Comtech CDM-425 Advanced Satellite Modem

Description

The Comtech CDM-425 Advanced Satellite Modem continues to build on our legacy of providing the most efficient and reliable satellite modems. It offers the most popular and powerful features of the Comtech CDM-625A, with a smaller footprint and less power. The Comtech CDM-425 Advanced Satellite Modem Forward Error Correction options comprise 18 VersaFEC® ModCods and 74 VersaFEC-2 ModCods. The Comtech CDM-425 Advanced Satellite Modem supports DoubleTalk, Carrier-in-Carrier, bandwidth compression, additional TX rolloffs, and sophisticated packet processing capabilities.

Comtech CDM-425 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 – similar performance to DVB-S2X with significantly lower latency.
• VersaFEC FEC with Adaptive Coding and Modulation (ACM), both standard and Ultra-Low Latency (ULL)
• 5%, 10%, 15%, 20%, 25% and 35% Transmit Filter Roll-off
• Optional 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, 8-QAM/8-ARY, 16-QAM/16-ARY, 32-ARY
• FEC: VersaFEC (low-latency LDPC) and VersaFEC-2 (high performance LDPC)
• Automatic Uplink Power Control (AUPC), and combined AUPC and ACM
• 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

Comtech EF Data Corporation is a leading supplier of satellite bandwidth and link optimisation. Comtech’s 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.