References
199
850-165085 / Rev.B
Height reference:
The Height sensor measures the distance
from the headrope to the bottom. If you use the PI44 echo
sounder, set
Height reference
to
Bottom
(default), and the
height marker will follow the bottom contour. If you even
define the delay correctly, you will be able to see the trawl in
true motion. If you do not have en active echo sounder, set
Height reference
to
Surface
. The height will then be shown
with 0 m depth as reference, and the marker line will appear as a
nearly straight line some distance below 0 meters. The distance
from the 0 meter line and down to the marker line will be the
current opening of the trawl.
Related topics
→
Graphic display, page 41
→
Graphic setup, page 184
→
Trawl calculator, page 221
