Bench Test Instruments and Handheld Oscilloscopes Basic Service
21
TAS 200 Series Adjustment Procedures
This section contains procedures to adjust TAS 220 and TAS 250 oscilloscopes.
If your instrument fails a performance requirement, use these procedures to
return it to factory specifications.
In this section you will find the following information:
H A list of adjustments
H A list of test equipment needed to make the adjustments
H Instructions on how to prepare instruments for adjustment
H Step-by-step adjustment procedures
The procedures in this section do not verify performance. To confirm that your
oscilloscope meets factory specifications, implement the procedures in the
TAS 200 Series Performance Verification section.
List of Adjustments
Use the adjustments listed in Table 18 to return TAS 220 and TAS 250 oscillo-
scopes to factory calibration.
Table 18: TAS 220 and TAS 250 adjustments
Power Supply Adjustment s
+12 V Supply
Intensity
Focus and Astigmatism
Vertical Adjustments
DC Balance
Variable DC Balance
Channel 2 Inverted Balance and Position Center
ADD Mode Balance
Vertical Gain
MAG Sensitivity
High Frequency Compensation
Attenuator Compensation
Channel 1 Output DC Offset
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