Magic Grayline Magic Grayline is used to let you see both strong and weak signals on the display If Magic Grayline is “inversed”, weak returns will be shown with dark pixels and strong returns with lighter pixels. This is very helpful of ensuring that weak signals will be clearly visible on the display; If Magic Grayline is “on”, strong returns will be shown with dark pixels and weak returns with lighter pixels. This is very helpful of ensuring that strong signals will be clearly visible on the display; To set the Magic Grayline: 1) Press Menu to enter into menu setting. 2) Repeatedly press Menuto switch to SONAR menu. 3) Use the Up / Down Arrow to select Magic Grayline option. 4) Press Ent to enter into setting. 5) Use the Up / Down Arrow to select the option. 6) Press Ent to confirm the setting. 7) Press Exit to exit the setting. Fish ID Sens. Fish ID Sens. is used to adjust the threshold of fish size detection. If you select a higher setting, then some weaker returns can be detected and displayed as small fish on screen, which will be very helpful when you are intending to identify small fish species. If you select a lower setting, then only strong returns can be detected and displayed as big fish on screen, which will be very helpful when you are intending to catch larger fish species.
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