This document applies to TLA application software 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.
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 thi s
warranty period, Tektronix, at its option, e ither 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 Custome r 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 de fect, failure or damage caused by improper use or i mproper 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 tha n 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 W ARRANTY 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.
Table of Contents
Specifications
General Safety Summaryix...................................
Service Safety Summaryxi....................................
Table 7--1: TLA7AA1, TLA7AA2, TLA7AA3 and TLA7AA4 options7--1
Table 7--2: TLA7AB2 and TLA7AB4 options7--2..................
viii
TLA7AXX Logic Analyzer Module Service Manual
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it. To avoid potential hazards, use this
product only as specified.
Only qualified personnel should perform service procedures.
While using this product, you may need to access other parts of the system. Read
the General Safety Summary in other system manuals for warnings and cautions
related to operating the system.
ToAvoidFireor
Personal Injury
Use Proper Power Cord. Use only the power cord specified for this product and
certified for the country of use.
Use Proper Voltage Setting. Before applying power, ensure that the line selector is
in the proper position for the power source being used.
Ground the Product. The TLACAL2 test fixture is grounded through the
grounding conductor of the power cord. To avoid electric shock, the grounding
conductor must be connected to earth ground. Before making connections to the
input or output terminals of the fixture, ensure that the fixture is properly
grounded.
Ground the Product. The logic analyzer modules are indirectly grounded through
the grounding conductor of the mainframe power cord. To avoid electric shock,
the grounding conductor must be connected to earth ground. Before making
connections to the input or output terminals of the modules, ensure that the
modules are properly grounded indirectly.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings
and markings on the product. Consult the product manual for further ratings
information before making connections to the product.
Do not apply a potential to any terminal, including the common terminal, that
exceeds the maximum rating of that terminal.
Replace Batteries Properly. Replace batteries only with the proper type and rating
specified.
Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.
Use Proper Fuse. Use only the fuse type and rating specified for this product.
Avoid Exposed Circuitry. Do not touch exposed connections and components
when power is present.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
TLA7AXX Logic Analyzer Module Service Manual
ix
General Safety Summary
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
Provide Proper Ventilation. Refer to the manual’s installation instructions for
details on installing the product so it has proper ventilation.
Symbols and Terms
Terms in this Manual. These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
Terms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an injury hazard not immediately accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. The following symbol may appear on the product:
CAUTION
Refer to Manual
x
TLA7AXX Logic Analyzer Module Service Manual
Service Safety Summary
Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service
procedures.
Do Not Service Alone. Do not perform internal service or adjustments of this
product unless another person capable of rendering first aid and resuscitation is
present.
Disconnect Power. To avoid electric shock, switch off the instrument power, then
disconnect the power cord from the mains power.
Use Care When Servicing With Power On. Dangerous voltages or currents may
exist in this product. Disconnect power, remove battery (if applicable), and
disconnect test leads before removing protective panels, soldering, or replacing
components.
To avoid electric shock, do not touch exposed connections.
TLA7AXX Logic Analyzer Module Service Manual
xi
Service Safety Summary
xii
TLA7AXX Logic Analyzer Module Service Manual
Preface
Manual Structure
This is the service manual for the TLA7Axx Series Logic Analyzer Module.
Read this preface to learn how this manual is structured, what conventions it
uses, and where you can find other information related to servicing this product.
Read the Introduction, which follows this preface, for important background
information needed before using this manual for servicing this product.
A brief description of each chapter of this service manual follows:
HSpecifications contains a product description of the logic analyzer module
and tables of the characteristics and descriptions that apply to it.
HOperating Information includes basic installation and operating instructions
at the level needed to safely operate and service the logic analyzer module.
For complete installation and configuration procedures, refer to the TektronixLogic Analyzer Family User Manual.
HTheory of Operation contains circuit descriptions that support general service
to the circuit board level.
HPerformance Verification contains the performance verification procedures
for the logic analyzer module and logic analyzer module probes.
HAdjustment Procedures contains the adjustment procedures for the logic
analyzer module.
HMaintenance contains information and procedures for doing preventive and
corrective maintenance on the logic analyzer module. Included are instructions for cleaning, for removal and installation of replacement parts, and for
troubleshooting to the circuit board level.
HOptions contains information on servicing any of the factory-installed
options that may be available for the logic analyzer module.
HDiagrams contains block diagrams and interconnection diagrams that are
useful when isolating failed circuit boards.
HMechanical Parts List includes a table of all replaceable parts, their
descriptions, and their Tektronix part numbers.
TLA7AXX Logic Analyzer Module Service Manual
xiii
Preface
Manual Conventions
This manual uses certain conventions that you should be familiar with before
attempting service.
Acquisition Board
Adjustment Procedures
Adjustment/Verification
Fixture
Certification Procedures
Functional Verification
Procedures
The acquisition board is one of the circuit boards inside the logic analyzer
module. The circuit board receives and stores acquisition data from the probes
and works with the local processor unit (LPU) board to provide logic analysis
information to the operator of the logic analyzer.
Adjustment procedures check for, and if necessary, correct any adjustment errors
discovered when performing functional or performance verification procedures.
The adjustment verification fixture is a test fixture used to perform the adjustment, functional check, and performance verification procedures. This fixture is
also known as the TLACAL2 fixture in this document. Specifications and
replaceable parts information are documented in this service manual.
Certification procedures certify a product and provide a traceability path to
national standards.
Functional verification procedures verify the basic functionality of the instrument. These procedures include power-on and extended diagnostics, self
calibration, as well as semi-automated or manual check procedures. These
procedures can be used as incoming inspection purposes. This manual provides
information on power-on and extended diagnostics and the self calibration.
LPU Board
Maintenance Procedures
Modules
xiv
The LPU board is one of the circuit boards inside the logic analyzer module that
provides the main communications interface with the acquisition board and the
mainframe.
Maintenance procedures are used for fault isolation and repair to the circuit board
level or to the replaceable part level.
Throughout this manual, the term “module” refers to a logic analyzer or digital
oscilloscope, or pattern generator unit that mounts inside a mainframe. A module
is composed of circuit boards, interconnecting cables, and a user-accessible front
panel.
TLA7AXX Logic Analyzer Module Service Manual
Preface
P6810 General Purpose
Logic Analyzer Probe
P6880 Differential Probe
P6860 High Density Probe
Performance Verification
Procedures
This is a 34-channel general purpose probe used with the TLA7Axx series logic
analyzers. It provides support for single-ended, differential clocks, and data with
no trade-off in channels. It connects to a wide variety of probing accessories
including SMT KlipChips for quick connections to a variety of IC pins and
connectors.
This is a 34-channel differential probe used with the TLA7Axx series logic
analyzers. This probe is designed for use with differential clocks and single-ended data. It uses a connector-less interface that use a compression contact which
is mechanically reliable and minimizes impact on board layout and design.
Adaptors are available to connect to Mictor probing interfaces.
This is a 34-channel high-density probe used with the TLA7Axx series logic
analyzers. This probe is designed for use with differential clocks and data with
no trade-offs in channels. It uses a connector-less interface that use a compression contact which is mechanically reliable and minimizes impact on board
layout and design. Adaptors are available to connect to Mictor probing interfaces.
Performance verification procedures confirm that a product meets or exceeds the
performance requirements for each of the published specifications.
Replaceable Parts
Safety
TLACAL2 Performance
Verification and
Adjustment Fixture
This manual refers to any field-replaceable assembly or mechanical part
specifically by its name or generically as a replaceable part. In general, a
replaceable part is any circuit board or assembly that is listed in the replaceable
parts list near the end of this manual.
Symbols and terms related to safety appear in the Safety Summary found at the
beginning of this manual.
This is a test fixture used with the performance verification procedures,
adjustment procedures, and certification procedures described in this document.
It is used with software to adjust, verify, and certify the P68xx probes and the
TLA7Axx series logic analyzers.
TLA7AXX Logic Analyzer Module Service Manual
xv
Preface
Related Manuals
The following manuals are available as part of the TLA700 Series Logic
Analyzer documentation set.
Manual nameDescriptionService use
Tektronix Logic Analyzer Family User
Manual
TLA715 Portable Mainframe Service
Manual
TLA721 Benchtop Mainframe and TLA7XM
Expansion Mainframe Service Manual
TLA7Dx/TLA7Ex Digitizing Oscilloscope
Service Manual
TLA7Nx, TLA7Px, & TLA7Qx Logic
Analyzer Module Service Manual
TLA7Lx, & TLA7Mx Logic Analyzer Module
Service Manual
TLA7PG2 Pattern Generator Service
Manual
Provides operating information on the TLA
Series Logic Analyzer
Provides service information for the
portable mainframes
Provides service information for the
benchtop mainframe and expansion
mainframe
Provides service information for the
digitizing oscilloscope modules
Provides service information for the
TLA7Nx, TLA7Px, and TLA7Qx logic
analyzer modules
Provides service information for the
TLA7Lx, and TLA7Mx logic analyzer
modules
Provides service information for the
TLA7PG2 pattern generator modules
Augments operating information found in
chapter 2 of this manual
Isolating and correcting failures in the
portable mainframe
Isolating and correcting failures in the
benchtop mainframe, controller, or expansion mainframe
Isolating and correcting failures in the DSO
module. Provides adjustment procedures,
performance verification procedures, and
certification procedures for the DSO
modules
Isolating and correcting failures in the logic
analyzer module. Provides adjustment
procedures, performance verification
procedures, and certification procedures for
the logic analyzer modules and logic
analyzer probes
Isolating and correcting failures in the logic
analyzer module. Provides adjustment
procedures, performance verification
procedures, and certification procedures for
the logic analyzer modules and logic
analyzer probes
Isolating and correcting failures in the
pattern generator module. Provides
adjustment procedures and performance
verification procedures for the pattern
generator modules and probes
xvi
TLA7AXX Logic Analyzer Module Service Manual
Contacting Tektronix
Preface
Phone1-800-833-9200*
AddressTektronix, Inc.
Department or name (if known)
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
Web sitewww.tektronix.com
Sales support1-800-833-9200, select option 1*
Service sup-
port
Technical sup-
port
*This phone number is toll free in North America. After office hours, please leave a
voice mail message.
Outside North America, contact a Tektronix sales office or distributor; see the
Tektronix web site for a list of offices.
1-800-833-9200, select option 2*
Email: techsupport@tektronix.com
1-800-833-9200, select option 3*
6:00 a.m. -- 5:00 p.m. Pacific time
TLA7AXX Logic Analyzer Module Service Manual
xvii
Preface
xviii
TLA7AXX Logic Analyzer Module Service Manual
Introduction
This manual contains information needed to properly service the logic analyzer
module, as well as general information critical to safe servicing.
To prevent personal injury or damage consider the following requirements before
attempting service:
HThe procedures in this manual should be performed only by qualified service
personnel.
HRead the General Safety Summary and Service Safety Summary found at the
beginning of this manual.
When using this manual for servicing follow all warnings and cautions.
Adjustment and Certification Interval
Generally, you should perform the adjustments and certification (calibration)
described in the Performance Verification and Adjustment Procedures chapters in
this manual once per year, or following repairs that affect adjustment or
calibration.
Strategy for Servicing
This manual contains information for corrective maintenance of this product:
HSupports isolation of faults to the failed circuit board or assembly level
shown in the replaceable parts list
HSupports removal and replacement of those boards or assemblies
HSupports removal and replacement of fuses, knobs, chassis, and other
mechanical parts listed in the replaceable parts list
This manual does not support component-level fault isolation and replacement.
TLA7AXX Logic Analyzer Module Service Manual
xix
Introduction
Service Offerings
Tektronix provides service to cover repair under warranty as well as other
services that are designed to meet your specific service needs.
Whether providing warranty repair service or any of the other services listed
below, Tektronix service technicians are well equipped to service the logic
analyzer module.
Warranty Repair Service
Calibration and Repair
Service
Service Options
Service Agreements
Tektronix warrants this product for one year from date of purchase. (The
warranty appears behind the title page in this manual.) Tektronix technicians
provide warranty service at most Tektronix service locations worldwide. The
Tektronix product catalog lists all service locations worldwide or you can visit us
on our web site at http://www.tektronix.com/Measurement/Service. See our latest
service offerings and contact us by email.
In addition to warranty repair, Tektronix Service offers calibration and other
services that provide cost-effective solutions to your service needs and qualitystandards compliance requirements. Our instruments are supported worldwide by
the leading-edge design, manufacturing, and service resources of Tektronix to
provide the best possible service.
The following services can be tailored to fit your requirements for calibration
and/or repair of the logic analyzer module.
Tektronix Service Options can be selected at the time you purchase your
instrument. You select these options to provide the services that best meet your
service needs.
If service options are not added to the instrument purchase, then service
agreements are available on an annual basis to provide calibration services or
post-warranty repair coverage for the logic analyzer module. Service agreements
may be customized to meet special turn-around time and/or on-site requirements.
xx
Service On Demand
Self Service
Tektronix also offers calibration and repair services on a “per-incident” basis that
is available with standard prices for many products.
Tektronix supports repair to the replaceable-part level by providing for circuit
board exchange. Use this service to reduce down-time for repair by exchanging
circuit boards for remanufactured ones. Tektronix ships updated and tested
exchange boards. Each board comes with a 90-day service warranty.
TLA7AXX Logic Analyzer Module Service Manual
Introduction
When you exchange circuit boards, you must supply the following information
to allow the board to be preconfigured to the proper PowerFlex level. You can
also return the repaired module to your local service center for configuration.
HModel number and serial number
HPowerFlex option upgrade number
HFirmware level
For More Information
Contact your local Tektronix service center or sales engineer for more information on any of the Calibration and Repair Services just described.
