Comtech EF Data CDM-625 - Manual (Page 45)

CDM-625 Advanced Satellite Modem Revision 15
Introduction MN-CDM625
1–9
1.3.8 Supporting Hardware and Software
Redundancy Support: Comtech EF Data provides redundant operations support to the CDM-625
as follows:
• For 1:1 redundancy applications, via its low-cost external CRS-170A L-Band and CRS-180
70/140 MHz IF 1:1 Redundancy Switches.
• For M:N redundancy (hub) applications, via its external CRS-300 1:10 Redundancy Switch or
the CRS-500 M:N Redundancy System.
Transceiver Support: The unit is a companion product for Comtech EF Data’s CSAT-5060 and
KST-2000A/B RF Transceivers. The modem incorporates a Frequency Shift-keying (FSK) serial link
that can be activated on the Rx-IF port for the purpose of communicating with a transceiver, if
connected. In this manner, you may configure, monitor and control the transceiver using either
the unit’s front panel display and keypad or any of its remote control interfaces. The EDMAC
channel may also be used to convey M&C data to a transceiver at the distant end of a satellite
link, if it is connected to a CDM-625.
BUC Support: The unit incorporates an FSK serial link that can be activated on the Tx-IF port for
the purpose of communicating with an FSK-capable “smart” BUC. This link is designed to be
compatible with the Global VSAT Forum/ND SatCom specification. In this manner, you may
configure, monitor and control the BUC using either the unit’s front panel display and keypad or
any of its remote control interfaces.
Additionally, Comtech EF Data provides for an "Advanced FSK" for use with its LPOD BUCs, re-
using the existing FSK channel to pass additional "proprietary" commands to expand front panel
user control. The EDMAC channel can be used to convey M&C interface to a BUC at the distant
end of a satellite link, if it is connected to a CDM-625.