Comtech EF Data SDM-650B Specifikace stáhnout pdf (Strana 124)

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SDM-300L3 Satellite Modem Revision 0

Front Panel Operation MN/SDM300L3.IOM

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FUNCTION SELECT: CONFIGURATION: INTERFACE:

BUFFER CLOCK

RX (SATELLITE)

Programs the interface buffer output clock to one of the following modes:

RX (SATELLITE) Sets the output buffer clock to the satellite clock.

(Bypasses the buffer.)

SCT (INTERNAL)

Sets the buffer clock to operate from the modem internal clock. This is also the

fallback clock

EXT. CLOCK Sets this clock source to the external clock.

TX TERRESTRIAL Sets the buffer output clock to recover timing from the incoming TX data clock.

INSERT CLOCK Selects the recovered clock from the insert send data input received from the

terrestrial equipment.

Upon entry, the current setting of the plesiochronous buffer clock is displayed. Press [↑]

or [↓] to make the selection. Press <ENTER> to execute the change.

FUNCTION SELECT: CONFIGURATION: INTERFACE:

RX CLOCK PHASE

NORMAL

Programs the RX clock phase to Normal or Inverted.

Upon entry, the current status of the RX Clock is displayed. Press [↑] or [↓] to make the

selection. Press <ENTER> to execute the change.

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