Simrad ES80 Reference Manual page 418

Simrad ES80 Reference Manual
•
School (20 log R)
This gain setting offers weaker amplification close to the bottom. It has been
designed to provide the best echoes for schools. The physical size of a school
allows you to detect it even with reduced gain.
•
Fish (40 log R)
This gain setting provides larger amplification closer to the bottom. It has been
designed to provide the best echoes from single fish.
•
Targets (40 log R)
This setting uses the same TVG amplification as
filtering and compensation is implemented.
Only echoes detected and interpreted as single fish are shown. The echoes are
compensated for their physical position in the beam (beam compensation).
This means that fish in the outer region of the beam are adjusted to correct size
even though their echoes are weaker.
Note
This TVG setting only works with split beam transducers.
•
Target Mix (40 log R)
This setting uses the same TVG amplification as
beam compensation is implemented. Echoes detected and interpreted as single
fish are adjusted to their correct size according to their physical position in
the beam.
Note
This TVG setting only works with split beam transducers.
•
User
This setting allows you to define your own TVG setting. To choose your own
TVG curve, use the dedicated function in the
Note
The setting you choose will only be valid for the currently "active" echogram. The
"active" echogram view is identified with a thicker border. Normally, you must first
click in the chosen echogram to "activate" it, and then choose the setting you
wish to use.
Apply to All
Select this box to use the chosen setting on all the echograms of the same type.
416
, but additional
Fish (40 log R)
, but additional
Fish (40 log R)
dialog box.
Echogram
406273/C