Datum M7 Series Advanced IF & L-Band Troposcatter Modem

Description

The M7 Tropo Modem is Datum’ Systems‘ latest technical achievement with the most modern digital troposcatter modem and features available. The advanced features include Dual or Quad diversity with a Maximum Data Rate up to 102 Mbps of throughput, and FlexLDPC Forward Error Correction (FEC).

The M7 Tropo Modem is Datum’ Systems‘ latest technical achievement with the most modern digital troposcatter modem and features available. The advanced features include Dual or Quad diversity with a Maximum Data Rate up to 102 Mbps of throughput, and FlexLDPC Forward Error Correction (FEC). The M7 Tropo has advanced monitor and control (M&C) Capability for local and remote modem M&C with complete access to the modem parameters through the Web Browser, SNMP, and Serial interfaces.

Compact Modular Design – The modern M7 Platform dramatically reduces the weight and footprint over other available troposcatter modems to a single 1-RU Rack Space, saving expensive rackspace and weight. The Modulator, Quad Diversity Demod and the Dual-Diversity units all fit within a single 1/2 RU space, making it the world’s most modular platform available. A complete Quad-Diversity tropo modem fits within a single 1 RU Rack Space, and weighs less than 10 pounds. The Modulator and Demodulator units can be used as stand-alone for one-way traffic.

Advanced FlexLDPC FEC – With superior coding gain and flexibility, FlexLDPC provides superior error correction performance and an unparalleled amount of granular code rates and block size selections. Superior Multi-Path Performance – The M7 Tropo Series offers the highest dispersion tolerance available. Two Sigma over Tau Performance – The M7 Tropo uses a new and different patented technique to equalise troposcatter channels, and is able to equalise channels that are much more dispersive than usually encountered on tropo links. The usual measure of the dispersion of a tropo channel is the delay spread over the symbol period, “Two Sigma/Tau” or (2σ/τ). Typical tropo modem specifications available today are based on 2σ/τ operation up to 3, or in a rare case up to 6. The M7 Tropo is highly insensitive to this parameter and the performance improves for higher 2σ/τ. As data rates go up, the symbol period goes down, making 2σ/τ larger. This important design aspect allows the Datum Tropo Modem to scale much better than other tropo modem types.

Network Interface (N7) – The N7 is a Layer 2 Bridge-only Switch based 5 Port Gigabit Ethernet interface, which includes an additional SFP Port for an Optic Fiber connection. The N7 also supports optimal QoS, VLAN operation and Jumbo Frames.