Agilent Technologies Infiniium 80000 Series User manual

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Service Guide
Publication Number D8104-97006
September 2006
©Copyright Agilent Technologies 2006
All Rights Reserved.
80000 Series Infiniium Oscilloscopes

2
The Agilent Technologies Infiniium Oscilloscope at a Glance
Ease of use with high performance
The Agilent Technologies Infiniium oscilloscopes
combine unprecedented ease-of-use with high-
performance digitizing oscilloscope functionality
to simplify your design and analysismeasurement
tasks.
• Traditional oscilloscope front-panel interface
provides direct access to the controls needed
for most troubleshooting tasks.
• Graphical user interface with menus,
windows, dialogs, and toolbars provides easy
access to dozens of configuration and
analysis tools, ensuring you can set up and
make the most complex measurements.
• All models offer 20 GSa/s sampling rate on all
four channels, or 40 GSa/s sampling rate in
two-channel mode.
• Models with bandwidths from 2 GHz to 13 GHz.
Display shows waveforms and graphical user
interface
• Graphical interface allows direct interaction
with waveforms, including drag-and-drop
positioning and instant waveform zoom.
• Touchscreen display allows oscilloscope
operation without an external pointing device.
• Waveforms displayed in color, making
correlation easy.
• Current configuration parameters displayed
near the waveform display and are color-
coded to make identification easy.
• Graphical interface menus and toolbars
simplify complex measurement setups.
Horizontalcontrols set sweep speed and position
• Main sweep speeds from 5 ps/div to 20 s/div.
• Delayed sweep speeds from 1 ps/div to main
time base setting.
• Intensified waveforms on main sweep
window make it easy to see what will appear
in delayed sweep window.
Acquisition and general controls start and stop
the scope and do basic setup
• Run and stop controls for continuous or
single-shot acquisitions.
• Clear display before one or more acquisitions.
• Default setup and Autoscale set initial
configuration.
Hard disk drive and USB 2.0 port for saving and
restoring setups and measurement results
• Store measurement displays for inclusion in
reports and test setup guides.
• Store oscilloscope setups to repeat tests
another time.
• Hard disk stores oscilloscope operating
system.
Trigger setup controls set mode and basic
parameters
• Select Edge, Glitch, or Advanced Modes.
• Choose input source and slope.
• Use graphical user interface to simplify
configuration of pattern, state, delay, and
violation trigger modes.
• Use auxiliary trigger to increase triggering
flexibility.
Vertical controls set attenuation, and position
• Input attenuation adjustable from 1 mV/div to
1 V/div.
• Color-coded knobs make it easy to find the
controls that affect each waveform.
Marker and quick measurements help measure
waveform parameters
• Waveform markers A and B to check voltage
or ∆-time at any point on the displayed
waveform.
• Quick Meas executes up to four predefined
measurements instantly.
Service Policy
The service policy of this instrument requires
replacing defective assemblies. Some
assemblies can be replaced on an exchange
basis.

3
80000 Series Oscilloscope Front Panel
Power
Acquisition and
General Controls
Horizontal
Controls
Marker and Quick
Measurement
Controls
Vertical
Controls
Vertical
Inputs
Trigger
Setup
AutoProbe
Interface
Touchscreen
Display
USB 2.0
Port
Aux OutTrigger
Setup

4
80000 Series Oscilloscope Rear Panel
Note: Your instrument’s rear panel configuration may differ from this diagram.
LAN
Port
GPIB Interface
Mouse
and
Keyboard
Ports
Video
Output
CD-ROM
Drive
USB
Ports
Line In
Line Out
Microphone
TTL
Trig
Out
AC Power
Input
Aux
Trig
In
Parallel
Printer
Port
RS232
COM
Port
Rear
Foot
Kensington
Equipment
Lock
Optional
Removable
Hard Drive
10 MHz
Ref In
10 MHz
Ref Out

5
In This Book
This book provides the service documentation for the Agilent Technologies 80000 Series
oscilloscopes. It is divided into eight chapters.
Chapter 1, "General Information," provides information about which oscilloscopes are covered
by this manual, environmental requirements, and oscilloscope dimensions.
Chapter 2, "Setting Up the Oscilloscope," explains how to prepare the oscilloscope for use.
Chapter 4, "Testing Performance," provides information about testing the oscilloscope to verify
that it performs according to specifications.
Chapter 3, "Calibration," explains how and when you should run the user calibration procedure.
Chapter 5, "Troubleshooting," provides information about how to identify defective assemblies.
Chapter 6, "Replacing Assemblies," gives the procedures and techniques for replacing defective
parts.
Chapter 7, "Replaceable Parts," includes a list of exchange assemblies and other replaceable
parts, part ordering information, and shipping information.
Chapter 8, "Theory of Operation," briefly describes the internal operation of the oscilloscope.
At the back of the book you will find safety notices.

