Comtech EF Data SDM-300A - Manual (Page 224)

SDM-300A Satellite Modem Revision 6
Clocking Options MN/SDM300A.IOM
7-4
TXCLOCK = TX TERRESTRIAL
SLAVE
TXCLOCK = TX TERRESTRIAL
TRANSMIT
TRANSMIT
INTERNAL
OSCILLATOR
INTERNAL
OSCILLATOR
HIGH
STABILITY
OSCILLATION
HIGH
STABILITY
OSCILLATION
SATELLITE
SATELLITE
CLOCK
RECOVERY
DATA
CLOCK
BUFFER
BUFFER
RD
RD
RT
RT
BUFFER CLOCK = TX TERRESTRIAL
BUFFER CLOCK = RX (SATELLITE CLOCK)
MASTER
BOP
BOP
DTS
DTS
EXT REF
EXT REF
RECEIVE
SD
SD
TT
TT
ST
ST
TX
TERRESTRIAL
RECEIVE
DATA
CLOCK
(LOOP)
TIMING
SELECTED)
CLOCK
DATA
Figure 7-2. EIA-422, EIA-232, or V.35 Master/Slave Clocking Diagram