TDS 420A, TDS 430A & TDS 460A Service Manual
5-1
Adjustment Procedures
This chapter contains information needed to adjust the TDS 420A, TDS 430A,
and TDS 460A Digitizing Oscilloscopes.
The Adjustment Procedures are divided into three parts:
H This general information about adjusting this oscilloscope and the written
procedures for installing and using the adjustment software.
H The TDS 420A, T DS 430A, & TDS 460A Adjustment Software included w ith
this manual. Read the material in this section before using the
adjustment software.
H Two written procedures for manually adjusting the probe and the monitor
assembly.
Use this procedure to return the oscilloscope to conformance with its Warranted
Characteristics (they are listed starting on page 1--15). You can also use this
procedure to optimize the performance of the oscilloscope.
This procedure is not required to verify the oscilloscope conforms with its
warranted characteristics; performance verification procedures are found in the
Performance Verification, starting on page NO TAG.
As a general rule, these adjustments should be done every 2,000 hours of
operation or once a year if used infrequently.
Requirements for Performance
Before you do this procedure, you need to address the following requirements.
Only trained service technicians should perform these procedures.
This oscilloscope requires a 20 minute warm-up period in a 20_ Cto30_ C
environment before it is adjusted. Adjustments done before the operating
temperature has stabilized may cause errors in performance.
Except when adjusting the monitor assembly, the cabinet is not removed. (A
monitor adjustment is not done as part of a routine adjustment — see Complete
Adjustment on page 5--2.)
Description
Purpose
Adjustment Interval
Personnel
Warm-up Period
Access
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