TLA7AXX Logic Analyzer Module Service Manual
xxi
Introduction
xxii
TLA7AXX Logic Analyzer Module Service Manual
Specifications
This chapter provides a general description of the TLA7Axx series logic analyzer
modules and the TLACAL2 Performance Verification and Adjustment test
fixture. This chapter also includes a list of specifications for the logic analyzer
module and for the test fixture under Characteristic Tables beginning on
page 1--2.
Logic Analyzer Module Description
The TLA7Axx series logic analyzer modules are designed as part of the
Tektronix Logic Analyzer Family for use in the TLA700 series logic analyzer
mainframes. The logic analyzer module is used as a test and measurement tool
for high-speed digital timing and state acquisition across several channels with
deep acquisition memory.
Some of the key features of the logic analyzer modules include the following:
HUp to 128 data channels and 8 stored clock or qualifier channels per module
HAbility to merge five modules to provide up to 680 data channels with full
clocking and triggering capabilities across all modules
HSoftware configurable channels, memory depth, and user synchronous speed
(PowerFlex)
HData correlation with other Tektronix logic analyzer modules in a TLA
mainframe
HEnhanced clocking to minimize skew between the data bus and the system
clock
HFour analog output connectors that send the analog signal of any channel to
an oscilloscope or other modules without requiring additional probe
connections
The logic analyzer acquires data from the target systems through the P68xx
series logic analyzer probes. The following probes are supported:
HP6810 General Purpose Logic Analyzer Probes with flying lead sets. These
probes are designed for most general purpose logic analyzer applications.
HP686x High-Density Logic Analyzer Probes. These probes feature a
connectorless system that connect directly to the target system; no adaptors
or connectors are required.
TLA7AXX Logic Analyzer Module Service Manual
1- 1
Specifications
HP6880 High Density Differential Logic Analyzer Probes. These probes also
feature a connectorless system for differential signals.
Refer to the P68xx Logic Analyzer Probe Instruction Manual for complete
information on the P68xx series logic analyzer probes. This document also
contains circuit board design information required for designing the probe
interfaces for the target system.
TLACAL2 Performance Verification and Adjustment Test Fixture Description
The TLACAL2 Performance Verification and Adjustment test fixture is designed
to be used with the TLA7Axx series logic analyzer modules and probes for
performance verification procedures, certification procedures, and adjustment
procedures. These procedures are documented in the Performance Verification
and Adjustment Procedures chapters of this manual.
Characteristic Tables
All specifications listed in this section are guaranteed unless noted Typical.
Specification that are marked with the n symbol are checked either directly or
indirectly in the Performance Verification chapter of this manual. The specifica-
tions apply to all variations of the TLA7Axx series logic analyzer module unless
otherwise noted.
This section also includes specifications for the performance verification test
fixture.
The performance limits under these specifications are valid under the following
conditions:
HThe logic analyzer modules must have been calibrated (adjusted) at an
ambient temperature between +20 °C and +30 °C.
HThe logic analyzer modules must be in an environment with temperature,
altitude, humidity, and vibration within the operating limits described in
these specifications.
HThe logic analyzer must have had a warm-up period of at least 30 minutes.
1- 2
TLA7AXX Logic Analyzer Module Service Manual
Table 1- 1: Input parameters (with probes)
CharacteristicDescription
Specifications
n Threshold accuracy
±(35 mV + 1% of the threshold voltage setting)
(Certifiable parameter)
Threshold range and step sizeSetable from +4.5 V to --2.0 V in 5 mV steps
Threshold channel selection16 threshold groups assigned to channels. Each probe has four threshold settings,
one for each of the clock/qualifier channels and one per group of 16 data channels.
n Channel to channel skew≤400 ps
Channel to channel skew (Typical)≤300 ps
Sample uncertainty
AsynchronousSample period
Synchronous125 ps
Minimum slew rate (Typical)0.2 V/ns
Input voltage range-- 2 . 5 V t o + 5 V
Maximum operating voltage swing6.0 V peak-to-peak
Probe overdrive
Single ended probes±150 mV or ±25% of signal swing minimum required beyond threshold, whichever
Number of outputsFour analog outputs regardless of the module channel width. Any four of the module’s
channels can be mapped to the four Analog outputs.
Attenuation10X mode for normal operation
5X mode for small signals (--1.5 V to +2.5 V)
Bandwidth (Typical)2GHz
Accuracy (gain and offset)
±(50 mV + 2% of signal amplitude)
(Typical)
TLA7AXX Logic Analyzer Module Service Manual
1- 3
Specifications
M
a
c
lockcha
2
ProductC
lockcha
M
lavec
lockcha
2
ProductC
lockcha
g
(
c
a
Table 1- 3: Channel width and depth
CharacteristicDescription
Number of channels
TLA7AA4, TLA7AB4128 data, 8 clock/qualifier
TLA7AA396 data, 6 clock/qualifier
TLA7AA2, TLA7AB264 data, 4 clock/qualifier
TLA7AA132 data, 2 clock/qualifier
Acquisition memory depth
TLA7AAx series32 M per channel
TLA7ABx series64 M per channel
Table 1- 4: Clocking
CharacteristicDescription
Asynchronous clocking
n Internal sampling period500 ps to 50 ms in a 1--2--5 sequence. Storage control can be used to only store data
when it has changed (transitional storage)
2 ns minimum for all channels
1 ns minimum for half channels (using 2:1 Demul tiplex mode)
0.5 ns minimum for quarter channels (using 4:1 Demultiplex mode)
n Minimum recognizable word
(across all channels)
1
Channel-to-channel skew + sample uncertainty
Example for a P6860 high-density probe anda2nssampleperiod:
400 ps + 2 ns = 2.4 ns
Synchronous clocking
ster
nnels
nnels
32+2 module2
64+4 module4
96+6 module4
128+8 module4
ergeds
(64+4 channel modules and 32+2 channel
modules
nnot be merged.)
nnels
nnels
96+6 module4
128+8 module4
1- 4
TLA7AXX Logic Analyzer Module Service Manual
Table 1- 4: Clocking (Cont.)
Qualifiercha
3
ProductQualifiercha
CharacteristicDescription
Specifications
nnels
nnels
32+2 module0
64+4 module0
96+6 module2
128+8 module4
n Setup and hold window size
P686x high density probe = 750 ps
(data and qualifiers)
Setup and hold window size
P686x high density probe = 625 ps
(data and qualifiers) (Typical)
Setup and hold window rangeThe setup and hold window can be moved for each channel group from +8.0 ns (T
typical) to --8.0 ns (Tstypical) in 0.125 ns steps (setup time).
The setup and hold window can be shifted toward the setup region by 0 ns, 4 ns, or
8ns.Witha0nsshift,therange is +8 ns to --8 ns; witha4nsshift,therange is
+12 ns to --4 ns; with an 8 ns shift, the range is +16 ns to 0 ns. The sample point
selection region is the same setup and hold window. Setup times are specified as
typical figures. Hold time follows the setup time by the setup and hold window size.
Sample point selection window rangeThe setup and hold window can be moved for each channel group from +8.0 ns to
--8.0 ns in 0.125 ns steps.
This window can be shifted toward the positive region by 0 ns, 4 ns, or 8 ns. With a
0 ns shift, the range is +8 ns to --8 ns; witha4nsshift,therange is +12 ns to --4 ns;
with an 8 ns shift, the range is +16 ns to 0 ns. The sample point selection region is the
same setup and hold window.
n Maximum synchronous clock rate450 MHz in full-speed mode (2.2 ns minimum between active clock edges)
s
235 MHz in half-speed mode (4.25 ns minimum between active clock edges)
120 MHz in quarter-speed mode (8.3 ns minimum between active clock edges)
800 MHz on half channels
Software controls the selection between full-speed and half-speed modes.
TLA7AXX Logic Analyzer Module Service Manual
4
1- 5
Specifications
TLA7AA3,TLA7AA4,TLA7AB4modul
Table 1- 4: Clocking (Cont.)
CharacteristicDescription
Demultiplex clocking (two clock edges required)
Demultiplex channels (2:1)
TLA7AA3, TLA7AA4, TLA7AB4 modules
TLA7AA1, TLA7AA2, TLA7AB2 modulesAny individual channel can be demultiplexed with its partner channel. If multiplexi ng is
Demultiplex channels (4:1)
es
TLA7AA1, TLA7AA2, TLA7AB2 modulesUnlike the 2:1 Demultiplex, the channels within a group of four cannot arbitrarily drive
Time between Demultiplex clock edges
(Typical)
Source synchronous clocking
Clocks per moduleFour
Clocks with merged modulesWhen merged, the slave modules have two clocks available from the master module.
Clock groupsFour for a single module and for a merged system
Size of clock group valid FIFOFour stages; this allows four (source synchronous or other) clocks to occur before the
Source synchronous clock alignment windowChannel-to-channel skew only
Any individual channel can be demultiplexed with its partner channel. If multiplexi ng is
enabled, all of the A and D channels are multiplexed; there is no individual selection.
Channels demultiplex as follows:
A3(7:0) to/from D3(7:0)
A2(7:0) to/from D2(7:0)
A1(7:0) to/from D1(7:0)
A0(7:0) to/from D0(7:0)
enabled, all of the A and D channels are multiplexed; there is no individual selection.
Channels demultiplex as follows:
A3(7:0) to/from C3(7:0)
A2(7:0) to/from C2(7:0)
A1(7:0) to/fromD1(7:0) 64+4 modules only
A0(7:0) to/fromD0(7:0) 64+4 modules only
Unlike the 2:1 Demultiplex, the channels within a group of four cannot arbitrarily drive
the others.
E3(7:0) toE2(7:0), E1(7:0), E0(7:0) 128+8 modules only
A3(7:0) toA2(7:0), D3(7:0), D2(7:0)
A1(7:0) toA0(7:0), D1(7:0), D0(7:0)
C3(7:0) toC2(7:0), C1(7:0), C0(7:0)
CK3toCK2, Q3, Q2 128+8 modules only
CK1toCK0, Q1, Q0
the others.
A1(7:0) toA0(7:0), D1(7:0), D0(7:0) 64+4 modules only
C3(7:0) toC2(7:0), A3(7:0), A2(7:0)
Same limitations as normal synchronous acquisition
Including the local clocks, the total is six clocks.
clock that completes the Clock Group Valid signal for that group
1- 6
TLA7AXX Logic Analyzer Module Service Manual
Specifications
Table 1- 4: Clocking (Cont.)
CharacteristicDescription
Source synchronous clock resetThe Clock Group Valid FIFO can be reset in one of the two ways:
1. By the overflow of a presettable (1--255) 8-bit counter that counts one of the
following clocks: 2 ns Clock or the master “heartbeat” clock (synchronous or
asynchronous). An active edge places the reset count to its preset value. An active
clock edge will clear the Clock Group Valid reset before the clock gets to the FIFO so
that no data is lost.
2. By enabling an external reset. In this mode, one of the clock channels must be
traded on the master module to act as a level-sensitive reset input. Any one of the
clocks can be selected. A polarity selection is available. This mode affects all Clock
Group Complete circuits.
Neither one of the above modes can be intermixed; one or the other must be
selected.
Clocking state machine
Pipeline delaysChannel groups can be programmed with a pipeline delay of 0 through 7 active clock
changes.
1
Specification only applies with asynchronous (internal) clocking. With synchronous clocking, the setup and hold window
size applies.
2
Any or all clock channels can be enabled. For an enabled clock channel, either the rising, falling, or both edges can be
selected as active clock edges. Clock channels are stored.
3
Qualifier channels are stored.
4
This is a special mode and has some limitations such as the clocking state machine and trigger state machine only
running at 500 MHz.
TLA7AXX Logic Analyzer Module Service Manual
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Specifications
Table 1- 5: TLA7Axx module trigger system
CharacteristicDescription
Trigger resources
Word recognizers and range recognizers16, word recognizers can be combined to form full width, double bounded range
recognizers. The following selections are available:
16 word recognizers0 range recognizers
13 word recognizers1 range recognizer
10 word recognizers2 range recognizers
7 word recognizers3 range recognizers
4 word recognizers4 range recognizers
Range recognizer channel orderFrom most-significant probe group to least-significant probe group:
Missing channels for modules with fewer than 136 channels are omitted. When
merged, the range recognition extends across the modules. The master module
contains the most-significant groups.
Glitch detector
(normal asynchronous clock mode)
Minimum detectable glitch pulse width
(Typical)
Setup and hold violation detector
(normal asynchronous clock mode)
Channel groups can be enabled to detect glitches.
Glitches are subject to pulse width variations of up to ±125 ps
Minimum input pulse width (single channel)
P6860 high density probe:500 ps
P6880 differential probe:500 ps
P6810 general purpose probe:750 ps
Any channel group can be enabled to detect a setup or hold violation. The range is
from 8.0 ns before the clock edge to 8.0 ns after the clock edge in 0.125 ns steps. The
channel setup and hold violation size can be individually programmed.
The range can be shifted towards the positive region by 0 ns, 4 ns, or 8 ns. W ith a
0 ns shift, the range is +8 ns to --8 ns; witha4nsshift,therange is +12 ns to --4 ns;
with an 8 ns shift, the range is +16 ns to 0 ns. The sample point selection region is the
same as the setup and hold window.
Any setup value is subject to variation of up to the channel skew specification. Any
hold value is subject to variation of up to the channel skew specification.
Transition detector16 transition detectors.
Any channel group can be enabled or disabled to detect a rising transition, a falling
transition, or both rising and falling transitions between the current valid data sample
and the previous valid data sample.
Counter/timers2 counter/timers, 51 bits wide, can be cl ocked up to 500 MHz
Maximum count is 2
Maximum time is 4.5 × 106seconds or 52 days
Counters can be used as setable, resetable, and testable flags. Counters can be
reset, do nothing, incremented, or decremented. Timers can be reset, started,
stopped, or not changed. Counters and timers have zero reset latency and one clock
terminal count latency.
Signal In 1A backplane input signal.
