Installation of DFF3D Multibeam Sounder
© 1985-2018
Nobeltec
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Select "Internal" or "SC" for the Motion Sensor
Source ("Off" is not recommended).
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When set to "Internal", the motion sensor built
inside the DFF-3D transducer will be used. In
that case, there is no need to enter the Motion
Sensor position (because it is the same location
as the transducer!).
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Select "SC" when a SC30 is connected to
TIMEZERO (preferably using an Actisense NGT-
1 via the NMEA2000 bus). In that case, enter
the SC30 position (enter the relative position
from transducer to SC30 location) using the
same rules as the Transducer to GPS location. If
your SC30 is also your primary GPS sensor, you
can enter the same offset as GPS location.
IMPORTANT
: For the best motion compensation performance, we highly recommend using a SC30 connected to
TIMEZERO via NMEA2000 (using the Actisense NGT1 USB to NMEA2000 adapter). In that case, "Motion Sensor
Source" should be setup to "SC" with accurate GPS and Motion sensor offset values.
Below is an example illustrating proper offset (SC30 is used for both GPS and Motion Sensor):
If the Motion Sensor (Pitch & Roll values) seems
incorrect, it is possible to adjust an offset.
TIPS
: You can use the "DFF-3D Monitor" window to see the Pitch & Roll value in action. You can refer to the DFF-
3D Monitor chapter.