Specifications

SDM-300L3 Satellite Modem Revision 0

Front Panel Operation MN/SDM300L3.IOM

4–26

4.6.1.3 FUNCTION SELECT: CONFIGURATION INTERFACE

CONFIGURATION

INTERFACE

Press <ENTER > to review or edit the following sub-menus.

FUNCTION SELECT: CONFIGURATION: INTERFACE:

TX CLOCK SOURCE

TX TERRESTRIAL

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 is

also the fallback clock).

Note: When loop timing is enabled, SCT (LOOP) is displayed

instead of SCT (INTERNAL).

EXT. CLOCK/DATA CLOCK Sets the TX clock to operate from the external reference clock (Ext

Clock).

TX Data Rate and Ext Clock frequency shall match or unless the

ASLT option is installed. The correct frequency must be

programmed into EXT-CLK FREQ.

Upon entry, the current transmit clock setting is displayed. Press [↑] or [↓] to make the

selection. Press <ENTER> to execute the change.