The LT-500 Attitude Heading Reference System (AHRS) unit is a maritime navigation electronic compass / heading sensor from Lars Thrane A/S, and is designed for the leisure as well as the professional maritime markets.
The LT-500 unit meets all standards and certification requirements needed for worldwide maritime navigation equipment.
Key Features
- Attitude Heading Reference System with 11 precision sensors
- True heading, magnetic heading, deviation, variation, roll, pitch, air pressure, and temperature
- Display and control buttons for installation and service
- Simultaneously NMEA 0183 and NMEA 2000 data
- Configurable NMEA 0183 sentences (enable/disable, talker ID, output rate)
- Easy configurable NMEA 2000 termination resistor (open or terminated)
- Easy configurable NMEA 0183 data rate (4800 or 38400 baud)
- Mount in any orientation without compromising the high performance
- Each unit is factory calibrated and functional tested over temperature prior to shipment
- Worldwide maritime certification
Performance
The LT-500 AHRS unit is a small, compact, and very advanced unit with 11 precision sensors. With the use of sensor-fusion and Kalman filtering, the LT-500 AHRS unit outputs: true heading1, roll, pitch, air pressure, and temperature real-time, with high precision and resolution.
The LT-500 AHRS unit includes advanced technologies such as:
- Kalman filtering
- Calculation of magnetic variation based on the World Magnetic Model (WMM)
- Compensation of soft and hard iron (deviation)
- Built-in magnetometer calibration algorithm
The LT-500 AHRS unit is designed and built for the demanding and rough environment at sea and with an operational temperature range from -25⁰C to +55⁰C (-13⁰F to +131⁰F).
Installation
The LT-500 AHRS unit is easy to mount and supports NMEA 0183, NMEA 2000, and power on a single cable, and it may be installed in any position without compromising its high performance.
The LT-500 AHRS unit has a built-in user interface (display and control buttons) for installation and service. Navigation output from the LT-500 AHRS unit is available in the user interface, and it supports automatic levelling (pitch and roll), which can be used during the installation. The built-in magnetometer calibration algorithm will compensate for deviation, and the LT-500 AHRS unit will output reliable navigation data.
The LT-500 Attitude Heading Reference System is supplied with 10m cable multi 8-pin simple-cut (M), screw-in connector NMEA 2000 micro-C (M), Quick Installation Guide, Safety Instructions Sheet, and Unit Test Sheet.
An external PC installation and service software is available for optional configuration and maintenance of the LT-500 AHRS unit.
