Config: Tx) Clk (Clock Source); Config: Tx) Inv (Inversion Functions) - Comtech EF Data CDM-570A Installation And Operation Manual

70/140 mhz/l-band/reduced chassis depth/with optional high performance packet processor

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(CONFIG: Tx) Clk (Clock Source)

Tx Clocking Mode:

Ext Loop-Timed (◄ ►,ENT)

arrow keys to select Int, Ext, or Loop-Timed. Press ENTER.

Tx Inversion functions:

arrow keys to select Spectrum, Data, or Clock. Press ENTER. Typical for each

screen, use the

(CONFIG: Tx) Tx Inversion functions: Spectrum

Tx Spectrum:

(CONFIG: Tx) Tx Inversion functions: Data

Tx Data Sense:

(CONFIG: Tx) Tx Inversion functions: Clock

This feature is UNAVAILABLE when operating in CDM-570 Compatible Mode.

See Section 6.2 for further information.

Tx Clock Invert:

Front Panel Operation

CDM-570A/570AL Satellite Modem with Optional Packet Processor

(Internal) Indicates that the modem will supply a clock to the DTE, which is derived from its

internal frequency reference.

(External) Indicates that the modem expects to receive a clock from the DTE, to which the

modem can phase-lock its internal circuits. (If G.703 is selected as the Interface type, the

firmware will force the clock mode to External.)

Indicates that the transmit timing source should be the receive clock, from the direction of the

satellite. This is a useful mode, in that no external connection needs to be made in this mode. If

the demodulator loses lock, or if there is no receive signal present, the internal clock is

substituted. Note also that this mode will work even with asymmetric Rx and Tx data rates.

arrow keys to select Normal or Inverted. Press ENTER.

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