When zooming in, the sea floor is kept near the bottom of the screen, irrespective of whether
it is in auto-range or manual range.
If the range is set considerably less than the actual depth, the unit is not able to find the
bottom when zooming.
You can also zoom the image as a split screen and display zoom bars. Refer to split screen
"Zoom" on page 17.
Frequency
The unit supports several transducer frequencies. Available frequencies depend on the
transducer model that is connected.
Frequency is the ‘tone’ the transducer transmits. Transducers are designed to operate on
different frequencies as the various frequencies have different qualities.
To set the frequency, you have two options:
• Press the Frequency softkey once to activate it and then turn the rotary knob to activate
and select a frequency.
• Press the Frequency softkey twice to display the pop-up. Turn the rotary knob to activate
a frequency in the pop-up and then press Enter or the rotary knob to select it.
Gain
The gain controls the sensitivity. The more you increase the gain, the more details are shown
on the image. However, a higher gain setting may introduce more background clutter on the
image. If the gain is set too low, weak echoes might not be displayed.
To set the Gain, press the Gain softkey once and turn the rotary knob to adjust the gain
value.
Auto gain
The Auto gain option keeps the sensitivity at a level that works well under most conditions.
With the gain in auto mode, you can set a positive or negative offset that gets applied to the
auto gain.
To set the Gain to auto, press the Gain softkey twice to display the pop-up. Turn the rotary
knob to activate the Auto pop-up and press the Enter key or rotary knob to select it. A
check-mark is displayed in the check-box when it is selected. Or press-and-hold the Gain
softkey to toggle Auto gain on/off.
To set a positive or negative offset to auto gain with auto selected, turn the rotary knob to
adjust the auto value.
Color
Strong and weak signals have different colors to indicate the different signal strengths. The
colors used depend on which palette you select. The more you increase the Color setting,
the more echoes are displayed in the color at the strong return end of the scale.
To set the Color, press the Color softkey once and turn the rotary knob to adjust the value.
Setting up the image | S2009-2016 Fish Finder User Manual
15
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