Operating instructions

Introduction RCS20 M:N Redundancy Switch
1-2 TM056 - Rev. 2.3
troubleshooting, this is not a service or maintenance manual. Also, the user should be fully familiar
with the operation of the individual Satellite Modems, Modulators and/or Demodulators that will be
connected to the Switch. Throughout this manual any reference to the RCS20 indicates the
combination of the RCU20, IFS20 and the DDS20. Refer to Figure 1-1 for a pictorial representation
of the RCU20 front panel, Figure 1-2 for a Functional Block Diagram of the RCS20 System and
Figure 2-7 for an interconnection diagram of the complete system including the cabling
requirements.
1.4 Channel Definitions
The RCS20 organizes the modems connected to the switch according to satellite communications
channels. These channels are labeled on the DDS20 and IFS20 panels, and are defined as follows:
Channel 0 - Backup 1
Channel 1 - Modem 1
Channel 2 - Modem 2
Channel 3 - Modem 3
Channel 4 - Modem 4
Channel 5 - Modem 5
Channel 6 - Modem 6
Channel 7 - Modem 7
Channel 8 - Modem 8
Channel 9 - Modem 9/Backup 2