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Sms-451t front panel, Sms-451t esc “1, 5 sms-451t front panel – Comtech EF Data SMS-451 User Manual

Page 51

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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.