Agilent Technologies 16850 Series User manual

Agilent Technologies
Agilent 16850 Series
Portable Logic Analyzers
Service Guide

Notices
© Agilent Technologies, Inc. 2013
No part of this manual may be reproduced
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electronic storage and retrieval or transla-
tion into a foreign language) without prior
agreement and written consent from Agi-
lent Technologies, Inc. as governed by
United States and international copyright
laws.
Manual Part Number
16850-97014
Edition
First edition, October 2013
Available in electronic format only
Agilent Technologies, Inc.
1900 Garden of the Gods Road
Colorado Springs, CO 80907 USA
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Safety Notices
CAUTION
A CAUTION notice denotes a haz-
ard. It calls attention to an operat-
ing procedure, practice, or the like
that, if not correctly performed or
adhered to, could result in damage
to the product or loss of important
data. Do not proceed beyond a
CAUTION notice until the indicated
conditions are fully understood and
met.
WARNING
A WARNING notice denotes a
hazard. It calls attention to an
operating procedure, practice, or
the like that, if not correctly per-
formed or adhered to, could result
in personal injury or death. Do not
proceed beyond a WARNING
notice until the indicated condi-
tions are fully understood and met.
2 16850 Series Portable Logic Analyzers Service Guide

16850 Series Portable Logic Analyzers Service Guide 3
The Agilent 16850 Series Logic Analyzers—At a Glance
The Agilent Technologies 16850 Series logic analyzers are
standalone benchtop logic analyzers that range from 34 to
136 logic acquisition channels depending on the model.
Model Comparison
Features, Logic Acquisition
•2 M to 128 M memory depth per channel (depending on
memory option), software upgradeable.
•350 MHz or 700 MHz maximum state clock rate
(depending on state speed option), software upgradeable.
•Full Channel Timing Mode at 2.5 GHz sampling with 12.5
GHz Timing Zoom.
•Half Channel Timing Mode at 5.0 GHz sampling with 12.5
GHz Timing Zoom
•Eye scan (automatic threshold and sample position setup)
feature.
•12.5 GHz (80 ps sample resolution) timing zoom with 256
K samples memory depth.
Features, Mainframe
•Built- in 15 inch TFT color LCD display, 1,024 x 768
(XGA) resolution.
•Removable hard drive.
•10/100/1000 Base- T LAN port.
•USB 2.0 ports (six total, two on front, four on back).
Table 1 Model comparisons
Agilent model number 16851A 16852A 16853A 16854A
Logic acquisition channels 34 68 102 136

4 16850 Series Portable Logic Analyzers Service Guide
•One PCI Express x4 expansion slot.
•Windows 7 operating system.
•Agilent Logic and Protocol Analyzer application which
takes the complexity out of making logic analyzer
measurements. You can perform all operations directly
from one window.
Supplied Accessories
•USB mouse
•USB keyboard
•Accessory pouch and power cord
Optional Accessories
•Probes
Service Strategy
The service strategy for this instrument is the replacement
of defective assemblies. This service guide contains
information for finding a defective assembly by testing and
returning it to Agilent Technologies for all service work,
including troubleshooting. Contact your nearest Agilent
Technologies Sales Office for more details.
Contacting Agilent Technologies
To locate a sales or service office near you, go to
www.agilent.com/find/contactus.

16850 Series Portable Logic Analyzers Service Guide 5
In this Service Guide
This book is the service guide for the 16850 Series logic
analyzers and is divided into seven chapters.
Chapter 1, “General Information” contains information about
the instrument including accessories, specifications and
characteristics, and a list of the equipment required for
servicing the instrument.
Chapter 2, “Preparing for Troubleshooting or Performance
Testing” tells how to prepare the instrument for use.
Chapter 3, “Testing 16850 Series Performance” gives
instructions on how to test the performance of the
instrument.
Chapter 4, “Calibrating and Adjusting” contains calibration
instructions for the instrument.
Chapter 5, “Troubleshooting” contains self- tests and
flowcharts for troubleshooting the instrument.
Chapter 6, “Repairing or Replacing a 16850 Series Logic
Analyzer” describes how to replace the instrument and
assemblies of the instrument, and how to return these to
Agilent Technologies.
Chapter 7, “Replaceable Parts” lists replaceable parts, shows
exploded views, and gives ordering information.
Document Revision History
Table 2 Revision History
Revision Reason
16850-97014, October, 2013 First edition.

