Agilent Technologies 54621A User manual

User’s Guide
Publication Number 54622-97029
March 2002
For Safety Information and egulatory information,
see the pages behind the Index.
© Copyright Agilent Technologies 2000-2002
All ights eserved
Agilent 54621A/22A/24A/41A/42A
Oscilloscopes and
Agilent 54621D/22D/41D/42D
Mixed-Signal Oscilloscopes

ii
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

iv

Contents
Contents-1
1 Getting Started
Setting up the Oscilloscope 1-4
To inspect package contents 1-5
To inspect options and accessories 1-8
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