DVM890L GB 11
4.10 Diode Test and Audible Continuity Test
Range Description Test Condition
/
Display shows approx.
forward voltage of
diode
Forward DC current approx. 1mA
Reversed DC voltage approx. 2.8 Volts
/
Built-in buzzer sounds
if conductance is less
than approx. 30Ω
Open circuit voltage approx. 2.8 Volts
5. Maintenance
Your Digital Multimeter is an electronic precision instrument. In order to avoid damage, avoid
tampering with the circuitry.
A: Never connect more than 1000 Volts DC or 700 Volts AC to the instrument.
B: Never connect a voltage source to the instrument with its function switch set to the OHM
position.
C: Never operate the DVM unless the back cover is in place and fully closed.
D: Battery and/or fuse replacement should only be performed once the test leads have been
disconnected and the power is OFF.
5.1 9-Volt battery replacement
Check the condition of the 9V battery when following the procedure described above. If the battery
needs to be replaced : open the back cover, remove the old battery and replace it with a battery of
the same type.
5.2 Fuse replacement
Should the fuse need replacement : only use 200mA fuses that are identical to the original in
physical size.
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