120
Power Supply
When to replace the batteries
During battery powered operation, the battery capacity symbol is shown on the
status bar, as illustrated below. The blue section of the symbol becomes gradually
smaller as the batteries are used up. When the indication starts to ash, correct
measurement is no longer possible. Replace the batteries with a new set.
Note
While the battery capacity symbol is
or ,
the display backlight will not turn on.
External power supply (AC adapter)
To power the VA-12 from an external source, be sure to use the optional AC
adapter NC-99.
Important
Do not use an adapter other than the NC-99 to
prevent the risk of damage.
While the unit is powered from an external source, the AC adapter symbol
is shown.
Auto shut-off function
When the battery capacity symbol has started to ash in red, a message will
be displayed, and the VA-12 will turn itself off automatically after 30 seconds.
Important
If a power failure occurs while the VA-12 is powered
from the AC adapter, operation will automatically
switch to battery power if batteries are inserted,
allowing the unit to continue functioning. If no
batteries are inserted, the unit will turn off.
Backlight is disabled
Blue Blue Blue Red Red
Remaining
capacity
large
Remaining
capacity
low
Symbol ashes:
replace batteries
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