7. FISH FINDER (SOUNDER)
7-8
There are two types of automatic gain adjustment, fishing and cruising.
[Auto Fishing]: The gain is automatically adjusted to emphasize weak echoes from
schools of fish. Use this mode for fishing. Select from the Layers menu. When this
mode is active, the indication [Gain Auto F] appears at the bottom left corner.
[Auto Cruising]: The gain is automatically adjusted to suppress weak echoes and
emphasize the bottom echo. Use this mode for cruising. Select from the Layers
menu.When this mode is active, the indication [Gain Auto C] appears at the bottom
left corner.
To select an automatic gain adjustment mode, open the Layers menu, then tap [Auto
Fishing] or [Auto Cruising] as appropriate.
7.5.2 Manual gain adjustment
To adjust the gain manually, open the Layers menu, then activate [Manual Gain] at
[Gain Mode].
The gain controls how echoes of different strengths are displayed. Set the gain to
show a slight amount of noise on the screen. Increase the gain for greater depths and
lower the gain for shallow waters. The figures below show examples for gain set too
high, too low and with a proper setting, for reference.
You can adjust the gain two ways.
Method 1: Layers menu
1. Open the Layers menu, then tap [xx kHz Gain].
xx=transducer frequency, according to transducer
used.)
2. Using the slider bar at right edge of the screen,
drag the handle or tap the [+] or [-] symbol to adjust
the gain. The gain setting is applied to both current
and past echoes.
3. Tap [Done] at the top of screen to finish.
Method 2: Two finger tap
Note: Set [Two Finger Tap Function] (or [Two Finger
Long Tap Function]) to [Gain Control] in the [General]
menu to enable on-screen gain adjustment. See section 1.16.
Tap (long tap) the screen with two fingers to show the Gain slider bar. Adjust the slider
bar referring to the illustration above.
Gain too high
Gain proper
Gain too low
Current
setting
Done
Drag the drag
handle or tap
[+] or [-] symbol.
Gain (HF)
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