L-Band Uplink/Downlink Cable Connections - Comtech EF Data CRS-280L Installation And Operation Manual

Cable connections are defined as follows:
L-Band Modem Connection
Redundant Modem
Prime Modem #1
Prime Modem #2
Prime Modem #3
Prime Modem #4
Prime Modem #5
Prime Modem #6
Prime Modem #7
Prime Modem #8
Prime Modem #9
Prime Modem #10

4.3.5 L-Band Uplink/Downlink Cable Connections

The CRS-280L is not designed to convey DCpower to external equipment such as
LNBs or BUCs. Do not apply DC power to the L-Band input and output (Type 'N')
ports of the switch.
CEFD recommends that connections to uplink and downlink equipment be made after all other
system cabling and configuration is complete. Cabling to and from the CRS-280L uplink and
downlink ports is dependant on the system configuration and the uplink/downlink equipment used.
For additional information, refer to the uplink/downlink equipment documentation.
Cables and Connections
CRS-280L Connection
TX Backup (TX In)
TX Output ↔
RX Input ↔ RX Backup (RX Out)
TX 1 (TX In)
TX Output ↔
RX 1 (RX Out)
RX Input ↔
TX Output ↔ TX 2 (TX In)
RX Input ↔ RX 2 (RX Out)
TX 3 (TX In)
TX Output ↔
RX Input ↔ RX 3 (RX Out)
TX Output ↔ TX 4 (TX In)
RX 4 (RX Out)
RX Input ↔
TX 5 (TX In)
TX Output ↔
RX Input ↔ RX 5 (RX Out)
TX 6 (TX In)
TX Output ↔
RX 6 (RX Out)
RX Input ↔
TX Output ↔ TX 7 (TX In)
RX Input ↔ RX 7 (RX Out)
TX 8 (TX In)
TX Output ↔
RX Input ↔ RX 8 (RX Out)
TX Output ↔ TX 9 (TX In)
RX 9 (RX Out)
RX Input ↔
TX 10 (TX In)
TX Output ↔
RX Input ↔ RX 10 (RX Out)
4–12
CRS-280/280-L IF Switch for 1:N Redundancy
Revision -
Comments
MN-CRS-280/280L