Adjustment Considerations - Agilent Technologies U1401A User's Manual And Service Manual

7 Performance Tests and Calibration

Adjustment Considerations

C A U T I O N
138
To adjust (calibrate) the instrument, you will need a set of
test input cables and connectors for receiving the reference
signals. You will also need a shorting plug.
Adjustments for each function should be performed with the
following considerations (where applicable):
• Allow the instrument to warm up and stabilize for five
minutes before performing the adjustments.
• Make sure that the batteries will not run low during the
adjustments. Replace or recharge the batteries before
making adjustments to avoid false reading.
• Consider the thermal effects as you connect the test leads
between the calibrator and this instrument. It is
recommended that you wait for one minute after
connecting the test leads before you begin the calibration.
• During ambient temperature adjustment, ensure that the
instrument has been turned on for at least one hour with
a K- type thermocouple connected between the instrument
and the calibration source.
Do not turn off the instrument during calibration. This may delete the
calibration memory for the present function.
U1401A User's and Service Guide