Config: Rx  Symb (Ip-Acm Mode Only) - Comtech EF Data CDM-625A Installation And Operation Manual

Advanced satellite modem (18 kbps – 25 mbps)

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CDM-625A Advanced Satellite Modem

Front Panel Operation

Note that, in QDI (Quad D&I) mode, these data rates are read-only! The data rate is the sum of

the tributary rates for all ports, and you must the data rate via the QDI menu.

On the bottom line – To edit the Data Invert or Clock Invert operation: For either, use the

arrow keys to select On or Off, and then press ENTER.

Note that, in QDI (Quad D&I) or Framed QDI mode, data input is fixed at OFF.

CONFIG: Rx  Rx Data  Rx Sub-Mux

Rx Sub-Mux = Off (Off, On)

Ratio = 1/9 (IP/Synchronous)

arrow keys to select the desired ratio, and then press ENTER. There are a total of

34 ratio options available:

6.2.1.4.6 CONFIG: Rx  Symb (IP-ACM Mode Only)

Appendix M. ADAPTIVE CODING AND MODULATION (ACM)

VersaFEC ACM requires the appropriate FAST code for the maximum operating

symbol rate.

RxSymbolRate = 01000.000 ksps (ACM Mode)

Data Invert=Off Clock Invert=Off ()

Note that the use of IP-ACM is a fundamental departure from the way you would typically

configure the modem. When IP-ACM mode is active, the CONFIG: Rx menu changes the Data

option to Symb.

On the top line – To edit the Rx Symbol Rate, use the

and then use the

asymmetric operation is supported – transmit and receive symbol rates do not have to be equal.

On the bottom line – To set the Data Invert or Clock Invert operation: For either, use the

arrow keys to select On or Off, and then press ENTER.

Note that, in QDI (Quad D&I) or Framed QDI mode, data input is fixed at OFF.

arrow keys to change that digit. Press ENTER when done. Note that

arrow keys to select a digit to edit,

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