Premier Mounts CDM-600 Config RX EbNo, Config Clocks TX Clock, Clocking TX-CLOCK

CDM-600 Satellite Modem	Revision 7
Front Panel Operation	MN/CDM600.IOM

CONFIG: RX: EbNo

RECEIVE EbNo ALARM POINT = 02.0 dB

Select the digit of the Alarm point to be edited using the [←] [→] arrow keys. Edit the value of the digit using the [↑] [↓] arrow keys. Press ENTER.

The range of values is from 00.1 to 16.0 dB. The user may select a value here, and if the Eb/No falls below this value, a receive traffic fault will be generated.

6.3.1.5CONFIG: CLOCKS

CLOCKING: TX-CLOCK RX-BUFFER/CLOCK

EXT-BASEBAND-CLK EXT-FREQ-REF INT-REF

The sub-branches available are:

CONFIG: CLOCKS: TX CLOCK

TRANSMIT CLOCK = INTERNAL(SCT) (INT(SCT),TX-TERR(TT),RX-LOOP,EXT-CLK)

Use the [↑] [↓] arrow keys to select from the choices shown in parentheses, then press

ENTER.

INTERNAL (SCT)	Indicates that the unit will supply a clock to the DTE, which is derived from its
	internal high-stability source. This is the required setting when the TX interface type
	is Audio.
TX-TERRESTRIAL	Indicates that the unit expects to receive a clock from the DTE, to which the unit
(TT)	can phase-lock its internal circuits. If no clock is detected the modem will substitute
	its internal clock and generate an alarm. This is the required setting when the
	modem’s interface type is G.703.
RX-LOOP	Will allow the modem’s internal clock to be phase locked to the RX buffer clock
	source. This output clock is Send Timing. Choosing RX-LOOP will not automatically
	select RX-SAT as the buffer clock source. This allows for increased flexibility for
	modem clock selection. Normally the user will select RX-SAT but the other choices
	also are available.
	Example: The user has an available high stability 10 MHz clock source but the end
	equipment will only accept a clock at the information data rate. Selecting TX Clock
	= RX-LOOP and RX buffer clock as EXT-REF will provide receive timing and send
	timing to the end equipment that is sourced from the 10 MHz reference.
EXTERNAL CLOCK	Indicates that an unbalanced high-stability source is expected at the J9 BNC
	connector, or a balanced version at the P3A connector. The frequency must match
	that programmed in the CONFIG: CLOCKS, EXTERNAL-BASEBAND-CLOCK
	menu, and must be equal to the TX data rate.

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