Comtech EF Data :: CDM-625 Advanced Satellite Modem

CDM-625 Advanced Satellite Modem - The Next Generation

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Featuring: DoubleTalk® Carrier-in-Carrier®

Overview
Key Features
Users & Applications
Accessories

Down Power Lines Image The CDM-625 Advanced Satellite Modem builds on Comtech EF Data’s legacy of providing the most efficient satellite modems. It is the first modem to combine advanced Forward Error Correction (FEC), such as VersaFec™ and Low Density Parity Check (LDPC) codes with the revolutionary DoubleTalk® Carrier-in-Carrier® bandwidth compression allowing for maximum 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

Product Specifications

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Key Features

DoubleTalk Carrier‑in‑Carrier bandwidth compression
Adaptive Coding and Modulation (ACM)
Dual Band Capability: 70/140 MHz and L-Band in same unit
Data Rate: 18 kbps to 25 Mbps
Symbol Rate: 18 ksps to 12.5 Msps
Modulation: BPSK, QPSK/OQPSK, 8-PSK/8-QAM, 16-QAM
Forward Error Correction (FEC): Viterbi, Sequential, Concatenated Reed Solomon, TCM, Turbo Product Code (TPC) (IESS 315 Compliant), Low Density Parity Check (LDPC) Code and VersaFEC (low latency LDPC)
Widest Range of Data Interfaces: EIA-422/530, V.35, G.703 T1, G.703 E1, G.703 T2, G.703 E2, Quad G.703 E1, ASI, LVDS, HSSI, 4-port 10/100 BaseT Ethernet
4-port Managed Ethernet Switch with VLAN and QoS
Sub Mux to multiplex IP/Ethernet traffic with serial or G.703 traffic
Drop & Insert for T1/E1
Enhanced D&I++ for Single T1/E1 & Quad E1
Management: 10/100 BaseT Ethernet with SNMP, Distant End SNMP Proxy, HTTP and Telnet and EIA-232/EIA-485
Embedded Distant end Monitor and Control (EDMAC)
Automatic Uplink Power Control (AUPC)
Engineering Service Channel (ESC/ESC++)
Standard High Stability Internal Reference (±6 x 10^-8)
5-tap Adaptive Equalizer
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
Open Network Modes
CDM-600/L emulation mode
1:1 and 1:10 Redundancy Switches Available
Backwards compatible with CDM-500/CDM-550, CDM-550T, CDM-570/L and CDM-600/L
Interoperable with many Comtech EF Data satellite modems: CDM-Qx/L, SDM-8000, 300A, and 300L3

Product Specifications

Typical Users

Telecom Operators
Mobile Operators
Satellite Service Providers
Government & Military
Enterprise
Offshore

Common Applications

Cellular Backhaul
Providing T1/n x E1/T2/E2 Connectivity
Transmission of Voice, Video & Data
High Speed Trunking
Offshore Communications
Communications-on-the-Move
(Land Vehicles/Trains)
Satellite News Gathering

Redundancy Switches

CRS-170A 1:1 Redundancy Switch (L-Band)
CRS-180 1:1 Redundancy Switch (70/140 MHz)
CRS-300 1:N Modem Redundancy Switch
CRS-350 with CRS-300 1:N Modem Redundancy Switch (IDR Overhead)
CRS-280 with CRS-300 1:N Modem Redundancy Switch (70/140 MHz)
CRS-280L with CRS-300 1:N Modem Redundancy Switch (L-band)

Other Accessories

CIC Interface Converters
Rear rack-mount bracket kit

Notice: Comtech EF Data reserves the right to change specifications of products described in these documents at any time without notice and without obligation to notify any person of such changes. Information in these documents may differ from information published in other Comtech EF Data documents.