82 34410A/11A/L4411A Service Guide
3 Calibration Procedures
Gain Adjustments
The instrument calculates and stores gain corrections for each input value.
The gain constant is computed from the calibration value entered for the
calibration command and from measurements made automatically during
the adjustment procedure.
Most measuring functions and ranges have gain adjustment procedures.
The 100 MΩ and 1 GΩ ranges do not have gain calibration procedures.
Adjustments for each function should be performed ONLY in the order
shown.
Gain Adjustment Considerations
• The ADC and zero adjustment procedure must have been recently
performed prior to beginning any gain adjustment procedures.
• Gain adjustments for the 34410A/11A can be made using either the
front or rear input terminals. Make sure the Front/Rear input selection
switch matches the terminals in use.
Never turn off the instrument during a Gain Adjustment. This may cause calibration
memory for the present function to be lost.
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