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51
TLA7AXX Logic Analyzer Module Service Manual
Specifications
Table 1- 5: TLA7Axx module trigger system (Cont.)
CharacteristicDescription
Signal In 2A backplane input signal.
Trigger InA backplane input signal that causes the main acquisition and the MagniVu
acquisition to trigger if they are not already triggered.
Active trigger resources16 maximum (excluding counter/timers)
Word recognizers are traded off one-for-one as Signal In 1, Signal In 2, glitch
detection, setup and hold detection, or transition detection resources are added.
Trigger states16
n Trigger state sequence rateSame rate as valid data samples received. 500 MHz maximum.
Trigger machine actions
Main acquisition triggerTriggers the main acquisition memory
Main trigger positionProgrammable to any data sample (2 ns boundaries)
MagniVu triggerMain acquisition machine controls the triggering of the MagniVu memory
MagniVu trigger positionProgrammable within 2 ns boundaries and separate from the main acquisition
memory trigger position
Increment/decrement counterCounter/timers used as counters can be incremented or decremented.
Start/stop timerEither of the two counter/timers used as timers can be started or stopped.
Reset counter/timerEither of the two counter/timers can be reset.
When a counter/timer used as a timer is reset, the timer continues in the started or
stopped state that it was prior to the reset.
Reloadable word recognizer (snapshot)Loads the current acquired data sample into the reference value of the word
recognizer via a trigger machine action. All data channels are loaded into their
respective word recognizer reference register on a one-to-one manner.
Reloadable word recognizer latency378 ns
Signal OutA signal sent to the backplane to be used by other modules
Trigger OutA signal sent to the backplane to trigger other modules
Storage control
StorageStorage is allowed only if a specific condition is met. The condition can use any of the
trigger resources except for counter/timers. Storage commands defined in the current
trigger state will override the global storage control.
Storage can be used to start the acquisition with storage initially turned on (default
setting) or off.
By eventStorage can be turned on or off; only the current sample can be stored. Event storage
control overrides any global storage commands.
Block storage (store stretch)When enabled, 31 samples are stored before and after the valid sample.
This allows the storage of a group of samples around a valid data sample when
storage control is being used. This only has meaning when storage control is used.
Block storage is disallowed when glitch storage or setup and hold violation storage is
enabled.
TLA7AXX Logic Analyzer Module Service Manual
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Specifications
Table 1- 5: TLA7Axx module trigger system (Cont.)
CharacteristicDescription
Glitch violation storageGlitch violation information can be stored to acquisition memory with each data
sample when asynchronous clocking is used. The acquisition data storage size is
reduced by half when this mode is enabled (the other half holds violation information).
The fastest asynchronous clock rate is reduced to 4 ns.
Setup and hold violation storageSetup and hold violation information can be stored to acquisition memory with each
data sample when synchronous clocking is used. The acquisition data storage size is
reduced by half when this mode is enabled (the other half holds violation information).
The maximum synchronous clock rate in this mode is 235 MHz.
Table 1- 6: MagniVu acquisition
CharacteristicDescription
MagniVu sampling periodData is asynchronously sampled and stored every 125 ps in a separate MagniVu
(high-resolution) memory. The storage speed can be changed by software to 250 ps,
500 ps, or 1000 ps with no loss in memory depth so that the high resolution memory
covers more time at a higher resolution.
MagniVu memory depthApproximately 16 K per channel. The MagniVu memory is separate from the main
acquisition memory.
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TLA7AXX Logic Analyzer Module Service Manual
Specifications
Table 1- 7: Merged modules
CharacteristicDescription
Number of merged modules2, 3, 4, or 5 adjacent modules can be merged. Only 102-channel modules or
136-channel modules can be merged. Merged modules can have unequal channel
widths and channel depths.
See Figure 1--1 for location of modules in a merged configuration.
Number of channels after mergingThe sum of all channels available on each of the merged modul es incl uding clocks
and qualifiers. No channels are lost when modules are merged.
Merged system acquisition depthChannel depth is equal to that of the shallowest module.
Number of clock and qualifier channels after
merging
Merged system trigger resourcesThe same as a single module except for word recognizer width, setup and hold
Merged range significanceMost significant Master, Slave 1, Slave 2
The qualifier channels on the slave modules can only be used as data channels. They
cannot influence the actual clocking function of the logic analyzer (for example, l og
strobe generation).
The clock channels on the slave TLA7Axx modules can capture data on those
modules for source-synchronous applications. Each slave module contributes four
additional clock channels to the merged set. All clock and qualifier channels are
stored to acquisition memory.
violation detector width, glitch detector width, and transition detector width has
increased to equal that of the merged channel width. Range recognizers will increase
to the merged channel width up to three modules; range recognition is not supported
on the two outside slave modules.
S
L
A
V
E
4
Figure 1- 1: Location of modules in merged configurations
TLA7AXX Logic Analyzer Module Service Manual
S
L
A
V
E
2
M
A
S
T
E
R
S
L
A
V
E
1
S
L
A
V
E
3
1- 11
Specifications
Table 1- 8: Data handling
CharacteristicDescription
Nonvolatile memory retention time (Typical)The battery life is integral to the NVRAM; battery life is > 10 years.
Table 1- 9: Environmental
CharacteristicDescription
Temperature
Operating5 _Cto+40 _C/hour maximum gradient, non-condensing
The maximum operating temperature is derated at altitudes above 305 m (1000 ft.) by
1 _C per 305 m (1000 ft.) above 1525 m (5000 ft.) altitude
Non-operating--20 _Cto+60 _Cwith15 _C/hour maximum gradient, without disk media
installed in disk drives.
Humidity
Operating(No media in floppy or CD in mainframe drive):
20% to 80% relative humidity, noncondensing, maximum wet-bulb temperature of
+29 _C (derates relative humidity to 45% at 40 _C)
Non-operating(No media in floppy or CD in mainframe drive):
8% to 80% relative humidity, non-condensing, maxi mum wet-bulb temperature of
+29 _C (derates relative humidity to 22% relative humidity at 50 _C)
Altitude
OperatingTo 3048 m (10,000 ft.) provide maximum ambient temperature is derated by 1 _C per
305 m (1000 ft.) above 1525m (5000 ft.)
Non-operating12192 m (40,000 ft.)
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TLA7AXX Logic Analyzer Module Service Manual
Specifications
Table 1- 10: Mechanical
CharacteristicDescription
MaterialChassis parts are constructed of aluminum alloy. The front panel is constructed of
plastic laminated to steel front panel. Circuit boards are c onstructed of glass laminate.
Weight
136-channel module2.438 kg (5 lb 6 oz.)
102-channel module2.381 kg (5 lb 4 oz.)
68-channel module2.282 kg (5 lb 0.5 oz.)
34-channel module2.254 kg (4 lb 15.5 oz.)
Shipping weight3.515 kg (7 lb 12 oz.) for 136-channel module when packaged for domestic shipment
Overall dimensions
Height262 mm (10.32 in)
Width61 mm (2.39 in) with merge connector in the recessed position
Width increases by 10.41 mm (0.41 in) with merge connector in the extended position
Length373 mm (14.7 in)
Mainframe interlock1.4 ECL keying is implemented
Table 1- 11: TLA7Axx Logic Analyzer Module Certifications and compliances
CategoryStandards or description
EC Declaration of Conformity -EMC
1
Emissions which exceed the levels required by this standard may occur when this equipment is connected to a test object.
Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility. Compliance was
demonstrated to the following specifications as listed in the Official Journal of the European
Communities:
EN 61326EMC requirements for Class A electrical equipment for
measurement, control and laboratory use.
IEC 61000--4--2Electrostatic discharge immunity (Performance criterion B)
IEC 61000--4--3RF electromagnetic field immunity (Performance criterion A)
IEC 61000--4--4Electrical fast transient / burst immunity (Performance criterion B)
IEC 61000--4--5Power line surge i mmunity (Performance criterion B)
IEC 61000--4--6Conducted RF immunity (Performance criterion A)
IEC 61000--4--11Voltage dips and interruptions immunity (Performance criterion B)
EN 61000--3--2AC power line harmonic emissions
1
TLA7AXX Logic Analyzer Module Service Manual
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Specifications
Table 1- 12: TLACAL2 Performance verification and adjustment fixture characteristics
CharacteristicDescription
Input channelsOne external clock input
Input voltage < 1 V referenced to ground, 50 Ω termination
P6860 deskew and minimum pulse timing
outputs
P6860-setup and hold outputs136 grouped into eight 17-channel connectors
P6880 deskew and minimum pulse timing
outputs
P6860/80 gain and offset outputs68 grouped into four 17-channel connectors
P6810 gain and offset outputs34 grouped into four 8-channel connectors and one 2-channel connector for the clocks
Analog output SMB inputsFour inputs with 50 Ω termination each
DMM test pointsOne connection to a GPIB-controlled digital voltmeter
Number of module interface connector (MIC)
boards connected at one time
Number of Probe interface connector (PIC)
boards connected at one time
Timing section output amplitude100E Motorola ECLinPS family outputs referenced to +2 V amplitude
Gain/Offset output voltage range-- 5 V t o + 5 V
MIC board test current range¦3mA
Interface ports
RS-2329-pin RS-232 serial communications interface
JTAGProgramming interface for the xilinx CPLD
Power distribution system
Power consumption40 W maximum
Source voltage and frequency100 V
Fuse ratings
34 + 5 grouped into three P6860 connectors, two with 17 channels and one with five
channels
34 + 5 grouped into three P6860 connectors, two with 17 channels and one with five
channels
Four. Each board requires a ribbon cable and two MCX cable attachments to the main
board
One. The board must be connected to the ribbon connector labeled PIC.
115 V
to 240 V
RMS
±10%, 400 Hz, continuous range CAT II
RMS
±10%, 50 Hz to 60 Hz continuous range CAT II
RMS
1- 14
100 V to 120 V operation
200 V to 240 V operation
Internal power supply
5.0 mm x 20 mm, 1.0 A FAST 250 V; Tektronix part number 159-0356-00
5.0 mm x 20 mm, 0.5 A FAST 250 V; Tektronix part number 159-0351-00
Cooling clearance51 mm (2 in) front, sides, and rear. Prevent blockage of airflow to bottom of
instrument by placing on a solid, noncompresable surface.
Atmospherics
Temperature
Operating20 °Cto30°C
Non-operating+5 °Cto+50°Cwith15°C gradient per hour noncondensing
Humidity
Operating20% to 80% relative humidity, noncondensing
Non-operating8% to 80% relative humidity, noncondensing and as limited by a maximum wet bulb
temperature of +40 °C
Altitude
OperatingTo 3048 m (10,000 ft.)
Non-operatingTo 12192 m (40,000 ft.)
Mechanical shock30 Gs maximum
with respect to ground
P-P
with respect to ground
P-P
TLA7AXX Logic Analyzer Module Service Manual
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Specifications
g
gyp
Table 1- 13: TLACAL2 Performance verification and adjustment fixture certifications and compliances
CategoryStandards or description
EC Declaration of Conformity -Low Voltage
U.S. Nationally Recognized
Testing Laboratory Listing
Canadian CertificationCAN/CSA C22.2 No. 1010.1Safety requirements for electrical equipment for measurement,
Additional ComplianceIEC61010-1/A2:1995Safety requirements for electrical equipment for measurement,
Installation (Overvoltage)
Category Descriptions
Pollution Degree DescriptionsA measure of the contaminates that could occur in the environment around and within a product.
Equipment TypeTest and measuring
Safety ClassClass 1 (as defined in IEC 61010-1, Annex H) -- grounded product
Overvoltage CategoryOvervoltage Category II (as defined in IEC 61010-1, Annex J)
Pollution DegreePollution Degree 2 (as defined in IEC 61010-1). Note: Rated for indoor use only.
Compliance was demonstrated to the following specification as listed in the Official Journal of the
European Communities:
Low Voltage Directive 73/23/EEC, amended by 93/68/EEC
EN 61010-1/A2:1995Safety requirements for electrical equipment for measurement
control and laboratory use.
UL3111-1Standard for electrical measuring and test equipment.
control, and laboratory use.
control, and laboratory use.
Terminals on this product may have different installation (overvoltage) category designations. The
installation categories are:
CAT IIIDistribution-level mains (usually permanently connected). Equipment at this level is
typically in a fixed industrial location.
CAT IILocal-level mains (wall sockets). Equipment at this level includes appliances, portable
tools, and similar products. Equipment is usually cord-connected.
CAT ISecondary (signal level) or battery operated circuits of electronic equipment.
Typically the internal environment inside a product is considered to be the same as the external.
Products should be used only in the environment for which they are rated.
Pollution Degree 1No pollution or only dry, nonconductive pollution occurs. Products in
this category are generally encapsulated, hermetically sealed, or
located in clean rooms.
Pollution Degree 2Normally only dry, nonconductive pollution occurs. Occasionally a
temporary conductivity that is caused by condensation must be
expected. This location is a typical office/home environment.
Temporary condensation occurs only when the product is out of
service.
Pollution Degree 3Conductive pollution, or dry, nonconductive pollution that becomes
conductive due to condensation. These are sheltered locations
where neither temperature nor humidity is controlled. The area is
protected from direct sunshine, rain, or direct wind.
Pollution Degree 4Pollution that generates persistent conductivity through conductive
dust, rain, or snow. Typical outdoor locations.
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TLA7AXX Logic Analyzer Module Service Manual
Operating Information
This chapter provides a high-level overview of installation instructions and
operating information for the logic analyzer module. The operating information
is limited to the functions you need to perform the procedures found in this
document. You can find detailed operating instructions in the Tektronix LogicAnalyzer Family User Manual and in the online help.
Installation
The Tektronix Logic Analyzer User Manual provides detailed installation
instructions for the logic analyzer module and the mainframes. This section
contains a summary of those installation procedures. This section also describes
the installation procedures for the TLACAL2 Performance Verification and
Adjustment fixture; this fixture is required for the TLA7Axx series logic
analyzer module performance verification procedures, certification procedures,
and adjustment procedures.
