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Service Manual
Tektronix Logic Analyzer Module
(TLA7AAx & TLA7ABx)
071-1043-00
This document applies to TLA application soft-
ware version 4.2 and above.
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
www.tektronix.com

Copyright ©Tektronix, Inc. All rights reserved.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

WARRANTY
Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and
workmanship for a period of one (1) year from the date of shipment. If a product proves defective during this
warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor,
or will provide a replacement in exchange for the defective product.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration
of the warranty period and make suitable arrangements for the performance of service. Customer shall be
responsible for packaging and shipping the defective product to the service center designated by Tektronix, with
shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a
location within the country in which the Tektronix service center is located. Customer shall be responsible for
paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage
resulting from attempts by personnel other than Tektronix representatives to install, repair or service the product;
b) to repair damage resulting from improper use or connection to incompatible equipment; c) to repair any
damage or malfunction caused by the use of non-Tektronix supplies; or d) to service a product that has been
modified or integrated with other products when the effect of such modification or integration increases the time
or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES, EXPRESS
OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’
RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY.
TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR
THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

TLA7AXX Logic Analyzer Module Service Manual i
Table of Contents
General Safety Summary ix...................................
Service Safety Summary xi....................................
Preface xiii...................................................
Manual Structure xiii................................................
Manual Conventions xiv..............................................
Related Manuals xvi.................................................
Contacting Tektronix xvii.............................................
Introduction xix..............................................
Adjustment and Certification Interval xix................................
Strategy for Servicing xix.............................................
Service Offerings xx................................................
Warranty Repair Service xx.......................................
Calibration and Repair Service xx..................................
Service Options xx..............................................
Service Agreements xx...........................................
Service On Demand xx...........................................
Self Service xx.................................................
For More Information xxi.........................................
Specifications
Logic Analyzer Module Description 1--1.................................
TLACAL2 Performance Verification and Adjustment Test Fixture Description 1--2
Characteristic Tables 1--2.............................................
Operating Information
Installation 2--1.....................................................
Logical Address 2--1.............................................
Merged Modules 2--2.............................................
Module Installation 2--2...........................................
TLACAL2 Fixture Installation 2--3.................................
Software Installation 2--7.............................................
Verify the Performance Verification Software Version 2--7................
Install the Performance Verification Software 2--7......................
Removing the Software 2--8........................................
Operating Information 2--8............................................
Front Panel 2--8..................................................
Merge Cable Connectors 2--10.......................................
Rear Panel 2--11..................................................
Online Help 2--11.................................................
Diagnostics 2--11.................................................
Self Calibration 2--12..............................................
Menu Overview 2--12..............................................
Merged Modules 2--14................................................

Table of Contents
ii TLA7AXX Logic Analyzer Module Service Manual
Merging Rules 2--14...............................................
Merge Procedure 2--15.............................................
Unmerge Procedure 2--19...........................................
Theory of Operation
Block Level Description 3--1...........................................
Local Processor Unit (LPU) Board 3--1..................................
Processor System 3--1.............................................
Communications Interface 3--2.....................................
Power Supplies 3--2..............................................
Acquisition Board 3--2................................................
Clock Circuitry 3--2..............................................
Probe Interface 3--2..............................................
Analog Output Interface 3--2.......................................
Power Supplies 3--2..............................................
Trigger and Storage Control Circuitry 3--3............................
Acquisition Memory 3--3..........................................
Backplane Interface 3--3...........................................
Probes 3--4.........................................................
Merged Modules 3--4.................................................
Performance Verification
Summary Verification 4--1.............................................
Test Equipment 4--3..................................................
Test Equipment Setup 4--4.............................................
Starting the Performance Verification Software 4--4.....................
Software Overview 4--5...........................................
Obtaining Test Results 4--6.........................................
Troubleshooting 4--6..............................................
Functional Verification 4--7............................................
Test Equipment 4--7..............................................
Setup 4--7......................................................
Module Self Tests and Power-On Diagnostics 4--8......................
Logic Analyzer Module Functional Verification Procedure 4--8............
Probe Functional Verification 4--9...................................
Performance Verification Instructions 4--10................................
Prerequisites 4--10................................................
Procedure Overview 4--11..........................................
Performance Verification Procedures 4--12................................
Probe+PIC Procedure 4--15.........................................
Module+MIC Procedures 4--18......................................
Module+Probe Gain and Offset Procedures 4--20........................
Module+Probe Timing Procedures 4--23...............................
Setup and Hold Procedure 4--27......................................
Logic Analyzer Module Certification 4--30................................
Equipment Setups 4--30............................................
Start the Software 4--32............................................

