Operational procedures
87
850-165085 / Rev.B
•
Trawl opening mode:
This parameter decides how the trawl
opening shall be recreated on the graphic presentation. If you
have sufficient sensors on the trawl you must select
Auto
,
and the the PI44 will automatically calculate the trawl
opening and draw it accordingly. If you only have one sensor
on the trawl opening (Depth or Height sensor on the
headrope), the
Manual
setting will add an artificial line on
the presentation. The distance from the headrope to the
footrope must then be defined manually using the
Manual
trawl marker
parameter.
Access to the parameters
1
Make sure that a graphic presentation is active.
2
Press the
ADJ
button to open the
Graphic setup
dialogue.
3
Press the
GAIN+
button to access the
Trawl info
setup
page.
Set up the parameters
1
Locate the setting
Headrope sensor
, and choose the
sensor that you have placed on the headrope.
- If you have no Depth or Height sensors on the
headrope, leave the setting to
None
.
2
Locate the setting
Footrope sensor
, and chose the sensor
that you have placed on the footrope.
- If you have no Depth or Height sensors on the
footrope, leave the setting to
None
.
3
Observe that the setting for
Trawl opening mode
is
automatically set to
Auto
or
Manual
.
- If you have sensors placed on both the footrope and the
headrope, the PI44 will be able to calculate the trawl
opening automatically, and the mode is set to
Auto
.
- If you have only one sensor, you will need to enter a
manual trawl marker.
4
If you have only one sensor, enter a value for
Manual
trawl marker
.
- This value must represent the actual height of your
trawl opening, based on your knowledge about your
gear. The information will be used by the PI44 to draw
a second trawl marker line.
Related topics
→
Graphic setup, page 184
→
Marker line setup, page 197
→
Trawl info setup, page 223
