Comtech EF Data SMS-458B - Manual (Page 45)

SMS-458B Modem Protection Switch Revision 2
Operation MN/SMS458B.IOM
3–9
This menu displays the current prime modulators that are active in the system.
1. Press one of the [1] through [4] keys toggles the active status (ON/OFF)
of the corresponding modulator only.
2. Press [ENT] to load information into memory.
3.4.2.4 Active Prime Demodulators Menu
This menu displays the current prime demodulators that are active in the system.
1. Press one of the [1] through [4] keys toggles the active status of the
corresponding demodulator only.
2. Press [ENT] to load information into memory.
3.4.2.5 Active Backup Modulators Menu
This menu displays the current backup modulators that are active in the system.
1. Press the [1] key to toggle the active status of the backup modulator only.
2. Press [ENT] to load information into memory.
3.4.2.6 Active Backup Demodulators Menu
Note: The switch does not support the use of a second backup modem. When selecting
the active backup for mod, demod, and downlink, the active backup can only be number
1. Selecting backup number 2 to be active will have no effect on the system, except
causing backup faults to occur.
This menu displays the current backup demodulators that are active in the system.
1. Press the [1] key to toggle the active status of the backup demodulator only.
2. Press [ENT] to load information into memory.
3.4.2.7 Modem Addresses Menu
This menu displays the current addresses of the prime and backup modems.
Addresses of 1 through 255 are valid.
1. Enter a new address and press [ENT] to load the address into memory.
2. If no address is entered for an active modem, an M:N fault results.