EXFO FPM-600 Power Meter - Manual (Page 20)

Getting Started
14 FPM/FLS/FOT-600
Activating the Backlight
Activating the Backlight
When operating the unit in the dark, use the backlight to make data on the
display more visible. The keypad buttons will also light for about 10
seconds.
Note: When backlight is activated, you must always press a button once to light
the keypad, then press the actual button you want.
To activate/deactivate the backlight:
From normal operating mode, hold down
( on FLS-600) a few
seconds.
Accessing and Navigating Setup Menus
Setup menus differ in each model. You may access and navigate menus as
follows:

Press repeatedly to switch between options in a menu level.

Press once to access a submenu from the main level.

Press to exit menus (one level at a time).
Note: Details about each menu option are given in this user guide.