Section 5
Calibrating the Meter
5-1 Introduction
CAUTION!
TO AVOID DAMAGING THE DEFAULT CALIBRATION DATA STORED IN A
NON-VOLATILE MEMORY, A CALIBRATION TO THE METER CAN ONLY BE
DONE BY AN AUTHORIZED SERVICE CENTER AND QUALIFIED PERSONNEL
WITH APPROPRIATE EQUIPMENT.
THE WARRANTY WILL BE EXPIRED IF THE SEALED LABEL ON THE CAL
BUTTON OF THE FRONT PANEL IS BROKEN.
FORE DETAIL INFORMATION ABOUT CALIBRATION PROCEDURES, PLEASE
CONTACT FACTORY OR AUTHORIZED DISTRIBUTOR.
It is recommended to recalibrate and verify the meter at least once a year to
ensure it meets the original designed performance and specifications.
The meter is designed with closed-case calibration capability (no internal
adjustment). To enter calibration mode by pressing the CAL button located in
the hole on the upper right position of the front panel display screen.
The meter can be calibrated and verified by keystrokes via the front panel or
through RS-232 interface command with appropriate equipment and qualified
personnel only.
5-2
Environmental Condition
Calibration or verification test should be performed under laboratory
condition which ambient temperature/ relative humidity can be controlled.
5-3
Warm up
Allow up to at least 60 minutes warm-up time before performing calibration
or a verification test to the meter. After exposure or storage in a high humidity
(condensing) environment, 2 hours warm-up time is essentially required.
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