Mocomtech CDM-QX Fast Accessible Options, Fast System Theory, Implementation, Hardware Options

CDM-Qx Satellite Modem	Revision 5
Introduction	MN/CDMQx.IOM

1.4.1FAST Accessible Options

Comtech EF Data’s FAST system allows immediate implementation of different options through the user interface keypad. All FAST options are available through the basic platform unit.

1.4.2FAST System Theory

FAST is an enhancement feature available in Comtech EF Data products, enabling on- location upgrade of the operating feature set - in the rack - without removing a modem from the setup. When service requirements change, the operator can upgrade the topology of the modem to meet those requirements within minutes after confirmation by Comtech EF Data. This accelerated upgrade can be accomplished only because of FAST’s extensive use of programmable devices incorporating Comtech EF Data-proprietary signal processing techniques. These techniques allow the use of a unique access code to enable configuration of the available hardware. The access code can be purchased at any time from Comtech EF Data. Once obtained, the access code is loaded into the unit through the front panel keyboard or the rear remote port.

With the exclusive FAST technology, operators have maximum flexibility for enabling functions as they are required. FAST allows an operator to order a modem precisely tailored for the initial application.

1.4.3Implementation

FAST is factory-implemented in the modem at the time of order. Hardware options for basic modems can be ordered and installed either at the factory or in the field. The operator can select options that can be activated easily in the field, depending on the current hardware configuration of the product. The Activation Procedure is described in Appendix C.

1.4.4Hardware Options

There are four hardware options available.

There is the Comtech EF Data Turbo Product Codec (TPC), representing a very significant development in the area of FEC. It consists of a plug-in daughter card (SIMM module) that is field upgradeable. The TPC option provides data rate capability up to 20 Mbps, and code rates of:

•Rate 5/16 (BPSK)

•Rate 21/44 (BPSK, QPSK)

•Rate 3/4 (QPSK, 8-PSK, and 16-QAM)

•Rate 7/8 (QPSK, 8-PSK, and 16-QAM)

•Rate 17/18 (QPSK, 8-PSK)

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