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Humminbird ] 981, Installation & Operation Manual

The Humminbird 981 is a high-tech fish finder with advanced features for avid anglers. To get the most out of your device, be sure to download the Installation & Operation Manual for free from our website. This comprehensive manual will guide you through setting up and using your Humminbird 981 effectively.

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CHART MENU TAB

(987c SI Combo Models only)

Press the MENU key twice to access the Main
Menu System and then press the RIGHT Cursor
key to select the Chart tab.

NOTE:

Menu choices will vary depending on system

settings such as whether the unit is set for Advanced
User mode.

NOTE:

This menu tab only appears on 987c SI Combo

models.

CHART DETAIL LEVEL

Chart Detail Level 

allows you to select how

much chart detail you want displayed on the Navigation Views. Basic shows land
areas, ports, obstructions and restricted areas. Navigation shows navaids, landmarks,
ferryways and navigation routes in addition to the Basic information. Underwater
shows depth contours, fishing areas, underwater wrecks, tides and currents in addition
to the Basic and Navigation information. All shows roads, buildings, railways, and
other notations in addition to the Basic, Navigation and Underwater information.

To change the Chart Detail Level setting:

1.  Highlight Chart Detail Level on the Navigation main menu.

2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Chart Detail

Level setting. (Basic, Navigation, Underwater, All, Default = All)

NOTE: 

Some chart details are only available with optional-purchase MMC/SD cards. 

MAP BORDERS

Map Borders 

allows you to display or hide

map borders. A Map Border indicates an area which contains a different map.

To change the Map Borders setting:

1.  Highlight Map Borders on the Navigation main
menu.

2. Use the LEFT or RIGHT 4-WAY Cursor Control
keys to change the Map Borders setting. (Hidden,
Visible, Default = Hidden) 

Map Borders

Chart Menu

69

98x_Manual_531376-1_A.qxd  2/23/2005  11:41 AM  Page 75

Summary of Contents for ] 981

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

Page 2: ...d as a navigational aid to prevent collision grounding boat damage or personal injury When the boat is moving water depth may change too quickly to allow time for you to react Always operate the boat...

Page 3: ...ing 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...

Page 4: ...SI Combo models only 49 Sonar X Press Menu 50 Active Side 50 Split Position 50 Sensitivity 51 Upper Range Advanced Sonar Split Sonar and Active Sonar Side Views only 51 Lower Range 52 Chart Speed 52 Z...

Page 5: ...etail Level 69 Map Borders 69 Lat Lon Grid 70 Spot Soundings 70 Shaded Depth 70 Set Simulation Position Advanced 70 Set Map Offset Advanced 71 Clear Map Offset Advanced 71 Alarms Menu Tab 71 Depth Ala...

Page 6: ...Series Accessories 86 Specifications 87 Appendix A Transducer Mounting Template XHS 9 SI 160 T 88 Contact Humminbird 89 NOTE Entries in this Table of Contents which list International Only are only av...

Page 7: ...ze and composition of an object Sonar is very fast A sound wave can travel from the surface to a depth of 240ft 70m andbackagaininlessthan ofasecond Itisunlikelythatyourboatcan outrun this sonar signa...

Page 8: ...he next NOTE Onlythe987cSICombomodelssupportNavionics GoldChartsmarinecartography and Navionics HotMaps 2004 Gold for inland fishing The 900 Series does not support Navionics Classic Charts The 987c S...

Page 9: ...ense and the SmartCast Wireless Sonar Link Additionaltabsandmenuchoiceswillbeadded to the menu system automatically when an accessory is plugged into the unit In addition multipleaccessoriescanbeattac...

Page 10: ...ece kick up mounting bracket In addition ifyoupurchaseda987cSICombomodel youwillwanttoinstalltheincluded GPS antenna NOTE Accessories may require a separate purchase You can visit our website at www h...

Page 11: ...ss hole behind the bracket and will need to mount the hole cover there instead NOTE When drilling holes in fiberglass hulls it is best to start with a smaller bit and use progressively larger drill bi...

Page 12: ...the cables through the grommet and pressing the grommet into place Place the hole cover over the mounting surface hole then use it to mark the position of the two mounting screws Remove the hole cove...

Page 13: ...the blank plugs to protect the control head from the weather Cable Collector Insert 1 Screws 2 Cable Collector Cover Tab on Insert Slot on Cover 3 1 2 3 Power 1 Speed 2 Communications Transducer 4 Ca...

Page 14: ...placing the components on the surfaces where you intend to install them before installation Make sure that the surfaces you have chosen provide adequate protection from wave shock and that all cables...

Page 15: ...into place on the insert NOTE The tab on the cable collector insert goes into the slot on the cover 8 Attach the cable collector insert to the cable collector cover using the 2 Phillip screws provided...

Page 16: ...the fuse panel Attach the black wire to ground and the red wire to positive 12 VDC power 1b If you need to wire the control head directly to a battery obtain and install an inlinefuseholderanda2 5to3A...

Page 17: ...side beams The Side Imaging transducer has some special requirements because of its side viewing capabilities The Side Imaging transducer must NOT have anything obstructing the view of the side lookin...

Page 18: ...aking the outer coating Fill all holes with marine grade silicone sealant WARNING Do not touch an active transducer during operation as this may cause physical discomfort and may result in personal in...

Page 19: ...ontrol head to maintain the sonar signal If the transom is behind the propeller s it may be impossible to find an area clear from turbulence and a different mounting technique or transducer type shoul...

Page 20: ...1 Slide the assembled transducer into the metal bracket from the bottom aligning the large hole at the top of the bracket with the hole in the pivot 2 Insert the headed pin through the pivot holes in...

Page 21: ...t all mounting screws are fully tightened To route the transom transducer cable The transducer cable has a low profile connector that must be routed to the point where the control head is mounted Ther...

Page 22: ...en finalize the installation see Test and Finish the Transducer Installation TROLLING MOTOR TRANSDUCER INSTALLATION If you want to install the transducer on a trolling motor use this procedure Several...

Page 23: ...fully submerged since the sonar signal cannot pass through air 4 If the unit is working properly gradually increase the boat speed to test high speed performance If the unit functions well at low spee...

Page 24: ...mcablelength includingextensions shouldnotexceed50 15m NOTE Remember to caulk or seal screw holes and drilled holes as needed to protect your boat from water damage 2 Screw on the receiver base to the...

Page 25: ...ute the cable to the side because there is no space for a cable underneath the mounting location 1 Determine the best location then test route the cable from the mounting location to the control head...

Page 26: ...cable into the Communications port on the control head See Testing the System Installation to use the System Status start up option and or the GPS Diagnostic View to confirm a good installation SPEED...

Page 27: ...provided Hand tighten only Routing the speed cable to the control head 1 You may route the cable over the top of the transom or drill a 5 8 16 mm diameter hole in the transom directly above the modul...

Page 28: ...Use the UP or DOWN 4 WAY Cursor keys to position the cursor then the RIGHT Cursor key to select System Status from the Start Up Options menu see the Start Up Options Menu section for more information...

Page 29: ...ies control head by pressing the POWER key The Title screen is displayed until the 900 Series begins operation Your 900 Series will begin Normal or Simulator operation depending on the presence or abs...

Page 30: ...istance traveled with Speed accessory or GPS Receiver 3 Average Speed Average speed reading with Speed accessory or GPS Receiver 4 Thermoclines layers of water with different temperatures that appear...

Page 31: ...n be determined from the return charted on the display A Hard Bottom such as compacted sediment or flat rock appearsasathinnerlineacrossthedisplay ASoftBottomsuchasmudorsandappears as a thicker line a...

Page 32: ...con at the top of the displayarethemostrecentsonardata Theinformationisscrolleddownthescreenas new data drawn at the top of the screen becomes available The side beams can be operated at one of two fr...

Page 33: ...of the boat and can keep a triplog of nautical or statute miles traveled 7 Timer Elapsed time with Speed accessory or GPS Receiver The water column shows the relative depth of the water under the boa...

Page 34: ...he best boat speed to use will depend on the side range selected Slower speeds are good for longer ranges while faster speeds can be used at shorter ranges Boat navigation It is important to understan...

Page 35: ...bmerged Bridge 1 1 Submerged Bridge Creek Channel and New Bridge Piling New bridge pilings 1 Creek channel 2 1 Submerged Ravine with Timber Possible drop off 1 Submerged timber 2 1 Submerged tree 3 Su...

Page 36: ...ogs Dumped logs 1 1 Submerged barge 2 2 Submerged Standing and Fallen Timber Plus Bait Fish Bait fish 1 1 Submerged Swimming Pool Swimming pool 1 1 Standing and fallen timber 2 2 98x_Manual_531376 1_A...

Page 37: ...ettings PressEXITtoexittheLightand Backgroundmenu PressandholdthePOWER LIGHTkeyfor3secondstoturntheunitoff Amessagewill appear telling you how many seconds there are until shutdown occurs Your 900 Ser...

Page 38: ...rows on the 4 WAY Cursor Control key Menu Selection Use the DOWN or UP arrow keys to select a menu choice from the menu list then use the LEFT or RIGHT arrow keys to change a menu setting NOTE Menucho...

Page 39: ...e the scale of the view to appear closer or farther away VIEWS The views available on your 900 Series are Chart SideComboViewisthedefaultviewfor the 987 SI Combo model when it is first powered up whil...

Page 40: ...thebottom DepthRangeisautomaticallyselectedtokeepthebottomvisibleon the display although you can adjust it manually as well see Sonar X Press Menu NOTE IftheDepthnumberisflashing itmeansthattheunitish...

Page 41: ...corner and can be changed to suit conditions see Sonar X Press Menu Zoom Level Upper and Lower Zoom Depth Range numbers indicate the depth of the water which is being viewed Freeze Frame Pressing any...

Page 42: ...Side Imaging view Inthisview youcanchangewhichsideyoulookat thesensitivityofthesonartoallow you to see more or less detail the range of the side beams the scrolling speed of the chart and the color sc...

Page 43: ...Imaging X Press Menu Split Position for more information Inthisview youcanchangewhichsideyoulookat thesensitivityofthesonartoallow you to see more or less the range of the side beams the scrolling spe...

Page 44: ...views in a combination split screen You can perform any of the functions for either of these views but only when the view you want to control is selected as the active side see Sonar X Press Menu Acti...

Page 45: ...Menu Active Side or Navigation X Press Menu Active Side for more information A green arrow points to the side that is active You can also adjust the size of the left side of a split screen see Sonar...

Page 46: ...ions the view pans automatically so that the boat is always centered on the display Whentheboatisstationary itisdrawnasacircle Whentheboatisinmotion it takes on a boat shape pointed in the direction o...

Page 47: ...hetimesofthe highandlowtidesfortoday sdate Atidegraphisalsodisplayedshowingtheriseand fallofthetidesforthe24hourtimeperiodencompassingthedate Youcanchangethe datetolookattideinformationbeforeorafterth...

Page 48: ...models only Saveyourcurrentpositionasawaypoint Onanyview presstheMARKkeytosavethe current position of the boat as a waypoint Save the cursor position as a waypoint On the Chart or Combo view use the...

Page 49: ...or keys to select a sort order Name shows the waypoints alphabetically Time shows the most recently created waypoint first Distance shows the closest waypoint first Delete a waypoint From the Waypoint...

Page 50: ...ct Grid and press the RIGHT Cursor key to display a list of waypoints Selectthewaypointtowhichyouwanttoaddthegrid Thetrollinggridwill appearonallofthenavigationviews andcanbeusedasaguidewhentrollingar...

Page 51: ...st waypoint in the route SAVE OR CLEAR A CURRENT TRACK 987c SI Combo models only Save the current track From the Navigation X Press Menu select Save Current Track and press the RIGHT Cursor key The tr...

Page 52: ...and Accessories If you have a 981c SI model main tab headings are Alarms Sonar Setup Views and Accessories Press the MENU key twice for the Main Menu then use the 4 WAY Cursor LEFT or RIGHT key to se...

Page 53: ...Start Up Options menu Use the UP or DOWN 4 WAY Cursor keys to position the cursor then the RIGHT Cursor key to select one of the following choices If you wait too long the system will default to which...

Page 54: ...UpOptionsmenuasopposedtolettingthe900Series enterSimulatorautomatically as it will if a transducer is not connected and you do nothing during power up Manually selecting Simulator from the Start Up O...

Page 55: ...your current position A light gray bar indicates that the satellite is being monitored but is not yet being used This view also reports the current position local time and date and other numeric infor...

Page 56: ...e is only available when a Combo View is active To select the Active Side 1 Highlight Active Side on the Sonar X Press Menu 2 Use the RIGHT 4 WAY Cursor Control key to change which side is active Left...

Page 57: ...g Digits Views The Upper Range menu choice is available when User Mode is set to Advanced see Setup Menu Tab User Mode and can only be accessed fromtheSonar SplitSonarandBigDigitsViews UpperRangeisoft...

Page 58: ...ormation on the display longer but the bottom and fish details become compressed and may be difficult to interpret Regardless of the Chart Speed setting the RTS Window will update at the maximum rate...

Page 59: ...tom Range to be greater than the depth In this case you may see surface clutter in a wavy band that mirrors changes in the depth To adjust the Bottom Range 1 In the Sonar Zoom View highlight Bottom Lo...

Page 60: ...hlight Active Side on the Side Imaging X Press Menu 2 Use the RIGHT 4 WAY Cursor Control key to change which side is active Left Right Default Left or Sonar SPLIT POSITION Split Position allows you to...

Page 61: ...h 20 Default Auto SI RANGE SI Range sets the deepest range that will displayed in the Side Imaging views The range must be set manually The SI Range menu choice can only be accessed from the Side Imag...

Page 62: ...y The Navigation X Press Menu provides access to the settings most frequently used Press the MENU key once while in the Bird s Eye View the Chart or the Chart Sonar Combo or Chart Bird s Eye Combo Vie...

Page 63: ...when a Combo View is active To Adjust Split Screen Position 1 Highlight Split Position on the Navigation X Press Menu 2 Use the RIGHT 4 WAY Cursor Control key to change the size of the left side of a...

Page 64: ...e Confirm dialog box will appear To skip the next waypoint press the RIGHT Cursor key once more To cancel skipping the next waypoint press the LEFT Cursor key CANCEL NAVIGATION Only when navigating Ca...

Page 65: ...ove Grid on the Navigation X Press Menu 2 Use the RIGHT 4 WAY Cursor Control key to remove the grid SONAR MENU TAB Press the MENU key twice to access the Main Menu System and then press the RIGHT Curs...

Page 66: ...Control keys to select either the 200 kHz beam the 50 kHz beam or the 200 50 kHz beam 200 50 kHz 200 kHz 50 kHz Default 50 kHz SIDE VIEW FREQUENCY Side View Frequency sets the operating frequency for...

Page 67: ...eful for identifying smaller fish species or baitfish Selecting a lower setting displays fewer fish from weak sonar returns This is helpful when seeking larger species of fish Fish Sensitivity is used...

Page 68: ...ottom on the display See Bottom Presentation for more information To adjust the Bottom View 1 Highlight Bottom View on the Sonar Main Menu 2 Use the LEFT or RIGHT 4 WAY Cursor Control keys to change t...

Page 69: ...SURFACE CLUTTER Advanced Surface Clutter adjusts the filter that removes surface clutter noise caused by algae and aeration The lower the setting the less surface clutter will be displayed The Surface...

Page 70: ...PE Advanced Water Type configures your unit for operation in fresh or salt water The Water Type menu choice is available when User Mode is set to Advanced see Setup Menu Tab User Mode NOTE In salt wat...

Page 71: ...r View highlight Temperature Graph on the Sonar main menu 2 Use the LEFT or RIGHT 4 WAY Cursor Control keys to change the display of the water temperature graph Off On Default Off NAVIGATION MENU TAB...

Page 72: ...to represent the waypoint in the Chart and Combo Views Delete allows you to delete a waypoint from the list of saved waypoints Go To allows you to select a waypoint and start navigation toward that wa...

Page 73: ...points for information on how to set a Grid To change the Trolling Grid Rotation setting 1 Highlight Trolling Grid Rotation on the Navigation main menu 2 Use the LEFT or RIGHT 4 WAY Cursor Control key...

Page 74: ...map To change the Map Datum setting 1 Make sure you are in Advanced User Mode then highlight Map Datum on the Navigation main menu 2 Use the LEFT or RIGHT 4 WAY Cursor Control keys to change the Map...

Page 75: ...urrentsinaddition to the Basic and Navigation information All shows roads buildings railways and other notations in addition to the Basic Navigation and Underwater information To change the Chart Deta...

Page 76: ...he Shaded Depth setting 1 Highlight Shaded Depth on the Navigation main menu 2 Use the LEFT or RIGHT 4 WAY Cursor Control keys to change the Shaded Depth setting Off 1 to 60 Feet or 1 to 20 Meters Int...

Page 77: ...ur mind or to confirm your choice Ifthecursorwasnotactivebeforeyoubeganthisprocedure youwillsee an error message Exit the menu set the cursor then try again CLEAR MAP OFFSET Advanced Clear Map Offset...

Page 78: ...tor battery operated you would want to set the Low Battery Alarm to sound before the battery voltage drops too low for it to be used to start your main gasoline powered engine To change the Low Batter...

Page 79: ...t be to the destination waypoint before the Arrival Alarm will sound To change the Arrival Alarm setting 1 Highlight Arrival Alarm on the Alarms main menu 2 Use the LEFT or RIGHT 4 WAY Cursor Control...

Page 80: ...RIGHT 4 WAY Cursor Control keys to change the Alarm Tone setting High Medium Low Default Medium SETUP MENU TAB From any view press the MENU key twice to access the tabbed Main Menu System then press t...

Page 81: ...DISTANCE With Speed input only Units Distance selects the units of measure for all distance related readouts To change the Units Distance setting 1 Highlight Units Distance on the Setup menu 2 Use th...

Page 82: ...input only TriplogResetresetstheTriplogtozero TheTriplogprovidesthefollowinginformation timer for elapsed time distance traveled since last reset and average speed To Reset Triplog 1 Highlight Reset T...

Page 83: ...Sonar only views as long as you are not navigating all 5 readouts are customizable NOTE All 5 readouts on the Side Imaging and Side Sonar Combo views are also customizable Other Views Not Navigating O...

Page 84: ...surement from the transducer to keel to read the depth from the keel This menu choice is available only when in Advanced User Mode see Setup Menu Tab User Mode To change the Depth Offset setting 1 Mak...

Page 85: ...heLocalTimeZone Default EST UTC 5 Eastern Standard Time DAYLIGHT SAVING TIME Advanced 987c SI Combo models only Daylight Saving Time adjusts the time display to account for local Daylight Saving Time...

Page 86: ...te is selected as a Digital Readout on the Sonar View see Select Readouts To change the Date Format 1 Make sure you are in Advanced User Mode then highlight Date Format on the Setup menu 2 Use the LEF...

Page 87: ...et to Hidden and will be displayed in the view rotation if it is set to Visible The following views are available Bird s Eye View 987c SI Combo only Chart Bird s Eye Combo View 987c SI Combo only Char...

Page 88: ...properly connected to the 900 Series control head the power cable is wired correctly with red to positive battery terminal and black to negative terminal or ground the fuse is operational the battery...

Page 89: ...andwaterflowingaroundthetransducer cavitation may be interfering with the interpretation of sonar data See your Installation Guide for suggestions on adjusting the transducer position Electricalnoisef...

Page 90: ...e boat s engine is the source of the noise increase the RPMs while the boat is in neutral and stationary to see if the noise increases proportionately if noise appears when you rev the engine the prob...

Page 91: ...n an implied warranty or the exclusion of incidental or consequential damages so the above exclusions may not apply to you You may also have other rights which vary from state to state HUMMINBIRD SERV...

Page 92: ...epair Authorization Number Include a brief written description of the problem Return product freight prepaid to Humminbird using an insured carrier with delivery confirmation 900 SERIES ACCESSORIES Ac...

Page 93: ...kHz Side Imaging 160 10 dB in 455 kHz Target Separation 2 Inches 63 5 mm Power Requirement 10 20 VDC LCD 480V x 854H Transducer Side Imaging XHS 9 SI 160 T Transducer Cable Length 20 ft 6 m NOTE Produ...

Page 94: ...88 APPENDIX A Transducer Mounting Template XHS 9 SI 160 T 98x_Manual_531376 1_A qxd 2 23 2005 11 41 AM Page 94...

Page 95: ...8 00 a m to 4 30 p m Central Standard Time 1 800 633 1468 By e mail typically we respond to your e mail within three business days custserv johnsonoutdoors com For direct shipping our address is Humm...

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