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i Thank Y ou! Thank you for choosing Humminbird®, America's #1 name in fishfinders. Humminbird® has built its reputation by designing and manufacturing top- quality , thoroughly reliable marine equipment. Y our Humminbird® is designed f or trouble-free use in even the harshest marine environmen t. In the unlikely event that your Humminbird? ...
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ii T ABLE OF C ONTENTS 900 Series™ Introduction 1 How the 900 Series™ W orks .................................................................................................. 1 Side Imaging Sonar ............................................................................................................ ........ 1 DualBeam PLUS™ Sonar ...... ...
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iii T AB LE OF C ONTE NTS Chart/Bird’ s Eye Combo View (987c SI C ombo models only) .......................................... 38 Chart View (987c SI Combo models only) .............................................................................. 39 Chart/Sonar Combo View (98 7c SI Combo models only) ............................................. ...
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iv T AB LE OF C ONTE NTS Fish ID Sensitivity ............................................................................................................ .......... 6 1 Real Time Sonar (RTS®) Window ........................................................................................ 6 1 Bot tom View ............................................ ...
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v T AB LE OF C ONTE NTS Daylight Saving Time (Advanced, 987c SI C ombo models only) ...................................... 79 Position Format (Advanced, 98 7c SI Combo models only) .................................................. 79 Time Format (Advanced, 987c SI C ombo models only , International only) ...................... 80 Date Format (Adva ...
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900 SERI ES™ INTRODUCTION Y our 900 Series™ Ultra Wide Screen Fishing System comes in several dif ferent configurations. See the following list of pr oducts, all of which ar e cover ed by this manual, to find your 900 Series™ configuration: NO TE: Only the 987c SI Combo model comes with GPS and built -in cartography . • Humminbird® 981c SI ...
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Humminbird 987C SI COMBO - page 8
2 GPS AN D CART OGRAPHY (With 987c SI Combo models only) Y our 987c SI Combo model uses GPS and sonar to determine your position, display it on a grid, and provide detailed underwater inf ormation. The Global Positioning System (GPS) is a sat ellite navigation syst em designed and maintained by the U.S . Department of Defense. GPS was originally in ...
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Use the illustration to locate the position of the MM C and SD slot cover , remove the cover , and then inser t an MMC and/ or an SD card into one or both slots - either slot can accept either an MMC or an SD card. The label on both types of cards should face down and away from y ou so that you’re looking at the back of the card. Pr ess down on t ...
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Humminbird 987C SI COMBO - page 10
4 Inside the boat there is often a c hannel or conduit used for other wiring , this can be used to rout e cables. Be sure to r oute the cable as far as practical from the antenna cable of VHF radios or tachometer cables to r educe the possibility of interference. The transducer and GPS receiver cables should not be cut, and care should be used not ...
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Humminbird 987C SI COMBO - page 11
GIMBAL MOUNTING TH E C ONTROL HEAD If you are gimbal mounting the Humminbird® 900 Series™, you can pre-assemble the unit in order to plan the best mounting location. Parts and tools specific to gimbal mounting ar e: • Gimbal mounting brack et and screws • Gimbal mounting knobs and washers • Phillips head screwdriver • 5 /16" (8mm) s ...
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6 5. Set the gimbal brack et aside and drill the four mounting screw holes using a 5 /32" (4.0 mm) drill bit. 6a. If the cables must pass through a hole directly beneath the mounting brac ket, mark and drill an additional 1" (25 mm) hole centered between the f our mounting holes. Route the cables thr ough the grommet, then press the gr om ...
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8. Insert cable connectors into the pr oper recesses on the cable collector insert. The cable connectors are k eyed to prevent reverse installation, so be careful not to force the c onnectors int o the wrong slots. If you don ’t have a cable for ever y hole in the insert, install the blank plugs to protect the con trol head from the weather . Cab ...
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8 9 . While holding cables in place in the cable collector insert, thread the cables through the slot in the bot tom of the cable c ollector cover , line up the cable collector insert and cover , then slide the cover into place on the insert. NO TE: T ab on cable collector insert goes into slot on cover . 10 . Attac h the cable collector insert to ...
