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Power On 1
How Sonar Works 2
DualBeam PLUS™ Sonar (DualBeamPLUS™ models only[386ci]) .............................. 4
Down Imaging™ Sonar
(DownImaging™models only[386ci DI])................................ 5
Dual Beam Ice Transducer
(optional-purchase XI9 20IceTransducer only) .................. 6
How GPS Works 7
What’s on the 300 Series™ Control Head 8
Key Functions 9
POWER/LIGHT Key .................................................................................................. 9
VIEW Key .............................................................................................................. 10
CHECK/INFO key .................................................................................................... 10
MENU Key ............................................................................................................ 10
4-WAY Cursor Control Key .................................................................................... 11
MARK Key .............................................................................................................. 12
GOTO Key................................................................................................................ 12
ZOOM (+/-) Key...................................................................................................... 12
EXIT Key ................................................................................................................ 13
SD Card Slot 14
Add Maps to Your Fishfinder ................................................................................ 15
Import Navigation Data.......................................................................................... 16
Export Navigation Data.......................................................................................... 16
Update Software .................................................................................................... 18
What’s on the Sonar Display 20
Understanding the Sonar Display.......................................................................... 22
Real Time Sonar (RTS™) Window ........................................................................ 22
Sonar Colors and Bottom View.............................................................................. 23
SwitchFire™............................................................................................................ 25
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