EXFO FVA-3150 Variable Attenuator - Manual (Page 19)

Getting Started With Your Variable Attenuator
Variable Attenuator 13
Turning the Variable Attenuator On and Off
Turning the Variable Attenuator On and Off
When you turn on your unit:

it beeps twice

it performs a self-test

it enters the mode that was active at the last power-off (Absolute,
Offset, or Reference)
When you turn the unit off, the following items remain in read-only
memory:

current shutter state

current display mode

current attenuation setting

current wavelength

shortlisted wavelengths

each wavelength offsets

step size

remote-control settings

programmed attenuation routine settings

saved configurations
Note: The power cord is the most effective disconnecting device. To ensure that
the power is completely turned off, disconnect the power cord.