Product specifications

CDM-Qx Satellite Modem Revision 5
Introduction MN/CDMQx.IOM
1–8
Turbo Product Coding provides one of the best Forward Error Correction technologies
currently available, and is now offered with a sufficient range of code rates and
modulation types to optimize link performance under any conditions.
The second hardware option is the Internal Reference Stability. The high stability option
includes a 1 x 10
-7
10 MHz reference oscillator on the IF Backplane board, while the low
stability option has a 1 x 10
-6
10 MHz reference on the IF Backplane board. This option
must be configured in the factory at the time of order.
The third hardware option is the IF Impedance and Connectors. The IF may be
configured with either BNC female connectors at 75Ω impedance, BNC female
connectors at 50Ω impedance, or TNC female connectors at 50Ω impedance. This option
also must be configured in the factory at the time of order.
The fourth hardware option is the Quad E1 Data Interface Module. This gives the user
1 to 4 ports of E1, (each are D&I capable). These ports must use a synchronous E1
reference. This option also must be configured in the factory at the time of order.
1.4.5 Supporting Hardware and Software
The Modem incorporates an FSK serial link that can be activated on the RX-IF port for
purpose of communicating with an FSK capable Transceiver. In this manner, a user may
monitor, configure, and control the transceiver using the front panel display and keypad
of the modem or the modem’s remote control interface. The EDMAC channel can be
used to convey M&C interface to a transceiver at the distant end of a satellite link if it is
connected to a modem.