Velleman DVM990BL - Manual (Page 13)

DVM990BL VELLEMAN 12
NOTE:
1.
The meter will show the approximate forward voltage drop of the
diode.
2. If the lead connection is reversed, only the figure "1" will be displayed.
4.11. CONTINUITY
TEST
4.11.1. Connect the black test lead to the COM socket and the red test lead to
the V/
Ω
socket.
4.11.2. Set the rotary switch to the position.
4.11.3. Connect the test leads across two points of the circuit under test.
4.11.4. If there is continuity (i.e. resistance less than about 70
Ω
), the built-in
buzzer will sound.
NOTE:
If the input is open circuit, the figure "1" will be displayed.
5. MAINTENANCE
WARNING
Before attempting to remove the battery door or open the case, be sure
that the test leads have been disconnected from the circuit under test in
order to avoid electric shock hazard.
5.1. BATTERY
REPLACEMENT
5.1.1. If the "
" indicator appears on the LCD display, it indicates that the
battery should be replaced.
5.1.2. Loosen the screw fixing the battery door and remove it.
5.1.3. Replace the dead battery with a new one.
5.1.4. Put back the battery door.