Agilent Technologies 54621A User manual

Service Guide
Publication Number 54622-97037
December 2002
For Safety Information, arranties, and Regulatory information, see the pages
at the end of this book.
© Copyright Agilent Technologies 2000, 2002
All Rights Reserved
Agilent 54621A/22A/24A
Oscilloscope and
Agilent 54621D/22D
Mixed-Signal Oscilloscope
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ii
The Oscilloscope At a Glance
Choosefromavarietyofoscilloscopes forcapturing
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
•Agilent54621D -2-channel+16logicchannels,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
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
Run control keys begin and end data acquisition
• Run/Stop starts and stops continuous
acquisitions
• Single performs one acquisition
• Infinitepersistenceaccumulatesanddisplaysthe
results of multiple acquisitions
Horizontal Controls select sweep speed and delay
parameters
• Sweep speeds from 5 ns/div to 50 ns/div
• Delay control moves waveform display to point of
interest
• Delayed mode and delay allowzoomingin toshow
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, LIN, Sequence, SPI, TV, and USB
triggering
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 Integrated counter included with
Quick Meas.
• Use cursors to make manual measurements
• Save or recall measurement configurations or
previous results
• Autoscale performs simple one-button setup of
the oscilloscope
Softkeys extend the functionality of command keys
Selectmeasurementtypes,operatingmodes,trigger
specifications, label data, and more
Digital 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
• Press and hold any key front-panel key or softkey
to get help in 11 languages.
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iii
In his Book
This book provides the service information for the Agilent 54621A/22A/24A
Oscilloscope and the Agilent 54621D/22D Mixed-Signal Oscilloscope.
This manual is divided into these chapters:
Chapter 1 provides general information and specifications.
Chapter 2 shows you how to prepare the oscilloscope for use.
Chapter 3 gives performance tests.
Chapter 4 covers calibration and adjustment procedures.
Chapter 5 provides troubleshooting information.
Chapter 6 gives the procedures and techniques for replacing assemblies and
other parts.
Chapter 7 includes a list of replaceable parts, part ordering information, and
shipping information.
At the back of the book you will find Safety information, arranties, and
Regulatory information.
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iv
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Contents
Contents-1
1 General Information
To inspect package contents 1-3
To inspect options and accessories 1-6
Performance Characteristics 1-9
2 Preparing the Oscilloscope for Use
Setting up the Oscilloscope 2-3
To adjust the handle 2-4
To power-on the oscilloscope 2-5
To adjust the display intensity 2-6
To connect the oscilloscope probes 2-7
To compensate your probe 2-7
To use the digital probes (mixed-signal oscilloscope only) 2-8
To connect a printer 2-12
To connect an RS-232 cable 2-12
To verify basic oscilloscope operation 2-13
Getting started using the oscilloscope interface 2-14
Using Quick Help 2-16
Selecting a language for Quick Help when the oscilloscope starts up 2-16
Selecting a language for Quick Help after you have been operating the
oscilloscope 2-17
Loading a language from floppy disk 2-18
Cleaning the oscilloscope 2-19
3 Testing Performance
List of Test Equipment 3-3
To construct the test connector 3-4
To test the 54621D/22D Oscilloscope digital channels 3-5
To verify threshold accuracy 3-6
To verify voltage measurement accuracy 3-10
To verify bandwidth 3-13
To verify horizontal Dt and 1/Dt accuracy 3-15
To verify trigger sensitivity 3-17
Agilent 54622A/22D/24A Performance Test Record 3-20
Agilent 54621A/21D Performance Test Record 3-21
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Contents
Contents-2
4 Calibrating an A justing
To adjust the power supply 4-4
To perform User Cal 4-7
To adjust the oscilloscope display 4-8
5 Troubleshooting
Solving General Problems with the Oscilloscopes 5-3
If there is no trace display 5-3
If the trace display is unusual or unexpected 5-4
If you cannot see a channel 5-5
roubleshooting the Oscilloscope 5-6
To construct your own dummy load 5-7
To check out the oscilloscope 5-8
To check the Low Voltage Power Supply 5-11
To run the internal self-tests 5-13
6 Replacing Assemblies
To remove the cabinet 6-4
To remove the fan 6-5
To remove the floppy drive 6-6
To remove the front panel 6-7
To remove the display 6-8
To remove the system board 6-10
To remove the power supply 6-12
To remove the keyboard assembly 6-15
To remove the handle 6-16
7 Replaceable Parts
To order a replacement part 7-3
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1
General Information
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1-2
General Information
This chapter lists general information for the Agilent 54620-series
Oscilloscopes. It also includes performance characteristics and
specifications for the oscilloscopes.