6

Contents
7
1 General Information
Instruments covered by this service guide 11
To determine whether the oscilloscope is under warranty 12
Accessories supplied 13
Options and Accessories Available 13
Specifications & characteristics 13
Environmental Conditions 14
Measurement Category 14
Oscilloscope Dimensions 15
2 Setting Up the Oscilloscope
To inspect package contents 18
To connect power 20
To connect the mouse, keyboard, LAN, printer, and GPIB cable 23
To connect SMA Cables 24
To connect optional InfiniiMax oscilloscope probes 25
To tilt the oscilloscope upward for easier viewing 27
To turn on the oscilloscope 28
Screen Saver 29
To turn off the oscilloscope 29
To verify basic oscilloscope operation 30
Installing application programs on Infiniium 31
Changing Windows System Settings 31
To clean the oscilloscope 32
3 Calibration
To run the self calibration 35
4TestingPerformance
Performing Self-Test and Calibration 39
Offset Accuracy Test 41
DC Gain Accuracy Test 48
Analog Bandwidth - Maximum Frequency Check 54
Performance Test Record 61
5Troubleshooting
To install the fan safety shield 67
To troubleshoot the oscilloscope 68
Primary Trouble Isolation 68
Power Supply Trouble Isolation 76
Power Board Trouble Isolation 79
Display Trouble Isolation 83
To check the backlight inverter voltages 84
To check the display board video signals 85

Contents
8
Front Panel Display Trouble Isolation 86
Front Panel Trouble Isolation 88
Motherboard Verification 89
To setup the BIOS 94
Acquisition Trouble Isolation 95
AutoProbe Board Trouble Isolation 96
To check the keyboard; Trouble Isolation Procedure 97
To check the LEDs 98
Software Revisions 99
To check probe power outputs 100
6 Replacing Assemblies
To return the oscilloscope to Agilent Technologies for service 103
To remove and replace the covers 104
To disconnect and connect Mylar flex cables 106
To remove and replace the AutoProbe assembly 107
To remove and replace the probe power and control board 109
To remove and replace the backlight inverter board 111
To remove and replace the front panel assembly 112
To remove and replace the keyboard, touch screen, and flat-panel display assemblies 115
To remove and replace the acquisition board assembly 118
To set the calibration factors after replacing the acquisition board 121
To remove and replace the power regulator distribution board 123
To remove and replace the PCI bridge board 124
To remove and replace the display board 125
To remove and replace the hard disk drive 126
To remove and replace the CD-ROM drive 128
To remove and replace the motherboard 130
To remove and replace the power supply 131
To remove and replace the fans 133
7 Replaceable Parts
Ordering Replaceable Parts 136
Power Cables and Plug Configurations 137
Exploded Views 139
Replaceable Parts List 143
8 Theory of Operation
Block-Level Theory 149
Acquisition Theory 153
Index 157

1
Instruments covered by this service guide 11
To determine whether the oscilloscope is under warranty 12
Accessories supplied 13
Options and Accessories Available 13
Specifications & characteristics 13
Environmental Conditions 14
Measurement Category 14
Oscilloscope Dimensions 15
General Information

10
General Information
This chapter of the Agilent Technologies Infiniium Oscilloscope Service Guide gives
you general information about the oscilloscope. The following topics are covered in this
chapter.
• Instruments covered by this guide
• How to determine whether the instrument is under warranty
• Accessories
• Where to find the oscilloscope’s specifications
• Environmental conditions and measurement category
• Oscilloscope dimensions

