Instructions
DAS
9200 Series & TLA 500 Series
Certification Procedures
070-9470-98
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.
Copyright T ektronix, Inc. All rights reserved. Licensed software products are owned by Tektronix or its suppliers and
are protected by United States copyright laws and international treaty provisions.
Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the
Rights in T echnical Data and Computer Software clause at DFARS 252.227-7013, or subparagraphs (c)(1) and (2) of the
Commercial Computer Software – Restricted Rights clause at F AR 52.227-19, as applicable.
T ektronix 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.
Printed in the U.S.A.
T ektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000
TEKTRONIX, TEK, and DAS are registered trademarks of T ektronix, Inc.
Table of Contents
General Safety Summary v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Safety Summary ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface xi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Products Certified 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedure Overview 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Information and Conventions 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equipment Required 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T est Conditions 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedure 1: DAS 9219/9220 Mainframes 9. . . . . . . . . . . . . . . . . . . . . .
Time Base Accuracy 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedure 2: DAS 9221 and TLA 510/TLA 520 Mainframes 13. . . . . . .
Time Base Accuracy 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedure 3: 92E9 Expansion Mainframe 17. . . . . . . . . . . . . . . . . . . . . .
Time Delay Accuracy 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedure 4: 92A16 Acquisition Board and 92A16E Expansion
Board 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Time Base Accuracy 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Threshold Accuracy 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedure 5: 92A96/92C96 Acquisition Board 33. . . . . . . . . . . . . . . . . . .
Threshold Accuracy 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedure 6: 92HS8 Interface Board and Probe Cabinets 39. . . . . . . . .
Calibrator Accuracy: Probe Cabinet 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Time Base Accuracy: Probe Cabinet 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Time Base Accuracy: Master Interface Board 43. . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Threshold Accuracy: Probe Cabinet 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedure 7: 92S16/92SX109 Pattern Generator Board 55. . . . . . . . . . .
Pod Clock Maximum Skew 55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Threshold Accuracy 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Procedure 8: 92S32/92SX118 Pattern Generator Board 63. . . . . . . . . . .
Pod Clock Maximum Skew 63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix A: 92A96 Acquisition Fixture 71. . . . . . . . . . . . . . . . . . . . . . . .
Material Required 71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Build Procedure 71. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix B: Threshold Fixture 73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Material Required 73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Build Procedure 73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
i
Table of Contents
List of Figures
Figure 1: Certification Procedure Tasks 4. . . . . . . . . . . . . . . . . . . . . . . .
Figure 2: Controller Board 100 MHz Time Base Clock Test Point
Locations (DAS 9219/9220 Mainframes) 10. . . . . . . . . . . . . . . . . . . .
Figure 3: Controller Board 100 MHz Time Base Clock Test Point
Location (DAS 9221/TLA Mainframes) 14. . . . . . . . . . . . . . . . . . . . .
Figure 4: DAS 92E9 Expansion Slave Board Test Point Locations 19. .
Figure 5: 92A16 Test Point Locations (back of board) 24. . . . . . . . . . . .
Figure 6: Data and Clock Threshold Test Point Locations 34. . . . . . . . .
Figure 7: 92HS8 Memory Board Test Point Locations
(back of board) 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 8: 92HS8 Probe Cabinet Data Threshold Accuracy
Equipment Setup 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 9: 92S16 Test Point Locations 57. . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10: 92S32 Test Point Locations 65. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 11: 92A96 Acquisition Fixture Construction 72. . . . . . . . . . . . . .
Figure 12: Threshold Fixture 74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
For Tektronix Use Only
ii
DAS 9200 Series & TLA 500 Series Certification Procedures
List of Tables
Table of Contents
Table 1: Products Certified 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 2: Products Not Certified 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3: Required Test Equipment 6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4: Pod Clock Output Skew (Not Edge Positioned),
Steps 6 and 7 66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 5: Pod Clock Output Skew (Edge Positioned),
Steps 14 and 15 67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
iii
Table of Contents
For Tektronix Use Only
iv
DAS 9200 Series & TLA 500 Series Certification Procedures
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it.
Only qualified personnel should perform service procedures.
