By Nathan Knutson , Vice President, Government Strategic Programs, General Dynamics C4 Systems / Satcom Technologies
SubscribeNSM-20M Generation III Offers Increased Speed, Port Routing and Modem Support.
VertexRSI's new NSM-20M Generation III Nodal Satellite Multiplexer offers increased speed and improved performance and versatility.
The NSM-20M is a small, lightweight synchronous time-division multiplexer that provides aggregate interfaces to satellite modems and group interfaces to terrestrial equipment. The NSM-20M delivers cost-effective solutions to satellite communication multiplexing demands. In its legacy mode, the NSAM-20M is interoperable with and functionally replaces the legacy TD-1337 Tactical Satellite Signal Processor (TSSP). In its enhanced modes, the NSM-20M is interoperable with MIDAS, GMT and other Mil-Std-168 compliant equipment.
The new NSM has a number of enhancements and added features that improve its speed and performance over previous NSM products. VertexRSI has increased the maximum aggregate port data rate to 20Mbps and the maximum group port data rate to 4.608 Mbps.
The Third Generation NSM offers increased capability over previous NSM models. Two additional T1/E1 ports and four additional DCI ports have been added to the NSM-20M for a total of six of each. A new, more powerful port router gives users the flexibility to independently access inputs including a combination of NRZ, CDI, T1/E1. The unit also has the capability to prioritize any number of available reference clocks for automatic detection, lock and fallback, which makes it one of the most reliable, and versatile units available.
Full SATCOM Support:
The NSM-20M Generation III supports fully connected mesh networks with up to seven nodes. It multiplexes up to 12 group inputs (selected in any combination from the 25 ports) into a single aggregate stream for transmission providing more efficient use of bandwidth since guardbands between channels are not required. The unit also features a digital signal processor that performs frame synchronization acquisition, maintenance, initialization, configuration, control telemetry, aggregate bit error rate monitoring and built-in test functions.
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Compact Design:
The NSM-20M Generation III is packaged in a single rack unit enclosure. Packed into that space-saving framework are:
- One multiplexer with one spare aggregate output
- Six demultiplexers with one spare demultiplexer switchover input
- 12 active terrestrial-side group interfaces with satellite Doppler buffers (selected from 25 available ports), and
- A secure/non-secure voice orderwire bridge with ring detection and generation
User-Friendly:
The NSM-20M Generation III is managed via an EIA RS-232 or RS-485 port connected to a personal computer. A user-friendly graphical M&C interface provides extensive diagnostic reporting.
More information on the VertexRSI NSM-20M may be obtained by contacting Brent Jones at (903)-295-1480 Ext 271 or via e-mail atbrent.jones@tripointglobal.com
Click on the following link to access a Data Sheet on the NSM-20M.http://www.tripointglobal.com/Govt-Military/default.htm
TriPoint Global Communications offers a family of satellite and wireless communications products and services under its VertexRSI, Prodelin and Gabriel brands. Visit our web site at www.tripointglobal.com
