64 34980A Service Guide
3 Calibration Procedures
Gain Adjustment Procedure
Adjustment for each function should be performed only in the order
shown in the performance verification table. The performance verification
tables used for gain adjustments start on page 55.
Review the “DMM Test Considerations" on page 53 and “Gain Adjustment
Considerations" on page 61 sections before beginning this test.
Configuration: DC functions — 6½ digits
AC functions — LF 3 HZ:SLOW
1 Configure each function and range shown in the gain verification tables
(starting on page 55).
2 Apply the input signal shown in the “Input” column of the appropriate
verification table.
.
3 Send the actual input value to the instrument using the
CALibration:VALue <value> command.
4 Calibrate the instrument using the CALibration? command.
5 Perform the appropriate Gain Verification Test to check the calibration
results.
6 Repeat steps 1 through 5 for each gain verification test point shown in
the tables.
Always complete tests in the same order as shown in the appropriate
verification table.
Each range in the gain adjustment procedure takes less than 20 seconds
to complete.
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