LT-1000 User & Installation Manual
Configuration using LT-Service Tool
Lars Thrane A/S
www.thrane.eu
31 of 42
GNSS satellite receiver configuration
The LT-1000 NRU is by default configured to the following GNSS satellite reception:
GPS, SBAS, QZSS and GLONASS
For a complete list of possible configurations, see Table 6, which may be configured using the LT-Service
Tool. For further information on the LT-Service Tool, see Configuration using LT-Service Tool on page 29.
Mounting offset adjustment
To get the best possible performance with the LT-1000 NRU, it is required to perform a mounting offset
adjustment after physical installation of the device, see procedure below.
Mounting offset procedure:
1)
Physical installation of LT-1000 NRU (this includes heading alignment with the centerline of the ship).
2)
Perform a Deviation calibration as described in Deviation calibration on page 27.
3)
Roll and pitch adjustment
a.
Use the following LT-Service Tool command: “set rotation offset auto”. This command will
automatically set roll and pitch level to zero, for the current orientation of the ship.
4)
Heading adjustment
a.
Use the following LT-Service Tool command: “set heading offset <offset>” or “set heading
<heading>” to adjust the heading offset of the installation. It is recommended to perform a
bearing against a known object on the sea chart and then calculate the heading offset.
5)
Vertical height adjustment
a.
Use the following LT-Service Tool command: “set vertical offset <height>”, where height is
defined in meters. The vertical height adjustment is required for correct output of the
pressure above sea level.
By performing the steps specified in the above mounting offset adjustment procedure the end-user of the
product will get the best possible performance from the LT-1000 NRU.
Verify a subsequent deviation calibration
There are two ways to verify a sub-sequent deviation calibration:
·
After a successful deviation calibration (a new deviation calibration is stored in the device), the LT-
1000 NRU will suspend the heading output in 10 seconds (this is supported in LT-1000 NRU SW v1.02
or newer).
·
Use the following LT-Service Tool command: “status”. The status command will display the latest
deviation calibration with a time stamp.
GNSS Satellite Receiver Configuration
Configuration
GNSS Satellites
Default
GPS, SBAS, QZSS, GLONASS
Option 1
GPS, SBAS, QZSS, BeiDou
Option 2
GPS, SBAS, QZSS
Option 3
GPS, QZSS
Option 4
GLONASS
Option 5
BeiDou
T
ABLE
6:
GNSS
S
ATELLITE
R
ECEIVER
C
ONFIGURATION
Summary of Contents for LT-1000 NRU
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