Fishfinder Display Modes - Raymarine a Series Installation And Operation Instructions Manual

17.10 Fishfinder display modes

Selecting a fishfinder display mode
From the fishfinder application:
1. Select Menu.
2. Select Display Mode.
3. Select Select Mode:.
4. Select the required display mode:
• None
• Zoom
• * A-Scope
• * Bottom Lock
Note: * Not available on the DownVision
DownVision TM sonar modules.
Fishfinder zoom mode
The zoom display mode magnifies a region of the fishfinder
screen to display more detail.
This zoom option enables you to:
• Replace the standard fishfinder image with the zoomed image,
or display the zoomed image alongside the standard fishfinder
image.
• Set the zoom factor to a predefined level, or adjust it manually.
• Reposition the zoomed portion of the image to a different point
in the display.
When the range increases, the area shown in the zoom window
also increases.
Zoom split
With the zoom display mode you can split the screen and
display the zoomed image alongside the standard fishfinder
image (ZOOM SPLIT). The zoomed section is indicated on the
standard fishfinder screen by a zoom box.
Selecting split screen in zoom mode
From the fishfinder application, with the zoom display mode
selected:
1. Select Menu.
2. Select Display Mode.
3. Select Zoom so that Split is highlighted.
Selecting Zoom will switch between Split and Full.
Adjusting the fishfinder zoom factor
When the display mode is set to Zoom, you can select a zoom
factor or adjust it manually.
From the Fishfinder application, with the display mode set to
Zoom.
1. Select Menu.
2. Select Display Mode.
3. Select Zoom Factor.
4. Select a preset Zoom Factor (x2, x3, x4) or select Manual
Once selection is made you will be returned to the Display
Mode menu.
5. If Manual is chosen select Manual Zoom
The manual zoom factor numeric adjust dialog is displayed.
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6. Adjust the setting to the required value.
7. Select Back or use the Ok button to confirm the setting.
Adjusting the position of the fishfinder zoomed area
When the Zoom display mode is selected, the system
automatically selects a zoom position so that the bottom details
are always shown in the lower half of the screen. If required, you
can reposition the portion of the image to be zoomed so that an
alternative area is displayed.
From the Fishfinder application, with Zoom display mode
selected:
1. Select Menu.
2. Select Display Mode.
3. Select Zoom Position so that Man is selected.
TM channel on
4. Select Man Zoom Pos:.
5. Adjust the setting to the required value.
6. Select Back or Ok to close the menu.
Fishfinder A-Scope mode
The A-Scope mode enables you to view a live (rather than
historical) image of the seabed and fish directly below your
vessel.
The standard fishfinder display shows a historical record of
fishfinder echoes. If required, you can display a live image of the
bottom structure and the fish directly below the transducer by
using the A-Scope feature. The width of the bottom covered by
the A-Scope is indicated at the bottom of the window. A-Scope
provides a more precise and easier to interpret indication of the
target strength.
There are three A-Scope modes:
The A-scope image is
centred in the window.
The numbers displayed at the bottom when in A-Scope mode
indicate the approximate diameter (in selected depth units) of
the conical beam's coverage of the bottom.
Selecting A-Scope mode
From the fishfinder application, with the A-Scope display mode
selected:
Selecting the zoom position will switch between Man and
Auto.
The Zoom position numeric adjust control is displayed.
Mode 1 Mode 2
The left-hand side of
the Mode 1 image is
expanded to give a
more detailed view.
Mode 3
The A-scope image
angles outward as
signal width increases
with depth.
a Series / c Series / e Series