User’s Guide
Publication Number 54622-97002
March 2000
For Safety Information, Warranties, and Regulatory information,
see the pages behind the Index.
© Copyright Agilent Technologies 2000
All Rights Reserved
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
Digital channel controls select, position,
and label inputs (54621D/22D)
• Turn channels on or off individually or
in groups of 8
• Rearrange order of channels to 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 onebutton setup of the oscilloscope
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, I
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 8channel 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
2
C, and
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)
ii
Built in Quick Help system
• Press and hold any key front-panel key
or softkey to get help in 9 languages.
In 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
iii
iv
Contents
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
Important Oscilloscope Considerations 2-3
54600-series Oscilloscope1 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-1
Contents
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 Oscilloscope
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 I2C triggering 3-20
To use sequence triggering 3-23
To use TV triggering 3-29
The Trig Out connector 3-39
Contents-2
4 MegaZoom Concepts and Oscilloscope 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/Infinite 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
Contents
Configuring the Mixed-Signal Oscilloscope 4-31
To display digital channels using Autoscale 4-31
Interpreting 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-3
Contents
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
Integrate 5-21
FFT Measurement 5-23
Contents-4
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 voltage measurements automatically 5-40
Making overshoot and preshoot measurements 5-43
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 I/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 Performance Characteristics
Contents
Performance Characteristics 7-3
Index
Contents-5
Contents-6
1
Getting Started
Getting Started
When you use the oscilloscopes to help test and troubleshoot your
systems, you may do the following:
• Prepare the oscilloscope by connecting it to power and setting up the
handle and screen intensity as desired.
• Define the measurement problem by understanding the parameters
of the system you wish to test, and the expected system behavior.
• Set up channel inputs by connecting the probes to the appropriate
signal and ground nodes in the circuit under test.
• Define the trigger to reference the waveform data at a specific event
of interest.
• Use the oscilloscope to acquire data, either in continuous or singleshot fashion.
• Examine the data and make measurements on it using various
features.
• Save the measurement or configuration for later re-use or comparison
with other measurements.
Repeat the process as necessary until you verify correct operation or
find the source of the problem.
MegaZoom Technology Operates with Untriggered Data
With the MegaZoom technology built into the oscilloscope, you can
operate the oscilloscope with untriggered data. All you do is press
Single while in Auto trigger mode, then examine the data to set up a
or
trigger.
1-2
Run
Getting Started
The oscilloscope’s high-speed display can be used to isolate infrequently
changing signals. You can then use the characteristics of these signals
to help refine the trigger specification. For more information on
triggering, data acquisition, data examination and measurement, and
configuration, see the later chapters.
Using the Oscilloscope, and Refining the Trigger Specification
1-3
Setting up the Oscilloscope
To prepare your oscilloscope for use, you need to do the following tasks.
After you have completed them, you will be ready to use the oscilloscope.
In the following topics you will:
• inspect package contents
• inspect options and accessories
• learn how to clean the oscilloscope
• adjust the handle
• power-on the oscilloscope
• adjust the display intensity
• connect the oscilloscope probes
• connect the digital probes (with 54621D and 54622D)
• connect a printer
• connect a RS-232 cable
• verify basic oscilloscope operation
• get started using the oscilloscope interface
• learn how to use Quick Help
1-4
Getting Started
To inspect package contents
To inspect package contents
❏ Inspect the shipping container for damage.
If your shipping container appears to be damaged, keep the shipping container
or cushioning material until you have inspected the contents of the shipment
for completeness and have checked the oscilloscope mechanically and
electrically.
❏ Verify that you received the following items and any optional accessories in
the oscilloscope packaging (see figure following).
• 54600-Series Oscilloscope (54621A, 21D, 22A, 22D, or 24A)
• 10074C 10:1 passive probes:
(2) for 54621A, 21D, 22A, or 22D oscilloscopes
(4) for 54624A oscilloscope
• 54620-68701 digital probe kit (for 54621D or 22D)
• Accessory pouch and front-panel cover (standard for 54622A, 22D, and 24A)
(optional on 54621A and 21D; order N2726A)
• Power cord (see table 1-3)
• BenchLinkXL 54600 software and RS-232 cable (for 54622A, 22D, or 24A)
BenchLink XL 54600 software is available free on the web at:
www.agilent.com/go/megazoom
RS-232 cable may be ordered separately, part number 34398A
If anything is missing, contact your nearest Agilent Sales Office. If the shipment
was damaged, contact the carrier, then contact the nearest Agilent Sales Office.
