Comtech EF Data HPCST-5000 - Manual (Page 28)

Introduction High-Power TWTA Satellite Terminals
1–12 Rev. 1
1.2.5 Redundant Switch Unit (RSU)
The RSU-503L (Figure 1-9) is an all-weather unit that provides for primary and backup
operation as a communications terminal.
The RSU is designed for mounting on either the antenna or support pole.
The RSU controls the switching from primary to backup service in a 1:1 redundant
configuration.
For information on the RSU-503L, refer to the RSU-503 Redundancy Switch Unit
Installation and Operation Manual.
Figure 1-9. RSU-503L