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To set the Sensitive:
1) Press Menu to enter into menu setting.
2) Repeatedly Press Menu to switch to SONAR menu.
3)
Use the Up / Down Arrow to select Sensitive option.
4) Press Ent to enter into setting.
5) Use the Up / Down Arrow to change the value.
6) Press Ent to confirm and exit the setting.
Note: the menu display will change from figure A to B as soon
as entering menu setting.
Noise Filter
Noise Filter is used to filter the noise from the air or water enviro-
ment to get a clear sonar image on the screen.
In many situations, your Fishfinder display will be effected by
undesired signal which maybe caused by your boat engine,
turbulence, wiring,or other electrical and mechanical sources.
Such
undesired signal
will produce unwanted mark on the screen,
which may cause a misunderstanding of the underwater
condition.
In such situations when you see too much clutter on the screen,
increasing the Noise Filter will play an effect. The larger the value
is, the more unexpected sonar returns will not be displayed.
If the Noise Filter is increased too hige, most sonar returns
(which maybe fish) will not be displayed.
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