Injury Precautions
Use Proper Power Cord
Ground the Product
Do Not Operate Without
Covers
Use Proper Fuse
Do Not Operate in
Wet/Damp Conditions
Do Not Operate in an
Explosive Atmosphere
Avoid Exposed Circuitry
To avoid fire hazard, use only the power cord specified for this product.
This product 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
product, ensure that the product is properly grounded.
To avoid electric shock or fire hazard, do not operate this product with covers or
panels removed.
To avoid fire hazard, use only the fuse type and rating specified for this product.
To avoid electric shock, do not operate this product in wet or damp conditions.
To avoid injury or fire hazard, do not operate this product in an explosive
atmosphere.
To avoid injury, remove jewelry such as rings, watches, and other metallic
objects. Do not touch exposed connections and components when power is
present.
Product Damage Precautions
Use Proper Power Source
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
Do not operate this product from a power source that applies more than the
voltage specified.
v
General Safety Summary
Use Proper Voltage
Setting
Provide Proper Ventilation
Do Not Operate With
Suspected Failures
Before applying power, ensure that the line selector is in the proper position for
the power source being used.
To prevent product overheating, provide proper ventilation.
If you suspect there is damage to this product, have it inspected by qualified
service personnel.
Safety Terms and Symbols
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
Symbols on the Product
vi
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.
The following symbols may appear on the product:
DANGER
High Voltage
Protective Ground
(Earth) T erminal
ATTENTION
Refer to Manual
Double
Insulated
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
Certifications and Compliances
General Safety Summary
CSA Certified Power
Cords
Compliances
Overvoltage Category
CSA Certification includes the products and power cords appropriate for use in
the North America power network. All other power cords supplied are approved
for the country of use.
Consult the product specifications for Overvoltage Category and Safety Class.
Overvoltage categories are defined as follows:
CAT III: Distribution level mains, fixed installation
CAT II: Local level mains, appliances, portable equipment
CAT I: Signal level, special equipment or parts of equipment, telecommunica-
tion, electronics
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
vii
General Safety Summary
viii
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
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
Disconnect Power
Use Caution When
Servicing the CRT
Use Care When Servicing
With Power On
Do not perform internal service or adjustments of this product unless another
person capable of rendering first aid and resuscitation is present.
To avoid electric shock, disconnect the main power by means of the power cord
or, if provided, the power switch.
To avoid electric shock or injury, use extreme caution when handling the CRT.
Only qualified personnel familiar with CRT servicing procedures and precautions
should remove or install the CRT.
CRTs retain hazardous voltages for long periods of time after power is turned off.
Before attempting any servicing, discharge the CRT by shorting the anode to
chassis ground. When discharging the CRT, connect the discharge path to ground
and then the anode. Rough handling may cause the CRT to implode. Do not nick
or scratch the glass or subject it to undue pressure when removing or installing it.
When handling the CRT, wear safety goggles and heavy gloves for protection.
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.
X-Radiation
To avoid x-radiation exposure, do not modify or otherwise alter the high-voltage
circuitry or the CRT enclosure. X-ray emissions generated within this product
have been sufficiently shielded.
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
ix
Service Safety Summary
For Tektronix Use Only
x
DAS 9200 Series & TLA 500 Series Certification Procedures
Preface
This document describes the procedures required to certify the DAS 9200 Series
and TLA 500 Series logic analyzers and their associated modules.
This document is intended for Tektronix service personnel only. It assumes that
the reader is a trained technician, familiar with DAS 9200 Series and
TLA 500 Series logic analyzers.
For additional information, refer to the following documents:
H The DAS Technician’s Reference Manual 070-5959-XX
H The DAS Verification and Adjustment Procedures Manual 070-5961-XX
H The TLA 510/520 Service Manual 070-8976-XX
H The 92A96XX Service Manual 070-8247-XX
H The 92HS8 User Manual 070-5951-XX
H The DAS 9200 Systems/TLA 500 Systems Functional Verification Procedure
DAS9200-AA
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
xi
Preface
xii
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
Introduction
The purpose of these certification procedures is to enable the Tektronix Field
Service organization to satisfy customer requests for traceable certification of the
DAS 9200 and TLA 500 systems. (Often, the customer requires equipment
certification to achieve or maintain ISO compliance.)
NOTE. These procedures are not intended for customer availability.
