Anritsu Bit Master MP1026A User manual

Maintenance Manual
Bit Master MP1026A
Eye Pattern Analyzer
Anritsu Company
490 Jarvis Drive
Morgan Hill, CA 95037-2809
USA
P/N: 10580-00171
Revision: A
Printed: August 2008
Copyright 2008 Anritsu Company

WARRANTY
The Anritsu product(s) listed on the title page is (are) warranted against defects in materials and workmanship for
one year from the date of shipment.
Anritsu’s obligation covers repairing or replacing products which prove to be defective during the warranty period.
Buyers shall prepay transportation charges for equipment returned to Anritsu for warranty repairs. Obligation is
limited to the original purchaser. Anritsu is not liable for consequential damages.
LIMITATION OF WARRANTY
The foregoing warranty does not apply to Anritsu connectors that have failed due to normal wear. Also, the warranty
does not apply to defects resulting from improper or inadequate maintenance by the Buyer, unauthorized
modification or misuse, or operation outside of the environmental specifications of the product. No other warranty is
expressed or implied, and the remedies provided herein are the Buyer’s sole and exclusive remedies.
DISCLAIMER OF WARRANTY
DISCLAIMER OF WARRANTIES. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, ANRITSU
COMPANY AND ITS SUPPLIERS DISCLAIM ALL WARRANTIES, EITHER EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, WITH REGARD TO THE SOFTWARE PRODUCT. THE USER ASSUMES THE ENTIRE
RISK OF USING THE PROGRAM. ANY LIABILITY OF PROVIDER OR MANUFACTURER WILL BE LIMITED
EXCLUSIVELY TO PRODUCT REPLACEMENT.
NO LIABILITY FOR CONSEQUENTIAL DAMAGES. TO THE MAXIMUM EXTENT PERMITTED BY
APPLICABLE LAW, IN NO EVENT SHALL ANRITSU COMPANY OR ITS SUPPLIERS BE LIABLE FOR ANY
SPECIAL, INCIDENTAL, INDIRECT, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING,
WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS
OF BUSINESS INFORMATION, OR ANY OTHER PECUNIARY LOSS) ARISING OUT OF THE USE OF OR
INABILITY TO USE THE SOFTWARE PRODUCTS, EVEN IF ANRITSU COMPANY HAS BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME STATES AND JURISDICTIONS DO NOT ALLOW
THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, THE
ABOVE LIMITATION MAY NOT APPLY TO YOU.
TRADEMARK ACKNOWLEDGMENTS
Windows, Windows XP, Microsoft Paint, Microsoft Word, Microsoft Access, Microsoft Excel, Microsoft PowerPoint,
and Visual Studio are all registered trademarks of Microsoft Corporation.
Acrobat Reader is a registered trademark of Adobe Corporation.
MATLAB is a a registered trademark of The MathWorks Corporation.
NI is a trademark of the National Instruments Corporation.
Signature is a trademark of Anritsu Company.
NOTICE
Anritsu Company has prepared this manual for use by Anritsu Company personnel and customers as a guide for the
proper installation, operation and maintenance of Anritsu Company equipment and computer programs. The
drawings, specifications, and information contained herein are the property of Anritsu Company, and any
unauthorized use or disclosure of these drawings, specifications, and information is prohibited; they shall not be
reproduced, copied, or used in whole or in part as the basis for manufacture or sale of the equipment or software
programs without the prior written consent of Anritsu Company.
UPDATES
Updates, if any, can be downloaded from the Documents area of the Anritsu web site at:
http://www.us.anritsu.com

MP1026A MM PN: 10580-00171 Revision A Safety-1
Safety Symbols
To prevent the risk of personal injury or loss related to equipment malfunction, Anritsu Company uses the
following symbols to indicate safety-related information. For your own safety, please read the information
carefully before operating the equipment.
Symbols Used in Manuals
Safety Symbols Used on Equipment and in Manuals
The following safety symbols are used inside or on the equipment near operation locations to provide
information about safety items and operation precautions. Ensure that you clearly understand the meanings of
the symbols and take the necessary precautions before operating the equipment. Some or all of the following
five symbols may or may not be used on all Anritsu equipment. In addition, there may be other labels attached
to products that are not shown in the diagrams in this manual.
This indicates a prohibited operation. The prohibited operation is indicated symbolically in or near
the barred circle.
This indicates a compulsory safety precaution. The required operation is indicated symbolically in or
near the circle.
This indicates a warning or caution. The contents are indicated symbolically in or near the triangle.
This indicates a note. The contents are described in the box.
These indicate that the marked part should be recycled.
Danger
This indicates a very dangerous procedure that could result in serious
injury or death, and possible loss related to equipment malfunction, if not
performed properly.
Warning This indicates a hazardous procedure that could result in light-to-severe
injury or loss related to equipment malfunction, if proper precautions are
not taken.
Caution
This indicates a hazardous procedure that could result in loss related to
equipment malfunction if proper precautions are not taken.