Chapter 1: General Information
Instruments covered by this service guide
11
Instruments covered by this service guide
Oscilloscopes manufactured after the date this manual was released may be different from those
described in this manual. The release date of this manual is shown on the title page. This manual
will be revised when necessary.
If you have an oscilloscope that was manufactured after the release of this manual, please check
the Agilent Technologies website at www.agilent.com to see whether a newer version of this
manual is available. You can perform a search for your oscilloscope’s model number, go to its
product page, and select Library.
You can determine the year the oscilloscope was manufactured by examining the serial number
label that is affixed to the rear panel of the oscilloscope. The serial number is composed of two
parts. The first part contains two letters and two numbers that signify the oscilloscope’s county
of origin and year date code. A year date code of “05” indicates that the oscilloscope was
manufactured in 2005. The second part of the serial number contains a rolling number that is
different for each oscilloscope.
The following 80000-Series oscilloscopes are covered in this guide. These four-channel digitizing
oscilloscopes feature 40 GSa/s sample rate in 2-channel mode, and 20 GSa/s sample rate in 4-
channel mode.
Table 1 -1 Oscilloscopes Covered by this Service Guide
The oscilloscope can be identified by the product number on the front or rear panel.
Model Bandwidth
DSO81304B 13 GHz bandwidth
DSO81204B 12 GHz bandwidth
DSO81004B 10 GHz bandwidth.
DSO80804B 8 GHz bandwidth
DSO80604B 6 GHz bandwidth
DSO80404B 4 GHz bandwidth
DSO80304B 3 GHz bandwidth.
DSO80204B 2 GHz bandwidth

Chapter 1: General Information
To determine whether the oscilloscope is under warranty
12
To determine whether the oscilloscope is under warranty
You can check your instrument’s warranty status at www.agilent.com. All you need is access to
the world wide web and the instrument’s model and serial numbers.
At the time this manual was published, the following steps brought you to the “Check Warranty
Status” web page on www.agilent.com.
1Direct your web browser to www.agilent.com.
2Select the “Products & Services” heading.
3Select “Test & Measurement Equipment.”
4Select “Repair, Calibration & Applications Services.”
5Select “Warranty & Service Agreements.”
6Select “Check Warranty Status.”
7Type in your oscilloscope’s model number and serial number.
8Select “Submit.” The warranty status of your oscilloscope will be displayed.
If these navigation steps no longer work because of changes to the www.agilent.com website,
then search for “warranty status” at www.agilent.com to find the “Check Warranty Status” web
page.

Chapter 1: General Information
Accessories supplied
13
Accessories supplied
The following accessories are supplied.
• Mouse, Agilent part number 1150-7913
• Stylus, Agilent part number 1150-7997
• Keyboard, Agilent part number 1150-7809
• Accessory Pouch, Agilent part number 54810-68701
• Front-panel Cover, Agilent part number 54810-42201
• Calibration Cable Assembly, Agilent part number 54855-61620
• Precision 3.5 mm Adapters (qty 2), Agilent part number 54855-67604
• Probe De-skew and Performance Verification Kit, Agilent E2655B
• Power Cord (see chapter 6, “Replaceable Parts,” for available power cords)
• User's Quick Start Guide
Options and Accessories Available
For a complete list of available options and accessories see Agilent Technologies publication
number 5989-4604ENUS: Infiniium 80000B Series Oscilloscopes Data Sheet.
Specifications & characteristics
For complete specifications and characteristics, direct your web browser to www.agilent.com
and perform a search for the oscilloscope’s model number. Then select “Data Sheets” from the
Library.
Specifications that are pertinent to each test are given in the "Testing Performance" chapter.
Specifications are valid after a 30 minute warm-up period, and within ± 5°C from the temperature
at which the last self-calibration was performed.