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5. Inser t the contr ol head through the mounting hole from the fron t side of the dash. From the bac k side of the dash, align the two threaded rods on the rear of the housing with the two holes on the in- dash mounting bracket. Place a washer onto eac h threaded rod, then secure brack et by placing a wing nut onto each threaded r od and tighten f ...
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10 C ONN ECTING TH E C ONTROL H EAD POWER CABLE T O THE BOA T A 6' (2 m) long power cable is included to supply power to the c ontrol head. Y ou may shorten or lengthen the cable using 18 gauge multi- stranded copper wire. CAUTION: Some boats have 24 or 36 V olt elec tric systems , but the control head MUS T be connected to a 12 VDC power supp ...
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TRANSDUCER I NS T ALLA TION There are two dif feren t installation methods for your transducer: • T ransom T ransducer • T rolling Motor T ransducer . Find the section that describes the method of installation you will be using. T ransducer Position Correct transducer position Incorrect transducer position, interfering with the side beams Motor ...
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12 NO TE: Rough seas also can aff ec t the readings of the Side Imaging transducer . NO TE: The transducer must be mounted at least 15” from the pr opeller to avoid interference from the motor . NO TE: If the included transducer will not work for your application, you may ex change it, NEW and UNASSEMBLED , with mounting hardware included, for a ...
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1. First, determine the best location on the transom to install the transducer . Consider the f ollowing to find the best location: • It is very important to locate the transducer in an area whic h is relatively free of turbulent water . As a boat moves through the water , turbulence is generated by the weight of the boat, and the thrust of the p ...
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14 5. Align the metal moun ting brack et with the mounting holes. The center slot should be above the two out er slots. (This brack et and all other hardware supplied is top quality stainless steel for maximum strength and corrosion pr otection.) Inser t the three 1" (25 mm) flat head wood screws int o the drilled holes, but do not completely ...
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T o adjust the running position of the transducer: The transducer mounting brack et allows height and tilt adjustment, while the pivot bolt allows angular adjustment. These adjustments will help reduce cavitation. Initially , adjust the transducer as described in the following paragraphs. Further adjustment may be necessary to refine the installati ...
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16 2. If you will be routing the cable through a hole in the transom, drill a 5 /8" diameter (16 mm) hole above the waterline. Rout e the cable through this hole, then fill the hole with marine- grade silicone sealant and proceed t o the next step immediately . 3. Place the escutcheon plat e over the cable hole and use it as a guide to mark th ...
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TES T AN D FIN ISH THE TRANSDUCER I NS T ALLA TION When you have installed both the contr ol head, the transducer , and accessories and have routed all the cables , you must per form a final test bef ore locking the transducer in place. T esting should be performed with the boat in the water , although you can initially confirm basic operation with ...
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18 GPS RECE IVER INST ALLA TION (987c SI Combo models only) NO TE: Y ou will only need to perform this procedure if you have a GPS R eceiver . T o optimize per formance of the GPS receiver , mount it in an area that has full e xposure to the sky . The effective area of reception is 10 ° above the horizon. Diff e ren t circumstances determine the m ...
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AC CESS U NDER MOU NTING LOCA TION Follow these steps t o deck mount the GPS r eceiver when routing the cable down through the mounting location: 1. Determine the best location, then test r oute the 20' (6 m) cable from the mounting location to the c ontrol head. NO TE: Installation details may vary with unit configuration. 2. Mark the mountin ...
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Humminbird 987C SI COMBO - page 26
20 FIN ISH ROUTING TH E CABLE AND CH ECK GPS RECE IVER OPERA TION Af ter installing a GPS receiver , you should perform the following procedure t o finish routing the GPS cable to the c ontrol head and to chec k to make sure that the c ontrol head is working correctly . 1. Secure the cable along its path to the c ontrol head as needed with cable ti ...
