Comtech EF Data SMS-758 User Manual
Page 98
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Theory of Operation
SMS-758 Modem Protection Switch
4–38
MN/SMS758 Rev. 3
DATA PATH
SELECTION
TRANSMIT ESC
TRANSMIT DATA
RECEIVE DATA
RECEIVE ESC
RECEIVE EXTERNAL REFERENCE CLOCK
MOD AND DEMOD FAULTS
DECODER
INSTRUCTION
BACKUP
DATA I/O
DATA SWITCH
MOTHERBOARD
MOD RELAYS
DEMOD RELAYS
Figure 4-13. Backup 2:N IDR Interface Switch (1879)
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