HP 6633B - Manual (Page 62)

B - Verification and Calibration
62
AC Current Measurement Calibration (HP 66332A only)
Action Display
26. Disconnect all loads from the dc source. Make sure the mode switch
on the rear panel is set to Normal.
27. Press Shift Cal, scroll to CAL CURR MEAS AC, and press Enter. CAL:CURR:MEAS AC
28. Wait for the dc source to compute the ac current calibration constant.
The display returns to Meter mode when the calculation is complete.
Saving the Calibration Constants
WARNING: Storing calibration constants overwrites the existing ones in non-volatile memory.
If you are not sure you want to permanently store the new constants, omit this
step. The dc source calibration will then remain unchanged.
Action Display
29. Press Shift Cal, scroll to CAL SAVE, and press Enter. CAL:SAVE
30. Press Shift Cal, select CAL OFF, and press Enter to exit
Calibration mode. *RST and *RCL will also set the calibration state
to OFF. CAL OFF
Calibration Error Messages
Errors that can occur during calibration are shown in the following table.
Table B- 7. HP-IB Calibration Error Messages
Error Meaning
401 CAL switch prevents calibration (This is a hardware disable, see the Service Manual.)
402 CAL password is incorrect
403 CAL not enabled
404 Computed readback cal constants are incorrect
405 Computed programming cal constants are incorrect
406 Incorrect sequence of calibration commands