NAVITRON SYSTEMS NT990HDI, Heading & Speed Data Interface

Designed and developed by Navitron Systems Ltd to provide heading data/signal coupling between otherwise
incompatible equipment, the Navitron Heading Data Interface range offers simple to install solutions to many heading
data and speed log communication problems.
Three models of Heading Data Interface (HDI) are available to convert heading signals sourced from proprietary types
of gyro, magnetic and electronic compass to the signal format(s) required to ‘handshake’ with a wide range of end
users such as Radars, Trackplotters, Autopilots, GPS Receivers and Heading Repeaters. Additionally, two of the
models will accept speed log pulse information for conversion to combined NMEA heading & Speed data output (VHW
sentence) for use by ECDIS, AIS and VDR systems etc.