These procedures provide Tektronix Field Service Technicians with a standardized and documented procedure for traceable certification of DAS 9200 and
TLA 500 Systems to national standards. After performing this procedure, the
technician can generate and provide the customer with a Certificate of Traceable
Calibration and, if required, a Certification Test Record. The technician can then
apply appropriate calibration stickers to the mainframe and modules which make
up the system. This provides the customer with documentation and confidence in
the measurement accuracy of their system.
This procedure does not verify the system to published specifications. It should
generally be used in conjunction with the DAS 9200/TLA 500 Functional
Verification Procedure. These Certification Procedures certify the accuracy of the
primary references or adjustments; the Functional Verification Procedure verifies
the functionality of the mainframe, module, and probes. Although not required
for traceable certification, if full verification of published specifications is
specially requested by the customer, refer to the Performance Verification
Procedures in the appropriate DAS 9200/TLA 500 Service Manuals.
This procedure is intended for use by Tektronix Field Service Technicians who
have completed DAS9200 Service Training. Others with less training may need
access to other reference documents, such as mainframe and module user
manuals, for detailed information. (Refer to page xi for a partial list of related
documents.)
Please check the Required Test Equipment table on page 6 to ensure you have
the proper traceable test equipment, fixtures, tools, and materials, before
beginning the procedures.
CAUTION. Check with the customer before disconnecting probes or cables from
the system under test. It is desirable to use the customer’s probes and cables
when called for, but in some cases this may not be possible.
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
1
Introduction
Products Certified
Table 1 lists the modules which can be certified, and the order in which they
must be tested. Table 2 lists the modules which have no certifiable references.
These procedures support Tektronix-recommended product configurations only.
The recommended recertification interval for DAS 9200 and TLA 500 products
is one year.
T able 1: Products Certified
Product Parameter Comments
1 DAS 9219/9220
Mainframe
Time Base Accuracy:
100 MHz (Main)
Measured on Controller board
2 DAS 9221/TLA
5XX Mainframe
3 92E9 Expansion
Mainframe
4 92A16/92A16E
board
5 92A96/C96
board
6 92HS8 Master
Interface board
and Probe Cabinets
7 92S16/92SX109
board
8 92S32/92SX118
board
Time Base Accuracy:
100 MHz (Main)
Time Delay Accuracy Measured on Expansion Slave
Threshold Accuracy
Time Base Accuracy (92A16 only):
200 MHz Clock
Threshold Accuracy
Time Base Accuracy:
500 MHz Clock
200 MHz Clock
Threshold Accuracy
Calibrator Accuracy
Pod Clock Outputs
Threshold Accuracy (External
Control Probe Input)
Pod Clock Outputs 92SX118 same as 92S32 without
Measured on Controller board
board
Time base accuracy measured on
Memory board inside Probe
Cabinet.
Threshold Accuracy procedures
consist of checking one setting for
each DAC on one channel only.
92SX109 same as 92S16 without
multiplexer.
multiplexer.
For Tektronix Use Only
2
DAS 9200 Series & TLA 500 Series Certification Procedures
T able 2: Products Not Certified
Product Comments
92A60 Controller board No certifiable references or adjustments
92A60 Memory board I
92A60D Memory board I
92A90 Controller board I
92A90 Memory board I
92A90D Memory board I
92A60/90 Buffer probe I
92HS8E Expansion board I
Acquisition probes I
Pattern Generator probes I
92LAN board I
92LANSE board I
Introduction
Procedure Overview
92C01/2/3 board I
Figure 1 shows the general order of tasks that you will need to perform for
certification.
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
3
Introduction
Determine modules
customer wants to certify
Go to appropriate
procedure(s)
Is it OK
with customer to remove/
reconnect probes
from SUT?
Yes
Select procedure
Prepare equipment
for testing
Perform procedure
Gather required test equipment
Use Tektronix-supplied
No
Configure customer’s
mainframe and modules
as described in procedure
probes, if available
Set up test
equipment
Photocopy/print required
Test Records
Allow all mainframes,
modules and equipment
to warm up (20 minutes)
Enter traceable test equipment and
DAS/TLA product models and
serial numbers on appropriate
Certificates and Test Records
Enter measurements on the
appropriate Test Records
Are
measurements within
tolerance?
