EXFO FVA-600 - Manual (Page 23)

FVA-600 17
Replacing the Battery
Your unit requires one Li-Ion battery.
To replace the battery:
1. Turn off the unit (if the AC adapter is plugged in,
you may replace the batteries while unit is on).
2. Open the battery compartment door located at the
back of the unit.
3. Replace batteries respecting the polarity.
4. Close the battery compartment door.
Checking the LCD Display
If you suspect that part of the LCD display is not lighting up properly, you can
perform a test to light up all segments at once.
To check the LCD Display:
1. When the unit is on, press and hold
and simultaneously.
2. Press any button to exit the LCD check mode.
Reverting to the Default Settings
You can revert to the default settings for the following parameters in one step:
³
Preselected wavelengths
³
Smallest step size in use
³
Backlight off
³
Use absolute operation mode
To reset the values:
When the unit is on, press and hold
and .
W
ARNING
Do not throw batteries into fire or water and do not short-circuit
the batteries’ electrical contacts. Do not disassemble.
Abs/
Rel/
Pwr
λ Select