LT1000 electronic compass m. Innbyggðum GSS/GPS móttakara
LT 51-100142
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Key Features:

Navigation Reference Unit with 12 precision sensors

True heading, magnetic heading, deviation, variation, roll, pitch, UTC time and date, position, satellite information, ground speed, course over ground, air pressure and temperature

72-ch. GNSS (GPS/GLONASS/BeiDou) satellite receiver with SBAS corrHection

Standard (figure 8-pattern) and Adaptive deviation calibration algorithm

Simultaneously NMEA 0183 and NMEA 2000

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)

Each unit is factory calibrated and functional tested over temperature prior to shipment

Worldwide maritime certification


Certification & standards: CE, IEC 60945, IEC 60950, EN 300440-2, FCC, IC, RCM, RoHS, NMEA 0183, NMEA 2000

Dimensions, with pole mount: 151.4 x 81.65 x 128.0 mm (5.96 x 3.21 x 5.04 in.)

Weight, with pole mount: 240 g (0.53 lbs)

Temperature (ambient), operational: -40°C to +55°C (-40°F to +131°F)

Temperature (ambient), storage: -40°C to +85°C (-40°F to +185°F)

Waterproof: IP46 / Humidity: 95% non-condensing @ 40°C

Communication Interface: 8-pin female connector for NMEA 0183, NMEA 2000 and power

Input power: 9-40 VDC

Power consumption: < 1W

Load Equivalent Number (LEN): 2

Compass safe distance: 0.3 m (1 ft)

In The Box:

LT-1000 NRU

Pole & Roof Mount

10m Cable Multi 8-pin Simple-Cut (M)

Screw-in Conn. NMEA 2000 Micro-C (M)

Quick Installation Guide

Safety Instructions Sheet

Unit Test Sheet


The LT-1000 Navigation Reference Unit (NRU) is a maritime heading sensor with built-in GNSS/GPS receiver from Lars Thrane A/S. The LT-1000 NRU is designed for the leisure as well as the professional maritime markets. The LT-1000 unit meets all standards and certification requirements needed for worldwide maritime navigation equipment.


The LT-1000 NRU is a small, compact, and very advanced unit with 12 precision sensors (magnetometers, gyros, accelerometers, barometer, thermometer, and GNSS/GPS receiver). With the use of sensor-fusion and Kalman filtering, the LT-1000 NRU outputs: true heading, roll, pitch, position, ground speed, course over ground, air pressure, and temperature in real-time, with high precision and resolution. The LT-1000 NRU 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

Receive and track multiple satellite systems (GPS, GPS & GLONASS, or GPS & BeiDou)

Support for Satellite-Based Augmentation System (SBAS): EGNOS, WAAS and MSAS

The LT-1000 NRU makes use of the latest technology within GNSS/GPS receivers, with market leading acquisition and tracking performance.

The LT-1000 NRU is designed and built for the demanding and rough environment at sea and with an operational temperature range from -40⁰C to +55⁰C (-40⁰F to +131⁰F).


The LT-1000 Navigation Reference Unit is easy to mount on a 1” pole (optional installation: roof mount) with a single cable supporting NMEA 0183, NMEA 2000, and power. The built-in magnetometer calibration algorithm will quickly compensate for heading deviation, and the LT-1000 NRU will output reliable navigation data. An external PC installation and service software is available for optional configuration and maintenance of the LT-1000 NRU.

More than 40 years of experience have been put into the design and construction of the advanced LT-1000 NRU, with an exceptional performance and specification level.

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