Table of Contents
TLA7AXX Logic Analyzer Module Service Manual iii
Adjustment Procedures
Test Equipment and Initial Setup 5--1....................................
Prerequisites 5--1....................................................
Merged Modules 5--2.................................................
Using the Software 5--2...............................................
Performing the Adjustments 5--2....................................
Adjustment After Repair 5--3.......................................
Tests Performed 5--3.................................................
Self Calibration 5--5.............................................
Probe+PIC Procedures 5--6............................................
Equipment Setups 5--6............................................
Start the Software 5--7............................................
Module+MIC Procedures 5--9..........................................
Equipment Setups 5--9............................................
Start the Software 5--10............................................
Module+Probe Timing Procedures 5--12...................................
Equipment Setups 5--12............................................
Start the Software 5--13............................................
Merged Deskew Procedures 5--16........................................
Equipment Setups 5--16............................................
Start the Software 5--17............................................
Completing the Adjustment Steps 5--18...................................
Maintenance
Related Maintenance Procedures 6--1....................................
Preventing Electrostatic Discharge 6--1..................................
Inspection and Cleaning 6--2...........................................
General Care 6--2................................................
Inspection and Cleaning Procedures 6--2..............................
Exterior Inspection 6--3...........................................
Exterior Cleaning Procedure 6--3....................................
Interior Inspection 6--4............................................
Interior Cleaning Procedure 6--4....................................
Cleaning the Probes 6--5...........................................
Cleaning the P6860 and P6880 Compression Footprints 6--6..................
Cleaning the P6860 and P6880 Probe Heads 6--6...........................
Storing the P6860 and P6880 Probe Heads 6--7............................
Removal and Installation Procedures 6--9.........................
Tools Required 6--9..................................................
Torque Requirements 6--9.............................................
Injector/Ejector Handles 6--10...........................................
Removal 6--10....................................................
Installation 6--11..................................................
Covers 6--11.........................................................
Removal 6--11....................................................
Installation 6--13..................................................
Local Processor Unit Board 6--16.......................................
Removal 6--16....................................................
Installation 6--17.................................................

Table of Contents
iv TLA7AXX Logic Analyzer Module Service Manual
Acquisition Board 6--19................................................
Removal 6--19....................................................
Installation 6--22..................................................
Fuses 6--23..........................................................
Front and Rear EMI Gaskets 6--23.......................................
Removal 6--23....................................................
Installation 6--24..................................................
Side EMI Gaskets 6--24................................................
Troubleshooting 6--25..........................................
Service Level 6--25...................................................
Required Documentation 6--26..........................................
Check for Common Problems 6--26......................................
Eliminate Other Problem Sources 6--28...................................
Substitute a Good Module 6--28......................................
Probe-Level Troubleshooting 6--28...................................
Troubleshoot the Logic Analyzer Module 6--29.............................
Equipment Required 6--29..........................................
Preparation 6--29..................................................
Calibration and Diagnostic Procedures 6--29............................
Fault Isolation Procedure 6--31......................................
Primary Troubleshooting Chart 6--32..................................
Diagnostics Table 6--33............................................
Adjustment After Repair 6--35..........................................
Updating or Restoring the Logic Analyzer Firmware 6--35...................
Overview of Procedures 6--37...........................................
Repackaging Instructions 6--39..................................
Packaging 6--39......................................................
Shipping to the Service Center 6--39......................................
Storage 6--40........................................................
Options
TLA7AA1, TLA7AA2, TLA7AA3 and TLA7AA4 Options 7--1..............
TLA7AB2 and TLA7AB4 Options 7--2..................................
Service Options 7--2..................................................
Electrical Parts List
Diagrams
Mechanical Parts List
Parts Ordering Information 10--1.........................................
Module Servicing 10--1............................................
Using the Replaceable Parts List 10--2....................................
Abbreviations 10--2...............................................
Mfr. Code to Manufacturer Cross Index 10--2...........................

Table of Contents
TLA7AXX Logic Analyzer Module Service Manual v
List of Figures
Figure 1--1: Location of modules in merged configurations 1--11.......
Figure 2--1: Logical address switches 2--2..........................
Figure 2--2: Installing modules in the mainframe 2--3...............
Figure 2--3: MIC and PIC board identification 2--5.................
Figure 2--4: TLACAL2 performance verification and adjustment
test fixture 2--6............................................
Figure 2--5: Front panel of the logic analyzer module 2--9............
Figure 2--6: Merge connector (shown in the extended position) 2--10....
Figure 2--7: Rear panel controls and connectors 2--11................
Figure 2--8: Location of modules in a merged system 2--15............
Figure 2--9: Removing the merge connector assembly from the
module 2--16...............................................
Figure 2--10: Connecting the logic analyzer modules together 2--17.....
Figure 2--11: Installing the merged module set in the mainframe 2--18..
Figure 4--1: Calibration/certification procedure flow chart 4--2.......
Figure 4--2: Performance verification software startup window 4--5....
Figure 4--3: TLACAL2 test fixture connections 4--14.................
Figure 4--4: Default Verification dialog box 4--17....................
Figure 4--5: Module+Probe timing procedure probe connections 4--25...
Figure 4--6: P6860 Setup & Hold procedure connections 4--28.........
Figure 4--7: Default Certification procedure dialog box 4--33..........
Figure 5--1: TLACAL2 test fixture connections 5--4.................
Figure 5--2: Performance verification software startup window 5--7....
Figure 5--3: Default Adjustment procedure dialog box 5--8...........
Figure 5--4: Deskew procedure probe connections 5--14...............
Figure 6--1: Cleaning the probe heads 6--7.........................
Figure 6--2: Storing the probe head 6--8...........................
Figure 6--3: Injector/ejector handle replacement 6--10................
Figure 6--4: Removing the merge cable bracket from the cover 6--12....
Figure 6--5: Cover removal 6--13..................................
Figure 6--6: Installing the cover onto the chassis 6--14................