❏ Inspect the oscilloscope
• If there is mechanical damage or a defect, or if the oscilloscope does not
operate properly or does not pass the performance tests listed in the Service
Guide, notify your Agilent Sales Office.
• If the shipping container is damaged, or the cushioning materials show signs
of stress, notify the carrier and your Agilent Sales Office. Keep the shipping
materials for the carrier’s inspection. The Agilent Sales Office will arrange
for repair or replacement at Agilent’s option, without waiting for claim
settlement.
1-5
Getting Started
To inspect package contents
54600-Series Oscilloscope
Accessories pouch and
front-panel cover**
Power cord
54620-68701 digital probe kit*
54620-61801 16-channel cable
BenchlinkXL 54600 software
and serial cable**
5959-9334 2” Ground
lead (qty 5)
5090-4356 Clip
(qty 20)
10074C Probes
54621D /22D only
* 54622A/22D/24A only
Package contents for 54600-Series Oscilloscopes
1-6
s
sa
Getting Started
To inspect options and accessories
To inspect options and accessories
❏ Verify that you received the options and accessories you ordered and that none
were damaged.
If anything is missing, contact your nearest Agilent Sales Office. If the shipment
was damaged, or the cushioning materials show signs of stress, notify the carrier
and your Agilent Sales Office.
Some of the options and accessories available for the 54600-Series Oscilloscopes
are listed in tables 1-1 and 1-2. Contact your Agilent Sales Office for a complete
list of options and accessories.
Table 1-1
Options available
Option Description
003 Shielding Option for use in severe environments or with sensitive devices under
test–shields both ways (in and out):
RS-03 magnetic interface shielding added to CRT, and
RE-02 display shield added to CRT to reduce radiated interference.
0B0 Delete manuals
A6J ANSII Z540 compliant calibration with test data
W32 3-year, customer-return calibration service
W34 3-year, customer-return standard compliance calibration service
W50 Additional 2-year warranty (5 years total)
W52 5-year, customer-return calibration service
W54 5-year customer-return standard compliance calibration service
See table 1-3 for power cord options
1-7
Getting Started
To inspect options and accessories
Table 1-2
Accessories available
Model Description
1146A Current probe, ac/dc
1183A Testmobile scope cart
1185A Carrying Case
1186A Rackmount Kit
10070C 1:1 Passive Probe with ID
10072A Fine-pitch probe kit
10073B 10:1 500 MHz probe with ID
10075A 0.5 mm IC clip kit
10076A 100:1, 4 kV 250 MHz probe with ID
10085A 16:16 logic cable and terminator (for use with 54621D/22D)
10089A 16:2 x 8 logic input probe assembly (shipped standard with 54621D/22D)
10100C 50
10833A GPIB cable, 1 m long
34398A RS-232 cable (standard with 100 MHz models)
E2613B 0.5 mm Wedge probe adapter, 3-signal, qty 2
E2614A 0.5 mm Wedge probe adapter, 8-signal, qty 1
E2615B 0.65 mm Wedge probe adapter, 3-signal, qty 2
E2616A 0.65 mm Wedge probe adapter, 8-signal, qty 1
E2643A 0.5 mm Wedge probe adapter, 16-signal, qty 1
E2644A 0.65 mm Wedge probe adapter, 16-signal, qty 1
N2726A Accessory pouch and front-panel cover (standard with 100 MHz models)
N2727A Thermal printer and pouch
N2728A 10 rolls of thermal printer paper
N2757A GPIB Interface Module
N2772A 20 MHz differential probe
N2773A Differential probe power supply
Ω Termination
1-8
Getting Started
To inspect options and accessories
Table 1-3
Power Cords
Plug Type Cable Part No. Plug Description Length in/cm Color
Opt 903 (U.S.A.)