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Humminbird 987C SI COMBO - page 27
The Speed accessory incorporates a paddlewheel-type speed sensor in a high-impact plastic housing. The module is intended for installation on the transom, and will work well on almost any boat. In addition to the parts supplied, you will need a hand drill with various bits, marine- grade silicone sealant, and a Phillips head scr ewdriver . Install ...
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22 2. Clean the paddlewheel by disengaging the axial clip from the housing wedge and rotating it forward. Once you have rotat ed the axial clip, remove it fr om the housing by sliding it away from the holes in the housing. 3. Clean the removed paddlewheel with a mild solution of biodegradable soap or hot water . Clean the wheel well of debris and/ ...
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Humminbird 987C SI COMBO - page 29
GETTING ST ARTED - USI NG Y OU R 900 SERIES™ Y our 900 Series™ Fishing System user interface is easy to use. A c ombination of keys, diff erent views , and situation- specific, customizable menus allows you to con trol what you see on the color display . Refer to the following illustration, and see K ey Functions , Views , and The Menu System f ...
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24 WHA T ’S ON TH E SONAR DISPLA Y The 900 Series™ can display a variety of useful information about the area under and adjacen t to your boat, including the following it ems: Sonar Color Bar - color spectrum indicating low to high sonar intensity returns, where red indicates high intensity and white indicat es low intensity . Depth - water dep ...
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Humminbird 987C SI COMBO - page 31
UN DERS T ANDI NG SONAR HIST ORY It is important to understand the significance of the 900 Series™ display . The display does NO T show a literal 3- dimensional representation of what is under the water . Each vertical band of data received by the control head and plot ted on the display represents something that was det ected by a sonar return a ...
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26 WhiteLine® highlights the strongest sonar r eturns in white, resulting in a distinctive outline. This has the benefit of clearly defining the bot tom on the display . UN DERS T ANDI NG SIDE I MA GI NG It is important to understand how Side Imaging technology produces the display available on the 900 Series™. The images you see on the display ...
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WHA T ’S ON TH E SIDE IMAGING DISPLA Y Side Imaging displays a number of easily recognizable f eatures that allow for accurat e interpretation of bot tom con tour and str ucture. For Side Imaging, the bottom c omposition determines the intensity of the sonar r eturn. For example, r ock and gravel provide a clearer sonar r eturn than mud and sand ...
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28 SIDE IMAGING TECH NOLOGY: HO W IT WORKS Side Imaging sonar uses two very precise sonar beams that are directed to either side of the boat and “illuminate ” the bottom c ontour , structure, and fish, and display results in a “picture-like ” image. • Side beams are extr emely narrow from fr ont to back, and provide “thin slices” of t ...
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Submerged Bridge: A Closer Perspective Submerged Bridge 1 1 Submerged Bridge, Alternative P erspective Submerged 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 Submerged ravine 4 Submerged bridge 3 2 3 2 3 ...
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30 Submerged Barge with Dumped Logs Dumped logs 1 1 Submerged barge 2 2 Submerged Standing and F allen 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.qxd 2/23/2005 11:40 AM Page 36 ...
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KEY FUNCTIONS Y our 900 Series™ user interface consists of a set of easy-to-use k eys that work with various on-screen views and menus to give you flexibility and con trol ov er your fishing experience. Regardless of model, your c ontrol head will have the following common k eys: • POWER/LIGHT k ey • EXIT key • VIEW key • 4-W A Y Cursor C ...
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Humminbird 987C SI COMBO - page 38
32 temporarily , and the screen will update if it is affected by your menu set ting change, allowing you to see the ef fects of your action immediately . Reac tivat e the X -Press™ Menu by using the UP or DOWN Cursor keys. Main Menu - Press the MENU key twice for the tabbed Main Menu S ystem. The Main Menu System is or ganized under tabbed headin ...
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If the cursor is not active, the following menu will be displayed. Use the 4-W A Y Cursor Contr ol key t o select Nearest Port, Nearest Tide Station or Nearest Curren t Station, then use the RIGHT Cursor key t o display the requested information. NO TE: The built -in UniMap™ does not contain Port, Tide or Current information. This information is ...
