?
More information.....
See the 'Using the Fishfinder' chapter of the Reference Manual.
D6735_3
What influences target display?
The shape and size of echoes indicating targets, is influenced by a combination of:
Boat speed - flatter at slower speeds Transducer frequency - broader at lower levels
Target depth - larger near the surface Target size - larger targets return larger echoes
Dark layers indicate strong signals; lighter layers weaker signals.
A thin line indicates a hard
bottom (sand)
How do I interpret the bottom?
Peaks and troughs, indicate an
uneven or rocky bottom or a
wreck
A wide line indicates a soft
bottom (mud or seaweed
cover)
6869
50
TRANSDUCER
SETTINGS…
ZOOM… BOTTOM LOCK… A-SCOPE… PRESENTATION…
200 kHz: Auto
Gain: Auto High
Depth
markers
Target
Bottom
Bottom of
transducer
Frequency
Gain mode
Frequency mode
Target
depth
Bottom
depth
What can I see on the screen?
What's under the boat?
The fishfinder application, when connected to a suitable Digital Sounder Module (DSM) and transducer,
will help you to see fish, bottom structure and underwater obstructions. The image scrolls from right to
left at an automatically selected range and frequency to provide a record of the echoes seen. You can
mark with a waypoint any positions of interest that you may wish to return to. These waypoints are
added to the waypoint list and can be used by other applications in your E-Series display.
What's under the boat?
Understanding the fishfinder
Card No. 13
TRANSDUCER
SETTINGS
ZOOM BOTTOM LOCK A-SCOPE PRESENTATION
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