Comtech EF Data SDM-300A - Manual (Page 226)

SDM-300A Satellite Modem Revision 6
Clocking Options MN/SDM300A.IOM
7-6
TX CLOCK + TX T ERRES TRIAL
TX CLOC K = TX TERRE STRIAL
TRANSM IT
TX
TERRESTRIAL
TRANSM IT
INTERNAL
O SCILLATO R
INTERNAL
OSCILLATOR
HIGH
STABILITY
OSCILLATOR
HIG H
STABILITY
O SCILLATO R
SATE LLITE
SATELLITE
CLOCK
RECOVERY
CLOCK
RECOVERY
BUFFER
RD
RD
BUF FER CLO CK = TX TERRESTRIA L
BUFFER CLO CK = RX (S ATELLIT E CLOCK)
M ASTER
BO P
BO P
DTS
DTS
NOTE : TE RRESTRIAL
EQ UIPM ENT MUS T
RECO V ER THE CLO CK
FROM R ECEIV ED DATA.
RECEIVE
RECEIVE
SD DATA
CLOCK
SD
SLAVE
TX
TERRESTRIAL
TX
TERRESTRIAL
CLOCK
DATA
CLO CK
RECO VERY
DATA
CLO CK
BUFFER
CLOCK
RECOVERY
Figure 7-4. IDR/IBS G.703 Master/Slave Clocking Diagram