Simrad ES70 - REFERENCE MANUAL REV A Reference Manual page 50

Simrad ES70
The hardness line is enabled in the
→ Bottom Hardness information pane on page 52
→ How to establish horizontal markers on page 71
→ Hardness line on page 212
→ Echogram; Lines tab on page 159
Trawl line
Whenever available and connected, trawl systems (PI and ITI) communicate headrope
depth and/or headrope-to-footrope distance to the ES70 at regular intervals. The
information from these sensors are drawn as horizontal lines on the ES70 echogram.
The trawl line is enabled in the
→ How to establish horizontal markers on page 71
→ Echogram; Lines tab on page 159
Variable Depth line
When enabled a horizontal depth line is placed wherever you click in the echogram. This
is typically used to measure the water depth, the depth of a school, or even single fish.
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The hardness line is an extra thick colour coded
line that is added to just below the bottom. The
line will not remove information, it will simply
"push" the information further down in order to
make the bottom easier to see. The colour coding
contains the hardness information.
The hardness line can not be used simultaneously
with the white line.
dialog.
Echogram
dialog on the
Echogram
You can click on the line, and then drag it up or
down.
The variable depth line is enabled in the
dialog on the
Active
menu.
Active
menu.
Echogram
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