Premier Mounts CDM-600 specifications New in this Release

CDM-600 Satellite Modem	Revision 7
Introduction	MN/CDM600.IOM

1.5New in this Release

Revision 7 of this document includes information on the the following new features:

*Low-Density Parity Check (LDPC) Codec (available in Firmware Version 1.6.0 onwards). This is the latest form of Forward Error Correction, giving enhanced performance when compared to some TPC modes. This is a plug-in module that also includes all of the 2nd Generation TPC functionality. This new codec is supported in in Firmware Version 1.6.0 onwards. Please see Chapter 7 for more details.

*8-QAM – a new modulation scheme included specifically to replace 8-PSK when LDPC is used. It is only available when the LDPC codec is installed, and is supported in Firmware Version 1.6.0 onwards. Please see Chapter 7 for more details.

*A higher-throughput ESC type, called ESC++ . This new mode permits an async ESC rate of up 38.4 kbaud at a user data rate of 512 kbps (up to 4.8 kbaud at 64 kbps), while simultaneously permitting AUPC operation. This naturally uses more overhead than previous modes, although the percentage overhead reduces significantly at higher data rates. This is now a standard feature in Firmware Version 2.0.1 onwards. Please see Chapter 13 for more details.

*Extended IF frequency range (50 - 90 MHz and 100 - 180 MHz) for modems manufactured after February 2005. A new modem card has been developed for this wider IF bandwidth, which replaces the previous design. CDM-600 modems fitted with this new card are identified in the opening screen as CDM-600(E),where the ‘E’ refers to Extended IF range. In addition to the new card, the modem requires Firmware Version 2.0.1 or higher.

*A Power-On, Carrier-Off (POCO) feature has been added to the Factory Menu.

*When this option is set to OFF, the CDM-600 will power-up with the Tx Carrier in the last known state. (For example, if the Tx Carrier was ON, and then the power is cycled, the Tx Carrier will be turned ON once more.)

NOTE THAT THIS IS THE DEFAULT OPERATING MODE OF THE CDM-600, AND IT IS RECOMMENDED THAT THE USER LEAVE THE UNIT CONFIGURED IN THIS WAY.

*When this option is set to ON, the CDM-600 will always power-up with the Tx Carrier in the OFF state. The user must then, either through the front panel, or the remote control port, turn the Carrier ON in order for the unit to transmit a carrier.

Consult the factory for details of how to access the Factory Menu.

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