4. Operating instructions
Be extremely careful when working in high voltage circuits. Even
though meter and test leads are well insulated, it is not advisable to
handle the instrument or leads while power is on in the circuit being
measured.
Note:
1. If the value of the voltage or current to be measured is
unknown, always start with the highest range to avoid
overloading the tester. The range selector switch should not
be rotated while under load.
2. The life and reliability of the tester will be greatly increased if
test leads are removed from the circuit before changing ranges.
3. Before making any measurements, check to see that the
pointer indicates zero.
4.1. Measuring DC Voltages
1. Connect the black test lead into the COM-jack and the red
test lead into the V/
jack.
2. Set the range switch for any of the seven DC volts range
positions desired. When in doubt as to which range to use,
always start with the highest voltage range as a protection to
the instrument.
3. Connect the black test lead to the negative side of the circuit
to be measured and the red test lead to the positive side of
the circuit.
-23-
