Performance Tests and Calibration 7
Agilent U1251A/U1252A User’s and Service Guide 153
Finishing the Adjustment
1 Remove all the shorting plugs and connectors from the
instrument.
2 Record the new Calibration Count.
3 Press and simultaneously to exit the
Adjustment Mode. Power off and on again. The instrument
will then be secured.
To Read the Calibration Count
You can query the instrument to determine how many
calibrations have been performed.
When you receive your instrument, read the count to
determine its initial value.
The count value increases by one for each calibration point,
and a complete calibration will increase the value by many
counts. The calibration count increments up to a maximum
of 65535 after which it is set at 0. The calibration count
can be read from the front panel after the instrument has
been unsecured. Use the following procedure to read the
calibration count from the front panel.
1 Press Adjustment Mode. The primary display
shows the calibration count.
2 Take note of the count.
3 Press again to exit the calibration count mode.
Your instrument was calibrated before it left the factory.
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