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FUNCTION REFERENCE

CALIBRATION AUTOCAL

Description:

The CAL key is used to make a fine adjustment of the oscilloscope’s input, trigger, and timebase circuitry to achieve high accuracy even under extreme environmental conditions such as very high or very low temperatures. In a workshop or laboratory environment, a fine adjustment once a week or even every month is sufficient.

It is recommended that you do the fine adjustment after the instrument has warmed up. For a complete calibration (advised once a year or every 2000 service hours), a special submenu is available in the maintenance menu.

Calibration data are protected by a keyword and a seal. Calibration should be done by qualified personnel only. For details, refer to the chapter ’Calibration Adjustment Procedure’ in the service manual.

Attention: Calibration autocal data disappears after having removed back up batteries while the oscilloscope is not powered by line.

Key sequence:

CAL

Key to start the fine adjustment procedure. Press this key for at least 2 seconds to start the procedure.

Remote commands:

CPL: CL (Command for Calibrate)

Refer to Chapter 6 for full details

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Fluke PM3370B user manual Calibration Autocal, CPL CL Command for Calibrate Refer to for full details