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3
Calibration Procedures
Test Considerations
To ensure proper instrument operation, verify that you have selected the correct
power line voltage prior to attempting any test procedure in this chapter. See
Prepare the Meter For Use"
For optimum performance, all test procedures should comply with the following
recommendations:
– Assure that the calibration ambient temperature is stable and between 18° C
– Assure ambient relative humidity is less than 80%.
– Allow a 3-hour warm-up period with the low thermal shorting plug connected
– Assure that low noise connections are made to the meter and calibrator.
– Allow 5 minutes for thermal offset stabilization after handling the input
– Ensure the input connector or low thermal shorting plug coupling nut is
78
and 28° C.
before verification or adjustment.
Chapter 7 of the Keysight 34420A User's Guide describes low noise input
connections.
connector or shorting plug before making measurements or performing
calibrations.
properly tightened (torque to 20 in-lb maximum).
on page 27 for more information.
Keysight 34420A Service Guide
"To
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