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1-3
General Information
o 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).
• 54620-Series Oscilloscope (54621A, 21D, 22A, 22D, or 24A)
• 10074C 10:1 150 MHz passive probes with ID:
(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)
• IntuiLink for 54600-series Oscilloscopes software and RS-232 cable (for
54622A, 22D, or 24A).
IntuiLink is a indows application that makes it very easy for you to
download images, waveform data, or oscilloscope setups from the
oscilloscope to your pc using either Microsoft ord or Microsoft Excel. After
installation of IntuiLink, a tool bar in these Microsoft applications will make
connection and data transfer from the oscilloscope very simple.
IntuiLink software is available free on the web at:
www.agilent.com/find/5462xsw
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.
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1-4
General Information
• Agilent IntuiLink Data Capture (for 54622A, 22D, or 24A)
IntuiLink Data Capture is a standalone program for downloading waveform
data from the oscilloscopes to your PC via GPIB or RS-232 interface. It
provides the capability to transfer deep memory data out of the oscilloscope,
allowing up to 4MB (scope channels) and 8MB (logic channels). The
IntuiLink for 54600-Series limits the size of acquisition data available to a
maximum of 2,000 points regardless of actual number of acquisition points
on the screen. ith the IntuiLink Data Capture, the amount of points
transferred will be the actual number of acquisition points currently
displayed or you may select the number of points to download. It provides
the following functionality:
• Download waveform data and display the data as a simple chart
• Save the data as binary or text files
• Copy the chart and a selected portion of the data to the clipboard. The
maximum data saved to the clipboard is 50,000 point
• Load saved waveform data back into the application
IntuiLink Data Capture software is available free on the web at:
www.agilent.com/find/5462xsw
RS-232 cable may be ordered separately, part number 34398A
❏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.
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1-5
General Information
Figure 1-1
Package contents for 54620-Series Oscilloscopes
s
s1

10074C Probes
Power cord
Accessories pouch and
front-panel cover**
54620-61801 16-channel cable***
5959-9334 2”Probe
ground lead (qty 5)
5090-4833 Grabber
(qty 20)
IntuiLink for 54600-series
software, Data Capture
software and serial cable**
54620-Series Oscilloscope 54620-68701 digital probe kit*
* 54621D /22D only
** 54622A/22D/24A only
*
** The following additional replacement parts (not included) are available for the digital cable:
5959-9333 replacement probe leads (qty 5)
5959-9335 replacement pod grounds (qty 5)
01650-94309 package of probe labels
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1-6
General Information
o 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 54620-Series Oscilloscopes
are listed in tables 1-1 am 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.