Logical Address
Every plug-in module in the logic analyzer must have a unique logical address;
no two modules can have the same address. Two rotary switches on rear panel
select the logical address (see Figure 2--1 for the switch locations). When
servicing the logic analyzer module, you should have no need for changing the
address. However, in most cases the switches should be set to FF, the factory
default setting to enable dynamic auto configuration.
NOTE. Do not set the logic analyzer module logical address to 00. Logical
address 00 is reserved for the controller.
Dynamic Autoconfiguration With Dynamic Auto Configuration (recommended)
selected (hexadecimal FF or decimal 255), the logic analyzer automatically sets
the address to an unused value. For example, if there are modules set to
addresses 01 and 02 already in your system, the resource manager will automatically assign the logic analyzer module an address other than 01 or 02.
Static Logical Address Static logical address selections set the address to a fixed
value. A static logical address ensures that the logic analyzer module address
remains fixed for compatibility with modules that require a specific address
value. Remember that each module within the logic analyzer must have a unique
address to avoid communication problems.
TLA7AXX Logic Analyzer Module Service Manual
2- 1
Operating Information
Least-significant
digit
Most-significant
digit
Merged Modules
Module Installation
Figure 2- 1: Logical address switches
You can combine up to five logic analyzer modules to create a single module that
operates off a single time base. This process is called merging modules. The
procedures for merging modules is described under Merged Modules beginning
on page 2--14.
Install the modules in a mainframe before applying power to the mainframe.
Before installing the modules, determine if you want to merge the modules. You
must physically connect the module together before installing them in the
mainframe.
Slide the module all of the way into the mainframe. Use the injector/ejector
handles to seat the module and then hold the modules in place by tightening the
retaining screws (see Figure 2--2 on page 2--3). If you are installing merged
modules, slide them into the mainframe as a group and then seat them in place
individually.
2- 2
TLA7AXX Logic Analyzer Module Service Manual
Operating Information
For more detailed information on installing modules, refer to Appendix D:
TLA700 Module Installation in the Tektronix Logic Analyzer Family User
Manual.
Portable mainframeBenchtop mainframe
TLACAL2 Fixture
Installation
Retaining screws
Injector/ejector handles
Figure 2- 2: Installing modules in t he mainframe
The TLACAL2 Performance V erification and Adjustment test fixture is required
to perform the performance verification procedures, certification procedures, and
adjustment procedures. If you will not be running the performance verification or
adjustment procedures, you can skip this section.
You will need to connect the TLACAL2 fixture to the logic analyzer and
associated test equipment before running procedures. A complete list of test
equipment is listed in Table 4--1 on page 4--3.
TLA7AXX Logic Analyzer Module Service Manual
2- 3
Operating Information
CAUTION. Static discharge can damage the TLACAL2 fixture and its associated
circuit boards. Make sure that you install the fixture in a static-free environment.
Always wear a grounded wrist strap while handling the TLACAL2 fixture and its
associated equipment. For more information on antistatic procedures, see
Preventing Electrostatic Discharge on page 6--1.
Due to the short cable lengths, you must decide upon a location for the TLACAL2 fixture that allows you to connect the test fixture to the logic analyzer
module under test (less than two feet). The fixture can be placed on top of a
benchtop mainframe or on a static free work surface adjacent to the logic
analyzer.
The following steps assume that you have all the required test equipment
necessary to run the performance verification procedures, certification procedures, and adjustment procedures. See Table 4--1 on page 4--3 for a complete list
of test equipment.
1. If you have not already done so, power down the mainframe and install the
logic analyzer module.
2. Connect the RS-232 cable from the COM A connector of the logic analyzer
mainframe to the RS-232 connector on the performance verification fixture.
NOTE. When using GPIB, make sure that you select unique GPIB addresses on
the individual instruments to avoid conflicts.
3. Connect the GPIB cable from the digital multimeter to the oscilloscope.
4. Connect the iView cable from the USB connector on the logic analyzer
mainframe to the GPIB connector on the DMM.
NOTE. Steps 5 and 6 assume that you will be connecting the TLACAL2 fixture to
a 136-channel logic analyzer module. You only need to connect one MIC board
and one ribbon cable per 34 channels on the logic analyzer module. If your logic
analyzer module has less than 136 channels, you can reduce clutter by only
connecting the cables that you need for your instrument configuration.
5. Connect one end of the ribbon cables to the MIC 0/P IC, MIC 1, MIC 2 and
MIC 3 connectors on the performance verification fixture.
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TLA7AXX Logic Analyzer Module Service Manual
Operating Information
NOTE. The MIC boards and the PIC board look very similar. The MIC boards
have two coaxial cable connections while the PIC board has only one (see
Figure 2--3).
To quickly identify the MIC and PIC boards, you may want to attach a small
label on the plastic housing of the MIC connector with the name of the MIC and
PIC connectors (such as MIC0).
MICPIC
Two connector
Figure 2- 3: MIC and PIC board identification
6. Connect the four MIC boards (labeled 6795258B1 on the anti-static bags) to
the other end of each ribbon cable.
7. Connect a black coaxial cable from each of the Current Source (CS)
connectors from the performance verification fixture to the CS connectors on
each of the MIC boards.
8. Attach one of the color bands to each end of the current source cables to help
you identify them. Use your own color-scheme when connecting the color
bands.
9. Connect a black coaxial cable from each of the Test Voltage (TV) connectors
from the performance verification fixture to the TV connectors on each of
the MIC boards.
CAUTION. Power down the performance verification test fixture, before connecting or disconnecting any Module Interface Cards (MICs) or the Probe Interface
Cards (PICs). Connecting or disconnecting items to the performance verification
fixture while power is applied will damage the performance verification fixture
or other test equipment.
One connector
TLA7AXX Logic Analyzer Module Service Manual
2- 5
Operating Information
10. Connect the power cord to the performance verification fixture.
11. Leave the four P6041 cables and the PIC board disconnected. You will
connect these to the performance verification fixture and logic analyzer
module during the actual procedures.
Figure 2--4 shows the TLACAL2 fixture with the major components connected
to the logic analyzer.
MIC board
Ribbon cables
Black coaxial
cable (8)
P6041 cable (4)
Figure 2- 4: TLACAL2 performance verification and adjustment test fixture
Digital
multimeter lead
RS-- 232 cable
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TLA7AXX Logic Analyzer Module Service Manual
Software Installation
Operating Information
The logic analyzer module operation is controlled by the Tektronix logic
analyzer application software located on the hard disk of the mainframe. This
software is installed when you purchased your logic analyzer or when you
upgrade the software through one of the TLA7UP Field Upgrade Kit options.
The logic analyzer module contains firmware which may need to be upgraded to
function with the latest system software version; the firmware upgrade procedure
is provided with the TLA7UP Field Upgrade Kit. The procedure is also
described in this manual under Updating or Restoring the Logic AnalyzerFirmware beginning on page 6--35.
To service the logic analyzer module and to complete the performance verification or adjustment procedures, you must install the Performance Verification
software from disc 1 of the TLA application CD on the mainframe’sharddisk.
Verify the Performance
Verification Software
Version
Install the Performance
Verification Software
If your logic analyzer mainframe already has the performance verification
software installed on the hard disk, you should verify that the software version
matches that of the TLA application software. The TLA application software
version is printed on disc 1 of the Tektronix Logic Family Analyzer application
software CD.
If the version of the performance verification software on the hard disk does not
match the CD label or the TLA application software, you must delete the older
version before you can install the newer version. Refer to Removing the Software
for instructions on removing the software.
Use the following steps to install the performance verification software:
1. Close all open applications.
2. Insert Disc 1 of the Tektronix Logic Analyzer Family application software
CD in the CD-ROM drive.
3. On the desktop select Start → Run to display the Run dialog.
4. In the Run dialog box, enter the following path or use the Browse button to
navigate to the path:
D:\TLA7Axx PV Adjust\Setup.exe
5. Click OK to begin the installation program and then follow the on-screen
instructions to install the software.
6. Remove the CD when the installation is complete.
TLA7AXX Logic Analyzer Module Service Manual
2- 7
Operating Information
Removing the Software
Operating Information
Front Panel
Use the following steps to remove the performance verification software from
the hard disk in the mainframe. These steps are necessary when you want to
upgrade the performance verification software.
1. On the desktop, select Start → Settings→ Control Panel
2. Double-click on Add/Remove Programs.
3. Select TLA7AxxPVAdjust.
4. Click the Change/Remove button.
This section provides a high-level overview of the controls and connectors of the
logic analyzer module. It provides a high-level overview of the logic analyzer
user interface and software.
Figure 2--5 shows the connectors and indicators on the front panel of a 136-channel logic analyzer module. Modules with fewer channels look and operate the
same, but without the additional probe connectors.
Injector/Ejector Handles. The injector/ejector tabs are used to seat and unseat the
modules in the mainframe.
READY Indicator. The READY indicator lights continuously after the logic
analyzer module successfully completes the power-on process. If the indicator
fails to light within five seconds of power-on, an internal module failure may be
present.
ACCESSED Indicator. The ACCESSED indicator lights anytime the controller
accesses the logic analyzer module.
ARM’D Indicator. The ARM’D indicator lights when the logic analyzer module is
armed during an acquisition.
TRIG’D Indicator. The TRIG’D indicator lights when the logic analyzer module
triggers and stays on until the module finishes acquiring data.
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TLA7AXX Logic Analyzer Module Service Manual
Operating Information
Injector/ejector handle
READY Indicator
ACCESSED Indicator
ARM’D Indicator
TRIG’D Indicator
Probe connectors
Analog signal
outputs
Configuration label
E2
Probe retainer mounting holes
Figure 2- 5: Front panel of the logic analyzer module
Probe Connectors. The probe connectors are color-coded to match the labels on
the probes. Each probe connector accepts a 34-channel active probe consisting of
32 data channels and two clock/qualifier channels.
Probe Retainer Mounting Holes. The threaded probe retainer mounting holes
provide a means of securely holding the probes in place. You must tighten the
retaining screws to ensure a good ground connection for the probes to the
module.
TLA7AXX Logic Analyzer Module Service Manual
2- 9
Operating Information
Analog Outputs. Each module has four analog output BNC connectors regardless
of the number of acquisition channels. The analog output connectors allow you
to tap into the analog signal of any channel and connect the signals to an external
instrument, such as an oscilloscope. This feature allows you to view the analog
component of a selected channels without requiring a separate oscilloscope probe
connection.
Configuration Label. The configuration label indicates the speed and memory
depth of the logic analyzer module.
Merge Cable Connectors
Merge connectors on both sides of the module allow you to merge up to five
individual modules to create a single module with up to 680 channels with full
clock and trigger functionality. The 34-channel and 68-channel modules do not
have merge connectors.
The merge connector on the left side of the module can be physically extended to
connect with the connector of an adjacent module. The connector is shipped in
the recessed position and must be extended when merging modules (see
Figure 2--6).
The merge connector on the right side of the module provides play between
modules allow easy installation of the module set in a mainframe.
2- 10
Merge connector
Figure 2- 6: Merge connector (shown in the extended position)
TLA7AXX Logic Analyzer Module Service Manual
Operating Information
Rear Panel
Figure 2--7 shows the connectors and controls on the rear panel of the logic
analyzer module.
P1 ConnectorP2 Connector
Logical address
switches
Figure 2- 7: Rear panel controls and connectors
P1 and P2 Connectors. The acquisition board and the local processor unit (LPU)
provide the electrical connections from the module to the mainframe. These
electrical connections include power distribution, processor communications,
and intermodule communications.
Logical Address Switches. The logical address switches determine the logical
address of the module. These switches should normally be set to address FF. For
more information on these switches and their settings, refer to Logical Address
on page 2--1.
Online Help
Diagnostics
Most user information for operating the logic analyzer module is available
through the online help within the logic analyzer application. You can select the
online help from the pull-down help menu, by clicking the Help button in a
dialog box, or by using the what’s this help (click the question mark icon, drag
the cursor to the item of interest on the screen, and then release the mouse
button).
The logic analyzer module performs power-on diagnostics each time you power
on the mainframe. The Calibration and Diagnostics property sheet appears at
power-on if one or more of the diagnostics fail.
For more detailed tests, you can execute the extended diagnostics or the self
calibration. For more information on the diagnostics, refer to Calibration andDiagnostic Procedures beginning on page 6--29.
NOTE. For best results, only run the diagnostics with the probes disconnected
from the module.
TLA7AXX Logic Analyzer Module Service Manual
2- 11
Operating Information
Self Calibration
Self calibration is an internal routine that optimizes performance. No external
equipment or user actions are required to complete the procedure. The logic
analyzer saves the data generated by the self calibration in non-volatile memory.
NOTE. Performing the self calibration does not guarantee that all logic analyzer
module parameters operate within limits. Operation within limits is achieved by
performing the Adjustment Procedures. Proper operation may be confirmed by
performing the performance verification procedures in this same manual.
You can run the self calibration at any time during normal operation. To maintain
measurement accuracy, perform the self calibration if more than one year has
elapsed since the last self calibration.
You can check the status of the self calibration in the Calibration and Diagnostics
property sheet.
If the logic analyzer module loses power during the self calibration, rerun the
self calibration following the next power-on. The self calibration data generated
before power was interrupted must be replaced with a complete set of new data.
For best results, always perform the self calibration after at least a 30 minute
warm-up.
Menu Overview
The logic analyzer module may require several minutes to run the self calibration
depending on the number of channels. Select Calibration and Diagnostics
property sheet from the System menu. Select the Self Calibration tab page and
select the logic analyzer module. Click on the Run button to start the self
calibration. Upon completing the self calibration the logic analyzer module menu
selection changes from Running to Calibrated.
