Theory Of Operation - Tait TB9400 Installation And Operation Manual

1.7

Theory of Operation

Figure 1.4 Base station high-level diagram
AC Input
PMU
DC Input
A receive-only base station has a receiver instead of a reciter,
and does not have a PA.
TB9400 Installation and Operation Manual
© Tait International Limited November 2019
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
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 28
The Ethernet interface carries voice over IP and also allows maintainer
access via a web browser.
RF To
Antenna
RF + PA Key
28VDC
PA
RF Feedback
System Control Bus
for more details).
External
RF From
Reference
Antenna
1PPS Frequency
Reciter
Front
Panel
Figure 1.4).
System Input
and Output
Ethernet Interface
to Network
Description 25