Comtech EF Data CDM-840 User Manual
Page 177
CDM-840 Remote Router
Revision 2
Appendix A
MN-CDM840
A–3
A.2
Adaptive Coding and Modulation / Variable Coding and Modulation
(ACM/VCM)
The VersaFEC® Adaptive Coding and Modulation (ACM) feature is a patents-pending technology
owned and developed by Comtech EF Data and CEFD sister division Comtech AHA Corp. ACM
turns fade margin into increased link capacity by automatically adapting the modulation type
and FEC code rate to give highest possible throughput. ACM maximizes throughput regardless of
link conditions (noise or other impairments, clear sky, rain fade, etc).
Outbound ACM operation is available in the CDM-800 Gateway Router via the CTOG-250
Comtech Traffic Optimization Gateway, and ACM operation is available in the CDM-840 /
ODM/R-840 Remote Routers and CDD-880 Multi Receiver Routers.
• Chapter 6. ETHERNET-BASED REMOTE PRODUCT MANAGEMENT in this manual
• Chapter 6. ETHERNET-BASED REMOTE PRODUCT MANAGEMENT in the
Comtech EF Data ODM-840 Outdoor Remote Router / ODMR-840 Reduced
Form Factor Outdoor Remote Router Installation and Operation Manual (CEFD
P/N MN-ODM840)
• Chapter 7. ETHERNET-BASED REMOTE PRODUCT MANAGEMENT and
Appendix E. OUTBOUND ACM (ADAPTIVE CODING
AND
MODULATION) in the
Comtech EF Data CTOG-250 Comtech Traffic Optimization Gateway Installation and
Operation Manual (CEFD P/N MN-CTOG250)
• Chapter 6. ETHERNET-BASED REMOTE PRODUCT MANAGEMENT in the Comtech
EF Data CDD-880 Multi Receiver Router Installation and Operation Manual (CEFD
P/N MN-CDD880)