Comtech EF Data DT-4500-A Series - Manual (Page 61)

DT-4500-A Series Downconverters Revision 1
Rear Panel Connectors MN-DT4500A
3–11
3.3.2 Cable Connections – Redundant System Operation
In subsystems where a redundant downconverter configuration is used, the backup
downconverter has an Input/Output Module (IOM-XX) and the online downconverters have
Receive Switch Modules (RSM-XX), which switch to the backup downconverter when a fault is
detected. See Appendix B. REDUNDANT SYSTEM OPERATION for a discussion of the
downconverter’s use in redundant applications.