The logic analyzer is controlled by interactive windows through the TLA
application. The TLA application consists of the following windows:
HSystem Window. This window provides an overview of the entire logic
analyzer. Use this window to navigate through the logic analyzer.
The center of the System window displays icons that represent hardware
modules installed in the logic analyzer. The icons are linked to the other
windows in the logic analyzer.
HSetup Window. A setup window exists for each module in the logic analyzer.
It contains all of the setup information for the logic analyzer module such as
clocking, memory depth, threshold information, and channel information.
Menus and dialogs contain information to set up the window as needed.
2- 12
TLA7AXX Logic Analyzer Module Service Manual
Operating Information
For the DSO, the Setup window contains setup information for each DSO
channel such as the input voltage ranges, bandwidth, coupling, and
termination. It also contains horizontal setup information and a link to the
DSO Trigger window.
An External Oscilloscope setup window may be present if your logic
analyzer connects to an external oscilloscope through the iView cable. This
setup window provides setup, trigger, and connection information for
oscilloscope and logic analyzer.
HTrigger Window. The Trigger window provides access to the logic analyzer
module or DSO module trigger setups. For either module, you can specify
various trigger events and trigger actions to help you capture the data that
you are interested in.
HListing Data Window. The Listing Data window displays acquired data as
tabular text. Each column of data represents one group of data or other
logical data information, such as time stamps. Each row of data represents a
different time that the data was acquired; newer samples of data display
below older samples.
HWaveform Data Window. The Waveform Data window displays acquired
data as graphical waveforms. All defined channel groups display as busforms
for the logic analyzer and as individual analog channels for the DSO module.
HOn/Off Buttons. These buttons enable or disable the operation of the
modules. Click the appropriate button to enable or disable the modules.
Refer to the online help for more information on the individual menus, icons,
and fields within each window. You may also want to refer to the Tektronix LogicAnalyzer Family User Manual for additional information.
TLA7AXX Logic Analyzer Module Service Manual
2- 13
Operating Information
Merged Modules
The logic analyzer allows you to merge individual 102-channel or 136-channel
module modules to provide a logic analyzer module with up to 680 channels.
The following procedures provide information for merging and unmerging logic
analyzer modules.
Merging Rules
Before merging modules to create a merged module set, review the following
guidelines.
HYou can only merge 102-channel and 136-channel modules.
HYou cannot merge TLA7Axx modules with TLA7Lx, TLA7Mx, TLA7Nx,
TLA7Px, or TLA7Qx logic analyzer modules.
HModules containing different memory depths can be merged, but will default
to the shallowest memory depth being used.
HAll modules in a merged set must have the same maximum clock rate.
HModules must be physically adjacent and connected before you can merge
them together in the System Configuration dialog box (see the instructions
under Merge Procedure).
HYou can merge two, three, four, or five modules together.
HThe master module must have an equal or greater number of channels than
the module(s) with which it is merged. If there is a second slave module, the
Slave 1 must have an equal or greater number of channels as the Slave 2.
Slave 3 cannot have more channels than the master module or Slave 1 and
Slave 2. Slave 4 cannot have more channels than the master modules or any
other slave modules.
2- 14
HA merged module set can only reside in a single mainframe. You cannot
merge modules across mainframes.
HTo merge a module to an established merged module set, the established
merged module set must be first unmerged through software via the System
Configuration dialog box. Unmerged modules are the only potential
candidates to add to a merged configuration.
TLA7AXX Logic Analyzer Module Service Manual
Operating Information
Merge Procedure
Complete the following steps to create a merged module from two or more
individual modules. You must complete these steps prior to installing the
modules in a mainframe.
CAUTION. To avoid damaging the mainframe or any modules, always power
down the mainframe before removing or installing modules.
1. Determine which modules will reside in the higher-numbered slots in a
single mainframe. You will need to place the merge connector of these
modules in the extended position. The module in the lowest-numbered slot
must have the merge connector in the recessed position.
Use Figure 2--8 as a guide for determining the location of the master module
with the merged module set. Even though Figure 2--8 shows a five module
set, you can still use the illustration to position the master module with
respect to the slave module. For example, if you have a two module set, the
master module is located in the lower-numbered slot, and the slave module is
in the higher-numbered slot.
S
L
A
V
E
4
Figure 2- 8: Location of modules in a merged system
2. Place the module on the right side.
3. Using a Torx T-10 screw driver, remove the two screws holding the merge
connector to the module (see Figure 2--9).
4. Gently lift the merge connector out of the slot and place it in the extended
position such that the screw holes line up over the two standoff posts.
5. Install the two screws into the standoff posts. Tighten the screws to 4-in. lbs.
S
L
A
V
E
2
M
A
S
T
E
R
S
L
A
V
E
1
S
L
A
V
E
3
6. Repeat steps 2 through 5 for the remaining modules.
TLA7AXX Logic Analyzer Module Service Manual
2- 15
Operating Information
Remove two screws
Standoff posts
Figure 2- 9: Removing the merge connector assembly from the module
NOTE. When installing the merged modules into a mainframe, you may need the
help of another individual.
7. Place the first pair of modules to be merged side-by-side such that the merge
connector assemblies line up and connect between the two modules.
8. Push the two modules together until the connectors are seated in place.
9. Add any additional modules to the set.
2- 16
TLA7AXX Logic Analyzer Module Service Manual
Operating Information
Figure 2- 10: Connecting the logic analyzer modules together
CAUTION. Ensure that the mainframe is powered down before installing or
removing the modules.
10. Place the merged module set into the mainframe.
11. Align the tops and bottoms of the modules with the slots in the mainframe
(see Figure 2--11 on page 2--18). You may need the help of another individual if your merged module set contains more than two modules.
TLA7AXX Logic Analyzer Module Service Manual
2- 17
Operating Information
Align
Align
Slide module set
all the way in
2- 18
Latch in place
Figure 2- 11: Installing the merged module set in the mainframe
12. Slide the modules all the way into the mainframe until they rest against the
rear panel connectors.
TLA7AXX Logic Analyzer Module Service Manual
Operating Information
13. Use the injector handles to firmly seat the modules in place one at a time and
then tighten the hold-down screws on each module. The merge cable
assembly should allow enough play between two side-by-side modules.
14. After installing all of the modules, power on the mainframe and complete the
merge process listed under the Merged Modules tab in the System Configuration dialog box.
Unmerge Procedure
Although you can unmerge modules from a merged set from within the TLA
application without physically separating modules, there will be times when you
have to physically unmerge the modules. The following procedures provide the
steps for unmerging the modules.
1. Power down the mainframe before removing the modules from the mainframe.
2. Use the ejector handles to disengage each module in the merged module set
from the mainframe.
3. With the assistance of another individual, slide all of the merged modules out
of the mainframe and place them on a static-free working surface.
4. Gently separate the modules on at a time from the merged module set.
5. Lay the modules on their right sides.
6. Remove the two Torx T-10 screws that hold the merge cable assembly to the
module.
7. Place the merge cable assembly into the recessed position.
8. Install the two Torx T-10 screws onto the assembly and tighten the screws to
4in-lbs.
9. Repeat steps 6 through 8 for the other modules.
You can now reinstall the modules in the mainframe as needed.
TLA7AXX Logic Analyzer Module Service Manual
2- 19
Operating Information
2- 20
TLA7AXX Logic Analyzer Module Service Manual
Theory of Operation
This chapter describes the general operation of the logic analyzer module. This
information is intended to help you isolate faults to the circuit board or probe
level. It supplements diagnostic and troubleshooting information presented in the
Troubleshooting section beginning on page 6--25.
The following Block Level Description describes circuit operation to the
functional block level. Block diagrams are located in the Diagrams chapter
beginning on page 9--1.
Block Level Description
The block level description provides an overview of each functional circuit
within the logic analyzer module. Except for the number of channels, the basic
operation is the same for each individual module and for merged modules.
The basic logic analyzer module consists of two main circuit boards: the Local
Processing Unit (LPU) board and the Acquisition board. Each circuit board has
two connectors on the rear of the boards that provide connections to the
mainframe.
Up to four active probes per module acquire data from the target system and send
it to the logic analyzer module for processing. The logic analyzer module can use
different types of probes (such as general purpose, high-density, or differential)
depending on the user’s application.
A single 102-channel or a 136-channel logic analyzer module can be merged
with up to five modules to create a two-, three-, four-, or five-module-wide logic
analyzer. The 34-channel and 68-channel modules do not support merging.
Local Processor Unit (LPU) Board
The LPU board controls instrument hardware, signal acquisition, power
conditioning, and communications functions. A 160-pin connector provides
interconnections with the acquisition board for power supplies, data and control
signals.
Processor System
The processor system contains a microprocessor that controls the entire
instrument. Commands and data sent to the instrument through the mainframe
pass through the communications interface, which resides on the bus. The bus
also routes data between the main processor system and the acquisition board.
TLA7AXX Logic Analyzer Module Service Manual
3- 1
Theory of Operation
The processor system includes the instrument firmware. To facilitate upgrades,
the firmware resides in Flash ROM. The processor system also includes the
nonvolatile RAM (NVRAM) used for the calibration constants, module serial
numbers, and PowerFlex configuration information.
Communications Interface
Power Supplies
Acquisition Board
Clock Circuitry
Probe Interface
The Communications Interface transfers commands and data between the
mainframe and the mainframe controller. Signals pass between the logic analyzer
module and the mainframe through the rear connectors.
The onboard power supplies receive +5 V, --5.2 V, ±12 V, and ±24 V from the
mainframe through the rear connectors. Voltage converters produce the +2.5 V
supply for use on the acquisition board through the 160-pin connector between
the LPU and acquisition board.
The acquisition board accepts input signals from the probes and converts them to
digital information. A 160-pin connector provides interconnections with the LPU
board.
The system clock is derived from the 10 MHz clock from the backplane through
a phase-locked loop. The acquisition run circuitry is integrated with the clock
circuitry to support time correlation.
The probe interface consists of ASICs that receive data from the probes, compare
the data against a threshold, and transfer the digital information to CMOS ASICs
via differential outputs. Each ASIC in the probe interface receives 16 data
channels and one clock channel. In addition to providing digital signals to the
CMOS ASICs, the probe interface ASICs contain outputs for the Analog output
signals.
Analog Output Interface
Power Supplies
3- 2
The acquisition board has four SMA connectors that connect to the four BNC
connectors on the front panel. The software (via the user interface) determines
which signals will be sent to the four Analog output connectors. Regardless of
the number of channels in the module, there will always be four signals available
to route to the Analog output connectors.
Voltage converters produce the +3.3 V supply on the acquisition board and the
±3 V supplies for the active probes.
TLA7AXX Logic Analyzer Module Service Manual
Theory of Operation
Trigger and Storage
Control Circuitry
Acquisition Memory
Clocking and triggering is controlled by a single ASIC. This ASIC determines
when acquisition data should be sampled based on the clock information and
qualifier information. The ASIC also contains 16 Event resources for the
purposes of word recognition, range recognition, and other trigger functions. In
merged configuration, the ASIC communicates information between modules to
ensure proper triggering.
The acquisition memory stores acquired data. The memory can be set up to store
all data samples, or it can be split to store data samples and either glitch
information or setup and hold violation information.
When the memory is split, only half the memory depth is available and can only
run at half the speed. Every stored data sample takes up two memory locations,
one to hold the actual data sample and the other to hold the corresponding glitch
information or the setup and hold information.
Glitch storage is only enabled with asynchronous clocking while setup and hold
storage is only enabled with synchronous clocking.
The trigger machine can trigger on either glitches or setup and hold violations
without storing information. This allows the user to trigger on a glitch or on a
setup and hold violation at maximum speed and maximum memory depth.
Backplane Interface
The backplane interface provides the interface with the mainframe and the
acquisition board. This interface contains intermodule signals that communicate
to other modules in the logic analyzer mainframe. The interface also provides the
10 MHz reference clock for the clocking circuitry.
TLA7AXX Logic Analyzer Module Service Manual
3- 3
Theory of Operation
Probes
The logic analyzer module connects to the target system through 34-channel
probes (32 data channels and two clock/qualifier channels). Depending on the
number of channels in the logic analyzer module, you can connect up to four
logic analyzer probes to the module.
Currently four different types of active probes are supported for the logic
analyzer module:
The two high-density probes connect directly to the circuit boards in the target
system. The probe connections are footprints designed on the circuit boards. The
footprints eliminate the need for additional electro-mechanical parts for probe
connectors.
Merged Modules
The general purpose probes have lead sets that connect to several general-purpose connectors on the target system.
Detailed information on the probes is available in the P68xx Logic AnalyzerProbe Instruction Manual.
A merged module consists of a Master module and one or more Slave modules
connected together by a merge cable connector. Each module has its own merge
cable connectors. The local bus sends the system clock of the Master module to
the Slave modules. The merged modules must be located in adjacent slots.
The merge connector passes 48 signals between adjacent modules excluding the
system clock. These signals consist of 16 trigger event signals, two storage
control signals, 26 clock sample/control signals, and four data-login control
signals.
3- 4
TLA7AXX Logic Analyzer Module Service Manual
Performance Verification
This chapter contains procedures for functional verification, certification, and
performance verification procedures for the logic analyzer modules. Generally,
you should perform these procedures once per year or following repairs that
affect certification.
NOTE. This chapter does not contain any procedures for verifying, adjusting, or
certifying the TLACAL2 Performance Verification fixture. If the test fixture
requires, verification, adjustment, or certification, you must return the test
fixture to the factory.; contact your local Tektronix service center for more
information.
Summary V erification
Functional verification procedures verify the basic functionality of the instrument inputs, outputs, and basic instrument actions. These procedures include
power-on diagnostics, extended diagnostics, and manual check procedures.
These procedures can be used for incoming inspection purposes.