Safety-2 PN: 10580-00171 Revision A MP1026A MM
For Safety
Warning Always refer to the operation manual when working near locations at which
the alert mark, shown on the left, is attached. If the operation, etc., is
performed without heeding the advice in the operation manual, there is a
risk of personal injury. In addition, the equipment performance may be
reduced.
Moreover, this alert mark is sometimes used with other marks and
descriptions indicating other dangers.
Warning
When supplying power to this equipment, connect the accessory 3-pin
power cord to a 3-pin grounded power outlet. If a grounded 3-pin outlet is
not available, use a conversion adapter and ground the green wire, or
connect the frame ground on the rear panel of the equipment to ground. If
power is supplied without grounding the equipment, there is a risk of
receiving a severe or fatal electric shock.
Warning This equipment can not be repaired by the operator. Do not attempt to
remove the equipment covers or to disassemble internal components.
Only qualified service technicians with a knowledge of electrical fire and
shock hazards should service this equipment. There are high-voltage parts
in this equipment presenting a risk of severe injury or fatal electric shock to
untrained personnel. In addition, there is a risk of damage to precision
components.
Warning
Use two or more people to lift and move this equipment, or use an
equipment cart. There is a risk of back injury if this equipment is lifted by
one person.
Caution
Electrostatic Discharge (ESD) can damage the highly sensitive circuits in
the instrument. ESD is most likely to occur as test devices are being
connected to, or disconnected from, the instrument’s front and rear panel
ports and connectors. You can protect the instrument and test devices by
wearing a static-discharge wristband. Alternatively, you can ground
yourself to discharge any static charge by touching the outer chassis of the
grounded instrument before touching the instrument’s front and rear panel
ports and connectors. Avoid touching the test port center conductors
unless you are properly grounded and have eliminated the possibility of
static discharge.
Repair of damage that is found to be caused by electrostatic discharge is
not covered under warranty.

MP1026A MM PN: 10580-00171 Revision A i
Table of Contents
Chapter 1—Introduction
1-1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1-3 Recommended Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Chapter 2—Operational Tests
2-1 Application Self-Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2 Clock Trigger Frequency Lock Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Chapter 3—Performance Verification Tests
3-1 Bandwidth Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3-2 Amplitude Accuracy Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3-3 RMS Noise Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3-4 RMS Jitter Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3-5 Clock Recovery (CRU) RMS Jitter Verification (Option 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Chapter 4—Battery Information
4-1 RTC Battery Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-2 Battery Pack Removal and Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Chapter 5—Remove and Replace Procedures
5-1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5-2 Opening the MP1026A Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5-3 Replacing the RTC Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5-4 Removing the Main PCB and Display Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5-5 Removal of LCD and Backlight Driver PCB from Main PCB . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5-6 Removing the Oscilloscope PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
5-7 Replacing Keypad Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Replacing the Main Keypad Membrane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Replacing the Main Keypad PCB Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
5-8 Function Key Membrane and Switchpad Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Chapter 6—Troubleshooting
6-1 Boot-up Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Appendix A—Test Records

ii PN: 10580-00171 Revision A MP1026A MM

MP1026A MM PN: 10580-00171 Revision A 1-1
Chapter 1 — Introduction
1-1 Introduction
This manual provides maintenance instructions for the Bit Master Model MP1026A Eye Pattern Analyzer.
The manual provides operational tests, performance verification procedures, battery pack information, part
replacement procedures, and a list of replaceable parts and assemblies. Appendix A contains a blank test
record to copy for recording measured values.
Familiarity with the basic operation of the front panel keys (for example, accessing menus using the Shift key,
or meaning of soft key is assumed.
Before making any measurement, ensure that all equipment has warmed up for at least 30 minutes.
1-2 Description
The MP1026A is a handheld eye pattern analyzer capable of sampling and displaying eye patterns or pulse
patterns for high speed signals such as OC192, 10 Gbps Ethernet, and Fiber Channel. It provides convenient
measurements for field or lab use and is an excellent diagnostic tool for identifying sources of noise and jitter
that degrade signal quality.