Yes
Are
all certifications
complete?
No
No
Yes
Figure 1: Certification Procedure Tasks
4
Repair or adjust
equipment as required
Done
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
General Information and Conventions
The following general information and conventions apply throughout this
section:
H Each test procedure begins with a table, similar to the one below, that
provides information you need to know before starting the test.
Introduction
Equipment Required
Configuration Mainframe, configured as follows:
Prerequisites Warm-up time: 20 minutes, DAS and test equipment
The item numbers after each piece of equipment refer to line numbers in
Table 3, Required Test Equipment, which begins on page 6.
H The Test Record starts with header information that must always be filled out
completely. The Certificate Number is the number of the actual Certificate of
Traceable Calibration that you’ll complete.
H Always fill out the Incoming Data entry on the Test Record. The Outgoing
Data entry is required only if you perform a repair or adjustment to the
module such that the certification tests must be performed again.
Universal Counter/Timer with Probe (item 1)
Dual Lead Adapter (item 7)
Gold Square Pin (item 9)
Top cover removed
Memory board removed; other boards may be installed
Power-up diagnostics pass.
No previous tests required.
Equipment Required
These procedures require the use of traceable signal sources and measurement
instruments to ensure accuracy. Table 3 lists the equipment required for the
procedures.
You can obtain an accuracy ratio of 4:1 or better by using the recommended
equipment listed in the Examples column of Table 3. If your test equipment does
not meet the minimum requirements listed in the table, your test results may be
invalid.
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
5
Introduction
Table 3: Required Test Equipment
Item Number and Description Minimum Requirements Examples Where Used
1 Universal Counter/Timer
with Probe
1
2 Oscilloscope with two
1,3
Probes
3 Digital Multimeter (DMM) 4.5 digit; 0 V ± 0.5 mV;
200 MHz frequency
measurement capability;
20 ppm time base accuracy
@25 MHz to 200 MHz;
10 Hz resolution
350 MHz bandwidth;
2 ns/div;
delta time = 14.2 ns ±0.9%
(±125 ps)
±1.6 V ± 3 mV (0.19%)
Tektronix DC 5010 Digital
Counter/Timer with P6125 5X Probe
1,2
P6137 10X Probe
(with TM 5000
mainframe) or
T ektronix CMC251
Tektronix 2465B with P6137 probes or
Tektronix TDS 520A with P6139A
probes
Tektronix DMM 2524, DMM 2544,
DM2510, DM2510G or
Procedure 1, 2, 4, 6
or
Procedure 3, 7, 8
Procedure 4, 5, 7
Fluke 884X or 850X series
4 DC Voltage Calibrator 0 V ± 5 mV,
0 V ± 30 mV with <5 mV
adjustment resolution
5 92A96 Acquisition Fixture N/A Refer to Appendix A on page 71 for
Fluke 34X series, Fluke 5100 series,
Fluke 5500A or
Wavetek 9100
Procedure 6
Procedure 6
parts list and build procedure.
6 Threshold Fixture N/A Refer to Appendix B, on page 73 for
Procedure 7
parts list and build procedure.
7 Dual-Lead Adapter Two required Tektronix PN 015-0325-00 Procedure 1, 2, 3, 6, 7, 8
8 Subminiature-to-Miniature
Probe Adapter
Two required Tektronix PN 013-0202-02 Procedure 3, 7, 8
Adapts the oscilloscope
probe to the dual-lead
adapter
9 Gold Square Pin Single gold square pin Part of 131-1634-00, or equivalent Procedure 2, 6
10 Spring-Tip Ground
Spring-tip ground for probe Tektronix PN 214-4125-00 Procedure 4
Connector
11 DIP Clip 16 pin Procedure 1
12 DIP Clip 20 pin, narrow, modified for
Procedure 3
two oscilloscope connections on pin 18
5
13 BNC Cable 36 in; two required Tektronix PN 012-1341-00 Procedure 6
14 Dual Banana-to-BNC
Two required Tektronix PN 103-0090-00 Procedure 6
Connector
For Tektronix Use Only
6
DAS 9200 Series & TLA 500 Series Certification Procedures
T able 3: Required Test Equipment (Cont.)
