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

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