5
Note: DC 400.0mV range is designed with 1000M
Ω
high input impedance for least
current drain in measuring small signals, and can cope better with most commercially
available voltage output transducers/adapters. The non-zero display reading is normal
when the meter inputs are open circuit, which will not affect actual measurement
accuracy. The meter will show close-to-zero readings when the inputs are shorted.
Open input is actually a floating condition, which is not a zero-volt-input condition.
ACA & DCA Current clamp-on function
Inputs are made through the clamp jaws for non-invasive ACA & DCA current
measurements.
CAUTION
(Application and removal of the Clamp-on meter)
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 measurement (like identifying leakage current). Locate the
conductor(s) at the Jaws center as much as possible to get the best measuring
accuracy. The jaw “
+
” mark indicates current flow direction on DCA positive readings.
