Comtech EF Data SNM-1002 - Manual (Page 55)

SNM-1002 LinkSync
 Modem
Revision 2
Operation MN/SNM1002.OM
3–15
3.4.1.3 CONFIGURATION:INTERFACE
CONFIGURATION
INTERFACE
3.4.1.3.1 INTERFACE:TX CLOCK SOURCE
TX CLOCK SOURCE
SCT (INTERNAL)
Programs the clock source for the modem transmitter clock to the following
configurations:
TX TERRESTRIAL Sets the TX clock to recover timing from the incoming clock/data.
SCT (INTERNAL) Sets the TX clock to operate from the modem internal clock (this also is the
fallback clock).
Note: When loop timing is enabled, SCT (LOOP) is displayed instead of SCT
(INTERNAL).
RX (SATELLITE) Sets the RX clock to recover timing from the output clock/data.
EXT CLOCK Sets the TX clock to operate from the EXT-CLK clock. Transmit clock source
must be phase/frequency locked to the data that is being transmitted. The
correct frequency must be programmed into EXT-CLK FREQ.
Upon entry, the current TX clock source is displayed. Press [
↑ ] or [↓ ] to make the
selection. Press to execute the change.