Keysight U1251B Guia Del Usuario página 168

6 Performance Tests and Calibration
Adjustments Consideration
You will need a test input cable, a connectors set, and a Shorting Plug to adjust
the instrument.
After each adjustment, the secondary display briefly shows PASS. If the
NOTE
calibration fails, the handheld multimeter sounds a beep, and an error number is
shown in the secondary display. Calibration error messages are described on
page
the procedure.
Adjustments for each function should be performed only in the order shown
below.
1 Allow the instrument to warm up and stabilize for 5 minutes before performing
2 Ensure that during the adjustments, the low battery indicator does not appear.
3 Consider the thermal effects as you are connecting test leads to the calibrator
4 During ambient temperature adjustment, be sure to turn on the instrument for
Never turn off the instrument during an adjustment. This may delete the
CAUTION
calibration memory for the present function.
166
176. In the event of a calibration failure, correct the problem and repeat
the adjustments.
Replace the batteries as soon as possible to avoid false reading.
and handheld multimeter. It is recommended to wait for one minute before you
begin the calibration after connecting the test leads.
at least 1 hour with the K-type thermocouple connected between the
instrument and the calibration source.
Keysight U1251B and U1252B User's and Service Guide