Specifications

Operations Manual, Redundant System Controllers 209351 REV B 45
4.2 Operation of 1:2 System with RCP2-1200
Figure 4-5 shows the basic block diagram of a 1:2 redundant system. In normal oper-
ation amplifiers 1 and 3 are considered the on-line amplifiers while amplifier 2 is in
standby. If a fault conditions occurs in either one of the on-line amplifiers, the standby
unit can be switched into the circuit by moving the transfer switches on the input and
output side of the amplifiers. The amplifiers could be Low Noise Amplifiers (LNAs),
Low Noise Block Converters (LNBs), Solid State Power Amplifiers (SSPA), or Solid
State Power Amplifiers with Block Up Converters (SSPBs).
A priority can be assigned to either the Polarity 1 or Polarity 2 switch path in the event
that both online amplifiers were to fail.
4.2.1 LNA / LNB 1:2 Redundant System Operation
This section covers the operation of the RCP2-1200 controller with a Paradise Data-
com LNA or LNB Redundant System. A typical LNA / LNB redundant system consists
of an outdoor plate assembly, the RCP2-1200 indoor controller, and an interconnecting
control cable. Figure 4-6 shows the major components of a typical 1:2 LNA system.
Figure 4-5: Block Diagram, 1:2 Redundant System