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Lars-Thrane

LT-1000NRU

LT-1000 High-Precision GPS Compass

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Retail priceBenefit from the professional rate

£875.88 GBP

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Low stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Technical specifications

Type de système	GNSS/INS
Usage marin	course
GNSS intégré	simple antenne
RTK / PPK	non
Précision roulis/tangage (°)	0.5
Précision du cap (°)	0.5
Heave en temps réel	non
Interfaces	NMEA 0183,NMEA 2000
Protocoles de sortie	NMEA 0183,NMEA 2000
Indice IP	IP46
Température min (°C)	-40.0
Température max (°C)	55.0
Tension d'entrée (V)	9-40
Consommation (W)	1.0
Dimensions (mm)	151.4 x 81.6 x 128.0 (avec support de mât) / 151.4 x 136.0 x 46.0 (avec support de toit)
Poids (g)	240.0
Connector type	8-pin female
Max power consumption	1
Typical power consumption	< 1
Wired network	NMEA 0183, NMEA 2000

Detailed description

Designed for professional and recreational maritime navigation, the Lars Thrane LT-1000 is a reference navigation unit (NRU) and high-precision GPS compass. This compact system integrates 12 precision sensors, including magnetometers, gyroscopes, accelerometers, a GNSS receiver, a barometer, and a thermometer. Using sensor fusion and Kalman filtering, the LT-1000 provides real-time data on true heading, magnetic heading, deviation, variation, roll, pitch, position, satellite information, ground speed, ground track, time and date, atmospheric pressure, and temperature, all with high resolution and precision.

Precision and connectivity

The LT-1000 features a 72-channel GNSS satellite receiver, compatible with GPS, GLONASS, and BeiDou, with SBAS support for improved position accuracy. Static heading accuracy is less than 0.5° (rms) and dynamic accuracy less than 1.5° (rms) under roll/pitch angles below ±45° and a yaw rate ≤ 45°/s. Its connectivity is provided by a single 8-pin interface supporting both NMEA 0183 (4800 or 38400 baud) and NMEA 2000 protocols simultaneously, simplifying integration with existing navigation systems. The NMEA 2000 termination is configurable via DIP switch.

Installation and robustness

The unit is designed for easy installation on a 1-inch mast or roof mount, with a single cable for power (9-40 VDC) and data, and power consumption below 1W. Its design meets marine environment requirements, with IP46 waterproofing and an operating temperature range from -40°C to +55°C. It is certified to CE, IEC 60945, IEC 60950, EN 300440-2, FCC, IC, RCM, RoHS, NMEA 0183, and NMEA 2000 standards. Each unit is factory-calibrated. Two deviation calibration options are available: the standard "figure 8" method or adaptive calibration, which optimizes performance over time. While this product has reached end of life, it continues to receive technical support.

Documentation

Type	Nom
	EN - Footprint
	43-100413-rev_-1_00-lt-1000-outline-drawing-roof-m.pdf
	EN - Declaration of Conformity
	EN - User and Installation Manual
	EN - Quick Installation Guide
	EN - Expert opinion on CE conformity assessment - LT-1000 High-precision GPS compass
	EN - Product Sheet

Expert opinion

Pol CONIN

Digital Manager

« Analyse technique du compas GPS Lars Thrane LT-1000 et son intégration système »

Le Lars Thrane LT-1000 se positionne comme une solution de référence pour les navires nécessitant une unité de navigation précise et polyvalente. Sa force réside dans son architecture multi-capteurs (12 au total) combinée à la fusion de données et au filtrage de Kalman. Cette approche permet de fournir non seulement un cap fiable, mais aussi des informations cruciales sur le roulis, le tangage, la position GNSS multi-constellations (GPS, GLONASS, BeiDou) et des données environnementales comme la pression et la température. Cette richesse d'informations est essentielle pour les systèmes de pilotage automatique avancés, les superpositions radar précises et les applications AIS.

D'un point de vue installation, le LT-1000 est remarquable par sa simplicité grâce à son unique câble de communication et d'alimentation et ses options de montage sur mât ou sur toit. La calibration de déviation adaptative est un atout majeur, particulièrement pour les navires où la réalisation d'une figure en 8 est complexe ou impossible. Il est recommandé d'assurer une installation par un professionnel qualifié pour optimiser les performances et respecter la distance de sécurité de 0,3 m par rapport aux compas magnétiques. Sa faible consommation (Bien que le LT-1000 soit un produit en fin de vie commerciale, il continue de bénéficier d'un support, ce qui garantit sa viabilité à court et moyen terme. C'est un choix pertinent pour ceux qui recherchent une unité fiable et éprouvée offrant un large éventail de données de navigation dans un format compact et économe en énergie, sans nécessairement exiger les toutes dernières innovations logicielles ou intégrations de plateformes propriétaires des modèles de nouvelle génération.