124V **
8120-1378 Straight (NEMA5-15P*) 90/228 Jade Gray
Opt 900 (U.K.)
250V
Opt 901 (Australia)
250V
Opt 902 (Europe)
250V
Opt 906 (Switzerland)
250V
Opt 912 (Denmark)
220V
Opt 917 (Africa
)250V
Opt 918 (Japan)
100V
8120-1351 Straight (BS136A*) 90/228 Gray
8120-1369 Straight (NZSS198/ASC*) 79/200 Gray
8120-1689
8120-2857
8120-2104 Straight (SEV1011*) 79/200 Mint Gray
8120-2957 Straight (DHCK107*) 79/200 Mint Gray
8120-4600 Straight (SABS164) 79/200 Jade Gray
8120-4753 Straight Miti 90/230 Dark Gray
Straight (CEE7-Y11*)
Straight (Shielded)
79/20079/200 Mint Gray
Coco Brown
* Part number shown for plug is industry identifier for plug only.
Cable part number shown is Agilent part number for complete cable including plug.
** These cords are included in the CSA certification approval for the equipment.
1-9
Getting Started
To clean the oscilloscope
To clean the oscilloscope
1 Disconnect power from the instrument.
CAUTION Do not use too much liquid in cleaning the oscilloscope. Water can enter the
front-panel keyboard, control knobs, or floppy disk damaging sensitive
electronic components.
2 Cl ean t he os cillos cope w ith a s of t cloth damp ened w ith a mild so ap and
water solution.
3 Make sure that the instrument is completely dry before reconnecting to
a power source.
1-10
Getting Started
To adjust the handle
To adjust the handle
1 Grasp the handle pivot points on each side of the instrument and pull
the pivot out until it stops.
54622D
Agilent
s
MIXED SIGNAL OSCILLOSCOPE
CHANNEL
Select
Time/Div
150
5 ns1 s
INPUTS
2 Without releasing the pivots, swivel the handle to the desired position.
Then release the pivots. Continue pivoting the handle until it clicks into
a set position.
1-11
Getting Started
To power-on the oscilloscope
To power-on the oscilloscope
1 Connect the power cord to the rear of the oscilloscope, then to a
suitable ac voltage source.
The oscilloscope power supply automatically adjusts for input line voltages in
the range 100 to 240 VAC. Therefore, you do not need to adjust the input line
voltage setting. The line cord provided is matched to the country of origin.
Ensure that you have the correct line cord. See table 1-3
2 Press the power switch.
Tr i gg er ou t
~5V
Some front panel key light will come on and the oscilloscope will be operational
in about 5 seconds.
1-12
Figure 1-1
Getting Started
To adjust the display intensity
To adjust the display intensity
The Intensity control is at the lower left corner of the front panel.
• To decrease display intensity, rotate the Intensity control counterclockwise.
• To increase display intensity, rotate the Intensity control clockwise.
BrightDim
Intensity control
The grid or graticule intensity on the display can be adjusted by pressing the
Display key, then turn the Entry knob (labeled on the front panel) to adjust
the Grid control.
1-13
Getting Started
To connect the oscilloscope probes
To connect the oscilloscope probes
1 Connect the 10074C 1.5-meter, 10:1 oscilloscope probe to the analog
channel 1 or 2 BNC connector input on the oscilloscope, or channel 1
through channel 4 on the 54624A.
Maximum input voltage for analog inputs:
CAT I 300 Vrms, 400 Vpk
CAT II 100 Vrms, 400 Vpk
with 10074C 10:1 probe: CAT I 500 Vpk, CAT II 400 Vpk
2 Connect the retractable hook tip on the probe tip to the circuit point of
interest. Be sure to connect the probe ground lead to a ground point on
the circuit.
The probe ground lead is connected to the oscilloscope chassis and the ground
wire in the power cord. If you need to connect the ground lead to a point in the
circuit that cannot be grounded to power ground, consider using a differential
probe.
1-14
Getting Started
To use the digital probes (mixed-signal oscilloscope only)
To use the digital probes (mixed-signal oscilloscope
only)
1 If you feel it’s necessary, turn off the power supply to the circuit under
test.
