Comtech EF Data SDM-300A - Manual (Page 228)

SDM-300A Satellite Modem Revision 6
Clocking Options MN/SDM300A.IOM
7-8
C L O C K
R E C O V E R Y
C L O C K
R E C O V E R Y
C L O C K
R E C O V E R Y
T X C L O C K = T X T E R R E S T R IA L
T X C L O C K = T X T E R R E S T R IA L
S E N D D A TA
S E N D D A TA
C L O C K
C L O C K
IN T E R N A L
O S C I L L AT O R
IN T E R N A L
O S C I L L AT O R
S A T E L L IT E
S A T E L L IT E
D A TA
C L O C K
B U F F E R
B U F F E R
D A TA
RX CLO CK = INSERT
R X CLO CK = IN SERT
MASTER
BOP
DTS
D TS
N OTE : FOR M A STER/SLAV E
OPER ATION IN G.70:
SEL ECT TE RR ESTRIA L
EQU IPM EN T SL AVE -SID E.
TH E M OD EM SET TIN GS
R EM AIN A S M AST ER /MA ST
TH E U SER EQU IPM EN T W IL
N EED TO RE COV ER THE
TIM IN G F RO M T H E REC EIVE
D ATA IF A M A STE R/SLAVE
C LOC K AR R AN GE ME NT IS
D ESIR ED.
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
MASTER
TRANSMIT
RECEIVE
EXTERNAL REF.
EXTERNAL REF.
TX
TERRESTRIAL
CLOCK
RECOVERY
INSERT
INSERT
TX
TERRESTRIAL
RECEIVE
TRANSMIT
IN SERT
M U X
CLOCK
INSERT
MUX
DROP
MUX
Figure 7-5. D&I G.703 Master/Master Clocking Diagram