Linear Technology LINEARCOM3000 LC3.IRTX Operation Manual page 14

Working modes
There are 3 working modes in main unit : Meeting mode, urgent mode and free mode. You
can set up on standby interface directly. Press left key to enter urgent mode; press right key
to enter meeting mode; press down key to enter free mode.
URGENT MODE
Input volume
Press MENU/CONFIRM on panel to enter into system input volume adjustment menu. It can
adjust the volume of system inputs (from -8 to + 8)
System main menu
Press MENU/CONFIRM key on standby interface to enter below menu.
Screen setup : Setup brightness and contrast of infrared main unit LCD screen.
Note : System displays English, or you can book more languages.
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MEET MODE
FREE MODE