Navitron
Systems Ltd
NT990HDI
Technical Specifications

Inputs: -
Simultaneous Outputs: -
Supply Voltage Range
11 - 40Vdc
1 or 2 Channels NMEA 0183 Isolated RS422
Outputs independently selectable 4800 baud
IEC61162/1 or 38400 baud IEC61162/2
Power Consumption
2.0W
Illumination Max
2.5W
Channel 1 (NT990HDI/1)
Step by Step Gyro Input: -
 
'S' Type
'M' Type
Sentence
Type
$HEHDT
$HEROT
$VDVHW
Step Voltage Range
10 - 115Vdc
10 - 115Vdc
Steps per Degree
3, 6 & 24
12
Update
Rate 4800
Baud
1Hz
5Hz
-
Resolution
0.1° - 0.33°
0.1°
10Hz
5Hz
-
Follow Up Rate (min)
40° / sec
40° / sec
20Hz
1Hz
-
Max Consumption
4mA / line
4mA / line
10Hz
5Hz
5Hz
Update
Rate 38400
Baud
40Hz
-
-
Synchro Gyro Input: -
40Hz
5Hz
-
Ratio
1:1
36:1, 90:1,
180:1, 360:1
40Hz
-
5Hz
40Hz
5Hz
5Hz
V Ref Range
10 - 115Vac
10 - 115Vac
Channel 2 (NT990HDI/2 Only)
Max Consumption
2mA
2mA
V Sig Range
(-30% +10%)
11 - 90Vac
11 - 90Vac
Sentence
Type
$HEHDT
$HEROT
$VDVHW
Frequency Range
50 - 500Hz
50 - 500Hz
Update
Rate 4800
Baud
1Hz
5Hz
-
Resolution
(Internal / Display)
0.25° / 0.5°
0.1° / 0.1°
10Hz
5Hz
-
20Hz
1Hz
-
Follow Up Rate (min)
50° / sec except
360:1 @ 24° / sec
10Hz
5Hz
-
Update
Rate 38400
Baud
40Hz
-
-
40Hz
5Hz
-
Speed Log Input Data: -
40Hz
-
-
Speed Input Range
0.1 to 50 Knots
40Hz
5Hz
-
Pulse Rate
200 or 400 p.p.NM
Min Pulse Width
4.0mS
Test / Certification Standards: -
Signal Voltage
10 - 70Vdc


General Requirements IMO A.694 (17)

Test standards: -
IEC 60945 (2002)
IEC 61162-1, IEC 61162-2
BSH Spec., Error management

Type Test Certification: -
Bundesamt fűr Seeschifffahrt und Hydrographie (BSH Germany)
Certificate N° BSH/6161/003/2004

Operating Temp Range
-20 to +60 °C
Compass Safe Distance
0.4m
Mechanical Data: -
Width
120mm
Height
190mm
Depth
55mm
Weight
0.9Kg

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