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34 VIEWS AN D READOUTS All views have an Information Bar on the left side of the screen, c onsisting of readouts that are stack ed ver tically , and that change fr om view to view . Y ou can customize the information displayed in individual readouts on many views , including suppressing a particular readout so that nothing is displayed; the ability ...
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SONAR Z OOM VI EW Sonar Zoom View increases the displayed r esolution to separate sonar r eturns that are very close together , such as those caused by fish suspended close to the bot tom or within structure. In Zoom View , the display is split to show a narrow slice of the full range view on the right and the zoomed view on the lef t. The full ran ...
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36 SPLIT SONAR VIEW Split Sonar View displays sonar returns from the 50 kHz wide beam on the lef t side of the screen and displays sonar returns from the 200 kHz narr ow beam on the right side of the screen. Y ou can use the Split Sonar View to make side by side c omparisons between the sonar returns from the 50 kHz wide beam and the 200 kHz narr o ...
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SIDE/SONAR COMBO VIEW Side/Sonar Combo View shows r egular sonar information and side imaging sonar information in a combination split scr een. Y ou can per form any of the functions for either of these views, but only when the view you want t o control is selected as the active side (see Sonar X -Press™ Menu: Active Side or Side Imaging X -Press ...
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38 BIRD’S EYE VI EW (987c SI Combo models only) Bird's Eye View shows a 3D perspective view of the track and the c har t land cont our from a point abo ve and behind the boat (the eye point). As the boat turns, the eye point moves t o follow the boat. Big Digits on this view pro vide digital data in a large, easy-to-see format. When you pres ...
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CHART VIEW (987c SI Combo models only) Chart View shows car tography fr om the built -in UniMap™ or an optional MMC map for the area surr ounding your current position. The curren t track ( also known as the position history or breadcrumb trail) showing where the boat has been, along with saved tracks , waypoints, and the current rout e (when nav ...
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40 CHART /SIDE COMBO VIEW (987c SI Combo models only) Chart/Side Combo View shows regular chart information and side imaging sonar information in a combination split scr een. Y ou can per form any of the functions for either of these views, but only when the view you want t o control is selected as the active side (see Navigation X -Press™ Menu: ...
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Zooming: Use the Plus (+) key to Z oom In and the Minus (-) key to Z oom Out showing the cartography at differ ent scales. The scale is indicated on the lef t side of the display . If you zoom in beyond the available c hart data, the display will go into Overzoom mode whereby the last available c hart data is amplified to reflect the scale selected ...
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42 W A YPOI NTS, ROUTES AND TRACKS (987c SI Combo models only) W aypoints are stored positions that allow you t o mark areas of int erest or navigation points. Y our 900 Series™ can store up to 3000 waypoin ts. Routes link two or more waypoin ts together to cr eate a path for navigation, and ar e used in trip planning. Y ou can link individual wa ...
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Display the W aypoints Submenu: From any view , press the MENU key twice t o display the Main Menu System, then use the RIGHT Cursor k ey to select the Navigation tab. Select Wa ypoints and press the RIGHT Cursor k ey to display the W aypoints submenu. Program a specific position as a wa ypoint: T o create a waypoint that is NO T your current posit ...
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44 ADD A W A YPOI NT T ARGET OR TROLLI NG GRID (987c SI Combo models only) Add or Remov e a W aypoint T arget: From the W aypoints submenu (accessed fr om the Navigation main menu), select T arget and press the RIGHT Cursor key t o display a list of waypoints. Select the waypoint you want to tar get. A target consisting of concentric circles center ...
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SA VE, E DIT OR DELETE A ROUTE (987c SI Combo models only) Save the current rout e: While you are navigating, the current route can be saved. From the Navigation X -Press™ Menu, select Save Current Route and press the RIGHT Cursor key . Navigation will continue. Display the Routes submenu: Fr om any view , press the MENU key twice to display the ...
