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NORTEK
12 GNSS
The Advanced Navigation GNSS Compass can be monitored and configured through its internal web-
interface. Some settings require the user to enter a username and password. The default settings are:
Username
:
admin
Password
:
password
The instrument comes in two variants: a standard (LC) and a High Accuracy (HA) version. Both offer the
same accuracy in heading, roll and pitch, but the HA version has a more accurate horizontal and vertical
position.
Figure 35 Identifying the version of the GNSS on the serial number sticker
12.1 Filter setting
Standard filter setting on th
e GNSS is ‘Small Boat’, which is shown to work fine with most survey vessels.
Should the system be used on larger vessels it could be set to ‘Ship’. Note that changing the filter settings
will not alter the response or lag of the measurements, it just helps the instrument to find a fix by giving it
some information on the expected movements.
12.2 Increasing the accuracy using RTK (NTRIP)
The Advanced Navigation GNSS can receive external correction signals over the Ethernet link using a
protocol named
‘NTRIP’ (Networked Transport of RTCM via Internet Protocol). The GNSS has a built-in
NTRIP client that can be configured through the menu.