Certification procedures certify the accuracy of an instrument and provide a
traceability path to national standards. Calibration data reports are produced for
the logic analyzer modules as output from the performance verification and
adjustment software.
Performance verification procedures confirm that a product meets or exceeds the
performance requirements for the published specifications documented in the
Specifications chapter of this manual. Refer to Figure 4--1 on page 4--2 for a
graphic overview of the procedures.
Adjustment procedures check for, and if necessary, correct any adjustment errors
discovered when performing functional or performance verification procedures.
The adjustment procedures for the logic analyzer modules are controlled by
software but some of the adjustment procedures require manual intervention to
move probes or to change test equipment settings.
The performance verification and adjustment software is provided on the product
CD-ROM. If you have not already done so, refer to Software Installation
beginning on page 2--7 for instructions on installing the software.
The procedures use external, traceable signal sources to directly test characteristics that are designated as checked (n)intheSpecifications chapter of this
manual. Table 4--1 shows the required equipment list; this equipment is required
for the performance verification and adjustment procedures.
Table 4- 1: Test equipment
Item number and descriptionMinimum requirementsExample
Performance Verification
1. MainframeTLA700 Series Mainframe with TLA Application software V4.2 or higher
2. Logic analyzer module with
probes
3. Logic analyzer probesP6810, P686x, or P6880 logic analyzer
4. Performance Verification test
fixture with accessories
5. Digital Multimeter with probes1Agilent 34401A, 6.5 digit display, 35 ppm, 1
8. GPIB cable2 m GPIB cableTektronix part number 012-0991-00
9. RS-232 cable2 m RS-232 cable, 9-pin female-to-female
10. BNC cables4 Analog Output BNC-to-BNC, low loss, 33 in.
1
The digital multimeter is required to complete the Probe+PIC performance verification and adjustment procedure, the
Module+MIC performance verification and adjustment procedures, the Module+Probe Gain & Offset performance
verification procedures, and the certification procedures.
2
The oscilloscope is required to complete the performance verification procedures for the Analog Output tests.
2
TLA7Axx Series logic analyzer moduleNo substitute allowed
probes. One probe required for every
34-channels on the logic analyzer module
year accuracy, 1000 readings per minute,
100 nV sensitivity, GPIB controllable
Tektronix TDS694C Four channels, 3 GHz,
10GS/s
Windows 2000 compatible with 2 m cable
connector
10x cables
TLA721 Benchtop Mainframe or
TLA715 Portable Mainframe
No substitute allowed
No substitute allowed
No substitute allowed
No substitute allowed
Tektronix iView cable
Tektronix part number 012-1379-00
Tektronix part number 174-4595-00
TLA7AXX Logic Analyzer Module Service Manual
4- 3
Performance Verification
Test Equipment Setup
The TLACAL2 Performance Verification and Adjustment fixture and other test
equipment requires preliminary installation and setups. You will need the
equipment listed in Table 4--1 on page 4--3 to complete the performance
verification procedures. If you have not already installed the test fixture and test
equipment, refer to TLACAL2 Fixture Installation on page 2--3 for the prelimi-
nary installation instructions.
Most of the individual procedures require specific test equipment setups
depending on your logic analyzer configuration. These setups are listed prior to
each test and are also described in the TLACAL2 software windows.
CAUTION. Always power down the TLACAL2 test fixture before connecting or
disconnecting the ribbon cables. Failure to do so can damage the test fixture, the
PIC, or the MICs.
Starting the Performance
Verification Software
The performance verification software is a separate application that consists of
executable software files. The software must be installed on the hard disk before
you can use it; refer to Software Installation on page 2--7 for instructions on
installing the software. You must quit the logic analyzer application before
starting the performance verification software; you cannot run both applications
at the same time.
Use the following steps to start and run the software. These steps are repeated
under the individual procedures but are listed here to give you an overview of
using the software.
1. Allow the logic analyzer and all test equipment to warm up for at least 30
minutes.
just (or double-click on the TLA7AxxPVAdjust icon on the desktop). An
application window similar to Figure 4--2 appears.
4. Select the module that you want to test from the list and then click either the
Verification button, Adjustment button, or Certification button depending on
the type of procedure that you want to perform.
After selecting the type of test that you want to run, a new dialog box appears.
The dialog box contains the following information:
HName, slot location, and serial number of the module to be tested
HProbe selection box
HA list of procedures organized by groups
The individual procedures are organized by groups that require the same test
equipment setups. When moving between different groups, you will be asked to
power down the test fixture, make the necessary connections In some cases, you
will be asked to power down the test fixture, close the application, change the
connections, and then restart the application.
Depending on the type of probe selected, the related procedures are indicated by
a checkmark adjacent to the procedure. You can disable any procedures by
clearing the procedure. All selected procedures will be tested beginning with the
top-most procedure in the dialog box. In most cases, you will want to run all of
the selected tests.
The software determines which GPIB instruments are required to perform the
selected procedures and sets up the individual instruments. If any equipment
problems are found, an appropriate error message will be displayed.
TLA7AXX Logic Analyzer Module Service Manual
4- 5
Performance Verification
NOTE. Some of the procedures require a TDS694C oscilloscope and a Agilent
34401A digital multimeter connected to the logic analyzer via GPIB (see the
footnotes in Table 4--1 for details). If you do not have the TDS694C oscilloscope
or the digital multimeter connected to the GPIB, you cannot start the performance verification procedures that require those instruments.
Obtaining Test Results
Troubleshooting
After completing the various procedures, you have the option of saving the test
results to a text file on the hard disk. You can assign a name to the file from a
dialog box. You can then edit the file as necessary using any of the Windows
tools or print the file.
If any tests fail, use the following steps to troubleshoot the problems:
1. Check that all test equipment is powered on and has the proper warm-up
time.
2. Check all test equipment for improper or loose connections.
3. Verify that the probes are properly connected to the logic analyzer module
and that the retaining screws are tightened. The retaining screws must be
tightened to provide a good ground connection for the probes.
4. Verify that all probes are properly connected to the test fixture. If you are
using P686x or P6880 probes, make sure that the alignment pin on the probe
head is aligned with the hole on the test fixture. You must ensure a tight
connection on the test fixture for these probes.
5. If you are using P686x or P6880 probes, verify that the test fixture connections are clean and free of dust or dirt. If necessary, refer to the cleaning
procedures in the Maintenance chapter.
4- 6
6. Rerun mainframe or module diagnostics.
7. Run the self calibration for the module in question from the TLA applica-
tion.
8. Run the adjustment procedures for the module in question.
9. Run the tests a second time to verify the failure.
10. If all else fails, contact your local Tektronix service center for additional
information.
TLA7AXX Logic Analyzer Module Service Manual
Functional Verification
Performance Verification
This section contains instructions for performing the functional verification
procedures for the logic analyzer modules. These procedures provide an easy
way to check the basic functionality of the logic analyzer modules and probes.
The TLACAL2 test fixture or software is not required for any of the functional
verification checks.
If any check within this section fails, refer to the Troubleshooting section in the
Maintenance chapter of this manual for assistance. Failed tests indicate the
instrument needs to be serviced.
The functional verification procedure consists of the following parts:
HModule self tests and power-on diagnostics
HExtended diagnostics
HProbe functional verification
This procedure provides a functional check only. If more detailed testing is
required, perform the Performance Verification Procedures beginning on
page 4--12 after completing this procedure.
Test Equipment
Setup
Perform these tests whenever you need to gain confidence that the instrument is
operating properly.
You will need the following equipment to complete the functional verification
procedure:
HTLA700 Series logic analyzer mainframe with one logic analyzer module
installed (more modules are required to check the merged functionality)
HAt least one logic analyzer probe
It is assumed that the logic analyzer module is properly installed in the mainframe. Refer to Module Installation on page 2--2 for module installation
instructions.
Power on the logic analyzer mainframe and allow a 30-minute warm-up period
before continuing with any procedures in this section.
TLA7AXX Logic Analyzer Module Service Manual
4- 7
Performance Verification
Module Self Tests and
Power-On Diagnostics
During power-on, the installed modules perform an internal self test to verify
basic functionality. No external test equipment is required. The self tests require
only a few seconds per module to complete. The front-panel ARM’Dand
TRIG’D indicators blink during the self test. After testing completes, the front
panel indicators have the following states:
HREADY — Green (on)
HACCESSED — off
HARM’D — off
HTRIG’D — off
Next, the power-on diagnostics are run. If any self tests or power-on diagnostics
fail, the instrument displays the Calibration and Diagnostics property sheet.
NOTE. If any diagnostics fail, you may need to run the self calibration before
attempting to service the logic analyzer module. This may be especially true
after you install the logic analyzer module in the mainframe for the first time.
The Self Calibration procedure is listed under Self Calibration beginning on
page 5--5.
Logic Analyzer Module
Functional Verification
Procedure
The following procedure checks the basic functionality of the logic analyzer
module. You can perform this procedure with individual modules or with merged
modules. Functional verification consists of running the extended diagnostics.
NOTE. Running the extended diagnostics invalidates any acquired data. If you
want to save any of the acquired data, do so before running the extended
diagnostics.
Perform the following steps to complete the functional verification procedures:
1. Disconnect any probes connected to the logic analyzer module.
2. In the logic analyzer application, go to the System menu and select
Calibration and Diagnostics.
3. Click the Extended Diagnostics tab.
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TLA7AXX Logic Analyzer Module Service Manual
Performance Verification
4. Select the top level test and click the Run button.
The diagnostics will perform each one of the tests listed in the menu under
the module selection. All tests that displayed an Unknown status will change
to a Pass or Fail status depending on the outcome of the tests.
5. Scroll through the test results and verify all tests pass.
NOTE. If the extended diagnostics fail, run the self calibration procedures as
described under Self Calibration beginning on page 5--5 for the logic analyzer
module under test and then rerun the extended diagnostics.
Probe Functional
Verification
There are two ways of verifying probe functionality. One way is to connect the
probes from the logic analyzer module to a signal source, adjust the appropriate
threshold voltage levels, and then verify that the logic analyzer acquires the data
in a listing or waveform window.
Alternately, you can perform the performance verification procedures which will
verify that the logic analyzer and the attached probes meet or exceed the
advertised specifications. The performance verification procedures are covered in
the remainder of this chapter.
TLA7AXX Logic Analyzer Module Service Manual
4- 9
Performance Verification
Performance Verification Instructions
This section contains information to verify the performance of the logic analyzer
module. Testing is performed using the performance verification software and
the performance verification fixture.
As a general rule, these tests should be done once a year.
Prerequisites
The performance verification procedures in this section comprise an extensive,
valid confirmation of performance and functionality when the following
requirements are met:
HThe performance verification software must be loaded on the hard disk.
Refer to Software Installation on page 2--7.
HThe logic analyzer module must be installed in a mainframe and operating
for at least 30 minutes at an ambient temperature between +20 _C
and +30 _C.
HThe TLACAL2 test fixture and other related test equipment must be
installed, connected, and operating for at least 30 minutes at an ambient
temperature between +20 _C and +30 _C.
HThe logic analyzer module and the TLACAL2 test fixture must have been
last adjusted at an ambient temperature between +20 _C and +30 _C.
HThe logic analyzer and TLACAL2 test fixture must be in an operating
environment within the limits described in the Specifications chapter of this
manual.
HWhen verifying the performance of merged modules consisting of different
types of individual modules, the merged module can be tested without
separation. The performance verification software runs independent of the
logic analyzer application and does not recognize configuration settings.
4- 10
HIf you are using P686x probes or P6880 probes, you must use the thick board
elastomers (available in the 020-2452-xx accessory kit). Refer to the
Operating Basics chapter of the P68xx Logic Analyzer Probe Instruction
Manual for instructions on installing or changing the elastomers.
TLA7AXX Logic Analyzer Module Service Manual
Performance Verification
Procedure Overview
When using the performance verification software, you will connect external test
equipment and probes to the logic analyzer module in response to prompts on the
screen. The software automatically selects the module settings and determines
the results of each test.
The results of the tests are recorded in a temporary file and are available upon
test completion for completing test records.
NOTE. Before testing an instrument following repair, you must first complete the
adjustment procedure.
Table 4--2 lists the specifications as checked (n)intheSpecifications chapter for
the TLA7Axx logic analyzer modules and the TLA7Axx performance verification software checks used to verify those specifications. In addition to the
software test listed in the table, some specifications are verified by the built-in
diagnostics. By running all tests and diagnostics, you will verify the performance
of the logic analyzer module and probes.
Table 4- 2: Performance verification tests
SpecificationTest method
Threshold accuracyVerified by the Thresholds test. Certified by
running Certification procedure; refer to LogicAnalyzer Module Certification beginning on
page 4--30.
Channel-to-channel skewVerified indirectly by the Setup and Hold
window size procedure under Setup and Hold
Internal sampling periodVerified indirectly by Pulse Width procedure
and time base Accuracy procedure
Minimum recognizable word (across all
channels)
Setup and hold window size (data and
qualifiers)
Maximum synchronous clock rateDiagnostics verify the clock detection/sampling
Counters and timersVerified by diagnostics
Trigger state sequence rateVerified indirectly by the at-speed diagnostics
Verified indirectly by the Setup and Hold
window size and by the Internal Sampling
Period
Verified directly by Setup and Hold procedure
(P6880 probe only)
circuitry. Bandwidth is verified by Setup and
Hold procedures and by the Pulse Width
procedure
and the Internal Sampling Period
TLA7AXX Logic Analyzer Module Service Manual
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Performance Verification
y
c
analy
Performance Verification Procedures
Table 4--3 provides a summary of the performance verification procedures. The
procedures are listed by groups and include individual procedures. Some of these
procedures are optional and are recommended for performing a thorough
performance verification. Others are the minimum required to verify the
advertised specifications of the logic analyzer module. Each group requires
different equipment setups.