1CM Rackmount kit (same as Agilent 1186A)
A6J ANSI Z540 compliant calibration service
See table 1-3 for power cord options
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1-7
General Information
Table 1-2 Accessories available
Model Description
01650-61607 16:16 logic cable and terminator (for use with 54621D/22D)
54620-68701 16:2 x 8 logic input probe assembly (shipped standard with 54621D/22D)
1146A 100 kHz 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
10073C 10:1 500 MHz probe with ID
10075A 0.5 mm IC clip kit
10076A 100:1, 4 kV 250 MHz probe with ID
10100C 50Ωtermination
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
N2758A CAN Trigger Module
N2771A 1000:1, 15 kV, 50 MHz high voltage probe
N2772A 20 MHz differential probe
N2773A Differential probe power supply
N2774A 50 MHz current probe, ac/dc
N2775A Power supply for N2774A
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1-8
General Information
Table 1-3. Power Cords
Plug Type Cable Part Number Plug Type Cable Part Number
Opt 900 (U.K.) 8120-1703 Opt 918 (Japan) 8120-4754
Opt 901 (Australia) 8120-0696 Opt 919 (Israel) 8120-6799
Opt 902 (Europe) 8120-1692 Opt 920 (Argentina) 8120-6871
Opt 903 (U.S.A.) 8120-1521 Opt 921 (Chile) 8120-6979
Opt 906 (Switzerland) 8120-2296 Opt 922 (China) 8120-8377
Opt 912 (Denmark) 8120-2957 Opt 927 (Thailand) 8120-8871
Opt 917 (Africa) 8120-4600
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1-9
General Information
Acquisition: Analog Channels
Performance Characteristics
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and
±10 °C from firmware calibration temperature.
Acquisition: Analog Channels
Max Sample rate 200 MSa/s
Max Memory Depth 4 MB interleaved, 2 MB each channel
Vertical Resolution 8 bits
Peak Detection 5 ns
Averages selectable from 2, 4, 8, 16, 32, 64 ...to 16383
High Resolution Mode 12 bits of resolution when ≥500 us/div, average mode with average = 1
Filter: Sinx/x interpolation (single shot BW = sample rate/4 or bandwidth of scope, whichever
is less) with vectors on.
Acquisition: Digital Channels (on 54621D and 54622D only)
Max Sample Rate 400 MSa/s
Max Memory Depth 8 MB
Vertical Resolution 1 bit
Glitch Detection (min pulse width) 5 ns
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1-10
General Information
Vertical System: Analog Channels
Vertical System: Analog Channels
Analog channels 54621A/21D, 54622A/22D: Ch1 and 2 simultaneous acquisition
54624A: Ch 1, 2, 3, and 4 simultaneous acquisition
Bandwidth (-3dB)* 54621A/22D: dc to 60 MHz
54622A/22D/24A: dc to 100 MHz
ac coupled 54621A/21D: 3.5 Hz to 60 MHz
54622A/22D/24A: 3.5 Hz to 100 MHz
Calculated rise time
(= 0.35/bandwidth) 54621A/22D: ~5.8 ns 54622A/22D/24A: ~3.5 ns
Single Shot Bandwidth 50 MHz
Range11 mV/div to 5 V/div
Maximum Input 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
Offset Range ±5 V on ranges <10 mV/div
±25 V on ranges 10 mV/div to 199 mV/div
±100 V on ranges ≥200 mV/div
Dynamic Range Lesser of ±8 div or ±32 V
Input Resistance 1 MΩ±1%
Input Capacitance ~ 14 pF
Coupling ac, dc, ground
BW Limit ~ 20 MHz selectable
Channel-to-Channel Isolation
(with channels at same V/div) dc to 20 MHz > 40 dB 20 MHz to max bandwidth > 30 dB
Probes 10:1 10074C shipped standard for each analog channel
Probe ID (Agilent/HP &
Tek Compatible) Auto probe sense
11 mV/div is a magnification of 2 mV/div setting. For vertical accuracy calculations, use full scale of 16 mV for 1 mV/div sensitivity setting.
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and
±10 °C from firmware calibration temperature.
