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Description
TB9400 Installation and Operation Manual
© Tait Limited March 2015
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 PA sends an RF feedback
signal to the reciter for linearization and power control purposes. The
reciter also receives signals from, and sends signals to, the system
interface, the Ethernet interface, and the front panel (see
output to the PA, along with a PA key signal. The PA sends an RF feedback
signal to the reciter for linearization and power control purposes. The
reciter also receives signals from, and sends signals to, the system
interface, the Ethernet interface, and the front panel (see
).
A system control bus interconnects the modules and carries alarm and
control signaling between the reciter and the other modules.
control signaling between the reciter and the other modules.
The Ethernet interface carries voice over IP and also allows maintainer
access via a web browser.
access via a web browser.
Figure 1.4
Base station high-level diagram
Reciter
PMU
PA
RF To
Antenna
RF From
Antenna
1PPS
External
Reference
Frequency
Frequency
AC Input
DC Input
28VDC
System Control Bus
RF + PA Key
RF Feedback
System Input
and Output
and Output
Ethernet Interface
to Network
to Network
Front
Panel