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5790B
Service Manual
Save Calibration Reports
Calibration reports can be created and exported to a USB flash drive using
remote commands. The subsequent sections describe the reports.
To save a calibration report:
1. Put a flash drive into the front USB port.
2. Execute the "CAL_USB" command. Refer to the Remote Commands section
3. Open or print the file from the PC.
Calibration Adjustment Security Passcode
The integrity of Product calibration is protected by a security passcode that must
be entered before new calibration constants can be saved to non-volatile
memory. This passcode replaces the hardware calibration switches found on
previous generation products such as the Fluke 5790A.
If the passcode has not been entered, the Product is secured. Once the
passcode is entered, the Product is unsecured. The Product secures itself when
it is reset. The Product can be unsecured at any time over the remote interface
with the CAL_SECURE command or by entering the passcode. The front panel
prompts for the passcode to unsecure the Product before it can accept new
values to be eventually stored. The passcode contains 1 to 8 decimal digits. The
Product is shipped with the passcode set to "5790". To change the passcode,
touch Setup Menu>Calibration>Change Calibration Passcode. The Product
prompts for the current passcode and then the new passcode. The passcode can
also be changed over the remote interface with the CAL_PASSWD command. If
the passcode for a particular Product is lost, contact Fluke Customer Support.
See How to Contact Fluke Calibration.
Full or Range Calibration Adjustment
When a calibration adjustment of the main input is performed, complete
calibration adjustment of the dc measurement function first because subsequent
ac calibration relies on the Product dc measurement accuracy. Calibration
adjustment of both the dc and the ac functions is called full calibration
adjustment.
Instead of full calibration adjustment, you can select the range calibration, which
presents display prompts for adjusting the dc or ac functions of a single input
range. This allows you to repeat portions of a just-completed calibration
adjustment. You can use the "Skip Step" softkey to redo one or a few points,
leaving the rest of the calibration adjustment points unchanged. Once you select
the input and range, use the selected range softkey in the calibration screen to
proceed with the calibration steps exactly as explained under Calibrating the
Main Input or Calibrating the WIDEBAND Input.
3-2
for more information including associated arguments and usage. Once the
command is executed, the report starts downloads to the USB drive. It can
take up to 2 minutes to complete. Use the *OPC or *OPC? remote command
to determine when the download has completed. The report is in comma
separated value (CSV) format and can be imported into a spreadsheet
program such as Microsoft Excel.
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