Off
Turning off power to the circuit under test would only prevent damage that
might occur if you accidentally short two lines together while connecting
probes. You can leave the oscilloscope powered on because no voltage appears
at the probes.
2 Connect the digital probe cable to D15 - D0 connector on the front panel
of the mixed-signal oscilloscope. The digital probe cable is indexed so
you can connect it only one way. You do not need to power-off the
oscilloscope.
Use only the Agilent part number 54620-68701 digital probe kit supplied with
the mixed-signal oscilloscope. Additional probe kits may be ordered by
specifying Agilent part number 10089A.
1-15
Getting Started
To use the digital probes (mixed-signal oscilloscope only)
3 Connect a clip to one of the probe leads. Be sure to connect the ground
lead. (Other probe leads are omitted from the figure for clarity.)
Clip
4 Connect the clip to a node in the circuit you want to test.
1-16
Getting Started
To use the digital probes (mixed-signal oscilloscope only)
5 For high-speed signals, connect a ground lead to the probe lead, connect
a clip to the ground lead, and attach the clip to ground in the circuit
under test.
Signal Lead
Ground Lead
Clip
6 Connect the ground lead on each set of channels, using a probe clip.
The ground lead improves signal fidelity to the instrument, ensuring
accurate measurements.
Channel
Pod Ground
Circuit
Ground
1-17
Getting Started
To use the digital probes (mixed-signal oscilloscope only)
7 Repeat steps 3 through 6 until you have connected all points of interest.
Signals
Ground
8 If you need to remove a probe lead from the cable, insert a paper clip
or other small pointed object into the side of the cable assembly, and
push to release the latch while pulling out the probe lead.
Replacement parts are available. See the Replaceable Parts chapter in the
Service Guide for details.
1-18
Getting Started
To connect a printer
To connect a printer
The oscilloscope connects to a parallel printer through the Parallel output
connector on the rear of the oscilloscope. You will need a parallel printer cable
to connect to the printer.
1 Attach the 25-pin small “D” connector to the Parallel output connector
on the rear of the oscilloscope. Tighten the thumbscrews on the cable
connector to secure the cable.
2 Attach the larger 36-pin “D” connector to the printer.
3 Set up the printer configuration on the oscilloscope.
aPress the Utility key, then press the Print Confg softkey.
bPress the Print to: softkey and set the interface to Parallel.
cPress the Format softkey and select your printer format from the list.
For more information on printer configuration, refer to the “Utilities” chapter.
To connect an RS-232 cable
The oscilloscope can be connected to a controller or a pc through the RS-232
connector on the rear of the oscilloscope. An RS-232 cable is shipped with each
54622A/22D/24A oscilloscope and may be purchased for the 54621A/21D
oscilloscopes.
1 Attach the 9-pin “D” connector on the RS-232 cable to the RS-232
connector on the rear of the oscilloscope. Tighten the thumbscrews on
the cable connector to secure the cable
2 Attach the other end of the cable to your controller or pc.
3 Set up the RS-232 configuration on the oscilloscope.
aPress the Utility key, then press the I/O softkey.
bPress the Controller softkey and select RS-232.
cPress the Baud softkey and set the baud rate to match your controller or pc.
dPress the XON DTR softkey and set the handshake to match your controller
or pc.
For more information on RS-232 configuration, refer to the “Utilities” chapter.
1-19
Getting Started
To verify basic oscilloscope operation
To verify basic oscilloscope operation
1 Connect an oscilloscope probe to channel 1.
2 Attach the probe to the Probe Comp output on the lower-right side of
the front panel of the oscilloscope.
Use a probe retractable hook tip so you do not need to hold the probe.
3Press the Save/Recall key on the front panel, then press the Default Setup
softkey under the display.
The oscilloscope is now configured to its default settings.
4Press the Autoscale key on the front panel.
You should then see a square wave with peak-to-peak amplitude of about 5
divisions and a period of about 4 divisions as shown below. If you do not see
the waveform, ensure your power source is adequate, the oscilloscope is
properly powered-on, and the probe is connected securely to the front-panel
channel input BNC and to the Probe Comp calibration output.
Verifying Basic Oscilloscope Operation
1-20
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