the display.
Black displays all pixes below the bottom contour as black, regardless of signal
strength. This has the benefit of providing a high contrast between the bottom and
other sonar returns on the display.
White Line highlights the strongest sonar returns in white resulting in a distinctive
outline. This has the benefit of clearly defining the bottom on the display.
Inverse is a method where weak returns are shown with dark pixels and strong
returns with lighter pixels. This has the benefit of ensuring that weak signals will be
clearly visible on the display.
BUZZER
press the power-key until buzzer appears,select either on or off, when you select off,
all of the alarm sound will be shut down
LIGHT
Press the POWER-MENU key until LIGHT appears. Use the backlight for night
fishing. Select a setting of all off or side on, top on,bottom on 7 to activate the
backlight at the desired level. when all 8-ledlight feature on, this feature will greatly
reduce the battery life of the unit. so it should only be used during low light condition
or only open side light.
Maintenance
Follow these simple procedures to ensure your FF918 continues to deliver top
performance.
If the unit comes into contact with salt spray, wipe the affected surfaces with a cloth
dampened in fresh water.
Do not use a chemical glass cleaner on the less - this may cause cracking in the lens.
When cleaning the LCD protective lens, use a chamois and non-abrasive, mild
cleaner. Do not wipe while dirt or grease is on the lens. Be careful to avoid scratching
the lens.
If your boat remains in the water for long period of time, marine growth can reduce
the effectiveness of the transducer. Periodically clean the face of the transducer with
liquid detergent.
If your boat remains out of the water for a long period of time, it may take some time
to wet the transducer when returned to the water. Small air bubbles can cling to the
surface of the transducer and interfere with proper operation. These bubbles
dissipate with time, or you can wipe the face of the transducer with your fingers after
the transducer is in the water.
LI
GHT
OFF
BUZZER
ON
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