AUDAC ARU20 Series, Руководство пользователя

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16
Chapter 4
Application examples
Example 1:
The above diagram shows an example of a simple and basic setup with an APM1xx paging
console in an analogue paging setup, combined with an ARU20x relay unit. Besides the
APM1xx paging console, a background music source (ISP40 in this typical setup) is con-
nected.
The output of the relay unit is connected to a four channel 100V power amplifier (which
also could be four individual amplifiers) for amplification of the signals for each particular
zone.
In normal situation, the music coming from the background music source will be heard in
all zones (the relays will be switched to background music). In case of an announcement,
the ARU will switch to the signal from the paging microphone for the channels which were
selected through the APM keypad and the announcement will be heard in the selected
zone.
This setup has an individual amplifier (of channel) for each zone, allowing announcemets
to each zone individually, and allowing the dimensioning of the amplifier power to the re-
quirements for each zone.