Performance Verification And Adjustment Procedures; Required Test Equipment - Tektronix TSG 95 Service Manual

Performance Verification and Adjustment Procedures

Required Test Equipment

TSG 95 Service Manual
This section consists of a detailed performance verification procedure to verify
the operation of the TSG 95, and an adjustment procedure to return the instru-
ment to in-spec operation.
The order of these procedures has been chosen to minimize changes in equip-
ment setup. Performance parameters may be checked in any order. As some of
the calibration steps are interactive, care must be taken when adjusting individual
parameters to ensure that all others remain within specification.
A performance verification checklist begins on page 4–3.
Performance verification procedure instructions begin on page 4–4.
An adjustment checklist appears on page 4–22.
Adjustment instructions begin on page 4–24.
The following list of equipment represents the minimum required for the Perfor-
mance Verification and Adjustment procedures. While alternate equipment may
be used, it is not recommended. Alternate equipment must meet the minimum
specifications for the listed equipment. Use of inadequate equipment may result
in faulty measurements or calibration.
Table 4–1: Required Test Equipment
Item
PAL/NTSC Video Measure-
ment Set
Audio Measurement Set
Frequency Counter
PAL or NTSC Video Signal
Generator
Information/Requirements
For measuring and displaying
line and field-rate waveforms.
Must be capable of making
differential phase and gain
measurements.
Must be capable of measuring
Total Harmonic Distortion.
Must be accurate to within
2.5 Hz out of 5 MHz.
Must be capable of being gen-
locked to the TSG 95 Video
output, and must have a Sub-
carrier output.
Example
Tektronix VM700A Video Mea-
surement Set, Option 01/11.
Tektronix VM700A with Audio
Option 40.
Tektronix DC503A; plugs into
a TM503 power mainframe.
Tektronix TSG-170A (NTSC),
Tektronix TSG-271 (PAL).
4–1