Velleman DVM52IT User Manual
Page 6
DVM52IT
VELLEMAN
6
6.8. Measuring DC Voltage
1. Connect the black test lead with the LOW jack and the red test lead with the HIGH jack.
2. Put the function switch in the 200
Ω
, 1000V
. or 700V~ position.
3. Put the range switch in the 1000V
position.
4. Connect the test leads with the source or load to be tested.
5. Read the measured voltage and the polarity of the red lead connection from the LCD.
The
symbol indicates that the limit values of 700V rms AC and 1000V DC have to be respected. It may be
possible to measure higher voltages, but this may destroy the inner circuit. Be careful to avoid electroshocks when
performing measurements.
6.9. Measuring Resistance
Disconnect the circuit to be tested and make sure that all capacitors are fully discharged before measuring the in-
circuit resistance.
1. Connect the black test lead with the LOW jack and the red test lead with the HIGH jack.
2. Put the function switch in the 200
Ω
, 1000V
. or 700V~ position.
3. Place the range switch in the 200
Ω
position.
3. Connect the test leads with the resistance under measurement.
4. Read the value from the LCD.
REMARKS
•
The LCD displays the overrange indication “1” if the measured value is too high for the range you are using.
Select a higher range.
•
The overrange indication “1” is displayed when the input is not connected e.g. in case of an open circuit.
6.10. Continuity Test
1. Connect the black test lead with the LOW jack and the red test lead with the HIGH jack.
2. Put the function switch in the 200
Ω
, 1000V
. or 700V~ position.
3. Place the range switch in the position.
4. Connect the test leads with two points of the circuit to be tested.
5. The built-in buzzer will sound if continuity exists (resistance < 50
Ω
).
7. Maintenance
7.1. Replacing the Batteries
Disconnect the test leads from the circuit to be tested before removing the battery cover. This is
necessary to avoid the risk of electroshocks.
1. The batteries need to be replaced when the
sign appears on the LCD.
2. Open the battery cover with the included screwdriver.
3. Replace the old batteries with new ones.
4. Replace the battery cover.