Simrad PI44
82
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 height of the trawl.
(A) = Numeric depth display, Sensor “4D” (Depth)
(B) = Marker line from Depth sensor”4D”
(C) = Numeric depth display, Sensor “6D” (Depth). A different
background colour has been chosen to tell the marker lines
apart.
(D) = Marker line from Depth sensor”6D”
