Comtech CDM-625A Advanced Satellite Modem

Description

The Comtech CDM-625A Advanced Satellite Modem builds on Comtech EF Data’s legacy of providing the most efficient and reliable satellite modems. The Comtech CDM-625A Advanced Satellite Modem supports VersaFEC, Forward Error Correction (FEC), the revolutionary DoubleTalk, Carrier-in-Carrier, bandwidth compression, additional TX roll offs, and sophisticated packet processing capabilities.

The Comtech CDM-625A Advanced Satellite Modem builds on our legacy of providing the most efficient and reliable satellite modems. With support for VersaFEC® Forward Error Correction (FEC), DoubleTalk Carrier-in-Carrier bandwidth compression, additional rolloffs and advanced packet processing, the CDM-625A provides significant savings under all conditions. This combination of advanced technologies enables multi-dimensional optimization, allowing satellite communications users to:

• Minimize operating expenses (OPEX)
• Maximize throughput without using additional transponder resources
• Maximize availability (margin) without using additional transponder resources
• Minimize capital expenses (CAPEX) by allowing a smaller BUC/HPA and/or antenna
• Or, a combination to meet specific business needs

Comtech CDM-625A Advanced Satellite Modem Features:

• DoubleTalk Carrier-in-Carrier bandwidth compression
• Carrier-in-Carrier Automatic Power Control
• VersaFEC-2 High Performance LDPC with Adaptive Coding and Modulation (ACM), Short Block and Long Block
• VersaFEC FEC with Adaptive Coding and Modulation (ACM)
• 5%, 10%, 15%, 20%, 25% and 35% Filter Roll off
• Packet Processor with header compression, payload compression, advanced Quality of Service (QoS) and Managed Switch Mode with VLAN support
• Integrated 4-port managed Ethernet switch with VLAN and QoS
• Jumbo frame support
• Dual Band Capability: 70/140 MHz and extended L-Band (950 – 2250 MHz) in same unit
• Data Rate: 18 kbps to 25 Mbps
• Symbol Rate: 18 ksps to 12.5 Msps
• Modulation: BPSK, QPSK/OQPSK, 8PSK/8-QAM/8-ARY, 16-QAM/16-ARY, 32-ARY
• FEC: Viterbi, Sequential, Concatenated Reed Solomon, TCM, Turbo Product Code (TPC) (IESS-315 Compliant), LDPC Code, VersaFEC (low-latency LDPC) and VersaFEC-2 (high performance LDPC)
• L-Band TX: 10 MHz reference for BUC, FSK communications and optional BUC power supply
• L-Band RX: 10 MHz reference and LNB power supply
• L-Band: Advanced FSK for LPOD M&C
• 1:1 and 1:10 redundancy switches available
• Backwards compatible with CDM-625
• Environmentally Resistant version (CDMER-625A) available

Comtech EF Data Corporation is a leading supplier of satellite bandwidth and link optimisation. Our high-performance satellite communications infrastructure solutions feature groundbreaking efficiency, robust intelligence and unparalleled horsepower. Commercial and government users around the world utilise our solution suite to reduce OPEX/CAPEX and to increase throughput for the most demanding fixed and mobile networks.