9
APPLICATIONS
Multi-Floor Office/Hospital Paging System
This application shows three TMA120s being used in a multi-floor office/hospital paging system. An all-call
paging microphone and a background music source are distributed independently to the three TMA120s.
Channel #1 of each TMA120 is set for input from line-level all-call paging, and is assigned as a priority
channel. Channel #2 of each TMA120 is set for input from the respective floor paging microphone, and is
assigned auto muting of -40dB. The push-to-talk switch of each floor paging microphone is wired to the
Mute/Chime terminals of the respective TMA120. Channel #3 of each TMA120 is set for input from line-level
background music, and is assigned manual and auto muting of -20dB. Therefore, local paging will manually
mute the background music only on that floor (-20dB), whereas, all-call paging will automatically mute
background music (-20dB) and local paging (-40dB) on all floors. The TMA120s are set for 'xfmr' output and
are connected to 70V/100V distributed speaker systems for each floor.
WARNING: THE ABOVE DIAGRAM SHOWS THE OUTPUT TERMINAL COVER REMOVED FOR CLARITY ONLY. THE COVER
MUST BE INSTALLED WHEN THE UNIT IS ENERGIZED.
