Comtech EF Data KPA-020IN, Инструкция по установке и эксплуатации

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5-1
Chapter 5. Redundant
Configuration
5.1 General
All Comtech EF Data KPAs are designed to operate in both stand-alone and redundant
configurations. Every KPA contains the circuitry and logic necessary to perform all the functions
of a backup controller in both a 1:1 and 1:2 configuration. This includes the ability to monitor and
control up to two RF waveguide switch assemblies. In addition, the KPA has been designed to
automatically detect whether it is in a stand-alone or redundancy system. These features greatly
simplify redundancy configurations from both the cost and operational complexity standpoint.
5.2 Redundancy Operation
Refer to Figure 2-1 for a full installation diagram of a typical redundant system.
Normal Operation Incoming RF signals are routed through the primary online SSPA (1:1), or SSPA (1:2) to the
system output(s) by the combination waveguide/coax switch(es).
Controller Mode With the backup SSPA in the controller mode, it monitors the online unit(s) for faults.
Fault When a fault occurs in an online unit, the backup SSPA automatically configures itself with
the settings of the faulted online unit. (These now active settings also incorporated any user
defined offsets that may have been programmed into the backup unit.)
Waveguide
The position of the waveguide/coax switch also is automatically changes to oute the signal
through the backup unit, thereby minimizing the loss of traffic.
Two control cable assemblies are required to setup either the 1:1 or a 1:2 system. Other RF
coaxial cables and waveguides are required .