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Simrad EQ60
118
857-164342 / Rev.C
Trawl Range
The Trawl Range dialogue box opens if you click the right
mouse button in the range field in the Echogram and Range
view while operating with a Trawl Range echogram. The
different echograms are explained in the Echogram dialogue
box.
Echogram Margin - Trawl sensor systems communicate
headrope depth and headrope-to-footrope distance to the
sounder at regular intervals. The trawl echogram covers the
vertical opening of the trawl including a small margin above and
below. The headrope and footrope margins are identical.
Note that the headrope-to-footrope distance can be manually set
in the Trawl Interface dialogue box. This is used for trawl
sensor systems not measuring the vertical trawl opening, or
when the measured headrope-to-footrope distance is unreliable.
Related topics
→ Echogram, page 81
→ Traw l Interface, page 116