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8.4 Error Messages
The Nova displays various error messages when
operated outside its normal range:
Over-range: When the power or energy being
measured exceeds the range of the measurement
scale being used, the over-range message is
displayed, but the reading still appears on the display.
If the power or energy exceeds the maximum by more
than 10%, the reading on the display is blanked.
Low Battery: When the battery is almost discharged,
the flashing message "BAT" appears. When the low
battery message appears, the Nova should be
connected to the charger. It will operate normally and
charge slowly while connected to the charger. When
connected to the charger while turned off, the Nova
will charge faster, in about 18 hours.
Sat: When the photodiode current exceeds 1mA and
the detector starts to saturate, the message "sat " is
displayed.
8.5 Troubleshooting
8.5.1 Nova Display
Problem
Instrument will not
operate after being
completely discharged
and connected to
charger.
Instrument operates with
charger but not with
battery.
Cause/Remedy
Check that charger
provides 200mA.
Battery is low.
Recharge overnight
with the Nova turned
off for 14-16 hours. If
the Nova still doesn't
work with battery, then
the NiCd battery is
dead. Replace battery.
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