Haiyang HFF-650, Manual

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Operation
4. Rejection
▶ [MENU] -> 4. Rejection
4-1. Interference Rejection (from engine)
When there are another boats around you on sailing, your sounder could be disturbed to work. The
step of the function is from off to level 2. The bigger number, the more rejection.
( ☞ The default setting is OFF.)
4-2. Noise Rejection
Your Fishfinder could be disturbed by the engine noise. This function can reject the noise from the
engine or other machinery instruments.
( ☞ The default setting is OFF.)
5.Color
▶ [MENU] ->5. Color
5-1. Bottom enhance
This function adjusts the colors. Make it upper level, the color becomes darker.
( ☞ The default setting is 0.)
5-2. Color Rejection
There are 16 color levels for fishfinder. The color bar is on the left of the Fishfinder. If the level is higher,
the color of the bar is deleted one by one.
5-3. Screen Color
Select the back ground color of the Fishfinder for your convenience.