Comtech EF Data CRS-120 - Manual (Page 35)

1:1 Redundancy Switch Revision 3
Remote Control Operation MN/CRS120.IOM
4–3
the Main menu if 1:1 operation is enabled and the modulator cannot sense A or B status.
This usually indicates the cable is disconnected.
Config: AUX: 1:1 Mode: Switching
Selecting Auto-(On) places the 1:1 switching in the automatic mode. The Manual-(Off)
mode disables automatic operation.
Config: AUX: 1:1 Mode: Force
This menu allows forced switchover.
4.3 1:1 Remote Control Operation
From the front panel of the Online unit, access the Main menu, then select:
Config: Remote Control menu to set up the modulator for operation via the
remote port. Also refer to the Remote Operation section for commands and responses.
Setup for remote operation is as follows:
If RS485 was selected, the user will be further prompted:
This menu allows selection of a Modulator address and Switch address. The Switch address is
used in conjunction with CRS-120 IF Switch in 1:1 applications where two modulators share the
switch controller function and drive the IF switch to place the A modulator or B modulator in the
Online or Standby positions.
Operationally, each modulator has a unique modulator address but their share a common switch
address.
1:1 Mode Switching:
Auto-(On) Manual-(Off) ( E)
Press ENT to Force Modem to Standby
(1:1 Only)
RS485 Address:
Modulator Switch