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46 THE ME NU S YS TEM The menu system is divided int o easy-to-use menu modules. The main components of the menu system are: Start-Up Options Menu: Press the MENU key during the power up sequence t o view the Start -Up Options menu. See Star t -Up Options Menu . X -Press™ Menu: The X-Press™ Menu allows you t o access the set tings that are chan ...
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T otal Screen Update: when you change any menu set tings that affect the Sonar View , the view will update immediately (i.e. you don ’t have to exit the menu to apply the change to the scr een). S T ART -UP OPTIONS M ENU Press the MENU key when the Title screen is displayed t o access the Star t -Up Options menu. Use the UP or DOWN 4-W A Y Cursor ...
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48 NORMAL OPERA TION Use Normal operation for on the water operation with a transducer connected. In addition, your 900 Series™ uses advanced transducer detection methods to det ermine if a transducer is connected. If a functioning transducer is connected, Normal operation will be selected automatically at power up and your 900 Series™ can be u ...
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AC CESSORY TES T Accessory T est lists the accessories connected to the system. NO TE: The speed accessor y will be detected only if the paddlewheel has moved since your 900 Series™ was powered up. GPS DIAGNOS TIC VI EW (987c SI Combo models only) GPS Diagnostic View , which is only available when a GPS Receiver is at tached to you 900 Series, sh ...
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50 SONAR X -PRESS™ M ENU The Sonar X -Press™ Menu provides access t o the set tings most frequently used. Press the MENU key once while in any of the Sonar Views t o access the Sonar X -Press™ Menu. NO TE: Menu choices will vary depending on system set tings such as whether the unit is set for Advanced User mode. NO TE : The Zoom Level menu o ...
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SENSITIVITY Sensitivity contr ols how much detail is shown on the display . Increasing the sensitivity shows more sonar returns from small baitfish and suspended debris in the water; however , the display may become too clut tered. When operating in very clear water or greater depths, incr eased sensitivity shows weaker returns that may be of inter ...
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52 LOW ER RANGE Lower Range sets the deepest depth range that will be displayed. Automatic is the default set ting. When in automatic mode, the lower range will be adjusted by the unit to f ollow the bot tom. Selecting a specific setting locks the depth range int o Manual mode. Use both Upper and Lower Range together to view a specific depth range ...
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BOTT OM LOCK (Sonar Zoom View only) Bott om Lock changes the mode of the Z oomed view in the Sonar Zoom View . T o turn on Bot t om L ock: 1. In the Sonar Zoom View , highlight Bot tom L ock on the Sonar X -Press™ Menu. 2. Use the LEFT or RIGHT 4-W A Y Cursor Contr ol keys to change the Bot tom Loc k set ting to on. (Off , On, Default = Off ) BOT ...
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54 SIDE IMAGING X-PRESS™ MENU (Side Imaging Views only) The Side Imaging X -Press™ Menu provides access to the set tings most frequently-used. Press the MENU key once while in any of the Sonar Views to access the Side Imaging X -Press™ Menu. ACTIVE SIDE Active Side allows you to select which side of a Combo View will be active; ke y presses w ...
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SI SIDE SI Side sets which transducer beam from the SI beams will be shown on the display . T o Adjust SI Side: 1. Highlight SI Side on the Side Imaging X -Press™ Menu. 2. Use the RIGHT 4-W A Y Cursor Contr ol key to select the transducer beam (Left, Right, Both, Default = Both) SI SENSITIVITY SI Sensitivity contr ols how much detail is shown on ...
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56 SI C OLORS SI Colors allows you t o select which color palet te you would like t o use for the display . T o c hang e the SI C olors: 1. Highlight SI C olors on the Side Imaging X -Press™menu. 2. Use the LEFT or RIGHT 4-W A Y Cursor Control k eys to c hange the color palet te. (Inverse, Gray , Green, Blue, Default = Inverse) NA VIGA TION X -PR ...
