Velleman DVM92 Notice page 4

3.2. Measuring AC Voltage
1. Connect the black test lead (-) to the "COM" jack and the red test lead (+) to the "V/Ω" jack.
2. Select the appropriate V ∼ range with the FUNCTION switch and connect the test leads to
the source or load to be tested.
3. The measured value appears on the LCD display.
Remark : Set the FUNCTION switch to the highest range and gradually work your way down if
the voltage range is unknown beforehand.
3.3. Measuring DC Current
1. Connect the black test lead (-) to the "COM" jack and the red test lead (+) to the "mA" jack
for measurements of max. 200mA. Move the red test lead to the "10A" jack for
measurements of max. 20A (for max. 15 sec. at a stretch).
2. Select the A range with the FUNCTION switch.
3. Connect the test leads IN SERIES with the load under measurement.
4. The polarity of the red test lead and the measured current are displayed on the LCD.
Remark : Set the FUNCTION switch to the highest range and gradually work your way down if
the current range is unknown beforehand.
3.4. Measuring AC Current
1. Connect the black test lead (-) to the "COM" jack and the red test lead (+) to the "mA" jack
for measurements of max. 200mA. Move the red test lead to the "10A" jack for
measurements of max. 20A (for max. 15 sec. at a stretch).
2. Select the A~range with the FUNCTION switch.
3. Connect the test leads IN SERIES with the load under measurement.
4. The measured value is displayed on the LCD.
Remark : Set the FUNCTION switch to the highest range and gradually work your way down if
the current range is unknown beforehand.
3.5. Measuring Resistance
1. Connect the black test lead (-) to the "COM" jack and the red test lead (+) to the "V/Ω" jack.
2. Select the V/Ω-range with the FUNCTION switch and connect the test leads with the load
under measurement.
Remarks :
The meter may need a few seconds to produce a stable reading for resistance
measurements in excess of 1MΩ.
The overrange indication ("1.") will appear on the display if the input is not connected or if
the resistance being measured exceeds the max. value of the selected range.
Disconnect the circuit to be tested and make sure that all capacitors are fully discharged
before measuring the in-circuit resistance.
DVM92 4 VELLEMAN