Tait TB9300, Инструкция по установке и эксплуатации, Страница: 22 / 138

22 Description
TB9300 Installation and Operation Manual
© Tait Limited March 2016
1.7 Theory of Operation
The reciter receives RF signals from its RF input and sends RF from its RF
output to the PA, along with a PA key signal. The reciter also receives
signals from, and sends signals to, the system interface, the Ethernet
interface, and the front panel (see
Figure 1.4 ).
A system control bus interconnects the modules and carries alarm and
control signaling between the reciter and the other modules (refer to
“Intermodule Communications” on page 25 for more details).
The Ethernet interface carries voice over IP and also allows maintainer
access via a web browser.
Figure 1.4 Base station high-level diagram
Reciter PMU PA
RF To
Antenna
RF From
Antenna
External
Reference
Frequency
AC Input
DC Input
28VDC
System Control Bus
RF + PA Key
System Input
and Output
Ethernet Interface
to Network
Front
Panel