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1-11
General Information
Vertical System: Analog Channels (continued)
Vertical System: Analog Channels (continued)
ESD Tolerance ±2 kV
Noise Peak-to-Peak 2% full scale or 1 mV, whichever is greater
Common Mode Rejection Ratio 20 dB @ 50 MHz
DC Vertical Gain Accuracy*1±2.0% full scale
DC Vertical Offset Accuracy < 200 mV/div: ±0.1 div ±1.0 mV ±0.5% offset
≥200 mV/div: ±0.1 div ±1.0 mV ±1.5% offset value
Single Cursor Accuracy1±{DC Vertical Gain Accuracy + DC Vertical Offset
Accuracy + 0.2% full scale (~1/2 LSB) }
Example: For 50 mV signal, scope set to 10 mV/div (80 mV full scale), 5 mV offset,
accuracy = ±{2.0%(80mV) + 0.1 (10 mV) + 1.0 mV + 0.5% (5 mV) + 0.2%(80 mV)} = ± 3.78 mV
Dual Cursor Accuracy*1±{DC Vertical Gain Accuracy + 0.4% full scale (~1 LSB)}
Example: For 50 mV signal, scope set to 10 mV/div (80 mV full scale), 5 mV offset,
accuracy = ±{2.0%(80 mV) + 0.4%(80 mV)} = ±1.92 mV
11 mV/div is a magnification of 2 mV/div setting. Forvertical accuracy calculations, use full scale of 16 mV for 1 mV/div sensitivitysetting.
Vertical System: Digital Channels (54621D and 54622D only)
Number of Channels 16 Digital –labeled D15 –D0
Threshold Groupings Pod 1: D7 - D0
Pod 2: D15 - D8
Threshold Selections TTL, CMOS, ECL, user-definable (selectable by pod)
User-Defined Threshold Range ±8.0 V in 10 mV increments
Maximum Input
Voltage ±40 V peak CAT I
Threshold Accuracy* ±(100 mV + 3% of threshold setting)
Input Dynamic Range ±10 V about threshold
Minimum Input Voltage Swing 500 mV peak-to-peak
Input Capacitance ~ 8 pF
Input Resistance 100 kΩ±2% at probe tip
Channel-to-Channel Skew 2 ns typical, 3 ns maximum
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and
±10 °C from firmware calibration temperature.
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1-12
General Information
Horizontal
Horizontal
Range 5 ns/div to 50 s/div
Resolution 25 ps
Vernier 1-2-5 increments when off, 25 minor increments between major settings when on
Reference Positions Left, Center, Right
Delay Range
Pre-trigger (negative delay)
Post-trigger (positive delay) Greater of 1 screen width or 10 ms 500 seconds
Analog Delta-t Accuracy
Same Channel*
Channel-to-Channel
±0.01% reading ±0.1% screen width ±40 ps
Example: for signal with pulse width of 10 us, scope set to 5 us/div (50 us screen width),
delta-t accuracy = ±{.01%(10 us) + 0.1% (50 us) + 40 ps} = 51.04 ns
±0.01% reading ±0.1% screen width ±80 ps
Digital Delta-t Accuracy
Same Channel
Channel-to-Channel
(non-Vernier settings)
±0.01% reading ±0.1% screen width ±(1 digital sample period, 2.5 or 5 ns based on
sample rate of 200/400 MSa/s)
Example: for signal with pulse width of 10 us, scope set to 5 us/div (50 us screen width),
and single pod active (400 MSa/s), delta-t accuracy = ±{.01%(10 us) + 0.1% (50 us) + 2.5
ns} = 53.5 ns
±0.01% reading ±0.1% screen width ±(1 digital sample period, 2.5 or 5 ns)
±chan-to-chan skew (2 ns typical, 3 ns maximum)
Delay Jitter 10 ppm
RMS Jitter 0.025% screen width + 30 ps
Modes Main, Delayed, Roll, XY
XYZ blanking
Bandwidth
Phase error @ 1 MHz
1.4 V blanks trace (use External trigger)
Max bandwidth
1.8 degrees
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and
±10 °C from firmware calibration temperature.
