logo







Home

Whats New

Software

Hardware

Custom

Support

Price List

Terms

Links


Dolphin Maritime Software Ltd.



NSW1A NMEA Auto Switch

(Order Code HANMAS1)


Automatic selection of the highest priority NMEA device, for your multiple GPS, depth sounder installations and more... The Actisense™ NMEA Autoswitch (NSW-1) from Active Research, allows the data from up to four NMEA (National Marine Electronics Association) input devices to be switched to a single NMEA output, by determining the highest priority device with good data.

Replace your mechanical changeover switch with the NSW-1 automatic changeover system from Actisense. The intelligent Autoswitch (NSW-1) will guarantee that the best input device is always selected to supply the NMEA data output, automatically choosing the next highest if the current highest priority input device should fail for any reason.


Electrical spike protection is provided as standard on all four input channels using opto-isolators. This protects any connected equipment from most system faults; a particularly valuable benefit as equipment requiring the most data, such as a PC or chart plotter, is often the most expensive to repair or replace.

The NSW-1 Autoswitch contains intelligent software that determines the highest priority device based on one of three reasons:

  • a complete failure to send any NMEA data,
  • corrupted NMEA data detected (with checksum calculation),
  • if the validity flag(s) contained within the NMEA data indicate that this data is not valid and should only be used with caution.

Copyright © 2005Dolphin Maritime Software Ltd.