6 16850 Series Portable Logic Analyzers Service Guide

16850 Series Portable Logic Analyzers Service Guide 7
Contents
1 General Information
Accessories 10
Specifications 11
Characteristics 12
Electrical 12
Operating Environment (for indoor use only) 13
Non-Operating Environment 13
Dimensions 14
Weight 14
2 Preparing for Troubleshooting or Performance Testing
To inspect the logic analyzer 16
To apply power 16
To clean the instrument 17
To start the user interface 17
To test the logic analyzer 17
3 Testing 16850 Series Performance
Perform the Self-Tests 22
Equipment Required for the Performance Test 23
Assemble the SMA/Flying Lead Test Connectors 24
Set Up the Test Equipment 29
Connect the Test Equipment 32
Connect the Logic Analyzer Pod to the Pulse Generator 32

8 16850 Series Portable Logic Analyzers Service Guide
Contents
Test the 16850 Series Logic Analyzer 34
Configure the Logic Analysis System 35
Determine maximum clock rate 38
Adjust sampling positions using Eye Scan 40
Test P o d 1 44
Test P o d 2 48
Test Pods 3 (if equipped) 49
Other Pods (as needed) 50
Conclude the State Mode Tests 50
Performance Test Record 51
4 Calibrating and Adjusting
Calibration Strategy 54
5 Troubleshooting
To use the system troubleshooting flowcharts 56
To use the logic acquisition troubleshooting flowcharts 61
To troubleshoot system power problems 63
Power Supplies 63
To run the self-tests 64
Logic Acquisition Self-Test Descriptions 65
To exit the test system 68
To restore the system software 69
Contacting Agilent Service/Support 73
To test the logic acquisition cables 74
6 Repairing or Replacing a 16850 Series Logic Analyzer
To remove the logic analyzer cable 84
To return the 16850 Logic Analyzer or Cable for Repair/Exchange 85
7 Replaceable Parts
Ordering Replaceable Parts 88
System Replaceable Parts List 89
Index

9
Agilent 16850 Series Portable Logic Analyzers
Service Guide
Agilent Technologies
1
General Information
Accessories 10
Specifications 11
Characteristics 12
This chapter contains information on accessories,
specifications, characteristics, and recommended test
equipment.
See the 16850 Series logic analyzer’s online help for a full
listing of all specifications and characteristics.

10 16850 Series Portable Logic Analyzers Service Guide
1General Information
Accessories
One or more of the following accessories, sold separately, are
required to operate the 16850 Series logic analyzers.
Table 3 Logic Analyzer Accessories Available
Accessories Agilent Part Number
34-channel single-ended data, differential clock,
direct connect
U4303A
34-channel single-ended data and clock, direct
connect (Mictor)
U4305A
34-channel single-ended data, differential clock,
direct connect Soft Touch pro series
U4304A
17-channel single-ended probe for 90 pin LA pod E5382A
17-channel differential probe for 90 pin LA pod E5381A
34-channel single-ended probe (Mictor) E5380A
34-channel single-ended probe for 90 pin LA pod
(Samtec)
E5378A
17-channel differential probe for 90 pin LA pod
(Samtec)
E5379A
34-channel single-ended for 90 pin LA pod (Soft
Touch pro series)
E5406A
Soft Touch pro series: 17-channel differential for 90
pin LA pod
E5405A
17-channel single-ended for 90 pin LA pod (Half-Size
Soft Touch)
E5398A
17-channel differential for 90 pin LA pod (Soft Touch
classic series)
E5387A
34-channel single-ended for 90 pin LA pod (Soft
Touch classic series)
E5390A
34-channel 90 pin logic analyzer cable for use with
E5xxxA Adapters
U4201A

General Information 1
16850 Series Portable Logic Analyzers Service Guide 11
Specifications
The specifications are the performance standards against
which the product is tested.
Specifications
Parameter Base option Option 700
Maximum state data
rates
(using both edges of
clock)
700 Mb/s 1.4 Gb/s

