5
When voltage or current function is selected, press and hold
THD%-R
button for one
second or more toggles to Total Harmonic Distortion - RMS measurement function. The LCD
annunciator “%” turns on.
Note:
Specified accuracy at ACA fundamental > 5A; ACV fundamental > 50V.
The meter displays “
---.-
%” when ACA fundamental < 1A; ACV fundamental <8.5V
ACA Current clamp-on function
Set the slide-switch function-selector to the position. Inputs are made through the clamp
jaws for non-invasive ACA current measurements.
CAUTION
●
For non-invasive ACA
current measurements,
press the jaw trigger and clamp the jaws
around only one single conductor of a circuit for load current measurement. Make sure the
jaws are completely closed, or else it will introduce measurement errors. Enclosing more
than one conductor of a circuit will result in differential current (like identifying leakage
current) measurement.
●
Adjacent current-carrying devices such as transformers, motors and conductor wires will
affect measurement accuracy. Keep the jaws away from them as much as possible to
minimize influence.
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