Fig. 4 Back panel
III. Measurement and wiring method
The measurement wiring is seen in “Fig.4 Back panel”.
1. The power socket labelled with “AC SOURCE” on the left side is the power inlet socket of
the measured object (power source required by the measured load, for instance, the measured load
is efficient lightbulb that requires the power of 120V, the 120V voltage shall be input here)
2. The white universal charge socket labelled with “LOAD” in the middle is the power outlet
socket of the measured object (power source required by the measured load will be output here).
When there are high-frequency components inside the measured voltage or current, or the heavy
current is measured, it should be noted that the possible mutual interference and noise will
influence the measurement accuracy.
Attention: according to the working current of the measured piece during the wiring,
wire strong enough shall be adopted in case of dangers caused by excessive wire resistance,
additive measurement error and possible wiring heating. The wire shall be as short as
possible and kept as far away from the instrument shell as possible.
3. The left power socket is the power socket of the instrument (power supplied for the
instrument work, what below the power socket of the instrument are the voltage input selection
switch and 232 interface to connect computers in turn).
Power
the measured load
Fig. 5 Measurement Principle
IV. Power-on measurement
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