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ACTIVE SIDE Active Side allows you to select which side of a Combo View will be active; ke y presses will only aff ec t the active side of the screen. When a menu is displayed, the non-active side of the screen will be grayed out; at any other time, a green arrow will point t o the ac tive side. C ombo Views usually display sonar on the left, with ...
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58 SA VE CU RRENT ROUTE (Only when navigating) Save Current Rout e allows you to save the curren t route being displayed. This menu choice will only appear when you are curren tly navigating a route. T o Sa v e C urr en t R oute: 1. Highlight Save Current Rout e on the Navigation X-Press™ Menu. 2. Use the RIGHT 4-W A Y Cursor Contr ol key t o ini ...
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REMOVE GRID (Only if a Grid is active) Remov e Grid removes the waypoint grid fr om the display . This menu choice will only appear when a grid has already been applied to a waypoin t. T o R emo v e a Grid: 1. Highlight Remove Grid on the Navigation X -Press™ Menu. 2. Use the RIGHT 4-W A Y Cursor Contr ol key t o remove the grid. SONAR MEN U T AB ...
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60 BEAM SELECT Beam Select sets which sonar returns from the transducer will be displayed on the screen. When set to 200 /50 kHz , the returns from both beams are blended. The Split Sonar View continues t o display the sonar returns from eac h beam in their respective windows. The blended information is shown in the Sonar View . The RTS® Window in ...
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When Fish ID+™ is turned off , the 900 Series™ shows only the raw sonar returns on the display . These returns will often result in "arches" f orming on the display , indicating potential targets. Due t o the transducer beam angle, the distance to a fish decreases as the fish moves int o the beam, and then increases as it moves out ag ...
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62 T o c hang e the R TS® Window set ting: 1. Highligh t RTS Window on the Sonar main menu. 2. Use the LEFT or RIGHT 4-W A Y Cursor Contr ol keys t o change the R TS® Window setting. (Wide, Narrow , O ff , Default = Narrow) BOTT OM VI EW Bott om View selec ts the method used to represent bot tom and structure on the display . Structure ID® repre ...
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50 KHZ SENSITIVITY (Advanced) 50 kHz Sensitivity changes the sensitivity of the 50 kHz beam. Increasing the 50 kHz Sensitivity will display additional weak returns and decreasing the 50 kHz Sensitivity will display fewer weak returns. The 50 kHz Sensitivity menu c hoice is only available when User Mode is set to Advanced (see Setup Menu T ab: User ...
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64 MAX DEPTH (Advanced) Max Depth adjusts the maximum depth of operation. The performance of your 900 Series™ can be tuned to the maximum depth you will be fishing in by set ting the Max Depth. When a maximum depth is set, your 900 Series™ will not at tempt to acquir e sonar data below that depth, thus increasing overall performance. When Max D ...
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Humminbird 987C SI COMBO - page 71
TEMPERA TURE GRAPH (Sonar View only , with T emperature input) T emperature Graph allows you t o display or suppress a water temperatur e graph over the main Sonar View to show temperatur e changes corr elated to r ecent sonar history . T o c hang e the display of the T emper a tur e Graph: 1. In the Sonar View , highlight T emperature Graph on the ...
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66 TRACKS Tr a c k s allows you to view the T racks submenu. T o view the T r ac k s Submenu: 1. Highligh t T rac ks on the Navigation main menu. 2. Use the RIGHT 4-W A Y Cursor Contr ol keys t o view the T rac ks submenu. The T r ac k s Submenu c on tains the following menu c hoices: Edit allows you to select a previously-saved track and edit its ...
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CHART ORIE NT A TION Chart Orientation allows you to select whether views containing c har ts should be drawn North-Up or Course-Up. T o c hang e the Char t Orien ta tion setting: 1. Highlight Chart Orientation on the Navigation main menu. 2. Use the LEFT or RIGHT 4-W A Y Cursor Contr ol keys to change the Chart Orientation set ting . (North-Up, Co ...
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68 TRACK MIN DIS T ANCE (Advanced) T rack Min Distance allows you to set a minimum distance of travel bef ore a trac kpoint is added to the trac k. NO TE: T rack Min Distance works in conjunction with T rackpoint Int erval. Both conditions must be met before a trackpoin t is added to the current trac k. T o c hang e the T r ac k Minimum Distance se ...
