Continuity Testing - Surtek MUL04 Manual De Usuario Y Garantía

c. 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
• In a circuit, a good diode should still produce a forward voltage drop reading of
0.5 V to 0.8 V; however, the reverse voltage drop reading can vary depending on
the resistance of other pathways between the probe tips.
• Connect the test leads to the proper terminals as said above to avoid error
display.
• The open-circuit voltage is around 2.7 V when testing diode.
• The LCD will display 1 indicating open-circuit for wrong connection.
• The unit of diode is Volt (V), displaying the positiveconnection voltage-drop
value.
• When diode testing has been completed, disconnect the connection between
the testing leads and the circuit under test.
5. CONTINUITY TESTING (see Fig. 4)
WARNING: To avoid possible damage to the Meter and to the device under test,
disconnect circuit power and discharge all high-voltage capacitors before testing
diodes and continuity.
Never attempt an in-circuit current measurement where the open circuit voltage
between terminals and ground is greater than 60 V DC or 30 V AC rms.
To test for continuity, connect the Meter as below:
a. Insert the red test lead into the
COM terminal.
b. Set the rotary switch to
c. Connect the test leads across with the object being measured.
The buzzer does not sound when the resistance value
is >50. The circuit is disconnected. The buzzer sounds continuously when the
resistance value is
NOTE
• The LCD displays 1 indicating the circuit being tested is open.
• Open-circuit voltage is approx. 2.7 V.
• When continuity testing has been completed, disconnect the connection
between the testing leads and the circuit under test..
6. DWELL TESTING (see Fig. 5)
It was very important in the past to test the dwell of the cut-off switch of an ignition
system. The dwell testing means the duration when the cut-off switch remains off
when the cam is turning. Now as an automobile is ignited electronically, it is no
longer necessary to adjust the dwell. In addition, the dwell testing can also be used
to test a mixed-controlled solenoid. (e.g. GM feedback carburetor).
.
30 Ω. The circuit is in good condition.
Fig. 5
E N G L I S H •
terminal and the black test lead into the
Use r's M a nual
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