DVM830L
VELLEMAN
2
•
Handle the multimeter with care. Dropping it may damage the circuit boards or the case and may lead to
malfunction.
•
Replace an old or weak battery with a fresh one of the required size and type.
Remove the battery during long periods of inactivity. This will protect the multimeter from possible leakage.
•
Disconnect the test probes before opening the multimeter.
•
Replace a blown fuse with a new one of the same size and type. Fuse : F 0.2A/250V
•
Refrain from using this device if anomalies are detected. Do not try to repair the device yourself: consult
authorised personnel.
•
Do not use the multimeter unless the back cover is in place and fully fastened.
•
Use a damp cloth moistened with a mild detergent for cleaning purposes. Do not use solvents or abrasive
cleansing agents or solvents.
2. Description of the Front Panel
1) FUNCTION AND RANGE SWITCH
This switch is used to select the desired function and range. It
is also used to activate the device. Place the switch in the
"OFF" position when the device is not in use in order to
extend the life of your battery.
2) DISPLAY
3 1/2 digit display with 7 segments. Height: 0.5" (12.7mm)
3) "10A" JACK
Plug in the connector for the red (+) test lead for all your 10A-
measurements.
4) "V
Ω
mA" JACK
Plug in the connector for the red (+) test lead for all voltage,
resistance and current measurements (with the exception of
10A-measurements).
5) "Common" JACK
Plug in the connector for the black (-) test lead.
6) TRANSISTOR TEST SOCKET
Plug in the transistor for hFE-measurements of a NPN or
PNP transistor.
3. Operating instructions
WARNING
1) Do not measure voltages that exceed the earthing level by more than 500V in order to avoid the risk of
electroshocks or damage to the instrument.
2) Verify whether the insulation of all test leads, probes and connectors is intact prior to activating the device.
3.1. DC Voltage Measurements
1) Connect the red test lead to the "V
Ω
mA" jack and the black lead to the "COM" jack.
2) Place the RANGE switch in the appropriate VDC position. Set the switch to the highest range and work your way
down if the voltage range is unknown beforehand.
3) Connect the test leads to the device or circuit to be measured.
4) Activate the device or circuit to be measured. Both the voltage value and the polarity will be displayed.
