Raymarine E90W, User Reference Handbook

Page: 182 / 250

Menu Item Description Options
Color Palette Various color palettes are available to suit different conditions
and your personal preferences. • Classic Blue
• Classic Black
• Classic White
• Sunburst
• Greyscale
• Inverted Greyscale
• Copper
• Night Vision
Manual Scroll Speed Specify the fishfinder scroll speed. 10 to 100%
Fishfinder preset configuration
Sonar frequency
The frequency of the sonar determines the width of the sonar beam,
the depth to which the signals will penetrate and the resolution
of the image. Each of the preset operating modes has its own
frequency settings.
The frequencies supported depend upon the DSM and transducer
connected to your system.
• Lower frequencies (e.g. 50 kHz) produce a wide sonar beam
and penetrate the water well. A lower frequency provides a lower
resolution image that may not be as good at detecting small fish.
Use lower frequencies if you require a large coverage beneath
your boat or if you are in deep water.
• Higher frequencies (e.g. 200 kHz) produce narrow beam
and produce a high resolution image. They are most useful in
shallower water (up to 1000 ft) and at higher speeds.
• Auto . When operating in automatic frequency the system will set
and adjust the frequency automatically to suit your transducer
and operating conditions.
Dual operation
For dual frequency operation you can set Frequency 2 for the
required preset operating modes.
Setting the fishfinder frequency
With the configure presets frequencies options you can:
• Specify one or two frequencies for each of the four presets.
• Edit preset names.
• Reset presets to factory defaults.
1. From the main fishfinder screen, press the MENU button.
2. Select Fishfinder Setup from the list of options.
3. Select Configure Preset Frequencies from the list of options.
182 E-Series Widescreen User reference