12 16850 Series Portable Logic Analyzers Service Guide
1General Information
Characteristics
The following characteristics are not specifications, but are
typical characteristics for the 16850 Series logic analyzers.
Electrical
Power Requirements
100- 240V ± 10%, 50/60Hz, 400 W max
CAT II (Line voltage in appliance and to wall outlet).
Pollution degree 2.
Trigger In
The Trigger In Input Signal Level is ± 5 V max.
Clock In
The Clock In connector is 5.5V Max pk and DC, CAT I (line
isolated).
Probes
Maximum Input Voltage: ± 40 V, CAT I, CAT I = Category I,
secondary power line isolated circuits.
NOTE
The mains supply voltage fluctuations are not to exceed ± 10 % of the
nominal supply voltage.
!
!

General Information 1
16850 Series Portable Logic Analyzers Service Guide 13
Operating Environment (for indoor use only)
Non-Operating Environment
Store or ship the instrument in environments within the
following limits:
Table 4 Operating Environment Characteristics
Temperature All 16850 models - 5°C to 40°C (41°F to 104°F)
Probes/cables: 0° to + 65° C (+32° to +149° F).
Humidity 80% to temperatures up to 31ºC decreasing linearly to 50% rH
at 40ºC;
/// max 80% rh, non-condensing.
Avoid sudden, extreme temperature changes which could
cause condensation on the circuit board.
Altitude 2000 m (6,561 ft)
Vibration Operating: random vibration 0-500 Hz, 10 minutes per axis,
0.3 g (rms).
Table 5 Non-Operating Environment Characteristics
Temperature Temperature -40°C to +75°C (-40°F to 167°F).
Protect the system from temperature extremes which cause
condensation on the instrument.
Humidity Humidity up to 90% at 65° C (149°F)
Altitude Altitude up to 3,000 meters (10,000 feet)
Vibration Non-operating: Random vibration 5 to 500 Hz, 10 minutes per
axis, 2.41 g (rms); and swept sine resonant search, 5 to 500 Hz,
0.5 g (0-peak), 5 minute resonant dwell at 4 resonances per
axis.
Indoor use only.
Pollution Degree 2. Normally only dry non-conductive pollution
occurs. Occasionally a temporary conductivity caused by
condensation may occur.

14 16850 Series Portable Logic Analyzers Service Guide
1General Information
Dimensions
The following table provides dimensions for the 16850 Series
logic analyzer unit in inches.
Table 6 16850 Series Logic Analyzer Dimensions
Weight
Height 12 inches
Wdith 17.5 inches
(19.4 inches with the cables attached)
Depth 18 inches
Table 7 16850 Series Logic Analyzer Weight
Max Net Max Shipping
15.0 kg (33.0 lbs) 21.7 kg (48 lbs)

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Agilent 16850 Series Portable Logic Analyzers
Service Guide
Agilent Technologies
2
Preparing for Troubleshooting or
Performance Testing
To inspect the logic analyzer 16
To apply power 16
To clean the instrument 17
To start the user interface 17
To test the logic analyzer 17

16 16850 Series Portable Logic Analyzers Service Guide
2Preparing for Troubleshooting or Performance Testing
To inspect the logic analyzer
1Inspect the shipping container for damage.
If the shipping container or cushioning material is
damaged, keep them until you have checked the contents
of the shipment and checked the instrument mechanically
and electrically.
2Check the supplied accessories.
Accessories supplied with the logic analyzer are listed on
page 4.
3Inspect the product for physical damage.
Check the logic analyzer and the supplied accessories for
obvious physical or mechanical defects. If you find any
defects, contact your nearest Agilent Technologies Sales
Office. Arrangements for repair or replacement are made,
at Agilent Technologies' option, without waiting for a
claim settlement. Contact information is located on
page 4.
To apply power
1Connect the supplied power cord to the instrument and
to the power source.
This instrument autodetects the line voltage from 100 VAC
to 240 VAC. It is equipped with a three- wire power cable.
When connected to an appropriate AC power outlet, this
cable grounds the instrument cabinet. The type of power
cable plug shipped with the instrument depends on the
model ordered and the country of destination. Refer to
“System Replaceable Parts List" on page 89 for more
information on power cables.
2Turn on the power switch located on the front panel.
For first- time power up considerations and setup steps,
refer to the Installation Guide that came with your
instrument. To get the most up- to- date installation guide:
•Go to www.agilent.com.
WARNING
Hazardous voltages exist in this instrument. To avoid electrical
shock, do not apply power to a damaged instrument.