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1-13
General Information
Trigger System
Trigger System
Sources: 54621A/22A: Ch 1, 2, line, ext
54621D/22D: Ch 1, 2, line, ext, D15 - D0
54624A: Ch 1, 2, 3, 4, line, ext
Modes Auto, Auto level, Triggered (normal), Single
Holdoff Time ~60 ns to 10 seconds
Selections Edge, Pattern, Pulse Width, CAN, Duration, I2C, Sequence, SPI, TV, USB
Edge Trigger on a rising or falling edge of any source.
Pattern Trigger on a pattern of high, low, and don’t care levels and a rising or falling edge
establishedacrossany of thesources. Theanalogchannel’s high or low level is defined
by that channel’s trigger level.
Pulse Width Trigger when a positive- or negative-going pulse is less than, greater than, or within a
specified range on any of the source channels.
Minimum pulse width setting: 5 ns
Maximum pulse width setting: 10 s
CAN Trigger on CAN (Controller Area Network) version 2.0A and 2.0B signals. It can trigger
on the Start of Frame bit of a data frame, a remote transfer request frame, or an overload
frame.
Duration Trigger on a multi-channel pattern whose time duration is less than a value, greater
than a value, greater than a time value with a timeout value, or inside or outside of a set
of time values.
Minimum duration setting: 5 ns
Maximum duration setting: 10 s
I2C Triggeron I2C (Inter-IC bus) serial protocol at a start/stop condition, a restart, a missing
acknowledge, or user defined frame with address and/or data values. Also trigger on
Missing Acknowledge, Restart, EEPROM read, and 10-bit write.
LIN Trigger on LIN (Local Interconnect Network) sync break at beginning of message frame.
Sequence Find event A, trigger on event B, with option to reset on event C or time delay.
SPI Trigger on SPI (Serial Peripheral Interface) a data pattern during a specific framing
period. Support positive and negative Chip Select framing ad well as clock Idle framing
and user-specified number of bits per frame.
USB Trigger on USB (Universal Serial Bus) Start of Packet, End of Packet, Reset Complete,
Enter Suspend, or Exit Suspend on the differential USB data lines. USB low speed and
high speed are supported.
TV Trigger on any analog channel for NTSC, PAL, PAL-M, or SECAM broadcast standards
on either positive or negative composite video signals. Modes supported include Field
1, Field 2, or both, all lines, or any line within a field. Also supports triggering on non-
interlaced fields. TV trigger sensitivity: 0.5 division of synch signal.
Autoscale Finds and displays all active analog and digital (for 54621D/54622D) channels, sets edge
trigger mode on highest numbered channel, sets vertical sensitivity on analog channels
andthresholdsondigitalchannels,time base todisplay~1.8periods. Requiresminimum
voltage >10 mVpp, 0.5% duty cycle and minimum frequency >50 Hz.
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and
±10 °C from firmware calibration temperature.
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1-14
General Information
Analog Channel Triggering
Analog Channel Triggering
Range (Internal) ±6 div from center screen
Sensitivity* Greater of 0.35 div or 2.5 mV
Coupling AC (~3.5 Hz), DC, noise reject, HF reject and LF reject (~ 50 kHz)
Digital (D15 - D0) Channel Triggering (54621D and 5462 2D)
Threshold Range (user-defined) ±8.0 V in 10 mV increments
Threshold Accuracy* ±(100 mV + 3% of threshold setting)
Predefined Thresholds TTL = 1.4 V, CMOS = 2.5 V, ECL = -1.3 V
External (EXT) Triggering
Input Resistance 1 MΩ±3%
Input Impedance ~ 14 pF
Maximum Input 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
Range ±10 V
Sensitivity dc to 25 MHz, < 75 mV
25 MHz to max bandwidth, < 150 mV
Coupling AC (~ 3.5 Hz), DC, noise reject, HF reject and LF reject (~ 50 kHz)
Probe ID (Agilent/HP & Tek
Compatible) Auto probe sense for 54621A/22A
* Denotes Warranted Specifications, all others are typical. Specifications are valid after a 30-minute warm-up period and
±10 °C from firmware calibration temperature.
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