26 Description TB9100/P25 CG/P25 TAG Installation and Operation Manual
© Tait Limited March 2014
Intermodule Communications
A system control bus and a subrack interconnect board interconnect the
modules in the subrack and carry alarm and control signaling between the
reciter and the other modules, as shown in Figure 1.5.
Figure 1.5 Intermodule communication paths
I C Current
Source
2
Speaker
User
Controls
Reciter
PA
PMU
Subrack Interconnect Board
PA
Fan
PMU
Fan
Control Panel
Microphone
I C
2
I C
2
I C
2
Fan Fan
Speaker
Mic
μP
μP
μP
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