UNI-T UT803 Operating Manual page 27

Model UT803: OPERATING MANUAL
To test a diode out of a circuit, connect the Meter as follows:
1. Insert the red test lead into
test lead into the COM terminal.
2.
Set the rotary switch to
button to select
3.
For forward voltage drop readings on any
semiconductor component, place the red test lead
on the component's anode and place the black test
lead on the component's cathode. The measured
value shows on the display.
Note
l
Connect the test leads to the proper terminals as
said above to avoid error display. The LCD will
display OL indicating diode being tested is open or
polarity is reversed. The unit of diode is Volt (V),
displaying the forward voltage drop readings.
l
Open circuit voltage is around 2.7V.
terminal and the black
and press SELECT
measurement mode.
l
When diode testing has been completed, disconnect
the connection between the testing leads and the
circuit under test, and remove the testing leads away
from the input terminals of the Meter.
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