Comtech EF Data SMS-451 - Manual (Page 51)

SMS-451 Satellite Switch Revision 0
Operation MN/SMS451.IOM
3-5
3.5 SMS-451T Front Panel
IMPORTANT
Operation of the switch is controlled by the SMS-451A switch via the remote
control connector. There must be an SMS-451A Switch in the system to
operate the SMS-451T switch. The SMS-451T Switch tracks the SMS-451A
Switch for all switching functions. The primary function of the SMS-451T
Switch is to add ESC switching capabilities to the SMS-451A Switch
Power supply operation for ESC 1 and ESC 2 are indicated by the PWR 1 and PWR 2
green LEDs respectively (Figure 3-2). There are no other indicators on the switch.
SWITCH STATUS
PWR1 PWR2
PWR1
ESC 1
ESC 2
PWR2
Figure 3-2. SMS-451T Panel Panel
3.5.1 SMS-451T ESC “1”
ESC “1” services the Intermediate Data Rate (IDR) channels with octet support along
with backward allarms and audio input and output support.
All signals for the ESC “1” are switched on the AS/1862 board.