FaraDigi FDM18A, User Manual

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Schematic diagrams for the meter
professionals.
*
When the meter's case is opened, the operator must understand the
fact that the presence of some capacitance may promise the
dangerous voltages even if the power supply to the meter is cut off.
*
The operator should stop using and maintain the meter immediately
if any abnormality has been observed on the meter. The operator
must see to it that the meter cannot be in service unless it is proved
conforming.
*
When the meter is left idle for a long period, the operator shall
remove the battery and place it in a place free from high
temperature and humidity.
1.2 Input protection measures
*
The meter can sustain the maximum input voltage of 1000V (DC) or
750V (AC) at the moment of voltage measurement.
*
The meter can sustain the maximum AC voltage of 600V or
equivalent voltage (valid value) when the tests on frequency,
electric resistance, continuity and diode are carried out.
*
The protective tube (FF600mA/ 250V) is used for protection
purpose when µA and mA current measurements are carried out.
2. A Schematic Diagram for the Meter
This meter is a hand-held digital multi-meter with the function of
displaying True RMS. it is a large-screen LCD unit with backlight and
illumination light functions so that the user can easily recognize
reading. It is equipped with the function of overload protection and
the indicator of battery under voltage. Either for professionals,
factories, schools, enthusiasts or households, it is an ideal
multi-functional meter.