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CHART MEN U T AB (987c SI Combo Models only) Press the MENU key twice t o access the Main Menu System and then pr ess the RIGHT Cursor key t o select the Chart tab. NO TE: Menu choices will vary depending on system set tings such as whether the unit is set for Advanced User mode. NO TE: This menu tab only appears on 987c SI Combo models. CHART DET ...
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70 LA T /LON GRID Lat/Lon Grid allows you to display or hide a grid showing latitude and longitude lines. T o c hang e the La t/L on Grid set ting: 1. Highlight Lat/L on Grid on the Navigation main menu. 2. Use the LEFT or RIGHT 4-W A Y Cursor Contr ol keys t o change the Lat/L on Grid set ting. (Hidden, Visible, Default = Hidden) SPOT SOUNDI NGS S ...
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SET MAP OFFSET (Advanced) Set Map Offset allows you to change the map of fset used by the 900 Series™. NO TE: The Map Offset will be applied to all maps and not just the map that requires the correction. The Map Offset should be cleared if a differen t map is to be used. T o c hang e the Map O f fset set ting: 1. Activate the cursor and move it l ...
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72 DEPTH ALARM Depth Alarm sounds when the depth becomes equal to or less than the menu set ting. T o c hang e the Depth Alarm set ting: 1. Highlight Depth Alarm on the Alarms main menu. 2. Use the LEFT or RIGHT 4-W A Y Cursor Control k eys to change the Depth Alarm set ting. (OFF , 1 to 100 feet, or 0 .5 to 30 meters [International Models Only] , ...
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Humminbird 987C SI COMBO - page 79
OFF C OURSE ALARM (987c SI Combo Models only) Off Course Alarm sounds when the boat has moved t oo far off c ourse based on the menu set ting when navigating. O f f Course Alarm allows you t o set how far the boat is allowed to move of f course before the Off Course Alarm will sound. T o c hang e the O f f C ourse Alarm set ting: 1. Highlight Off C ...
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Humminbird 987C SI COMBO - page 80
74 ALARM T ONE Alarm T one selects the pitch of the alarm sound. A brief tone will be produced as you adjust the Alarm T one so that you can select the tone that you can hear best. T o c hang e the Alarm T one set ting: 1. Highlight Alarm T one on the Alarms main menu. 2. Use the LEFT or RIGHT 4-W A Y Cursor Contr ol keys t o change the Alarm T one ...
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Humminbird 987C SI COMBO - page 81
UN ITS - DEPTH Units - Depth selects the units of measure for all depth-related r eadouts. T o c hang e the Units - Depth set ting: 1. Highlight Units - Depth on the Setup menu. 2. Use the LEFT or RIGHT 4-W A Y Cursor Contr ol keys to change the Units - Depth set ting. (Meters [International Models Only] , Feet, F athoms; Default is Meters for Inte ...
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Humminbird 987C SI COMBO - page 82
76 USER MODE User Mode sets the menu system t o either Normal or Advanced. When set to Normal, only the basic menu options ar e shown. When set to Advanced (default set ting), additional menu choices are available. T o c hang e the User Mode set ting: 1. Highlight User Mode on the Setup menu. 2. Use the LEFT or RIGHT 4-W A Y Cursor Con trol k eys t ...
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Humminbird 987C SI COMBO - page 83
SELECT READOUTS (Advanced) Select Readouts allows you to customize the inf ormation displayed in individual digital readouts on the left side of many views, including suppressing a particular readout so that nothing is displayed; the ability to customize r eadouts depends on the view and whether you are navigating. This Advanced feature allows you ...
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Humminbird 987C SI COMBO - page 84
78 . T o Select Readouts: 1. Make sure you ar e in Advanced User Mode, then highlight Select Readouts on the Setup main menu. 2. Use the RIGHT 4-W A Y Cursor Control k ey to initiate this procedure. 3. The Select Readouts submenu will appear , showing a list of all Readouts. Use the UP or DOWN Cursor keys t o selec t a particular Readout position, ...
