11
SENSITIVITY
Thesensitivitymenuletsyoucontroltheunit’sabilitytopickupechoes. A
lowsensitivitylevelexcludesmuchofthebottominformation,fishsignals,
and other detail. High sensitivity settings lets you see features, but it can
also clutter the screen with noise and other unwanted signals. Typically,
the best sensitivity level shows a good, solid bottom signal with grayline.
The MagnaView adjusts the sensitivity level to keep a solid bottom signal
on the screen. It adds a little extra when it’s in the automatic mode. This
gives it the capability to show fish and other detail. However, situations
occurwhereitbecomesnecessarytoincreaseordecreasethesensitivity
level. Typically,thisoccurswhenyouwishtoseemoredetail,soyouneed
toincreasethesensitivity. Theproceduretoadjustitisthesamewhether
the unit is in the automatic or manual mode.
Tochangethesensitivitylevel,firstpressthe
menukeyuntilthesensitivitymenuappears.
If the unit is in automatic, the menu shows
“AUTOSENS.” Otherwise, themenu shows
“MANSENS.” Nowpresstheuparrowkeyto
increase the sensitivity, the down arrow to
decrease it. The percentage of sensitivity in
use shows in this menu. Echoes scrolling
onto the screen will also show the effects of
thesensitivitychange. Ifyoureachthemaxi-
mum or minimum sensitivity level, a tone
sounds alerting you to the limits.
Afteryou’veadjustedtheunittothedesiredsensitivitylevel,presstheON/
CLEAR key to clear the display. If you wait a few seconds, it will
automatically clear.
GRAYLINE ®
Graylineletsyoudistinguishbetweenstrongandweakechoes. It“paints”
gray on targets that are stronger than a preset level. This shows the
difference between a hard or soft bottom, large fish versus smaller ones,
or rocks and brush on the bottom. For example, a soft, muddy, or weedy
bottom returns a weaker signal which shows a narrow or no gray line. A
hard bottom returns a strong signal that causes a wide gray line.
If you have two targets of equal size, one with gray and the other without,
the target with gray is the stronger echo. This helps distinguish fish from
structure, or the larger fish from a smaller one.