12
Diode Test
To avoid electrical shock and/or damage to the instrument,
disconnect circuit power and discharge all high-voltage capacitors
before testing diodes.
To test a diode out of a circuit:
1. Set the dial to
Ω
Ω
range.
2. Press the 'S
SE
EL
LE
EC
CT
T' key once to activate (diode test) mode.
3. Connect the black test lead to the C
CO
OM
M and red test lead to the H
Hz
z
Ω
Ω
V
V °
°C
C terminals respectively.
4. For forward-bias readings on any semiconductor component, place the red test
lead on the components anode and place the black test lead on the
components cathode.
5. The meter will show the approx. forward voltage of the diode.
N
NO
OT
TE
E:: In a circuit, a good diode should still produce a forward bias reading of
0.5V to 0.8V; however, the reverse-bias reading can vary depending on the
resistance of other pathways between the probe tips.
Continuity Check
To avoid electrical shock and/or damage to the instrument,
disconnect circuit power and discharge all high-voltage capacitors
before testing for Continuity.
To test for continuity:
1. Set the dial to
Ω
Ω
range.
2. Press the 'SELECT' key twice to activate (continuity check) mode.
3. Connect the black test lead to the C
CO
OM
M and red test lead to the H
Hz
z
Ω
Ω
V
V °
°C
C terminals respectively.
4. Connect the test leads to the resistance in the circuit being measured.
5. When the test lead to the circuit is below 50
Ω
, a continuous beeping will
indicate it.
N
NO
OT
TE
E:: Continuity test is available to check open/short of the circuit.
5163440K_Instructions.qxd 18/09/2009 10:32 Page 12
