EXFO EPM-500 Power Meter - Manual (Page 12)

Getting Started 7
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 lighten for about 10 seconds.
Note: When backlight is activated, you must always press a button once to
lighten the keypad, then press the actual button you want.
To activate/deactivate the backlight:
From normal operating mode, press
.
Accessing and Navigating Setup Menus
Setup menus differ in each model. You may access and navigate menus as follows:
³
Press repeatedly to switch between options in a menu level.
³
Press once to access a submenu from the main level.
³
Press to exit menus (one level at a time).
Note: Details about each menu option are given in this user guide.
PM DATA SRC
P/F CAB 1
*
PREF
Normal Mode
EOT-500
*: Default cable name
PM DATA
P/F CAB 1
*
Normal Mode
EPM-500 ELS-500
SRC
PREF
Normal Mode
*: Default cable name