Themys part number:
9100002 - 9100003 - 9100001
Navitron part number:
NT920HDI - NT923HDI - NT925HDI
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...