Agilent Technologies 54622A User manual

User’s Guide
Publication Number 54622-97014
August 2000
For Safety nformation, Warranties, and Regulatory information,
see the pages behind the ndex.
© Copyright Agilent Technologies 2000
All Rights Reserved
Agilent 54621A/22A/24A
Oscilloscopes and
Agilent 54621D/22D
Mixed-Signal Oscilloscopes

ii
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

iv

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