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Humminbird 987C SI COMBO - page 85
SPEE D CALIBRA TION (Advanced, Speed P addlewheel only) Speed Calibration will adjust the speed readout by the percentage en tered, and will appear in the menu if a Speed Accessory is connected and the paddlewheel has moved at least once, when the unit is in Advanced User Mode (see Setup Menu T ab: User Mode .) T o c hang e the Speed C alibr a tion ...
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Humminbird 987C SI COMBO - page 86
80 TIME FORMA T (Advanced, 987c SI Combo models, International only) Time Format changes the time format used by the unit This menu c hoice is available only when in Advanced User Mode (see Setup Menu T ab: User Mode. ) International Models Only . Time Format selects a 12 hour or 24 hour format for the time of day displayed when Time + Date is sele ...
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Humminbird 987C SI COMBO - page 87
SONAR (987c SI Combo models only) Sonar deactivates Sonar and removes the Sonar Views from the view rotation. T o turn Sonar on or off: 1. Highlight Sonar on the Setup menu. 2. Use the LEFT or RIGHT 4-W A Y Cursor Con trol keys to c hange the Sonar to On or Off (Off , On, Default = On). VIEWS ME NU T AB From any view , press the MENU key twice to a ...
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Humminbird 987C SI COMBO - page 88
82 AC CESSORI ES MEN U T AB From any view , press the MENU key twice to access the tabbed Main Menu Syst em, then press the RIGHT cursor key un til the Accessories tab is selected. If no accessories are at tached to the Accessory Bus, no menu choices will appear under the Accessories tab . If an accessory is attac hed, however , additional menu cho ...
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Humminbird 987C SI COMBO - page 89
DISPLA Y PROBLEMS There are several main conditions or sources of possible in terference that may cause problems with the quality of the inf ormation displayed on the control head. Look in the following table for some s ymptoms of display problems and possible solutions: Problem Possible Cause The control head loses power at high speeds. When the b ...
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Humminbird 987C SI COMBO - page 90
84 FIN DING TH E CAUSE OF NOISE Electrical noise usually affects the display with many blac k dots at high speeds, and high sensitivity readings. One or mor e of the following sources can cause noise or in terference: Possible Source of Noise Isolation Other electronic devices The boat’ s engine Cavitation from the boat’ s propeller T urn off a ...
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Humminbird 987C SI COMBO - page 91
1- YEAR LIMITED W ARRANTY W e warrant the original retail purchaser that products made by Humminbird® have been manufactured free from def ects in materials and workmanship. This warranty is eff ective for one year from the date of original retail purc hase. Humminbird® products found to be def ec tive and co vered by this warranty will be replac ...
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Humminbird 987C SI COMBO - page 92
86 RETURN ING Y OUR U NIT FOR SERVICE Before sending your unit in for r epair , please contact the factory , either by phone or by email, to obtain a Repair Authorization Number f or your unit. Please have your product model name and serial number available before calling the fact ory . If you contact the factory by e-mail, please include your prod ...
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Humminbird 987C SI COMBO - page 93
SPECIFICA TIONS Depth Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2500 ft (780 m) * Side imaging is available up to 100 f t (30 m) of ...
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Humminbird 987C SI COMBO - page 94
88 APPEN DIX A T ransducer Mounting T emplate: XHS-9-SI- 160-T 98x_Manual_531376-1_A.qxd 2/23/2005 11:41 AM Page 94 ...
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Humminbird 987C SI COMBO - page 95
Contact Humminbird® Con tact the Humminbird® Customer Resource C enter in any of the following ways: By T elephone (Monday - Friday 8:00 a.m. to 4:30 p.m. C entral Standard Time): 1-800- 633- 1468 By e-mail (typically we respond to your e-mail within thr ee business days): custserv@johnsonoutdoors.com For direct shipping , our address is: Humminb ...
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