Simrad PI44
94
850-165085 / Rev.B
How to zoom in on pelagic echoes
The
Zoom
functions allows you to zoom in on echoes in the
water column.
When this function is active, the echo sounder presentation is
split in two. The upper part is the ordinary presentation, while
the lower part shows the expansion window with the echoes
over and under a reference depth.
Activate Zoom
1
Make sure that your echo sounder presentation is in an
active window.
2
Press the
Zoom
button.
If you were operating the echo sounder in
Phased range
mode
when you pressed the
ZOOM
button, the echo sounder will
automatically switch to
Standard
mode and use the applicable
depth range.
Change the reference depth
1
Press “up” and “down” on the
Selector pad
to change the
reference depth.
The depth you select will be stored by the echo sounder. The
next time you activate the
Zoom
, it will autmatically use this
reference value.
Change the range in the expansion window
1
Press the
ADJ
button to open the
Echo presentation
setup
.
2
Locate the
Expansion window
parameter, and change its
value.
3
Press the
ENT
button save the setting and return to the
echo sounder presentation.
De-activate Zoom
1
Press the
STND
button to return to
Standard
mode, or
2
Press the
SHIFT
button to return to
Phased range
mode.
Related topics
→
Echo presentation setup, page 177
