Specifications

SDM-300L3 Satellite Modem Revision 0
Clocking Options MN/SDM300L3.IOM
6–8
CLOCK
RECOVERY
CLOCK
RECOVERY
CLOCK
RECOVERY
TXCLOCK = TX TERRESTRIAL
TXCLOCK = TX TERRESTRIAL
SEND DATA
SEND DATA
CLOCK
CLOCK
IN T ER N A L
OSCILLATOR
INTERNAL
OSCILLATOR
SATELLITE
SATELLITE
DATA
CLOCK
BUFFER
BUFFER
DATA
RX CLOCK = INSERT
RX CLOCK = INSERT
MASTER
BOP
DTS
DTS
NOTE: FOR MASTER/SLAVE
OPERATION IN G.70:
SELECT TERRESTRIAL
EQUIPMENT SLAVE-SIDE.
THE MODEM SETTINGS
REMAIN AS MASTER/MAST
THE USER EQUIPMENT WI
L
NEED TO RECOVER THE
TIMING FROM THE RECEIV
E
DATA IF A MASTER/SLAVE
CLOCK ARRANGEMENT IS
DESIRED.
BOP
CLOCK
RECOVERY
CLOCK
RECOVERY
RD
RD
IDO
IDO
IDO
IDO
IDI
IDI
IDI
IDI
SD
SD
DDI
DDI
DDI
DDI
DDO
DDO
DDO
SD
DROP
MUX
DDO
MA
S
TER
TRANSMIT
RECEIVE
EXTERNAL REF.
EXTERNAL REF.
TX
TERRESTRIAL
CLOCK
RECOVERY
INSERT
INSERT
TX
TERRESTRIAL
RECEIVE
TRANSMIT
INSERT
MUX
CLOCK
INSERT
MUX
DROP
MUX
FIGURE 6-5. D&I G.703 MASTER/MASTER CLOCKING DIAGRAM