Agilent Technologies 54621A Manuale utente

User’s Guide

Publication Number 54622-97029

March 2002

For Safety Information and egulatory information,

see the pages behind the Index.

All ights eserved

Agilent 54621A/22A/24A/41A/42A

Oscilloscopes and

Agilent 54621D/22D/41D/42D

Mixed-Signal Oscilloscopes

The Oscilloscopes at a Glance

Choose from a variety of oscilloscopes for capturing

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

•Agilent 54621D - 2-channel +16 logic channels, 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

with 2 GSa/s sample rate and 4 MBytes of MegaZoom

deep memory per channel.

•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 (54621D/22D/41D/42D)

channels displayed in main and delayed mode

• Indicators for channel, time base, digital

(54621D/22D/41D/42D)channelactivity,triggerand

acquisition status

• Softkey labels

• Measurement results

Digital channel controls select, position, and label

inputs (54621D/22D/41D/42D)

• Turnchannelsonoroffindividuallyoringroupsof8

• 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 startsand stops continuous acquisitions

• Single performs one acquisition

• Infinite persistence accumulates and displays the

results of multiple acquisitions

General controls measure, save and restore results,

and configure the oscilloscope

• Waveform math including FFT, subtract, multiply,

integrate, and differentiate

• UseQuickMeastomakeautomaticmeasurements

Integrated counter included with Quick Meas.

• Use cursors to make manual measurements

• Save or recall measurement configurations or

previous results

• Autoscaleperformssimpleone-buttonsetupofthe

oscilloscope

Horizontal Controls select sweep speed and delay

parameters

• Sweep speeds from 5 ns/div to 50 ns/div (54620-

series) and 1 ns/div to 50 s/div (54640-series)

• 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)

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, Sequence, SPI, TV, and USB

triggering

Softkeys extend the functionality of command keys

Select measurement types, operating modes, trigger

specifications, label data, and more

Digital channel inputs through a flexible probing

system (54621D/22D/41D/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.

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 I/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 1-8

To clean the oscilloscope 1-11

To adjust the handle 1-12

To power-on the oscilloscope 1-13

To adjust the waveform intensity 1-14

To connect the oscilloscope analog probes 1-15

To compensate your analog probe 1-16

To use the digital probes (mixed-signal oscilloscope only) 1-17

To connect a printer 1-21

To connect an S-232 cable 1-21

To verify basic oscilloscope operation 1-22

Getting started using the oscilloscope interface 1-23

Using Quick Help 1-25

Selecting a language for Quick Help when the oscilloscope starts up 1-25

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

oscilloscope 1-26

Loading an updated language file from floppy disk 1-27

2 Front-Panel Overview

Important Oscilloscope Considerations 2-3

54620/40-series Oscilloscope Front Panels 2-7

Front-Panel Operation 2-10

Interpreting 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: Normal, Auto, Auto Level 3-4

To select trigger Coupling 3-6

To select Noise eject and HF eject 3-6

To set holdoff 3-7

External Trigger Input 3-9

Trigger Types 3-11

To use Edge triggering 3-12

To use Pulse Width triggering 3-14

To use Pattern triggering 3-17

To use CAN triggering 3-19

To use Duration triggering 3-21

To use I2C triggering 3-24

To use Sequence triggering 3-29

To use SPI triggering 3-35

To use TV triggering 3-40

To use USB triggering 3-50

The Trigger Out connector 3-52

Contents

Contents-3

4 MegaZoom Con epts and Os illos ope Operation

MegaZoom Concepts 4-3

Deep Memory 4-4

Oscilloscope esponsiveness 4-5

Display Update ate 4-6

To setup the Analog channels 4-7

To setup the Horizontal time base 4-11

Acquisition Modes 4-17

Display modes 4-21

Pan and Zoom 4-23

To pan and zoom a waveform 4-24

Run/Stop/Single/ nfinite Persistence Operation 4-25

Acquiring Data 4-26

Memory Depth/ ecord Length 4-27

To run and stop an acquisition 4-28

To take a single trace 4-28

To capture a single event 4-29

To use infinite persistence 4-30

To use infinite persistence to store multiple repetitive events 4-30

To clear the waveform display 4-31

Configuring the Mixed-Signal Oscilloscope 4-32

To display digital channels using Autoscale 4-32

Interpreting the digital waveform display 4-33

To display and rearrange the digital channels 4-34

To turn individual channels on and off 4-35

To force all channels on or all channels off 4-36

To change the display size of the digital channels 4-36

To change the logic threshold for digital channels 4-37

Using Digital Channels to Probe Circuits 4-38

Using Labels on the Mixed-Signal Oscilloscope 4-42

To turn the label display on or off 4-43

To assign a predefined label to a channel 4-44

To define a new label 4-45

To reset the label library to the factory default 4-47

Contents

Contents-4

Saving and Recalling Traces and Setups 4-48

To Autosave traces and setups 4-49

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

floppy disk file 4-50

To save traces and setups to a new file on the floppy disk 4-51

To recall traces and setups 4-52

Saving (printing) screen images to floppy disk 4-53

ecalling the factory default setup 4-54

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 oll horizontal mode 5-12

To use the XY horizontal mode 5-13

Math Functions 5-17

Math Scale and Offset 5-18

Multiply 5-19

Subtract 5-20

Differentiate 5-21

Integrate 5-23

FFT Measurement 5-25

Cursor Measurements 5-31

To make cursor measurements 5-32

Automatic Measurements 5-37

Making automatic measurements 5-38

Making time measurements automatically 5-39

Making Delay and Phase Measurements 5-43

Making voltage measurements automatically 5-45

Making overshoot and preshoot measurements 5-48

Contents

Contents-5

6 Utilities

To configure Quick Help languages 6-3

To update your instrument to the latest application software 6-5

To configure a printer 6-6

To use the floppy disk 6-8

To set up the I/O port to use a controller 6-9

To set the clock 6-11

To set up the screen saver 6-12

To perform service functions 6-14

To set other options 6-16

7 Performan e Chara teristi s

Agilent 54620-series Performance Characteristics 7-3

Agilent 54640-series Performance Characteristics 7-13

Contents-6

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