Trawl - Simrad ES70 - REFERENCE MANUAL REV A Reference Manual

Trawl

The dialog is opened from the
Trawl
Purpose
The dialog allows you to enter the main parameters related to the trawl. Trawl
Trawl
information is used for display of upper and lower trawl line in the echogram. All
received speed data are stored to file when recording of raw data to file is enabled.
To set up the interface parameters between the trawl or catch monitoring system and the
ES70, use the
Port Management
Note
You may wish to include trawl lines in the echograms. If the distance from the vessel to
the trawl is either manually set different from 0 (zero) in the
datagram contains a distance different from 0, you will need to enable the distance
counter on the Distance tab in the
on page 143.
Parameters
• : A fixed headrope-to-footrope distance can be manually entered. This
Trawl Opening
is used for sensor systems not measuring the trawl opening, or when the measured
headrope-to-footrope distance is unreliable.
• : A fixed distance between the vessel and the trawl opening can be
Distance To Trawl
manually entered. For highest accuracy, set the distance between the echo sounder
transducer's physical location and the trawl.
In order to enter this distance, the Distance counter on the
dialog must be enabled.
Navigation
→ Navigation; Distance tab on page 143
338106/A
button on the
Trawl
Description
A Simrad ITI (Integrated Trawl Instrumentation)
system can be connected to the ES70.
Communication with the ITI system is based on
NMEA telegrams, and all necessary parameters
are automatically defined. If another trawl or
catch monitoring system is used, and this system
does not provide the trawl opening and/or trawl
distance automatically, the values must be entered
manually.
dialog. For more information, see I/O Setup on page 150.
dialog. See Navigation; Distance tab
Navigation
Functions and dialogs
menu.
Setup
dialog, or the trawl
Trawl
tab in the
Distance
145