Figure 3-31. D&I G.703 Master/Master Clocking Diagram - Comtech EF Data SLM-3650 Installation And Operation Manual

SLM-3650 Satellite Modem
Operation
DDI
SD
DDO
DTS
BOP
IDI
RD IDO
RX CLOCK = INSERT
DATA
CLOCK
RECOVERY
CLOCK
SATELLITE
RECEIVE
TRANSMIT
INTERNAL
OSCILLATOR
CLOCK
TXCLOCK = TX TERRESTRIAL
MASTER
Figure 3-31. D&I G.703 Master/Master Clocking Diagram
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TXCLOCK = TX TERRESTRIAL
DDI
SD
SEND DATA
DROP
MUX
DDO
CLOCK
RECOVERY
TX
TERRESTRIAL
TRANSMIT
RECEIVE
EXTERNAL REF.
INSERT
IDI
CLOCK
RECOVERY
INSERT
BUFFER
MUX
IDO
RX CLOCK = INSERT
MASTER
INSERT
BUFFER
MUX
INSERT
CLOCK
RECOVERY
EXTERNAL REF.
TX
TERRESTRIAL
CLOCK
RECOVERY
DDO
DROP
SEND DATA
MUX
DDI
3–93
CLOCK
INTERNAL
OSCILLATOR
SATELLITE
CLOCK
CLOCK
RECOVERY
DATA
RD
IDO IDO
IDI IDI
BOP
DTS
DDO
DDI SD
Revision 3
MN/SLM3650.IOM
NOTE: FOR MASTER/SLAVE
OPERATION IN G.703:
SELECT TERRESTRIAL
EQUIPMENT SLAVE-SIDE.
THE MODEM SETTINGS
REMAIN AS MASTER/MASTER.
THE USER EQUIPMENT WILL
NEED TO RECOVER THE
TIMING FROM THE RECEIVE
DATA IF A MASTER/SLAVE
CLOCK ARRANGEMENT IS
DESIRED.