- 20 -
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.
Capacitance & Diode functions
Inputs are made through the test lead terminals. Defaults at
Capacitance. Press
SELECT
button momentarily and release to
select Diode.
When using Diode test function, normal forward voltage drop
(forward biased) for a good silicon diode is between 0.400V to
0.900V. A reading higher than that indicates a leaky diode
(defective). A zero reading indicates a shorted diode (defective). An
OL indicates an open diode (defective). Reverse the test leads
connections (reverse biased) across the diode. The digital display
shows OL if the diode is good. Any other readings indicate the diode
is resistive or shorted (defective).
Note
Resistance & Continuity Functions
Inputs are made through the test leads terminals. Defaults at
RESISTANCE
. Press
SELECT
button momentarily and release to
select. Continuity.
1. Using Resistance, Continuity, Diode or Capacitance function in a
live circuit will produce false results and may damage the meter. In
many cases the suspected component (s) must be disconnected
from the circuit to obtain an accurate measurement reading.
CAUTION
2. When using Capacitance function, discharge capacitor(s) before
making any measurements. Large value capacitors should be
discharged through an appropriate resistance load
WARNING
Do not use the meter to measure currents above the rated frequency
(400Hz). Circulating currents may cause the magnetic circuits of the
Jaws reach a hazardous temperature.
- 19 -
For non-invasive current measurements, press the jaw trigger and
clamp the jaws around conductor(s) of only one single pole of a
circuit for load current measurement. Make sure the jaws are
completely closed, or else it will introduce measurement errors.
Enclosing conductor(s) of more than one pole of a circuit may result
in differential current (like identifying leakage current)
measurement. Locate the conductor(s) at the Jaws center as much
as possible to get the best measuring accuracy. For removal, press
the jaw trigger and remove the jaws from the conductor(s).
CAUTION (Application and removal of the Clamp-on meter)
1338
AUTO
SELECT
1
A
~
501
Hz
580.2
AUTO
SELECT
I
1
A
