C-Band Transceiver Revision 1
Redundant Systems MN/CSAT5060.IOM
5–6
5.2 RSU-5060 Operation
The RSU-5060 is designed to provide single-point control for both the Tx and Rx transfer
switches (Waveguide Switches). In addition, the RSU-5060 provides the customer with
a single interface connection to the M&C system. Through this interface the customer
can access and control all configuration, monitor and faults status parameters of both
CSAT’s. The RSU-5060 is a ‘smart box’; the unit contains a microcontroller running
algorithms to process status and command information from the two CSAT’s and control
the Tx and Rx waveguide switches accordingly. A functional block diagram of the RSU-
5060 is shown in Figure 5-2.
Figure 5-2 RSU-5060 Functional Block Diagram
RS485 Tx +
RS485
Tx
-
RS485 Rx+
RS485 Rx-
RS485 Tx +
RS485
Tx
-
RS485 Rx+
RS485 Rx-
RS485
Tx
+
RS485
Tx
-
RS485 Rx+
RS485 Rx-
Micro
Controller
A AUXCOM Td
A AUXCOM Rd
B AUXCOM Td
B AUXCOM Rd
RS232 line
Drives and
Receivers
&
Multiplexer
Td
Rd
a
b
c
A FAULT N.O.
REDUNDANCY A*
POSITION A*
REDUND_FLT*
B FAULT N.O.
REDUNDANCY B*
POSITION B*
REDUND_FLT*
B SELECT*
CSAT A
+24 VDC
CSAT B
+24 VDC
Rx
TRANSFER
SWITCH
Tx
TRANSFER
SWITCH
POS
A CMD
POS
B CMD
POS
A IND
POS B IND
POS A CMD
POS
B CMD
POS A IND
POS B IND
Signal
Conditioning
RED AUTO/MAN
SWITCH CMD
A ONLINE CLOSED
B ONLINE CLOSED
A FAULT OPEN
B FAULT OPEN
Customer
Monitor
&
Control
RSU-5060
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