Velleman DVM830 - Resistance Measurement; Diode Measurement

DVM830 VELLEMAN
5
3.2. AC Voltage Measurement
1. Connect the black lead (-) to the COM input connector and the red lead (+) to the VΩmA input
connector.
2. Set the FUNCTION switch to the ACV range to be used and connect the test leads across the
source or load under test.
3. Read LCD display.
Remark: If the voltage range is not known set the FUNCTION switch to a high range and work
down.
3.3. DC Current Measurement
1. Connect the black test lead (-) to the COM input connector and the red test lead (+) to the
VΩmA input connector for a maximum of 200mA. For a maximum of 10A move the red test
lead to the 10ADC input connector.
2. Set the FUNCTION switch to the DCA range.
3. Connect the test leads IN SERIES with the load under measurement.
4. Read LCD display. The polarity at the RED test lead connection will be indicated.
Remark: if the current range is not known, set the FUNCTION switch to a high range and work
down.
3.4. Resistance Measurement
1. Connect the black lead (-) to the COM input connector and the red lead (+) to the VΩmA input
connector.
2. Set the FUNCTION switch to the Ω range and connect the test leads with the load under
measurement.
Remarks:
1. When the input is not connected, i.e. at open circuit, the figure “” will be displayed for the
over-range condition.
2. When checking in circuit resistance, be sure the circuit under test has all power removed and
that all capacitors are fully discharged.
3.5. Diode Measurement
1. Connect the black lead (-) to the COM input connector and the red lead (+) to the VΩmA input
connector.
2. Set the FUNCTION switch to the
range and connect the test leads across the diode,
display shows the approx. forward voltage on this diode.
This is a category
II measuring device and can only be
used for
measurements on low
-
voltage networks.
This is a category II measuring device and can only be
used for
measurements on low
-
voltage networks.