Preparing for Troubleshooting or Performance Testing 2
16850 Series Portable Logic Analyzers Service Guide 17
•Search for 16850 Series Logic Analyzers.
•Look under Technical Support and then Document
Library.
To clean the instrument
If the instrument requires cleaning:
1Remove power from the instrument.
2Clean the external surfaces of the instrument with a soft
cloth dampened with water.
3Make sure that the instrument is completely dry before
reconnecting it to a power source.
To start the user interface
Start the Agilent Logic and Protocol Analyzer application
from the Start menu or using a shortcut. On the desktop,
the Agilent Logic Analyzer icon looks like:
Refer to the Agilent Logic and Protocol Analyzer
application’s on- line help for information on how to operate
the user interface.
To test the logic analyzer
•If you require a test to verify the logic analyzer’s
performance with specifications, refer to “Testing 16850
Series Performance" on page 19."
•If you require a test to verify correct module operation,
refer to “Perform the Self- Tests" on page 22.
•If the logic analyzer does not operate correctly, refer to
“Troubleshooting" on page 55.

18 16850 Series Portable Logic Analyzers Service Guide
2Preparing for Troubleshooting or Performance Testing

19
Agilent 16850 Series Portable Logic Analyzer
Service Guide
Agilent Technologies
3
Testing 16850 Series Performance
Perform the Self-Tests 22
Equipment Required for the Performance Test 23
Assemble the SMA/Flying Lead Test Connectors 24
Set Up the Test Equipment 29
Connect the Test Equipment 32
Test the 16850 Series Logic Analyzer 34
Performance Test Record 51
This chapter describes how to test the performance of the
16850 series logic analyzers against the specifications listed
on page 11.
To ensure the 16850 series logic analyzers is operating as
specified, software tests (self- tests) and a manual
performance test are done. The logic analyzer is considered
performance- verified if all of the software tests and the
manual performance test have passed.
The specifications for the 16850 series logic analyzer define
a maximum state data rate at which data can be acquired in
state mode. The manual performance test (maximum state
data rate test) verifies that the logic analyzer meets these
specifications.
Test Strategy
Only specified parameters are tested. Specifications are
listed on page 11. The test conditions defined in this
procedure ensure that the specified parameter is as good as
or better than specifications. Not all channels of the logic
analyzer will be tested; a sample of channels is tested. The
calibration laboratory may choose to elaborate on these tests
and test all channels at their discretion.
Eye Scan is used to adjust the sampling position on each
channel tested. Eye scan must be used to achieve maximum
state data rate performance.
The 700 Mb/s (1.4 Gb/s for Option 700) state logic analyzer
will be tested. All pods will be tested, one pod at a time.

20 16850 Series Portable Logic Analyzer Service Guide
3Testing 16850 Series Performance
The logic analyzer acquires data on both edges of the clock,
so the test frequency is set to half of the acquisition speed.
Test Interval
Test the performance of the 16850 module against its
specifications at two- year intervals.
Test Record Description
A Performance Test Record for recording the results of each
procedure is provided in this chapter. You may want to make
copies of this, and fill- in a copy each time you test the
module.
NOTE
You can easily determine whether or not Option 700 is active using the Agilent
Notification Center icon. This icon is displayed as a green dot on the taskbar
(lower, right-hand corner of your desktop) if the Agilent Logic and Protocol Analyzer GUI
is installed. If the GUI is open and running, the Notification Center icon changes to .
1. Right-click the Notification Center icon and select Show Instrument Details from the
displayed menu.
2. In the Instrument Details dialog box, expand the Module: <n>-Channel Logic
Analyzer node.
3. Note the entry that specifies the State Speed (for example): Max Acquisition State
Speed: 700 MHz.
This helps you determine the maximum speed at which you need to perform the State
Acquisition tests.