Prokit's Industries MT-3109 - Manual (Page 11)

MT-3109 AC/DC Digital Clamp Multimeter
voltage drop across the junction. A good silicon junction drops
between 0.5V and 0.8V.
To test the diode out of a circuit, connect the Meter as follows:
1. Insert the red test lead into the Hz Duty% -i))-H VQ terminal
and the black test lead into the COM terminal.
2. Set the rotary switch to . Diode measurement mode is
a default or presses SELECT to select measurement
mode.
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.
Note
 To obtain a more precise reading, you could remove the
objects being tested from the circuit when measuring.
 When diode testing has been completed, disconnect the
connection between the testing leads and the circuit under
test and remove testing leads from the input terminals.
D. Testing for Continuity (see figure 6)
Warning
To avoid damages to the Meter or
to the devices under test,
disconnect circuit power and
discharge all the high-voltage
capacitors before measuring
continuity.
To test for continuity, connect the
Meter as follows:
1. Insert the red test lead into the Hz Duty%
terminal and the black test lead into the COM terminal.
2. Set the rotary switch to and press SELECT button
to select measurement mode. The buzzer sounds if
the resistance of a circuit under test is less than 50Ω
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