Simrad GB40, Manual

Page: 103 / 156

It's useful to have the depth line On.
¾
To select a split zoom pane:
•
Display the Echosounder pane and the main menu. If you can't
see the
Range, Zoom and Split
button, select
Return
.
•
Select
Range, Zoom and Split
. The
View Mode
button
shows the current setting. Select it to change the setting.
•
Select
Zoom
.
The history is on the right side. The zoomed area of water is on
the left side. The numbers at the top and bottom of the
zoomed area show the upper and lower depths of the zoomed
area.
7.21 Echosounder: Split bottom lock
Split bottom lock ensures that the bottom is ALWAYS shown on the
Echosounder pane, regardless of any changes in depth.
You can use the split bottom lock screen to zoom in on the bottom
so that you can easily compare different echo strengths. This can
be helpful if you're trying to identify the type of bottom or locate
objects on, or close to, the bottom.
¾
To show and adjust the split bottom lock pane:
•
Display the Echosounder pane and the main menu. If you can't
see the
Range, Zoom and Split
button, select
Return
.
•
Select
Range, Zoom and Split
.
•
The
View Mode
button shows the current setting. Select it to
change the setting.
•
Select
Bottom
.
◦
The history is on the right side with the bottom always in
view.
◦
The zoomed area of bottom in the left side.
◦
The numbers at the top and bottom of the zoomed area
show the extent of the zoomed area of bottom. The lower
number may show a negative reading, indicating that this
area lies within the bottom.
Note: If the A-scope is already shown, this will also be shown
on the split screens too.
102 | Echosounder