of meter.
Recommended Test Equipment
The following is the recommended Test Equipment for Performance Test and Calibration
procedure. If below Equipment is not available, use alternative equivalent test equipment.
Recommended
Test Equipment
under 20 % of Accuracy of meter
Basic Performance Test
Basic Performance Test checks the basic functionality of the meter. Failure of the Basic
Performance Test indicates the need for a complete calibration of the unit.
Consideration Points
Long Test Leads can act as an Antenna and capture AC Signal noises.
Best results are achieved when the following conditions are met.
Check whether measurement is stable within Adequate Environmental Temperature
18°C~28°C range. Calibration is recommended at 23°C ± 1°C.
Environment Relative Humidity below 80%.
When connect V and COM input terminals with Plugs, allow a minimum of 5 minutes warm
up time.
The Meter can perform very accurate measurements which require special care and attention
to errors during standard calibration procedures and performance test procedure. Please be
sure that the Calibrator units output is correctly at "0" when calibration for DC Voltage, DC
Currents, and Resistance.
Input Connection
Connection between the Calibrator and the Meter is recommended using minimum length
shielded Coaxial Cables. Cable screening strands must be grounded.
This is recommended to ensure minimum noise and stabilized performance during the
calibration procedure.
Calibration Precautions
To accurately calibrate the Equipment, the following points are to be compared to output
reference signals in their best conditions.
① Before calibration, Allow the Equipment a minimum 5 minute warm up time to stabilize.
② During Calibration, a low battery warning could cause a calibration error. The calibration
procedure should only be conducted with a fully charged or new battery in the meter.
③ Allow the meter and the Calibration unit to adjust to the same ambient temperature.
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