8
DIODE CHECK
CONTINUITY CHECK
•
Use the diode test mode to check diodes, transistors and other semiconductor
devices. In diode test mode, a current is sent through the semiconductor junction
and the voltage drop across the junction is measured.
•
A good silicon junction drop is between 0.5V and 0.8V.
•
To test a diode out of a circuit, perform the following steps,
1.
Insert the red test lead into the Hz Duty%
terminal and the black
test lead into the COM terminal.
2. Turn the rotary switch to . Press
SELECT to switch from diode
measurement mode as default to continuity
measurement mode if needed.
3. For forward voltage drop readings on any
semiconductor component, connect the red
test probe to the component’s anode and
the black test probe to the cathode.
Notes:
•
To obtain a more precise reading, you could
remove the object being measured from the
circuit when measuring.
•
When a measurement has been completed,
disconnect the test probes from the circuit
under test, and remove the test leads from the
input terminals.
•
To test continuity, perform the following steps:
1.
Insert the red test lead into the Hz Duty%
terminal and the black
test lead into the COM terminal.
2. Turn the rotary switch to
and press SELECT button to choose the
measurement mode.
•
The buzzer will sound if the resistance of a
circuit under test is less than 50Ω.
•
The buzzer may sound if the resistance of a
circuit under test is between 50Ω and 100Ω.
•
The buzzer does not sound if the resistance of
a circuit under test is higher than 100Ω.
Note:
•
When a measurement has been completed,
disconnect the test probes from the circuit
under test, and remove the test leads from the
input terminals.