Kelvin Hughes Limited SXV-A1 Manual De Usuario
SharpEye™ SCV & SxV X-Band Radome Radar
Chapter 8: Commissioning
KH-1650-CA issue 1
Page 41 of 60
8.3 Compass Settings
INTERNAL COMPASS.
The SCV/ SxV is supplied with an internal compass that can be enabled as part of the system
integration. When enabled, NMEA messages are output within the UDP packets.
Where the internal compass is enabled and in use, the compass must be calibrated to eliminate any
errors caused by magnetic materials within the installation.
NOTICE
The following tests will require the platform to be manoeuvred into different positions / directions
to calibrate the internal compass.
Set up
With the DC supply to the system switched OFF, connect the SCV to a virus free
laptop computer. The connection can be made using the LAN cable supplied with
the equipment.
Switch ON the DC supply to the system.
During the configuration of the system, It is necessary for the GPS to have an
unimpeded view of the sky and be free from electromagnetic interference at GPS
frequencies.
Open Web
page
On the laptop PC, open an internet browser and enter the following address:
192.168.22.70:8008
Record
current
values
Record the Compass and
GPS Module Status shown
on the web page.
Compass:
GPS:
Start
Compass
Calibration
Click on the
Start Compass Calibration button and follow instructions on the web
interface. It will be necessary for the platform to be rotated or manoeuvre in a
complete circle, through North, South East and West.
The radius of the circle is unimportant.
Compass
Declination
If known, set the Compass Declination.
Notes: Magnetic declination or variation is the angle on the horizontal plane
Notes: Magnetic declination or variation is the angle on the horizontal plane
between magnetic north and true north. This angle varies depending on position on
the Earth's surface, and changes over time. If the position of the vessel changes
substantially from the location it was last calibrated in, this process should be
repeated.
Where the SCV/SxV is connected to a display system and is using
Where the SCV/SxV is connected to a display system and is using
a suitably
accurate GNSS, Log and Gyro providing regular messages at a suitable rate, it
may be preferable to us the check “Using external motion data source” where the
SCV/ SxV uses the external data rather than the internal compass. This should be
assessed by the service agent performing the procedure, please contact Kelvin
Hughes Ltd for further details.
Record the Compass Declination value: