Table of Contents | Humminbird 981 specs

98x_Manual_531376-1_A.qxd 2/23/2005 11:39 AM Page 3

TABLE OF CONTENTS

900 Series™ Introduction	1
How the 900 Series™ Works	1
Side Imaging Sonar	1
DualBeam PLUS™ Sonar	1
GPS and Cartography (987c SI Combo models only)	2
Multi-Media Card (MMC)/SD Slot	2
Accessory Bus	3
Installation Overview	3
Control Head Installation	4
Gimbal Mounting the Control Head	5
In-Dash Mounting the Control Head	8
Connecting the Control Head Power Cable to the Boat	10
Transducer Installation	11
Transom Transducer Installation	12
Trolling Motor Transducer Installation	16
Test and Finish the Transducer Installation	17
GPS Receiver Installation (987c SI Combo models only)	18
Stem Mounting with an Existing 1" - 14 Thread Stem	18
Access Under Mounting Location	19
No Access Under Mounting Location	19
Finish Routing the Cable and Check GPS Receiver Operation	20
Speed Accessory Installation	20
Testing the System Installation	22

Getting Started - Using Your 900 Series™	23
Powering Up the Control Head	23
What’s on the Sonar Display	24
Understanding Sonar History	25
Real Time Sonar (RTS®) Window	25
Sonar Bottom Presentation	25
Understanding Side Imaging	26
What’s on the Side Imaging Display	27
Side Imaging Technology: How It Works	28
Side Imaging: On the Water Interpretation	28
Key Functions	31
POWER/LIGHT Key	31
VIEW Key	31
MENU Key	31
4-WAY Cursor Control Key	32
View Preset Keys	32
EXIT Key	32
INFO Key (987c SI Combo models only)	32
MARK/GOTO Key (987c SI Combo models only)	33
ZOOM (+/- Key) (987c SI Combo models only)	33
Views	33
Views and Readouts	34
Sonar View	34
Sonar Zoom View	35
Split Sonar View	36
Side Imaging View	36
Side/Sonar Combo View	37
Bird’s Eye View (987c SI Combo models only)	38

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Humminbird 981 manual Table of Contents

