Honeywell VRX180 user manual AO Module calibration, AO Module Jumper ST1 Calibrate Analog Outputs

Maintenance

Additional calibration selections allow you to perform other calibration procedures:

CALIBRATE REFERENCE JUNCTIONS – for calibrating the two Cold Junction (CJ) references on AI module.

COPY ANALOG INPUT CALIBRATION – for copying calibration values from one AI module channel to another.

RESET ANALOG INPUT CALIBRATION – to restore AI module channels to their factory calibration.

RESET REF. FUNCTION CALIBRATION – to restore CJ reference to their factory calibration values.

8.5 AO MODULE calibration

Two calibration selections are accessible under the CALIBRATE AO menu selection

CALIBRATE AO CHANNEL – to calibrate the zero offset and span values of the AO module channels to user-defined values.

RESTORE AO FACTORY CAL – to restore factory calibrated to an AO module channel.

The AO module contains a wire jumper (labeled ST1) on the PWA. Cutting this jumper will prevent any changes to initial calibration values of the module and prevent any further field calibration.

See Figure 8-1 for the location of the jumper.

Wire Jumper ST1

S T 1

Analog Output

Module

+

O U T 4

_

!

+

O U T 3

_

+

O U T 2

_

0-20mA

+

O U T 1

_

Figure 8-1 AO Module Jumper ST1

Calibrate Analog Outputs

For CAT calibration, a precision milliammeter or a precision resistor and voltmeter is required.

246 Video Recorder – User Manual