 4-52

Recalling the factory default setup 4-53

5 Making Measurements

Capturing Data 5-3

To use delayed sweep 5-4

To reduce the random noise on a signal 5-6

To capture glitches or narrow pulses with peak detect and infinite

persistence 5-10

To use the Roll horizontal mode 5-11

To use the XY horizontal mode 5-12

Math Functions 5-16

Multiply 5-17

Subtract 5-18

Differentiate 5-19

ntegrate 5-21

FFT Measurement 5-23

Contents

Contents-5

Cursor Measurements 5-29

To make cursor measurements 5-30

Automatic Measurements 5-35

Making automatic measurements 5-36

Making time measurements automatically 5-37

Making Delay and Phase Measurements 5-40

Making voltage measurements automatically 5-41

Making overshoot and preshoot measurements 5-44

6 Utilities

To configure Quick Help languages 6-3

To configure a printer 6-5

To use the floppy disk 6-7

To set up the /O port to use a controller 6-8

To set the clock 6-10

To set up the screen saver 6-11

To perform service functions 6-12

To set other options 6-14

7 Performan e Chara teristi s

Performance Characteristics 7-3

Index

Contents-6

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