Probe+PIC ProcedureOptional procedure; digital multimeter
Probe Gain and Offset
Module+MIC ProceduresOptional procedures; digital multimeter
Input Resistance
Digital Gain and Offset
required;verifies probe onl
required
Analog Gain and Offset
Module+Probe Gain and Offset ProceduresRequired procedures; digital multimeter
Threshold
Analog Gain and Offset
Module+Probe Timing ProceduresRequired procedures
Pulse Width
Timebase
Analog Outputs to OscilloscopeOptional procedure. TDS694C oscilloscope
Setup and Hold ProcedureCan only be verified with P6860 high density
Setup and Hold
1
Certifiable parameter. This procedure can be run separate from the performance
verification procedures. Select Certification button from main window in the
software. The Certification instructions are listed on page 4- 30.
1
required
required
logi
zer probe
4- 12
TLA7AXX Logic Analyzer Module Service Manual
Performance Verification
Use the tables and illustrations to set up and execute the procedures. The
procedures assume that you have already installed the performance verification
software on the logic analyzer mainframe. The procedures also assume that you
will only perform the procedures selected in each group.
The procedures will vary depending on the type of probes that you have
connected to the logic analyzer module and on the number of channels on your
logic analyzer module.
Figure 4--3 shows the locations of connectors and test points on the performance
verification fixture. You may need to refer to this illustration when connecting
probes and cables to the fixture. You should also refer to the label on top of the
test fixture.
TLA7AXX Logic Analyzer Module Service Manual
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Performance Verification
4- 14
Figure 4- 3: TLACAL2 test fixture connections
TLA7AXX Logic Analyzer Module Service Manual
Performance Verification
Probe+PIC Procedure
This procedure verifies probe gain and offset circuitry in the individual probes.
This procedure is not dependent on any previous procedures. Use this procedure
to verify the functionality of the probes. The procedure is optional and is not
required to verify any module specifications.
The following procedure assumes that you will be testing one probe at a time
without performing any other procedures.
Equipment Setups. It is assumed that the logic analyzer mainframe is already
connected to the TLACAL2 test fixture and that the performance verification
software is already installed on the hard disk of the logic analyzer. The following
procedures describe the specific connections from the probes and to the test
fixture.
CAUTION. If you have any P6041 cables connected from the logic analyzer to the
TLACAL2 test fixture, always disconnect one end of each P6041 cable before
powering down the test fixture.
Always power down the test fixture before connecting or disconnecting ribbon
cables. Failure to do so can damage the test fixture, the PIC, or the MICs.
1. Power down the TLACAL2 test fixture before connecting the ribbon cables
and the (PIC).
CAUTION. To avoid damaging the test fixture and the PICs through static
discharge, always wear a grounded antistatic wrist strap. Avoid handling
individual components of the test fixture without static protection.
2. Connect one of the ribbon cables to the MIC0/PIC connector (J141) on the
test fixture.
3. Connect the PIC to the other end of the ribbon cable.
4. Connect any one of the coaxial cables from the TV (test voltage) connectors
on the test fixture to the TV connector on the PIC.
5. Connect the multimeter leads to the DMM test points (J390) on the test
fixture. Connect the positive lead to the + connector and the negative
(ground) lead to the -- connector.
6. Connect the probe to be tested to the PIC.
7. If you are adjusting a P6810 probe:
a. Connect the lead sets to the P6810 GAIN & OFFSET Data connections
at J100, J101, J110, and J111 on the test fixture.
TLA7AXX Logic Analyzer Module Service Manual
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Performance Verification
b. Connect the clock/qualifier leads to the SNGL square pins at J220. Make
sure that you connect the ground side or the “-- ” side to the square pins
with the GND label.
8. If you are testing a P686x probe, connect the probe heads to the P6860/80
GAIN & OFFSET connections at J120 and J130 on the test fixture. If you
are testing a P6880 probe, connect the probe heads at J120, J121, J130, and
J131 on the test fixture.
NOTE. Make sure that the alignment pin on the P686x or P6880 probe head is
aligned with the hole on the test fixture. Tighten the probe head screws by
alternating between them until they are finger tight (no more than 1 in-lbs of
torque).
9. Power on the test fixture, logic analyzer mainframe, and allow all test
equipment to warm up for 30 minutes before continuing.
Start the Software. Complete the following steps to start the performance
verification software and to run the verification procedures:
1. Exit the TLA application on the logic analyzer.
2. Double-click the TLA7Axx Performance Verification icon on the desktop to
open the application (see Figure 4--2 on page 4--5).
3. Click the Verification button to start the software. A Verification dialog box
similar to Figure 4--4 appears.
4. Select the probe type near the bottom of the dialog box.
5. Select the Probe Gain & Offset procedure (the default setting is not checked)
and clear any other procedures.
NOTE. The software will perform all selected procedures in the listed sequence.
To limit the test to specific procedures, clear any procedures that you do not
want to run.
6. Click the Next button at the bottom of the dialog box to begin the procedure.
A list of connection instructions displays for the current procedure.
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TLA7AXX Logic Analyzer Module Service Manual
Performance Verification
Figure 4- 4: Default Verification dialog box
7. Verify that your connections match those of the instructions. Then click the
Next button to begin the procedure.
The software will begin the verification procedures and display a list of test
results in the window.
8. After the procedure finishes, click the Next button to open the Finish dialog
box where you can save the results to a file. Enter a file name and click the
Save button. You can use the Save dialog to save the file to a folder of your
choice or use the default location.
9. If you are testing more than one probe, disconnect the first probe and
connect the next probe. There is no need to power down the test fixture
while changing probes.
10. Click the Back button to return to the instructions dialog.
11. Click the Next button to test the next probe.
TLA7AXX Logic Analyzer Module Service Manual
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Performance Verification
12. After completing the last probe, you can exit the application or return to the
main window to perform other procedures.
CAUTION. Power down the test fixture before disconnecting the PIC from the test
fixture. Failure to do so can damage the test fixture or the PIC.
Module+MIC Procedures
These procedures verify the input resistance, the digital gain and offset, and the
analog gain and offset parameters of the logic analyzer probe input sections.
These procedures are performed without the logic analyzer probes. The
procedures are optional and do not verify any advertised specifications.
However, they are helpful in verifying the logic analyzer functionality and for
troubleshooting purposes.
Equipment Setups. It is assumed that the logic analyzer is already connected to
the TLACAL2 test fixture and that the performance verification software is
already installed on the hard disk of the logic analyzer. It is also assumed that the
logic analyzer module is installed in the logic analyzer mainframe. The
following procedures describe the specific connections from the logic analyzer
module to the MICs and to the TLAC AL2 test fixture.
CAUTION. If you have any P6041cables connected from the logic analyzer to the
TLACAL2 test fixture, always disconnect one end of each P6041 cable before
powering down the test fixture.
Always power down the test fixture before connecting or disconnecting ribbon
cables. Failure to do so can damage the test fixture, the PIC, or the MICs.
1. Power down the TLACAL2 test fixture before connecting the ribbon cables
and the MICs.
4- 18
CAUTION. To avoid damaging the test fixture, the PIC, or the MICs through
static discharge, always wear a grounded antistatic wrist strap. Avoid handling
individual components of the test fixture without static protection.
2. Connect the four ribbon cables to the ribbon cable connectors on the test
fixture.
3. Disconnect the PIC if it is connected to the ribbon cable.
4. Connect a MIC to each of the ribbon cables.
5. Connect any one of the coaxial cables from the CS (current source)
connectors on the test fixture to the CS connector on the MIC.
TLA7AXX Logic Analyzer Module Service Manual
Performance Verification
6. Connect any one of the coaxial cables from the TV (test voltage) connectors
on the test fixture to the TV connector on the MIC.
7. Connect the multimeter leads to the DMM test points (J390) on the test
fixture. Connect the positive lead to the + connector and the negative
(ground) lead to the -- connector.
8. Connect a P6041 cable from each of the Analog Output BNC connectors to
the corresponding connector on the front of the test fixture (if necessary,
refer to the label on the test fixture for the connection locations).
9. Connect the ribbon cables with the MICs to the appropriate connector on the
logic analyzer module.
10. Power on the test fixture and the logic analyzer and allow a 30 minute
warm--up period.
Start the Software. Complete the following steps to start the software:
1. Exit the TLA application on the logic analyzer.
2. Double-click the TLA7Axx Performance Verification icon on the desktop.
An application window similar to Figure 4--2 on page 4--5 appears.
3. If you have more than one logic analyzer module in your mainframe, select
the logic analyzer module to be verified from the list in the window.
4. Click the Verification button to start the software. A Verification dialog box
similar to Figure 4--4 on page 4--17 appears.
5. Select Input Resistance, Digital Gain and Offset, and Analog Gain and
Offset and clear any other procedures.
NOTE. The software will perform all selected procedures without interruption. To
limit the test to specific procedures, clear any procedures that you do not want to
run.
6. Click the Next button at the bottom of the dialog box to begin the procedure.
A list of connection instructions displays for the current procedure.
7. Verify that your connections match those of the instructions. Then click the
Next button to begin the procedures.
The software will begin the verification procedures and display a list of
results in the window.
TLA7AXX Logic Analyzer Module Service Manual
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Performance Verification
8. After the procedure finishes, click the Next button to open the Finish dialog
box where you can save the results to a file. Enter a file name and click the
Save button. You can use the Save dialog to save the file to a folder of your
choice or use the default location.
9. Click the Finish button to finish the procedure and return to the startup
window.
CAUTION. Always disconnect one end of each P6041 cable before powering
down the TLACAL2 test fixture. Failure to do so can damage the test fixture.
10. Disconnect one end of each P6041 cable before powering down the
TLACAL2 test fixture.
Module+Probe Gain and
Offset Procedures
These procedures verify the analog gain and offset parameters of the logic
analyzer module. These procedures require you to connect the logic analyzer
probes to the test fixture; the actual connections depend on the type of probe and
the number of channels of your logic analyzer module. The procedures also
verify the Threshold specifications of the logic analyzer module; this is a
certifiable parameter.
Equipment Setups. It is assumed that the logic analyzer is already connected to
the TLACAL2 test fixture and that the performance verification software is
installed on the hard disk of the logic analyzer. It is also assumed that the logic
analyzer module is installed in the logic analyzer mainframe. The following
procedures describe the specific connections from the logic analyzer module to
the probes and to the TLACAL2 test fixture.
CAUTION. Always power down the TLACAL2 test fixture before connecting or
disconnecting the ribbon cables. Failure to do so can damage the test fixture, the
PIC, or the MICs.
There is no need to power down the test fixture if you are only connecting
probes, the P6041 cables, or the digital multimeter to the test fixture.
1. Connect a P6041 cable from each of the Analog Output BNC connectors to
the corresponding connector on the front of the test fixture (if necessary,
refer to the label on the test fixture for the connection locations).
4- 20
2. Connect the multimeter leads to the DMM test points (J390) on the test
fixture. Connect the positive lead to the + connector and the negative
(ground) lead to the -- connector.
TLA7AXX Logic Analyzer Module Service Manual
Performance Verification
3. Connect a logic analyzer probe from the logic analyzer C0/C1/C2/C3 input
connector (or the C3/C2/A3/A2 connector for 34- or 68-channel modules) to
the appropriate connectors on the test fixture as described in the following
steps.
4. If you are using a P6810 probe:
a. Connect the lead sets to the P6810 GAIN & OFFSET Data connections
at J100, J101, J110, and J111 on the test fixture.
b. Connect the clock/qualifier leads to the SNGL square pins at J220. Make
sure that you connect the ground side or the “-- ” side to the square pins
with the GND label.
5. If you are using a P686x probe, connect the probe heads to the P6860/80
GAIN & OFFSET connections at J120 and J130 on the test fixture. If you
are testing a P6880 probe, connect the probe heads at J120, J121, J130, and
J131 on the test fixture.
NOTE. Make sure that the alignment pin on the P686x or P6880 probe head is
aligned with the hole on the test fixture. Tighten the probe head screws by
alternating between them until they are finger tight (no more than 1 in-lbs of
torque).
6. Power on the test fixture, logic analyzer, and the other test equipment. Allow
all test equipment to warm up for 30 minutes before continuing the
procedure.
Start the Software. Complete the following steps to start the software and to run
the procedures:
1. Exit the TLA application on the logic analyzer.
2. Double-click the TLA7Axx Performance Verification icon on the desktop.
An application window similar to Figure 4--2 on page 4--5 appears.
3. If you have more than one logic analyzer module in your mainframe, select
the logic analyzer module from the list in the window.
4. Click the Verification button to start the software. A Verification dialog box
similar to Figure 4--4 on page 4--17 appears.
5. Select the probe type near the bottom of the dialog box.
6. Verify that Threshold and Analog Gain and Offset are selected under
Module+Probe Gain & Offset Procedures. Clear all other procedures in the
dialog box.
TLA7AXX Logic Analyzer Module Service Manual
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Performance Verification
NOTE. The software will perform all selected procedures in the listed sequence.
To limit the test to specific procedures, clear any procedures that you do not
want to run. If you want to run all of the selected procedures, you will need to
play close attention to the connection instructions as they appear on the screen.
7. Click the Next button at the bottom of the dialog box to begin the procedure.
A list of connection instructions displays for the procedure.
NOTE. Some of the connection information may vary depending on the configuration of your logic analyzer module. The connection information in the window
should track your logic analyzer module; the printed instructions in this section
may differ because they assume you are testing a 136-channel module.
8. Verify that your connections match those of the instructions. Then click the
Next button to begin the procedure.
The software will begin the procedures and display a list of results in the
window.
9. After the first set of procedures are done, click the Next button to display the
instructions for the next step. In most cases you only need to connect a
different probe to the test fixture.
10. After changing the connections, click the Next button to continue the
procedures.