Chapter 1: General Information
Environmental Conditions
14
Environmental Conditions
Overvoltage Category
This product is intended to be powered by MAINS that comply to Overvoltage Category II, which
is typical of cord-and-plug connected equipment.
Pollution Degree
The 80000 Series Oscilloscope may be operated in environments of Pollution Degree 2 (or
Pollution Degree 1).
Pollution Degree Definitions
Pollution Degree 1: No pollution or only dry, non-conductive pollution occurs. The pollution has
no influence. Example: A clean room or climate controlled office environment.
Pollution Degree 2. Normally only dry non-conductive pollution occurs. Occasionally a temporary
conductivity caused by condensation may occur. Example: General indoor environment.
Pollution Degree 3: Conductive pollution occurs, or dry, non-conductive pollution occurs which
becomes conductive due to condensation which is expected. Example: Sheltered outdoor
environment.
Measurement Category
Measurement Category
The 80000 Series oscilloscope is intended to be used for measurements in Measurement Category
I.
Measurement Category Definitions
Measurement category I is for measurements performed on circuits not directly connected to
MAINS. Examples are measurements on circuits not derived from MAINS, and specially
protected (internal) MAINS derived circuits. In the latter case, transient stresses are variable;
for that reason, the transient withstand capability of the equipment is made known to the user.
Measurement category II is for measurements performed on circuits directly connected to the
low voltage installation. Examples are measurements on household appliances, portable tools
and similar equipment.
Measurement category III is for measurements performed in the building installation. Examples
are measurements on distribution boards, circuit-breakers, wiring, including cables, bus-bars,
junction boxes, switches, socket-outlets in the fixed installation, and equipment for industrial
use and some other equipment, for example, stationary motors with permanent connection to
the fixed installation.
Measurement category IV is for measurements performed at the source of the low-voltage
installation. Examples are electricity meters and measurements on primary overcurrent
protection devices and ripple control units.
Transient Withstand Capability
The maximum transient withstand capability of this instrument is not specified. Do not apply
more than 5 volts rms at the oscilloscope’s vertical input BNC connectors.

Chapter 1: General Information
Oscilloscope Dimensions
15
Oscilloscope Dimensions
The following pictures shows the dimensions of the frame.

Chapter 1: General Information
Oscilloscope Dimensions
16

2
To inspect package contents 18
To connect power 20
To connect the mouse, keyboard, LAN, printer, and GPIB cable 23
To connect SMA Cables 24
To connect optional InfiniiMax oscilloscope probes 25
To tilt the oscilloscope upward for easier viewing 27
To turn on the oscilloscope 28
Screen Saver 29
To turn off the oscilloscope 29
To verify basic oscilloscope operation 30
Installing application programs on Infiniium 31
Changing Windows System Settings 31
To clean the oscilloscope 32
Setting Up the Oscilloscope

18
Setting Up the Oscilloscope
This chapter shows you how to set up your Infiniium oscilloscope, connect power and
accessories, and verify general operation.
To inspect package contents
❏Inspect the shipping container for damage.
Keep a damaged 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 in the Infiniium Oscilloscope packaging.
• Infiniium Oscilloscope
• Mouse, Agilent part number 1150-7913
• Stylus, Agilent part number 1150-7997
• Keyboard, Agilent part number 1150-7809
• Accessory Pouch, Agilent part number 54810-68701
• Front-panel Cover, Agilent part number 54810-42201
• Calibration Cable Assembly, Agilent part number 54855-61620
• Precision 3.5 mm Adapters (quantity 2), Agilent part number 54855-67604
• Probe De-skew and Performance Verification Kit, Agilent E2655B
• Power Cord (see chapter 6, “Replaceable Parts,” for available power cords)
• User's Quick Start Guide
The Programmer’s Guide and this Service Guide are included on the oscilloscope’s hard drive.
See Figure 2-1. (See table 2-4 for the power cord.) If anything is missing, contact your nearest
Agilent Technologies Sales Office. If the shipment was damaged, contact the carrier, then contact
the nearest Agilent Technologies 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 performance tests, notify your Agilent Technologies Sales Office.
• If the shipping container is damaged, or the cushioning materials show signs of stress, notify
the carrier and your Agilent Technologies Sales Office. Keep the shipping materials for the
carrier’s inspection. The Agilent Technologies Sales Office will arrange for repair or
replacement at Agilent’s option without waiting for claim settlement.
❏Verify that you received the options and accessories you ordered and that they are not
damaged.

Chapter 2: Setting Up the Oscilloscope
To inspect package contents
19
Figure 2-1
Package Contents for the Infiniium Oscilloscope
Infiniium Oscilloscope
with Accessory Pouch
User’s Quick Start Guide
Mouse
Keyboard
Calibration Cable
SMA to
Precision
BNC
adapters
(2)
Probe Deskew and
Performance
Verification Kit
Touchscreen Stylus
Front Panel
Cover