Navitron
Systems Ltd
Autopilot Type NT921 MKII
Technical Specifications

Supply Voltage
11-40Vdc
Panel Displays: -
Rudder Angle
2 Digit + LCD Bar
Power Consumption
12v
24v
Heading Indicator
Servo Card in
Standby Mode and
3 Digit LCD Display
Standby
3.0W
3.6W
On
3.3W
3.9W
Illumination (max)
5.8W
7.0W
CTE Indicator
LED
Autopilot Mode
LED Indication of
Standby, Auto &
Remote
Solenoid Switch Ratings: -
Voltage
11-40Vdc
RadioNav Mode
LED Indication of CTE &
Auto Heading Correct
Current
5A (max)
Switchline Polarity
Installation
Selectable
CTE
Correction Angle
3 Digit LCD Display
2 Digit LCD Display
Switch Type
Solid State
(via auto Heading display updates at 15 second intervals)
Operator Controls: -
Yaw
Panel Alarms: -
Rudder
Remote Engaged
LED + Audible
Autopilot Mode Switch Data Input Fail (CTE)
LED + Audible
RadioNav Mode Switch Max Correction
LED + Audible
Illumination
Red Backlight
Heading Input Sentences from GPS
Compass etc: -
Mechanical
NT921 Control Unit
Width
259mm
NMEA 0183
XX HDT, XX HDG
XX HDM, XX HCC
Height
176mm
Depth - behind bezel
115mm
Weight
3.9Kg
XTE / HTS Input Data (from GPS/Plotter)
NMEA 0180
 
NMEA 0183
XX HSC (Priority)
XX APA, XX APB
XX RMB, XX XTE
Heading Output to Radars / Track Plotters etc.
Step by Step Selectable 3, 6, 12 or 24 steps per degree
 
1Hz
11Hz
22Hz
NMEA 0183
Sentence types
@ 1, 11 & 22Hz
APHDG, APHCC
HCHDG, HCHCC
or HEHDT, AGHDT
HCHDG, HCHDM
or
HEHDT, AGHDT
HCHDM
or
HEHDT
Furuno Format Selectable 0.1° or 0.166° resolution
Selectable 5Vpp or 11Vpp output
Selectable 5Hz or 40Hz update rate


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