7½ Digit Graphical Sampling Multimeter Calibration Manual Section 2:
DMM7510-905-01 Rev. A / April 2015 2-5
To run auto calibration from the front panel:
1. Press the MENU key.
2. Under System, select Calibration.
3. Select Start ACAL. A prompt is displayed.
4. Select Yes. A progress bar is displayed while the calibration runs.
To run auto calibration using SCPI commands:
Send:
ACAL:RUN
To run auto calibration using TSP commands:
Send:
acal.run()
Once auto calibration has started, you cannot stop it. After completion, however, you can use remote
commands to revert to the previous auto calibration settings. If you are using SCPI, refer to
:ACAL:REVert for detail. If you are using TSP, refer to acal.revert() (on page 4-6).
Scheduling auto calibration
You can set up your instrument to run auto calibration automatically. You can also set up the
instrument to prompt you to run auto calibration at regular intervals. To determine the best schedule
for your application, see the Model DMM7510 specifications for detail on the accuracy with and
without auto calibration.
Autocalibration does not start until all actions that are active on the instrument are complete. When
the scheduled time occurs, the autocalibration run command is placed in the command queue and
will be executed after any previously sent commands or actions have executed. For example, if a
trigger model is running when autocalibration is scheduled to run, autocalibration does not start until
the trigger model stops.
If there is a command or action that is waiting a long time for an event, the autocalibration will not run
until the event occurs, the action is aborted, or the instrument power is cycled.
If the scheduled time for autocalibration occurs before the warmup period completes, the instrument
will not start autocalibration. The instrument waits until the warmup period is complete before starting
a scheduled autocalibration. A message is displayed when warmup is complete and autocalibration is
going to run.
If the instrument is powered off when an autocalibration was scheduled, autocalibration is run as soon
as the warmup period is complete when the instrument is powered on.
You can run autocalibration manually even if a scheduled autocalibration is set.
When autocalibration is scheduled to run at a scheduled interval, but it runs at a time other than the
scheduled interval, subsequent scheduled intervals are adjusted according to the actual
autocalibration start time.
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