9
TVG
This function suppresses sensitivity shallower than approx. 100m and
eliminates reflected signal form plankton and air bubble. Stronger TVG is
set, sensitivity near sea surface decreases. When you make TVG too
strong, response near sea surface disappears. On the other hand, when
you make TVG too weak, response near sea surface becomes strong and
you can not judge the image in some case.
Set TVG on MENU 1: 0
～
40.
More details refer to How to get steady data in page 12.
Noise Rej.
The echo interferences of the same frequency transducers nearby are
eliminated.
Set Noise Rej. on MENU 1: Off, Low, High.
Color Del
This function facilitates clear observation by eliminate weak echo.
Set Color Del on MENU 2: 0
～
-12.
Palette
Reflected signals of sound wave are converted into 16 ranks of digital
signals according to the strength of response. 16 ranks of color are
arranged and it is called color configuration.
As image of fish finder is displayed in colors by this color configuration, you
can know the strength of response by displayed color. As display of
response varies by changing color configuration in Palette, it enables to
displayed color specially.
Set Palette in MENU 2: 0
～
6.