Item Number and Description Where UsedExamplesMinimum Requirements
Introduction
15 Ground Strap T ektronix PN 196-3353-XX (standard
with the 92A96/92C96 Module)
1
Probes must be compensated. Refer to the oscilloscope or counter/timer manual for the correct probe compensation
procedure.
2
The P6125 probe is a 5X probe. If you use a 10X probe, you must adjust threshold voltages accordingly.
3
For procedures requiring delta time measurements, you must compensate for oscilloscope channel-to-channel skew.
4
The handheld DMMs (DMM 252 and DMM 254) provide a 3:1 test accuracy ratio at 1.6 V (4 V full-scale range).
5
Modify the DIP clip by soldering a second pin in parallel with pin 18.
Procedure 6
Test Conditions
The certification procedures must be performed in an environment that is within
the instrument’s normal electrical and environmental operating parameters,
following a minimum 20-minute warm-up period.
These procedures support Tektronix-recommended product configurations only.
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
7
Introduction
For Tektronix Use Only
8
DAS 9200 Series & TLA 500 Series Certification Procedures
Procedure 1: DAS 9219/9220 Mainframes
This procedure verifies the accuracy of the 100 MHz Time Base Clock on the
Controller board.
Time Base Accuracy
Test Equipment Setup
Equipment
Required
Configuration Mainframe, configured as follows:
Prerequisites All power-up diagnostics pass (before removing Memory board)
6
Before removing the Memory board, verify that the power-up diagnostics pass.
Universal counter/timer with probe (item 1)
Dual lead adapter (item 7)
16-pin DIP clip (item 11)
Top cover and card cage door removed
6
Memory board removed
Warm-up time: 20 minutes (test equipment and DAS/TLA mainframe)
Counter/timer probe compensated
No previous procedures required
; all instrument modules removed
Set up the test equipment as follows:
Counter/Timer with
5X Probe
Channel A:
MODE FREQ A
TERM 1 M
SLOPE +
ATTN X1
COUPL DC
CH A LEVEL +0.740 V
AVGS –1
7
Value shown is for a 5X probe. For a 10X probe, value should be 0.372 V.
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
7
9
Procedure 1: DAS 9219/9220 Mainframes
100 MHz
Time Base Clock
Procedure
1. Connect the counter/timer probe GND to U121 pin 8 on the Controller
board. (See Figure 2.)
2. Connect the counter/timer probe input to U121 pin 14 and record the
measured frequency on the Test Record. Verify that the value is within the
allowable range.
1
Signal (white)
Front of mainframe
GND (black)
U121
8
14
10
Figure 2: Controller Board 100 MHz Time Base Clock Test Point Locations
(DAS 9219/9220 Mainframes)
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
Certification Test Record
DAS 9219/9220 Mainframe
Instrument Model:
Serial Number: Certificate Number:
Verification Performed by: Verification Date:
Time Base Accuracy Test Data
Procedure
Characteristic Specification Tolerance
Reference
Incoming Data Outgoing Data
100 MHz Main Clock 100 MHz ± 0.01% 99.99 MHz to
100.01 MHz
Page 10,
Step 2
DAS 9200 Series & TLA 500 Series Certification Procedures
Procedure 2: DAS 9221 and TLA 510/TLA 520 Mainframes
This procedure verifies the accuracy of the 100 MHz Time Base Clock on the
Controller board.
Time Base Accuracy
Test Equipment Setup
Equipment
Required
Configuration Mainframe, configured as follows:
Prerequisites Warm-up time: 20 minutes (test equipment and DAS/TLA mainframe)
Universal counter/timer with probe (item 1)
Dual lead adapter (item 7)
Gold square pin (item 9)
Top cover and card cage door removed
All instrument modules removed
Counter/timer probe compensated
No previous procedures required
All power-up diagnostics pass
Set up the test equipment as follows:
Counter/Timer with
5X Probe
Channel A:
MODE FREQ A
TERM 1 M
SLOPE +
ATTN X1
COUPL DC
CH A LEVEL +0.740 V
AVGS –1
8
Value shown is for a 5X probe. For a 10X probe, value should be 0.372 V.
For Tektronix Use Only
DAS 9200 Series & TLA 500 Series Certification Procedures
8
13
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