11. Repeat steps 8 through 9 as indicated by the software.
12. After the procedure finishes, click the Next button to open the Finish dialog
box where you can save the results to a file. Enter a file name and click the
Save button. You can use the Save dialog to save the file to a folder of your
choice or use the default location.
13. Click the Finish button to complete the process.
CAUTION. Always disconnect one end of each P6041 cable before powering
down the TLACAL2 test fixture. Failure to do so can damage the test fixture.
14. Disconnect one end of each P6041 cable before powering down the
TLACAL2 test fixture.
4- 22
TLA7AXX Logic Analyzer Module Service Manual
Performance Verification
Module+Probe Timing
Procedures
These procedure verify the minimum pulse width specification, the accuracy of
the time base, and the analog output path.
NOTE. The Analog Output to Oscilloscope procedure is an optional procedure.
You can only perform this procedure if you have a TDS694C oscilloscope
connected to the analog outputs of the logic analyzer module; no other
oscilloscopes can be used.
Equipment Setups. It is assumed that the logic analyzer is already connected to
the TLACAL2 test fixture and that the performance verification software is
installed on the hard disk of the logic analyzer. It is also assumed that the logic
analyzer module is installed in the logic analyzer mainframe. The following
procedures describe the specific connections from the logic analyzer module to
the probes and the TLACAL2 test fixture.
CAUTION. If you have any P6041cables connected from the logic analyzer to the
TLACAL2 test fixture, always disconnect one end of each P6041 cable before
powering down the test fixture.
Always power down the test fixture before connecting or disconnecting ribbon
cables. Failure to do so can damage the test fixture, the PIC, or the MICs.
1. Connect a probe to each probe connector on the logic analyzer module.
2. Refer to Table 4--4 on page 4--24 and to Figure 4--5 on page 4--25 to connect
the probe from the logic analyzer C0/C1/C2/C3 input connector (or the
C3/C2/A3/A2 connector if you have a 34- or 68-channel module) to the
appropriate connectors on the test fixture.
NOTE. Make sure that the alignment pin on the P686x or P6880 probe head is
aligned with the hole on the test fixture. Tighten the probe head screws by
alternating between them until they are finger tight (no more than 1 in-lbs of
torque).
3. If you are using a P6810 probe, make sure that you connect the ground or
low side of the lead sets to the GND side of the connectors on the test
fixture. Connect the clock/qualifier leads to the DESKEW REF connector;
make sure that you connect the ground side or the “-- ” side to the square pins
with the GND label. The single ground lead does not need to be connected.
(J881, J882, J883, J884 data connectors
J880 Deskew Ref connector)
P686xP6860 DESKEW AND MIN PULSE
(J610, J611 data connectors
J612 deskew ref connector)
P6880P6880 TIMING
(J581, J582, J583, J584 data connectors,
J680 Deskew Ref connector)
4. If you are going to perform the Analog Output to Oscilloscope procedure,
connect the BNC-to-BNC cable from each of the Analog Output BNC
connectors on the logic analyzer module to the corresponding inputs on the
oscilloscope.
5. Power on the test fixture, logic analyzer, and oscilloscope and allow all test
equipment to warm up for 30 minutes before continuing the procedure.
Start the Software. Complete the following steps to start the software and to run
the procedures:
1. Exit the TLA application on the logic analyzer.
2. Double-click the TLA7Axx Performance Verification icon on the desktop.
An application window similar to Figure 4--2 on page 4--5 appears.
3. If you have more than one logic analyzer module in your mainframe, select
the logic analyzer module from the list in the window.
4. Click the Verification button to start the software. A Verification dialog box
similar to Figure 4--4 on page 4--17 appears.
5. Select the probe type near the bottom of the dialog box.
6. Verify that Pulse Width and Timebase are selected under Module+Probe
Timing Procedures.
7. If you want to perform the analog output procedure, select the Analog
Output to Oscilloscope (it is not checked).
8. Clear all other procedures in the dialog box.
TLA7AXX Logic Analyzer Module Service Manual
4- 25
Performance Verification
NOTE. The software will perform all selected procedures without interruption. To
limit the test to specific procedures, clear any procedures that you do not want to
run. If you want to run all of the selected procedures, you will need to play close
attention to the connection instructions as they are displayed on the screen.
9. Click the Next button at the bottom of the dialog box to begin the procedure.
A list of connection instructions displays for the first procedure.
NOTE. Some of the connection information may vary depending on the configuration of your logic analyzer module. The connection information in the window
should track your logic analyzer module; the printed instructions in this section
may differ because they assume you are testing a 136-channel module.
10. Verify that your connections match those of the instructions. Then click the
Next button to begin the procedure.
The software will begin the procedures and display a list of results in the
window.
NOTE. The pulse width test may show failures at the initial threshold settings.
However, the test will automatically rerun at other threshold settings where it
looks for an overall “pass” at a threshold. You can view the overall pass/fail
result at the top of the results for the pulse width test.
11. After the first set of procedures are done, click the Next button to display the
instructions for the next step. In most cases you only need to connect a
different probe to the test fixture.
12. After changing the connections, click the Next button to continue the
procedures.
13. Repeat steps 8 through 9 as indicated by the software.
14. When the software is ready to start the Analog Output to Oscilloscope
procedure, a dialog appears on the screen. This dialog gives you three
choices about pausing the procedure. Select one of the options to either
pause on failures, pause on every step, or do not pause on any steps (default
selection). Then click the Next button to continue.
NOTE. Selecting one of the pause options allows you to manually check the
oscilloscope display for pass or fail information. You will not be able to change
the pause options until the entire procedure is complete.
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TLA7AXX Logic Analyzer Module Service Manual
Performance Verification
15. After the procedure finishes, click the Next button to open the Finish dialog
box where you can save the results to a file. Enter a file name and click the
Save button. You can use the Save dialog to save the file to a folder of your
choice or use the default location.
16. Click the Finish button to complete the process.
Setup and Hold Procedure
This procedure verifies the setup and hold specification of the logic analyzer
module. This procedure can only be verified with the P686x probes. The
procedure requires several iterations of connecting and disconnecting probes to
the TLACAL2 test fixture.
Equipment Setups Using P686x Probes. It is assumed that the logic analyzer is
already connected to the TLACAL2 test fixture and that the performance
verification software is installed on the hard disk of the logic analyzer. It is also
assumed that the logic analyzer module is installed in the logic analyzer
mainframe. The following procedures describe the specific connections from the
logic analyzer module to the P686x probes and the TLACAL2 test fixture.
You must start the Performance Verification software in order for the electronic
equipment setup instructions to display. (At what point after the PV softwarebegins to run does the customer see the equipment setup instructions?) The
system will determine your hardware and adjust the equipment setup instructions
accordingly.
NOTE. Make sure that the alignment pin on the P6860 probe head is aligned with
the hole on the test fixture. Tighten the probe head screws by alternating between
them until they are finger tight (no more than 1 in-lbs of torque).
TLA7AXX Logic Analyzer Module Service Manual
4- 27
Performance Verification
4- 28
Figure 4- 6: P6864 Setup & Hold procedure connections
TLA7AXX Logic Analyzer Module Service Manual
Performance Verification
Start the Software. Complete the following steps to start the software and to run
the procedures:
1. Exit the TLA application on the logic analyzer.
2. Double-click the TLA7Axx Performance Verification icon on the desktop.
An application window similar to Figure 4--2 on page 4--5 appears.
3. If you have more than one logic analyzer module in your mainframe, select
the logic analyzer module from the list in the window.
4. Click the Verification button to start the software. A Verification dialog box
similar to Figure 4--4 on page 4--17 appears.
5. Verify that Setup and Hold is selected under Setup and Hold Procedures.
6. Clear all other procedures in the dialog box.
NOTE. The software will perform all selected procedures without interruption. To
limit the test to specific procedures, clear any procedures that you do not want to
run. If you want to run all of the selected procedures, you will need to play close
attention to the connection instructions as they are displayed on the screen.
7. Click the Next button at the bottom of the dialog box to begin the procedure.
A list of connection instructions displays for the procedure.
NOTE. Some of the connection information may vary depending on the configuration of your logic analyzer module. The connection information in the window
should track your logic analyzer module; the printed instructions in this section
may differ because they assume you are testing a 136-channel module.
8. Verify that your connections match those of the instructions. Then click the
Next button to begin the procedure.
The software will begin the procedures and display a list of results in the
window.
9. After the first set of procedures are done, click the Next button to display the
instructions for the next step. Move the probes on the test fixture as indicated
by the instructions.
10. After changing the connections, click the Next button to continue the
procedures.
11. Repeat steps 8 through 9 as indicated by the software.
TLA7AXX Logic Analyzer Module Service Manual
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Performance Verification
12. After the procedure finishes, click the Next button to open the Finish dialog
box where you can save the results to a file. Enter a file name and click the
Save button. You can use the Save dialog to save the file to a folder of your
choice or use the default location.
13. Click the Finish button to complete the process.
Logic Analyzer Module Certification
This section describes the procedures to certify the logic analyzer. You can
certify the logic analyzer without completing the main performance verification
procedures. Table 4--5 lists the certifiable parameters for the logic analyzer.
Table 4- 5: Logic analyzer certification test
Performance verification test nameSpecification tested
1. Thresholds
1
Certifiable parameter
1
Threshold accuracy
Equipment Setups
To certify the logic analyzer module, use the performance verification software
and click the Certification button. Perform the required procedure and then print
the results to obtain a copy of the software-generated calibration data report.
NOTE. The certification procedures have the same prerequisites as the performance verification procedures. Refer to Prerequisites on page 4--10 for a
detailed list of prerequisites.
These procedures require the same setups as described for the Performance
Verification procedures. It is assumed that the logic analyzer is already connected
to the TLACAL2 test fixture and that the performance verification software is
installed on the hard disk of the logic analyzer. It is also assumed that the logic
analyzer module is installed in the logic analyzer mainframe. The following
procedures describe the specific connections from the logic analyzer module to
the probes and the TLACAL2 test fixture.
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TLA7AXX Logic Analyzer Module Service Manual
Performance Verification
CAUTION. If you have any P6041cables connected from the logic analyzer to the
TLACAL2 test fixture, always disconnect one end of each P6041 cable before
powering down the test fixture.
Always power down the test fixture before connecting or disconnecting ribbon
cables. Failure to do so can damage the test fixture, the PIC, or the MICs.
However, there is no need to power down the test fixture if you are only
connecting probes, the P6041 cables, or the digital multimeter.
1. Connect a P6041 cable from each of the Analog Output BNC connectors to
the corresponding connector on the front of the test fixture (if necessary,
refer to the label on the test fixture for the connection locations).
2. Connect the multimeter leads to the DMM test points (J390) on the test
fixture. Connect the positive lead to the + connector and the negative
(ground) lead to the -- connector.
3. Connect a logic analyzer probe from the logic analyzer C0/C1/C2/C3 input
connector (or the C3/C2/A3/A2 connector if you have a 34- or 68-channel
module) to the appropriate connectors on the test fixture.
4. If you are using a P6810 probe:
a. Connect the lead sets to the P6810 GAIN & OFFSET Data connections
at J100, J101, J110, and J111 on the test fixture.
b. Connect the clock/qualifier leads to the SNGL square pins at J220. Make
sure that you connect the ground side or the “-- ” side to the square pins
with the GND label.
5. If you are using a P686x probe, connect the probe heads to the P6860/80
GAIN & OFFSET connections at J120 and J130 on the test fixture. If you
are using a P6880 probe, connect the probe heads to J120, J121, J130, and
J131 on the test fixture.
NOTE. Make sure that the alignment pin on the P686x probe head is aligned with
the hole on the test fixture. Tighten the probe head screws by alternating between
them until they are finger tight (no more than 1 in-lbs of torque).
6. Power on the test fixture, logic analyzer, and other test equipment. Allow all
test equipment to warm up for 30 minutes before continuing.
TLA7AXX Logic Analyzer Module Service Manual
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Performance Verification
Start the Software
Complete the following steps to start the software and to run the procedures:
1. Exit the TLA application on the logic analyzer.
2. Double-click the TLA7Axx Performance Verification icon on the desktop.
An application window similar to Figure 4--2 on page 4--5 appears.
3. If you have more than one logic analyzer module in your mainframe, select
the logic analyzer module from the list in the window.
4. Click the Certification button to start the software. A Certification dialog
box similar to Figure 4--7 appears.
5. Select the probe type near the bottom of the dialog box.
The Threshold Certification Procedure is selected by default.
6. Click the Next button at the bottom of the dialog box to begin the procedure.
A list of connection instructions displays for the procedure.
NOTE. Some of the connection information may vary depending on the configuration of your logic analyzer module. The connection information in the window
should track your logic analyzer module; the printed instructions in this section
may differ because they assume you are testing a 136-channel module.
7. Verify that your connections match those of the instructions. Then click the
Next button to begin the certification procedure.
The software will begin the procedures and display a list of results in the
window.
8. After the first set of procedures are done, click the Next button to display the
instructions for the next step. In most cases you only need to connect a
different probe to the test fixture.
9. After changing the connections, click the Next button to continue the tests.
10. Repeat steps 8 through 9 as indicated by the software.
11. After the procedure finishes, click the Next button to open the Finish dialog
box where you can save the results to a file. Enter a file name and click the
Save button. You can use the Save dialog to save the file to a folder of your
choice or use the default location.
12. Click the Finish button to complete the process.
13. Locate the file that you saved in step 11 and print the file for your records.
TLA7AXX Logic Analyzer Module Service Manual
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Performance Verification
CAUTION. Always disconnect one end of each P6041 cable before powering
down the TLACAL2 test fixture. Failure to do so can damage the test fixture.
14. Disconnect one end of each P6041 cable before powering down the
TLACAL2 test fixture.
15. Power down the TLACAL2 test fixture and then disconnect the remaining
test equipment.
This completes the certification procedures.
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TLA7AXX Logic Analyzer Module Service Manual
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