NT921GOutline Specifications

All Navitron Autopilot systems are covered by comprehensive warranty terms and are supplied standard complete withMag Heading Sensor Coil, Rudder reference Unit and Control Unit incorporating 11 - 40Vdc 5A rated solid state switchesfor the control of solenoid hydraulic steering systems. Various optional equipment includes dual channel Analogueoutputs (-10V to +10V) for Analogue steering system control.

NT921G Autopilot Input/Output Specifications

Inputs:- Outputs:-

Supply Voltage Range 11-40VdcPower Consumption 2.5W (@24Vdc)

Illumination Max 8.1W (@24Vdc)

Mag Heading Input PortsNavitron Heading

Sensor Coil mounted Coil type HSC1above/below or HSC2

Existing Mag CompassResolution 0.25˚

NMEA 0183 Heading XX HDMSentence from XX HDG

Electronic Compass XX HCC(Priority as shown) XX HDT

Resolution 0.1˚

Gyro Heading Input PortsIsolated 1:1 Synchro 400Hz Excitation

available in Gyro from AutopilotResolution 0.25˚

NMEA 0183 Heading XX HDTSentence from Gyro XX HDM(Priority as shown) XX HDG

XX HCCResolution 0.1˚

Follow Up Rate (Minimum)All Heading Input Types 30˚ / Sec

Cross Track Error Signal Input (GPS etc)XX APA

NMEA 0183 XX APBSentence types XX RMB

XX XTENMEA 0180 (CTE only)

Operating TemperatureRange -20 to +60˚C

Operator ControlsYawRudderCounter RudderRudder LimitIlluminationMode SwitchGyro/Mag Selector

Panel AlarmsPower FailSteering System FailHeading Input FailData Input FailOff CourseRemote EngagedAlarm Test Facility

NMEA 0183 (Isolated RS422)Update Selectable @

Rate 1Hz, 11Hz or 22HzHz Mag Gyro

Sentence HCHCCTypes 1 HCHDG HEHDT

(Mag/Gyro APHCC AGHDTV APHDG

Update 11 HCHDM HEHDTRate) HCHDG AGHDT

22 HCHDM HEHDTResolution 0.1˚

Furuno Format

Update Rate Selectable @5Hz or 40Hz

Resolution Selectable @0.166˚ or 0.1˚

Signal Amplitude Selectable @5Vdc or 12Vdc

Step by Step

Steps per degree Selectable @3, 6, 12 or 24

Signal Amplitude 5Vdc

Navitron Serial Data

To Navitron Digital Repeaters Etc.

Solenoid Switching

Polarity Selectable @Common +VE/-VE

Max Rating 5A @ 40Vdc