ADInstruments AD3348 Manual De Usuario página 21

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2. Set the function switch to the V position.
3. Select AC or DC with the MODE button.
4. Connect the test leads in parallel to the circuit under test.
5. Read the voltage measurement on the LCD display.
Resistance and Continuity Measurements
Insert the black test lead into the negative COM terminal and the
1.
red test lead into the positive terminal.
Set the function switch to the
2.
Use the multifunction MODE button to select resistance.
3.
Touch the test probe tips across the circuit or component under
4.
test. It is best to disconnect one side of the device under test so
the rest of the circuit will not interfere with the resistance reading.
For Resistance tests, read the resistance on the LCD display.
5.
For Continuity tests, if the resistance is < 100:, a tone will sound.
6.
Diode Measurements
1. Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the
positive diode jack.
2. Turn the rotary switch to the
3. Press the MODE button until "
4. Touch the test probes to the diode under test. Forward voltage will indicate 0.4V to 0.7V. Reverse voltage will
indicate "OL". Shorted devices will indicate near 0mV and an open device will indicate "OL" in both
polarities.
Red
Forward test
Capacitance Measurements
WARNING: To avoid electric shock, disconnect power to the unit under test and discharge all capacitors
before taking any capacitance measurements. Remove the batteries and unplug the line cords.
1. Set the rotary function switch to the cap position.
2. Insert the black test lead banana plug into the negative (COM) jack.
Insert the red test lead banana plug into the positive (V) jack.
3. Touch the test leads to the capacitor to be tested.
4. Read the capacitance value in the display
Frequency or % duty cycle measurements
1. Set the function switch to the V position.
©Copyright Abacanto Digital SA.
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" appears in the display.
Black Black
Reverse test
Manual de usuario AD3348
AD Instruments
21