Performance Tests and Calibration
5
Keysight U1241B and U1242B User’s and Service Guide
73
Adjustment Considerations
1
Allow the multimeter to warm up and stabilize for five minutes before
performing the adjustments.
2
Assure that the low battery indicator does not appear during the adjustment.
Replace the batteries to avoid inaccurate readings.
3
Consider the thermal effects of the test leads connected to the calibrator and
multimeter. It is recommended to wait for one minute before start performing
the calibration.
4
During ambient temperature adjustment, ensure that the multimeter has been
turned on for at least one hour with K-type thermocouple connected between
the multimeter and calibration source.
NOTE
After each adjustment, the secondary display shows
PAS
. If the calibration fails,
the multimeter beeps, and an error number is shown in the secondary display.
Calibration error messages are described in
Calibration Errors
.
CAUTION
Do not turn off the multimeter during adjustments., as this may delete the
calibration memory for the present function.