•
•
•
Requirements for
Performance
Adjustment Procedures
This section contains information needed to adjust the
TAS
475 and
TAS
485 Analog Oscilloscopes.
Description - The Adjustment Procedures are divided into two parts:
• General information about adjusting the oscilloscope
•
Written procedures for oscilloscope calibration
Purpose - Use this procedure to return the oscilloscope to conformance
with its
Warranted Characteristics
as
listed in Section
1,
Specifications. It
also
optimizes 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
Section
4,
Performance Verification.
Adjustment Interval - As a general rule, perform these adjustments after
every
2,000 hours
of
operation or once a year if used infrequently .
Before you perform this procedure, you need to address the
following
requirements.
Personnel
This procedure
is
only to be performed by trained service technicians.
Access to Adjustments
The cabinet must be removed to perform the adjustment procedure. Refer to
Section
6,
Maintenance, for procedures to remove the cabinet. The adjust-
ment procedures make references to adjustments
located on internal circuit
boards. Figure
5-1
shows the location of each board with adjustments. The
end
of
this section contains figures that show the location of each adjust-
ment for each circuit board.
Warm-Up Period
This oscilloscope requires a 20 minute warm-up period
in
a 20° C to 30° C
environment before performing this adjustment procedure. Adjustments
performed before the operating temperature has stabilized may cause errors
in
performance .
TAS 475 and TAS 485 Service Manual
5-1
To Next Page
Loading...