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LT-1000 High-Precision GPS Compass

£875.88 GBP

Frequently Asked Questions

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What is the primary function of the Lars Thrane LT-1000 GPS compass?

The Lars Thrane LT-1000 is a Navigation Reference Unit (NRU) and high-precision GPS compass. It is designed to provide essential and accurate navigation data for professional and recreational marine applications.

What types of data can the LT-1000 provide?

The LT-1000 provides in real time a wide range of data with high accuracy and resolution, including:

True heading and magnetic headingDeviation and variationRoll and pitchPosition and satellite informationSOG and COGTime and dateAtmospheric pressure and air temperature

What is the heading accuracy provided by the LT-1000?

The LT-1000 provides static heading accuracy better than 0.5° (rms) and dynamic accuracy better than 1.5° (rms), with roll/pitch angles under ±45° and a yaw rate ≤ 45°/s.

Which GNSS satellite systems are compatible with the LT-1000?

The LT-1000’s 72-channel GNSS satellite receiver is compatible with GPS, GLONASS and BeiDou systems. It also supports SBAS for enhanced position accuracy.

What are the dimensions and weight of the LT-1000?

Dimensions and weight vary slightly depending on the mounting type:

With mast mount: 151.4 x 81.6 x 128.0 mm (5.96 x 3.21 x 5.04 in) for a weight of 240 g (0.53 lbs). With roof mount: 151.4 x 136.0 x 46.0 mm (5.96 x 5.35 x 1.81 in) for a weight of 281 g (0.62 lbs).

What is the IP rating of the LT-1000?

The LT-1000 has an IP46 ingress protection rating, meaning it is protected against powerful water jets from any direction and solid objects larger than 1 mm.

What is the operating temperature range of the LT-1000?

The LT-1000 is designed to operate within an extended ambient temperature range from -40°C to +55°C (-40°F to +131°F).

Does the LT-1000 measure atmospheric pressure and air temperature?

Yes, the LT-1000 integrates a barometer and a thermometer. It can provide real-time atmospheric pressure and air temperature data.

Which advanced technologies are integrated into the LT-1000 for its accuracy?

The LT-1000 integrates advanced technologies such as sensor fusion and Kalman filtering. These techniques allow combining data from 12 precision sensors (magnetometers, gyroscopes, accelerometers, GNSS, barometer, thermometer) to provide extremely accurate and reliable navigation information.

What is the power consumption of the LT-1000?

The LT-1000 has a very low power consumption, less than 1W at 12 VDC.

Which communication protocols is the LT-1000 compatible with?

The LT-1000 is compatible with NMEA 0183 and NMEA 2000 protocols. It features a single 8-pin interface that supports both protocols simultaneously.

Which NMEA 0183 baud rates are supported?

The LT-1000 supports NMEA 0183 baud rates of 4800 baud or 38400 baud. The default configuration is 4800 baud.

Is the NMEA 2000 termination configurable on the LT-1000?

Yes, the NMEA 2000 termination of the LT-1000 is configurable via a DIP switch. The unit can be set to 'open' or 'terminated' mode, with 'open' as the factory default setting.

What is the required input voltage range for the LT-1000?

The LT-1000 operates with an input voltage of 9 to 40 VDC.

What are the mounting options available for the LT-1000?

The LT-1000 is designed for easy installation and provides two mounting options:

1" mast mount.Roof mount.

Is a single cable used for power and data?

Yes, the LT-1000 uses a single 8-pin cable for power supply (9-40 VDC) and NMEA 0183 and NMEA 2000 data transmission, simplifying installation.

What is the safe distance from a magnetic compass for the LT-1000?

The safe distance from a standard or helm magnetic compass is 0.3 meters (1 foot). It is important to respect this distance to avoid any interference with a magnetic compass.

Are there any precautions to take during installation to avoid interference?

Yes, to ensure optimal performance, it is recommended to:

Mount the unit on a rigid structure with minimal exposure to vibrations and shocks. Install it in an area where the ambient temperature is between -40°C and +55°C. Position it as far as possible from magnetic disturbances (such as speakers) and power cables.

How is deviation calibration performed on the LT-1000?

The LT-1000 offers two options for deviation calibration:

Standard deviation calibration (using an '8' pattern). This is the default setup.
Adaptive calibration.
These procedures are required to ensure reliable heading output.