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6
Performance Tests and Calibration
Adjustment Considerations
N O T E
C A U T I O N
154
To adjust the instrument, you will need a test input cables
and connectors set for receiving the reference signals (for
example, from the Fluke 5520A calibrator or Agilent 33250A
function/arbitrary waveform generator) and a shorting plug.
Please refer to
"Input Connections"
After each successful adjustment, the secondary display briefly shows
"PASS". If the calibration fails, the instrument emits a beep, and an error
code is shown momentarily on the secondary display. For a list of
calibration error codes, refer to
the event of a calibration failure, correct the problem and repeat the
procedure.
Adjustments for each function should be performed with the
following considerations (where applicable):
1 Allow the instrument to warm up and stabilize for 5
minutes before performing the adjustments.
2 Ensure that during the adjustment, the low- battery
indicator does not appear. Replace/recharge the battery as
soon as possible to avoid false reading.
3 Consider thermal effects as you connect test leads to the
calibrator and this instrument. It is recommended that
you wait for 1 minute after connecting the test leads
before you begin the calibration.
4 During ambient temperature adjustment, ensure that the
instrument has been turned on for at least 1 hour with
the K- type thermocouple connected between the
instrument and the calibration source.
Never turn off the instrument during calibration. This may delete the
calibration memory for the present function.
on page 139.
"Calibration error codes"
U1253A User's and Service Guide
on page 168. In
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