92 34410A/11A/L4411A Service Guide
3 Calibration Procedures
Frequency Gain Calibration Procedure
Review the “Test Considerations” on page 63 and “Gain Adjustment
Considerations” on page 82 sections before beginning this procedure.
Configuration: Frequency 10 V range
The frequency accuracy of the Fluke 5720A is insufficient to calibrate the
DMM. Its frequency output needs to be calibrated against a more accurate
reference. The Agilent 33220A is recommended for this adjustment.
1 Configure the function and range shown in the adjustment table below.
2 Apply the input signal shown in the “Input” column of the table.
3 Enter the actual applied input frequency (see “Entering Adjustment
Values” on page 78).
a Successful completion of each adjustment value is indicated by the
message CAL SUCCEEDED flashing in the display.
b If a problem is encountered, the display will flash the message
CAL FAILED. Check the input value, range, function, and entered
adjustment value to correct the problem and repeat the adjustment
step.
4 Store the new calibration constants (“Storing the Calibration Constants” on
page 78.
5 Verify the Frequency Gain adjustments using the verification procedures
beginning on page 69.
Frequency adjustment procedure takes less than 2 seconds to complete.
Input Instrument
Vrms Frequency Range
7 V 10 kHz 10 V
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