EXFO FPM-300 Power Meter - Manual (Page 11)

FPM-300/FLS-300/FOT-300 6
3 Getting Started
Turning the Unit On and Off
When you turn off the FPM-300 or the FOT-300, it saves the current wavelength, unit
and reference power.
Note: Offset nulling values are always returned to factory settings.
To turn on the unit:
Press
. The unit displays EXFO Inc. for a few seconds. You may use it
immediately under normal conditions.
To turn off the unit:
From normal operating mode (that is, not FAV or PREF), hold down
a few
seconds.
I
MPORTANT
If you remove batteries (and the AC adapter is unplugged), the unit
will turn off without saving the above values.
If batteries are low (and the AC adapter is unplugged), the unit will
save the above values and turn off.
AC adapter
plugged in
Auto-off activated
Batteries in use
(with level)
Measured power/loss (FPM/FOT)
Active source wavelength (FLS)
Source wavelength (FOT)
Power meter wavelength or
reference power (FPM/FOT)
Left port’s source
modulation
(FLS/FOT)
Right port’s source modulation (FLS)
Detected modulation (FPM/FOT)
Display
Turns unit on/off
Controls auto-off
Exits special modes
PRESS: Selects
wavelength
from FAV list
HOLD: Accesses
FAV mode
Switches between
measurement units
PRESS: Displays dB units
HOLD: Sets input power as
reference power
PRESS: Switches between
modulation values
HOLD: Accesses P_REF mode PRESS: Activates next source
HOLD: Deactivates current source
FLS-300
FOT-300
FPM-300
FOT-300
Keypad