1-3 Recommended Test Equipment Introduction
1-2 PN: 10580-00171 Revision A MP1026A MM
1-3 Recommended Test Equipment
Table 1-1 lists the recommended equipment for use in testing and maintaining the MP1026A Eye Pattern
Analyzer.
(1)The instructions in Chapter 2 and Chapter 3 are written based on the use of an Anritsu Model MP1763x Pulse Pattern
Generator (PPG). An Anritsu Model MP1800A Signal Quality Analyzer with the following suggested configurations may
substitute for the Anritsu MP1763x PPG.
Suggested MP1800A Configuration:
– MP1800A Main Frame with MP1800A-014
– MU181000A 12.5 GHz Synthesizer Module
– MU181020A Pulse Pattern Generator Module with MU181020A-002 and MU181020A-01
Table 1-1. Recommended Test Equipment
Instrument Critical Specification Recommended Manufacturer/Model
Pulse Pattern Generator Internal Clock Frequency: 0.05 GHz to 12.5 GHz
Amplitude: 2.0 Vp-p
Pattern: PRBS
Anritsu Model MP1763x(1) with
Options 01
Synthesized Signal
Generator Frequency: 10 MHz to 40 GHz Anritsu Model MG3694A or MG3694B with options 2A and 5
Power Meter Power Range: –70 dBm to +20 dBm Anritsu Model ML2437A or
Model ML2438A
Power Sensor Frequency: 10 MHz to 40 GHz
Power Range: -70 dBm to +20 dBm Anritsu Model MA2474D
Frequency Reference Frequency: 10 MHz Symmetricom Model RubiSource
T&M
DC Power Supply 0 to 500 mVDC capability Agilent Model E3631A
DC Multimeter 0 to ±500 mVDC capability Agilent 34401A
Fixed Attenuator Frequency: DC to 40 GHz
Attenuation: 20 dB Anritsu 43KC-20
Power Splitter Frequency: DC to 40 GHz Anritsu Model K241C
RF Cables Frequency: DC to 40 GHz Anritsu Model 15KKF50-1.5A
(Quantity 3)
Termination Frequency: DC to 40 GHz Anritsu Model 28K50 or K210
Adapter Frequency: DC to 40 GHz
K(f) to K(f) Anritsu Model K222B
Adapter Frequency: DC to 40 GHz
K(m) to K(m) Anritsu Model K220B
Adapter Banana plug to BNC(f) Any (quantity 2)
Adapter BNC(f) to SMA(m) Any
BNC Tee Impedance: 50 Ohm Any
BNC(m) to BNC(m)
cable Impedance: 50 Ohm Any (quantity 2)

MP1026A MM PN: 10580-00171 Revision A 2-1
Chapter 2 — Operational Tests
The tests in this chapter are confidence checks which help ensure that the MP1026A is functioning properly.
To verify conformance to specifications, perform the tests in Chapter 3, Performance Verification Tests.
2-1 Application Self-Test
1. Press the Shift key and then the Calibrate key. Select the Calibrate Amplitude soft key and then press the
Enter key to perform an amplitude calibration.
2. Press the Shift key and then the System key. Select the Application Self-Test soft key to perform a
self test on the MP1026A. Verify that the test is successful.
2-2 Clock Trigger Frequency Lock Test
1. Set the Pattern Pulse Generator (PPG) clock to 1.0 GHz, PPG clock amplitude to 2 Vpp and PPG data
amplitude to 500 mVpp.
2. Install a 20 dB fixed attenuator to the ≥1 GHz CLK IN connector of the MP1026A.
3. Connect the PPG clock cable to the attenuator on the ≥1 GHz CLK IN connector of the MP1026A.
The attenuator will reduce the PPG clock signal from 2 Vpp to 200 mVpp.
4. Connect the PPG data cable to the CH1 connector of the MP1026A. See Figure 2-1.
Note Using an external power supply during operational tests of the MP1026A is recommended.
Note Do not apply any signals to the input ports of the MP1026A while performing amplitude calibration.
Figure 2-1. Clock Trigger Frequency Lock Test Setup

2-2 Clock Trigger Frequency Lock Test Operational Tests
2-2 PN: 10580-00171 Revision A MP1026A MM
5. Press the Shift key and then the Preset key. Select the Preset soft key to preset the MP1026A.
6. Press the Time soft key and then select Acquire Clock Rate soft key.
7. Verify that the clock rate shown on the upper left corner of the display changes to 1.000 GHz.
8. Change the PPG clock frequency to 12.495 GHz.
9. On the MP1026A, press the Acquire Clock Rate soft key again and verify that the displayed clock rate is
12.495 GHz.
10. Change the PPG clock frequency to 999 MHz. Move the 20 dB attenuator and the clock cable to the
≤1 GHz CLK IN connector of the MP1026A.
11. On the MP1026A, press the Acquire Clock Rate soft key again and verify that the clock rate display
changes to 999 MHz.