9
English
Note
• The test leads can add 0.1Ω to 0.3Ω of error to resistance mea
surement. To obtain precision readings in low-resistance measure-
ment, that is the range of 200Ω, short-circuit the input terminals
beforehand and record the reading obtained. This is the additional
resistance from the test lead.
•
OL displays when the circuit is open or the resistor value is higher
than max range.
Diode test (see fig 3)
Use the diode test to check diodes, transistors, and other semicon-
ductor devices. The diode test sends a current through the semicon-
ductor junction, and then measures the voltage drop across the
junction. A good silicon junction drops between 0.5V and 0.8V.
To test a diode out of a circuit, connect as follows:
1. Insert the red test lead into the VΩ terminal and the black test
lead into the COM terminal.
2. Set the rotary switch to diode position.
3. Push select button to select diode function. Displays shows diode
symbol.
4. For forward voltage drop readings on any semiconductor compo-
nent, 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.
Continuity test (see fig 3)
To test for continuity, connect as follows:
1. Insert the red test lead into the VΩ terminal and the black test
lead into the COM terminal.
2. Set the rotary switch to continuity position.
3. Push select button to select continuity function. Displays shows
continuity symbol.
manual_limit20 05-05-26 18.53 Sida 12
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