Calibration
30 Keysight M9181A Calibration and Verification Procedure
Time Required for Calibration
The instrument can be automatically calibrated under computer control. With
computer control you can perform the complete calibration procedure and
performance verification tests in approximately 60 minutes once the instrument is
warmed up (see “Test Considerations” on page 16).
Automating Calibration Procedures
These adjustment procedures demonstrate adjustment through the Soft Front
Panel. You can automate the complete verification and adjustment procedures
outlined in this manual by programming instrument configurations and tests over
the remote interface. You can then read back verification data and compare the
results to the appropriate test limit values.
Calibration Message and Calibration Count
The instrument allows you to store a message in calibration memory. For example,
you can store information such as the date the last calibration was performed, the
date the next calibration is due, the instrument’s serial number, or even the name
and phone number of the person to contact for calibration. The calibration
message may contain up to 40 characters.
You can record a calibration message only when the instrument is unsecured. You
can read the calibration message whether the instrument is secured or unsecured.
You can read the calibration message from the Tools menu of the SFP. If the DMM
is unsecured, you can enter a new calibration message in the Calibration Message
box.
To do this remotely, use the AGM918X_ATTR_CALIBRATE_MESSAGE method.
Calibration Count
You can query the instrument to determine how many calibrations have been
performed.
Your instrument was calibrated before it left the factory. When you receive your
instrument, be sure to read the count to determine its initial value. By monitoring
the calibration count you can read the number of times the calibration data has
been written into the DMM’s non-volatile memory.
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