Lars Thrane LT-1000 NRU User manual

Lars Thrane A/S
September 19, 2016
LT-1000 NRU & LT-500 AHRS
Installation on Grand Banks 64 Aleutian

LT-1000 NRU –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 correction
•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
19-09-2016 Lars Thrane A/S - www.thrane.eu 2

LT-1000 NRU - Specifications
•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)
19-09-2016 Lars Thrane A/S - www.thrane.eu 3

LT-500 AHRS –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
•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
19-09-2016 Lars Thrane A/S - www.thrane.eu 4

LT-500 AHRS - Specifications
•Certification & standards: CE, IEC 60945, IEC 60950,
FCC, IC, RCM, RoHS, NMEA 0183, NMEA 2000
•Dimensions: 91.6 x 75.3 x 32.7 mm
(3.61 x 2.96 x 1.29 in)
•Weight: 104 g (0.23 lbs)
•Temperature (ambient), operational: -25°C to +55°C
(-13°F to +131°F)
•Temperature (ambient), storage: -30°C to +80°C
(-22°F to +176°F)
•Waterproof: IP42 / 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)
19-09-2016 Lars Thrane A/S - www.thrane.eu 5

Grand Banks 64 Aleutian
•Grand Banks 64
Aleutian equipped with
LT-1000 NRU and LT-500
AHRS for primary
navigation equipment
•The GB64 originally had
Sperry Marine Satellite
Compass as navigation
equipment (removed)
•The LT-1000 NRU and
LT-500 AHRS provides
heading and positioning
information to:
•Autopilot
•ECDIS (radar & chart
plotter)
•VHF & MF-HF
19-09-2016 Lars Thrane A/S - www.thrane.eu 6

LT-1000 NRU - Installation
•The LT-1000 NRU is mounted on the
radar arch (targa) using the 1”pole
mount
•The ‘old’Sperry Marine Satellite
Compass (antennas) is visible on the
radar arch on the starboard side of the
LT-1000 NRU
•The LT-1000 NRU has a built-in
immunity filter to protect the GNSS
receiver from radio transmitting
antennas (VHF, UHF, MF-HF, Inmarsat,
Iridium, transmitting VSAT, etc.)
•The LT-1000 NRU shall be mounted
with a minimum angle of 20 degrees
towards a radar antenna (above or
below)
•Further mounting considerations can
be found in the LT-1000 NRU User &
Installation Manual
19-09-2016 Lars Thrane A/S - www.thrane.eu 7

LT-500 AHRS - Installation
•The LT-500 AHRS is installed indoor, in the
bridge roof (up-side-down) and pointing
towards the bow of the vessel
•By use of the ‘auto level’function the LT-
500 AHRS can be mounted in any
orientation. The ‘auto level’function can
be accessed from the built-in user
interface (buttons and display)
•Mount the unit away from possible
magnetic disturbances (e.g. loudspeakers
and power cables)
•Further mounting considerations can be
found in the LT-500 AHRS User &
Installation Manual
19-09-2016 Lars Thrane A/S - www.thrane.eu 8

Navigation Details
•The LT-1000 NRU and LT-500 AHRS
are internally connected on a
NMEA 2000 backbone, which is
connected to Garmin GMI-20
displays (to show heading
information)
•The LT-1000 NRU is configured to
4800 baud on the NMEA 0183
interface and connected via a
buffer to the autopilot, ECDIS, VHF,
and MF-HF system
•The LT-500 AHRS is configured to
38400 baud and connected
directly to the autopilot and ECDIS
system as the primary navigation
equipment (Gyro 1)
19-09-2016 Lars Thrane A/S - www.thrane.eu 9
Note:
By connecting the LT-500 AHRS and the LT-1000 NRU
on the NMEA 2000 backbone, the LT-500 AHRS is receiving
position and time and can be configured to output true
heading. Otherwise, the LT-500 AHRS will output magnetic
heading. For further details, see the LT-500 AHRS User &
Installation Manual.

GB64 Navigation Wiring Diagram
19-09-2016 Lars Thrane A/S - www.thrane.eu 10