Maintenance; Front Panel Description - Velleman DVM830 User Manual

• Make sure to disconnect the test leads from any circuit before testing transistors. Components
should not be connected to the hFE sockets when measuring voltage.

1.3. Maintenance

Your DVM830 is an example of superior design and craftsmanship. The following suggestions will
help you care for the multimeter so you can enjoy it for years:
• Keep the multimeter dry. If it gets wet, wipe it dry immediately.
• Use and store the multimeter only in normal temperature environments. Temperature
extremes can shorten the life of electronic devices or damage batteries.
• Handle the multimeter gently and carefully. Dropping it can damage the circuit boards and
case and can cause the multimeter to work improperly.
• Use only fresh batteries of the required size and type. Always remove old or weak batteries.
If you do not plan to use the multimeter for a month or more, remove the batteries. This
protects the multimeter from possible leakage.
• Disconnect the test probes before opening the multimeter.
• Replace blown fuses only with same size and type:
F: F 0.2A/250V
• If any faults or abnormalities are observed, do not use this device and let it check by
authorised personnel.
• Never use the meter unless the back cover is in place and fastened fully.
• To clean the meter, use a damp cloth and mild detergent only, do not use abrasives or
solvents.

2. Front Panel Description

1. display
2. RANGE and FUNCTION switch
3. transistor test socket
4. input connector COM
5. input connector VΩmA
6. input connector 10ADC
3. Operating Instructions
3.1. DC 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 DCV range to be used and connect the test leads across the
source or load under test.
3. Read LCD display. The polarity of the RED lead connection will be indicated.
Remark: If the voltage range is not known set the FUNCTION switch to a high range and work
down.
This is a category II measuring device and can only be used for
measurements on low-voltage networks.
DVM830 4 VELLEMAN