Contents

98xManual531376-1A.qxd 2/23/2005 1139 AM Thank You Table of Contents Sonar Menu Tab Menu System Start-Up Options MenuSonar X-Press Menu Side Imaging X-Press Menu Setup Menu Tab Alarms Menu Tab Contact Humminbird Views Menu Tab Accessories Menu Tab Troubleshooting Dualbeam Plus Sonar Series IntroductionHOW the 900 Series Works Side Imaging Sonar Multi-Media Card MMC/SD Slot MULTI-MEDIA Card MMC/SD Slot Accessory BUS Installation OverviewAccessory Bus 900 Series has a wide variety of configurations Control Head Installation Gimbal Mounting the Control Head Mounting Screws Washer Gimbal Mounting Bracket Speed Communications Transducer Cable Collector Insert Cables Routed Near Mounting Bracket In-dash mounting template IN-DASH Mounting the Control HeadParts and tools specific to In-dash mounting are In-dash mounting foam pads 23/2005 Beginning of this procedure Connecting the Control Head Power Cable to the Boat Transducer Installation Transom Transducer Trolling Motor TransducerMotor Position Stepped Hull Transom Transducer Installation Not a hull, motor, or other transducer, etc Without deadrise adjustment Be fully tightened until all adjustments are made Headed pin can be inserted from either side of the bracketCompletely tighten Normal Cavitation Force is necessary to pivot the assembly Trolling Motor Transducer Installation Hand-tighten only Test and Finish the Transducer Installation To the cable as shown Follow these steps to stem mount the GPS receiver Access Under Mounting Location No Access Under Mounting LocationAccess Under Mounting Location Finish Routing the Cable and Check GPS Receiver Operation Speed Accessory Installation Hand tighten only Install the Speed accessory Rotating Retaining Axial Clip to Remove Paddlewheel Testing the System Installation Getting Started Using Your 900 Series Powering UP the Control Head Triplog WHAT’S on the Sonar Display Understanding Sonar History Real Time Sonar RTS WindowSonar Bottom Presentation KHz provides highest resolution with 160 total beam width Understanding Side ImagingKHz provides maximum coverage with 180 total beam width Topography Changes Bottom Return Triplog WHAT’S on the Side Imaging Display Side Imaging Technology HOW IT Works Side Imaging on the Water InterpretationSide Imaging Representation Submerged Ravine with Timber Submerged Swimming Pool Submerged Standing and Fallen Timber, Plus Bait Fish Menu KEY POWER/LIGHT KEYKEY Functions View KEY Info KEY View Preset KeysWAY Cursor Control KEY Exit KEY Sonar views ViewsMARK/GOTO KEY Views available on your 900 Series are Views and Readouts Sonar ViewSonar View Sonar Zoom View Sonar Zoom View Side Imaging View Split Sonar ViewSide Imaging View Split Sonar View Side/Sonar Combo View SIDE/SONAR Combo View Bird’s Eye View Chart/Bird’s Eye Combo View Chart/Sonar View Chart View with Active Cursor Chart/Side Combo View CHART/SIDE Combo View Navigation Chart View with Cursor Present Waypoints, Routes and Tracks WAYPOINTS, Routes and Tracks Navigate to a Waypoint or Position Chart View with Target Chart View with GridADD a Waypoint Target or Trolling Grid SAVE, Edit or Delete a Route Press Menu Menu System Start-Up Options Menu Sonar Tab, Normal Mode Sonar Tab, Advanced ModeSTART-UP Options Menu Normal Simulator System Status System Status Self Test Accessory Test GPS Diagnostic ViewNormal Operation Simulator Accessory Test Accessory Test ScreenGPS Diagnostic View Split Position To Adjust Split Screen PositionSonar X-PRESS Menu Active Side Upper Range To adjust the SensitivityTo adjust the Upper Range Sensitivity Chart Speed Lower RangeZoom Level Bottom Lock Bottom RangeSonar Colors Highlight Split Position on the Side Imaging X-Press Menu Side Imaging Views onlySide Imaging X-Press Menu SI Side SI SensitivitySI Range Highlight SI Colors on the Side Imaging X-Pressmenu SI ColorsNavigation X-PRESS Menu To change the SI Colors To Clear Current Track Save Current TrackClear Current Track To Save Current Track Remove Target Cancel NavigationSave Current Route Skip Next Waypoint Only if a Grid is active Remove GridSonar Menu TAB To Remove a Grid Beam Select Side View FrequencyFish ID+ Highlight Fish ID Sensitivity on the Sonar main menu To change the Fish ID Sensitivity settingFish ID Sensitivity To turn Fish ID+ on or off Zoom Width To change the RTS Window settingTo adjust the Bottom View Bottom View Noise Filter KHZ SensitivityDepth Lines Surface Clutter MAX Depth Water TypeColor BAR Navigation Menu TAB Temperature GraphTo change the display of the Temperature Graph Sonar View only, with Temperature input Tracks WaypointsRoutes Trackpoint Interval Chart OrientationNorth Reference Trolling Grid Rotation Delete ALL NAV Data Track MIN DistanceMAP Datum Export ALL NAV Data MAP Borders Chart Menu TABChart Detail Level To change the Chart Detail Level setting SET Simulation Position LAT/LON GridSpot Soundings Shaded Depth Clear MAP Offset Alarms Menu TABTo change the Map Offset setting SET MAP Offset Temp Alarm Depth AlarmFish ID Alarm LOW Battery Alarm OFF Course Alarm Arrival AlarmDrift Alarm Highlight Alarm Tone on the Alarms main menu Alarm ToneSetup Menu TAB To change the Alarm Tone setting Units Speed Units DepthUnits Temp Units Distance Language User ModeTriplog Reset Restore Defaults Select Readouts Default Sonar View Temp Offset To change the Depth Offset settingTo change the Temp Offset setting Depth Offset Position Format Speed CalibrationLocal Time Zone Daylight Saving Time Time Format Date FormatNmea Output To Change the View Status of Any View Views Menu TABTo turn Sonar on or off Following views are available Series Defaults to Simulator with a Transducer Attached Accessories Menu TABTroubleshooting Series Doesn’t Power Up Control head loses power at high speeds Display Problems Boat’s engine Finding the Cause of NoiseOther electronic devices Noise re-appears Humminbird Service Policy Year Limited Warranty Returning Your Unit for Service Series AccessoriesFor IN-WARRANTY service, complete the following steps Area of Coverage Specifications Transducer Mounting Template XHS-9-SI-160-T Appendix a Contact Humminbird