12 December 2011
The WNM provides a low-cost wireless communications link between field sites that are in rugged or impassable terrain, with a single unit transmitting for up to 30 miles and the ability to act as a repeater for a virtually unlimited transmission range.The bi-directional WNM employs Spread Spectrum Frequency Hopping technology to avoid interference problems caused by crowded radio spectrums. This technology allows multiple radio networks to use the same band while in close proximity. Operating at standard operating frequencies of 902-928MHz or 2.4-2.4835GHz, the WNM does not require a regulatory license and can typically be installed without performing costly RF site surveys.When it is set in the Smart Switch Ethernet (SSE) mode, the WNM enhances the speed and reliability of data packet transmission by determining the most efficient path of broadcast (including direct to a single radio or to some or all radios in a network) on a packet-by-packet basis.The WNM is suited to use with the Moore Industries NCS NET Concentrator System, as well as other SCADA and distributed I/O systems. WNM models are available for data communications networks that use Ethernet and serial (RS-485) communications. In each WNM network, one module is set as a master. This can be set to communicate with a single WNM remote unit in a point-to-point architecture or multiple WNM remote units in a point-to-multipoint architecture. The WNM is easy to install and use, as it can be factory-configured to fit user specifications before being shipped. In addition, free PC configuration software allows end users to perform on-site configuration, parameter changes and add WNM modules to a network.
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