User manual - JG Technologies

14.5 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
in use on your system.
• Auto. When operating in automatic frequency the system will set
and adjust the frequency automatically to suit your transducer
and operating conditions.
• 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 vessel 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.
Setting the fishfinder frequency
With the Adjust Preset menu options you can:
• Configure one or two frequencies for each of the four presets.
• Select a display mode.
• Edit preset names.
• Reset presets to factory defaults.
1. From the fishfinder application select Menu.
2. Select Adjust Preset , where is the preset
already selected.
3. Select Configure Frequencies.
4. Select Select Frequency 1 or Select Frequency 2 as required.
5. Select the required frequency: Auto, low frequency or high
frequency
6. You can also manually adjust the frequency by selecting the
relevant Tune Frequency option.
The Tune Frequency menu is displayed
7. Select the Tune Frequency so that Man is highlighted
Selecting Tune Frequency will switch between Auto and Manual.
8. Use the Rotary Control to adjust the frequency to the required
setting.
Changing fishfinder preset names
From the fishfinder application:
1. Select Menu.
2. Select Adjust Preset , where is the preset
already selected.
3. Select Edit Name.
4. Select the required characters.
5. Select Save to save the new preset name.
14.6 Fishfinder display modes
Selecting a fishfinder display mode
From the fishfinder application:
1. Select Menu.
2. Select Adjust Preset , where is the preset
already selected.
3. Select Display Mode.
4. With dual frequency preset, select Adjust to select which
frequency display you wish to change.
Selecting Adjust in Dual frequency preset will switch between
Frequency 1 and Frequency 2.
5. Select Select Mode.
6. Select the required display mode:
• None
• Zoom
• Bottom Lock
• A-Scope
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 zoom split screen
From the fishfinder application, with Zoom preset selected:
1. Select Menu.
2. Select Adjust Preset , where is the preset
already selected.
3. Select Display Mode.
4. Select Zoom so that Split is highlighted.
Selecting Zoom will switch between Split and Full.
Adjusting the fishfinder zoom factor
When the zoom function is active (Zoom Full or Zoom Split), you
can either select a predefined zoom factor or adjust it manually.
From the fishfinder application, with Zoom preset selected:
1. Select Menu.
2. Select Adjust Preset , where is the preset
already selected.
3. Select Display Mode.
4. Select Zoom Factor.
Using the fishfinder 161