Navitron Systems Ltd

NT920HDI Technical Specifications

	Inputs: -				Simultaneous Outputs: -
	Supply Voltage Range	11 - 40Vdc			Navitron Autopilot Data: -
	Power Consumption	1.9W			D/A Converted Heading Outputs for Navitron Autopilot types as shown	NT920, NT921(MK1), NT920G, NT925G
	NMEA Heading Data: -
	NMEA 0183 Heading Sentence from electronic compass (priority & max update rate as shown)	XXHDG	16Hz
		XXHDM	25Hz		Navitron Custom Serial Heading Data: -
		XXHCC	28Hz		(to NT920DHR/1 Digital Heading Repeaters)
		XXHDT	25Hz
	Resolution	0.1°			Furuno Heading Data: -
					Update Rate	Selectable @ 5Hz or 40Hz
	Furuno Heading Data: -				Resolution	Selectable @ 0.166° or 0.1°
	Data Type	AD10
	Max Update Rate	50Hz			Signal Amplitude	Selectable @ 5Vdc or 12Vdc
	Max Signal Voltage	15Vdc
					Source Current	20mA max
	Speed Log Input Data: -				Step by Step Heading Data: -
	Speed Input Range	0.1 to 50 Knots			Steps per Degree	Selectable @ 3, 6, 12 or 24
	Pulse Rate	200 or 400 p.p.NM.
	Min Pulse Width	4.0 mS			Signal Amplitude	5Vdc
	Signal Voltage	4 - 12 Vdc			Current Rating	2mA source/sink
					Z Out	270R
	Operating Temp Range	-20 to +60 °C
					NMEA 0183 Data (RS422): -
	Compass Safe Distance	0.5m			Sentence types with MAG link selected: -	Ch.1 update rate	Ch.2 update rate
					$HCHDG & $HCHDM	6Hz	6Hz
	Mechanical Data: -				$VDVHW	3Hz	1Hz
	Height	145mm			Sentence type with GYRO link selected: -
	Width	222mm
	Depth	55mm			$HEHDT	10Hz	10Hz
	Weight	0.75Kg			$VDVHW	3Hz	1Hz
					Resolution (Heading)	0.1°
					Resolution (Speed)	0.1 Knot (min) to 1% (max)
					Signal Amplitude	±5Vdc nom.
					Current Rating	50mA source/sink