Unpacking and Installation, TWTA Octagon CPU
MNC-0300-003 14 of 22 Revision N
Redundancy Interface (Waveguide Switch) Connector (J6)
Provides control and status indication for Waveguide Switch
position. Refer to Table 3 and Figure 8.
Passes RF Inhibit command during the switching operation or
Waveguide Switch failure.
Sends and receives Summary fault from primary amplifier in
redundant system (Automatic Mode Only).
Table 3, Redundancy Interface (Waveguide Switch) Connector Pinouts
Pin Signal Function
A Sum Fault Ind. IN When in backup mode, opens when other amp in
redundant system faults. (Contact closure only) Unit
switches online
B Sum Fault Ind. OUT When online, opens during fault. Backup amp in
redundant system switches online. (Contact closure
only)
C W/G Switch Inhibit Open during transition from one position to another,
W/G switch fails, or is not installed.
D W/G Pos A Indicator Grounded when Waveguide Switch is set to Position
A.
E W/G Pos B Indicator Grounded when Waveguide Switch is set to Position
B.
F GND Ground
G Switch to A Control signal to set Waveguide Switch to Position
A.
H Switch to B Control signal to set Waveguide Switch to Position
B.
J GND Ground
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