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HH 502/HH 503 CALIBRATION PROCEDURE
Note: The following calibration procedure should perform only by qualified technicians
who have access to the items as following.
Equipment: The class of calibrator had better 10 times greater than the measured meter.
1. Set the jumper position on J1 position.
2. The input selection change to T1 position, then input DCV 60mV after the display is
stabilized and press “ ENTER “ key.
3. Input 0°F after the display is stabilized and press “ ENTER “ key to complete
calibration.
4. After adjustment set the jumper back to J3 position.
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