Humminbird 917C, 957C 900 Series Introduction 1, Installation Overview 5 Control Head Installation 6, Transducer Installation 12, GPS Receiver Installation 25, Testing the System Installation 29 Getting Started - Using Your 900 Series 30, Key Functions 33

Table of Contents
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900 Series™ Introduction 1
How Sonar Works .......................................................................................................... 1
DualBeam PLUS™ Sonar .............................................................................................. 2
QuadraBeam PLUS™ Sonar
(Standard with 957c Combo models, optional-purchase for 917c Combo models only) ........ 3
Universal Sonar 2 ............................................................................................................ 3
How GPS and Cartography Work .................................................................................. 3
Multi-Media Card (MMC)/SD Slot.................................................................................. 5
Software Updates............................................................................................................ 5
Accessory Bus .................................................................................................................. 5
Installation Overview 5
Control Head Installation 6
Gimbal Mounting the Control Head .............................................................................. 7
Connecting the Control Head Power Cable to the Boat ............................................ 11
Transducer Installation 12
Transom Transducer Installation .................................................................................. 13
Inside the Hull Transducer Installation ...................................................................... 21
Trolling Motor Transducer Installation ........................................................................ 24
Trolling Motor Transducer Options .............................................................................. 25
GPS Receiver Installation 25
Stem Mounting with an Existing 1" - 14 Thread Stem .............................................. 26
Access Under Mounting Location................................................................................ 27
No Access Under Mounting Location.......................................................................... 27
Finish Routing the Cable and Check GPS Receiver Operation .................................. 28
Testing the System Installation 29
Getting Started - Using Your 900 Series™ 30
Powering Up the Control Head .................................................................................... 30
What’s on the Sonar Display ...................................................................................... 31
Understanding Sonar History ...................................................................................... 32
Real Time Sonar (RTS®) Window.................................................................................. 32
Bottom Presentation...................................................................................................... 32
Key Functions 33
POWER/LIGHT Key ........................................................................................................ 33
VIEW Key........................................................................................................................34
MENU Key...................................................................................................................... 34
4-WAY Cursor Control Key ............................................................................................ 35
View Preset Keys............................................................................................................ 35
EXIT Key.......................................................................................................................... 35
INFO Key ........................................................................................................................36
MARK Key ...................................................................................................................... 36
GOTO Key ........................................................................................................................ 36
ZOOM (+/-) Keys............................................................................................................ 37
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