Tektronix TAS 475 Service Manual

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Adjustment
Table of Contents
Verify the Time Base .................................. .
Verify the Trigger System .............................. .
Temperature Compensation Calibrations ................. .
Horizontal Sweep Path ................................ .
Vertical Signal Path ................................... .
4-7
4-8
4-9
4-9
4-12
Performance Tests. .. .. ... ...... . .... ..... . . . . . . .... . ... ... .. 4-13
Performance
Tests Prerequisites................ .. . .. .. . .. 4-13
Equipment Required
..................................... 4-13
Vertical System Checks .................................. 4-15
Check DC Gain and Voltage Measurement Accuracy ...... 4-15
Check Trigger
Level Accuracy .......................... 4-16
Check DC
Coupling Bandwidth ......................... 4-17
Check X-Axis Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Horizontal System Checks................................ 4-19
Check Time Base and Time Cursor Accuracy ............. 4-19
Check
Dual Delay Accuracy ............................ 4-23
Trigger System Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Check Trigger Sensitivity .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Adjustment Procedures ..................................... .
Requirements for Performance
.......................... .
Personnel ........................................... .
Access
to Adjustments ................................ .
Warm-Up Period
..................................... .
Equipment Required .................................... .
Performing the Adjustment Procedures .
.................. .
Complete Adjustment ................................. .
Partial Adjustment .................................... .
Adjustment Dependencies
............................ .
5-1
5-1
5-1
5-1
5-1
5-2
5-2
5-3
5-3
5-3
Adjustment Instructions. .... . .... .. ... ......... . .. ..... .. 5-4
CRT Adjustments ..................................... 5-4
Low Frequency
Output Compensation ................... 5-5
Factory
Horizontal Cal ................................. 5-7
Factory
Vertical Cal .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 0
High Frequency Step Response. . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Attenuator Compensation
.............................. 5-14
Vertical Gain Adjust (Cabinet On) . . . . . . . . . . . . . . . . . . . . . . . . 5-16
TAS 475 and TAS 485 Service Manual
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Tektronix TAS 475 Specifications

General

Brand	Tektronix
Model	TAS 475
Category	Test Equipment
Language	English