Fluke 8842a instruction manual 12. A/D Calibration, Calibration Functions

8842A

Instruction Manual

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Figure 6-3. Calibration Functions

The following functions are inappropriate during calibration, and are therefore unavailable:

∙Offset

∙Autoranging

∙External Trigger

∙Front Panel Trigger

∙Front panel SRQ (Under local control)

∙Diagnostic self-tests

6-12. A/D CALIBRATION

The A/D Calibration procedure calibrates the analog-to-digital converter for offset, gain and linearity. The 8842A automatically selects the A/D calibration procedure when the CAL ENABLE switch is first pressed. The procedure must be performed in its entirety, and may not be performed in part. If the A/D calibration is discontinued prior to completion, the last complete set of A/D calibration constants will be retained unchanged.

To perform A/D Calibration, proceed as follows:

1.Ensure the Initial Procedure has been completed. The 8842A then displays the prompt for the first reference source, zero volts (i.e., a short).

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