Megger AVO410 User Manual download pdf (Page 6)

Operation

AC VOLTAGE MEASUREMENTS

1. Set the function switch to the V AC position (AUTO, T-RMS and AC volts will

appear on the display).

2. Insert the black test lead in the COM jack and the red test lead into the V

jack.

3. Connect the test probe tips to the circuit under test.

4. Read the voltage on the display.

DC VOLTAGE MEASUREMENTS

1. Set the function switch to the V DC position (AUTO and DC volts will be

appear on the display).

2. Insert the black test lead into the COM jack and the red test lead into the V

jack.

3. Connect the test probe tips to the circuit under test. Be sure to observe the

correct polarity (red lead to positive, black lead to negative)

4. Read the voltage on the display. If the polarity is reversed, the display will

show (-) minus before the reading.

RESISTANCE (Ω) MEASUREMENTS

1. Set the function switch to the Ω position (AUTO and MΩ will appear on the

display).

2. In addition, O.L will be displayed indicating an open circuit.

3. Insert the black test lead into the COM jack and the red test lead into the Ω

jack.

4. Connect the test probe tips to the circuit under test.

5. According to measured value the reading will be in Ω, kΩ or MΩ.

Note: The AVO410 provides an open circuit voltage <-1.5 V to the circuit under

test which will cause transistor junctions to conduct so it is advisable to

disconnect the item to be tested from the circuit to obtain an accurate reading.

DIODE / CONTINUITY TESTS

WARNING: To avoid electric shock never test a diode or conduct a continuity

test on an energized circuit.

1. Set the function switch to the diode/continuity position. (The diode and V

symbols will appear).

2. In addition, .OL will be displayed indicating an open circuit.

3. Insert the black test lead into the COM jack and the red test lead into the Ω

jack.

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Megger AVO410 User Manual Page 6