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Humminbird 998c HD SI Combo - page 1
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i T hank Y ou! Tha nk yo u fo r ch oo s in g Hu mm in b ir d® , th e # 1 na me in fi sh f in d er s. Humminbird® has built its r eputation by designing and manufacturing top-quality , thoroughly reliable marine equipment. Y our Humminbird® is designed for trouble-fr ee use in even the harshest marine en vironment. In the unlikely ev ent that you ...
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Humminbird 998c HD SI Combo - page 3
ii 800 Seri es™ , 900 Seri es™ , Can non®, Cann onL ink ™, Cont our XD™, Down Imag ing ™, DualB eam PLUS ™, F ish ID+™, Humm inbird PC™, Humminbird ®, In terLink ™, L akeMa ster®, ProMap™, One - T o uch® Zoo m, Qua dr aBe am PL US™ , RTS W ind ow ™, Side Ima gin g®, Sm art Cas t®, Swit chF ire™ , Str uct ure ID®, T ...
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Humminbird 998c HD SI Combo - page 4
In tr oduc tion 1 Ho w So nar W or ks .. .. ... .. ... .. ... ..... ..... .... .. ... ..... .... ... .. ... ..... .... ... .. ... ..... .... ... ..... ..... .... ... ..... ..... .... ... 1 Dua lBeam PLU S™ Son ar (Du alBea m PLUS ™ model s only [85 8c HD, 898 c HD SI, 958 c HD, an d 998c HD SI ]) ... .... ... .. ... ..... .... ... .. ... .... . ...
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Humminbird 998c HD SI Combo - page 5
W hat’ s o n th e Do wn Ima gi ng ™ Di sp la y (8 58c HD DI , 958 c HD DI , 898c HD SI , an d 998c HD SI on ly) 26 Und erst andin g the Do wn Imag ing™ Disp la y .. ... .... ... .. ... ..... .... ... ..... ..... .... ... ..... .... ... .. ... ..... ..27 Int erpr et ing the Di spla y .. .. ... .. ... .. ... .. ... .... ... .... ... ..... ..... ...
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Sel f T est ..... ..... ..... ..... .... ... .. ... .. ... ..... .... ..... .... ... .. ... ..... .... ... .. ... ..... .... ... .. ... .... ... .. ... ..... .... ... .. ... .... 62 Acc essor y T est ..... ..... .... ... .. ... .. ... .. ... ..... .... ..... .... ... .. ... ..... .... ... .. ... ..... .... ... ..... .... ... .. ... ..... .... ... . ...
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Ski p Next Wa ypoi nt (on ly whe n Navi gatin g) ... .... ... .. ... ..... .... ... .. ... .... ... .. ... ..... .... ... .. ... ..... .... ... .77 Act ive Si de (Co mbo V ie ws onl y) ... .... ... .. ... ..... .... ... ..... ..... .... ... ..... ..... .... ... ..... ..... .... ... ..... ..... .... ..7 7 Spl it Po siti on (Co mbo V ie ws onl y) ... ...
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Sur face Clut te r .... ... .. ... .. ... .. ... ..... ..... ..... .... ..... .... ... .. ... ..... .... ... ..... ..... .... ... ..... .... ... .. ... ..... .... ... .. ..8 9 Swi tchF ire™ .. ... ..... ..... ..... ..... ..... ..... ..... ... ... .. ... ..... .... ... .. ... ..... .... ... .. ... .... ... .. ... ..... .... ... .. ... .... ... .. ...
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Ch ar t Men u T ab 10 3 Lat /Lon Grid ... ... ..... ..... ..... ..... ..... ..... ..... .... .... ... .. ... ..... .... ... ..... ..... .... ... ..... .... ... .. ... ..... .... ... .. ... ..10 3 Na va ids on Bird ’s Eye V ie w.. .. ... .. ... .. .. ... ..... ..... .... ... ..... ..... .... ... ..... ..... .... ... ..... .... ... .. ... ..... ... ...
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T able of Contents ix Sou nd Con tr ol .. ... ..... ..... ..... .... .. ... .. ... .. .. ... .. ... .... ... .. ... ..... .... ... .. ... ..... .... ... ..... .... ... .. ... ..... .... ... .. 113 V ideo Out .. ... ..... .... ... .. ... .. ... ..... ..... ..... .... ..... .... ... .. ... ..... .... ... ..... .... ... .. ... ..... .... ... .. ... .. ...
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Introduction 1 Introduction Y our Humminbird® Fishing System comes in sever al differ ent configurations. See the following list of products, all of which are covered by this manual, to find your 800/900 Series™ configuration: • Humminbird® 858c HD Combo: Wide screen Fishing System with DualBeam PLUS™ Sonar and Chartplotting. GPS Receiver i ...
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2 Introduction When all the echoes are viewed side by side, an easy to interpret "graph" of the bottom, fish and structure appears. The sound pulses are transmitted at various frequencies d epending o n the appli cation. V ery high frequencies (455 kHz) are used for greatest definition, but the operating depth is li mi t ed . H i gh fr eq ...
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Introduction 3 DualBeam PLUS™ Sonar (DualBeam PLUS™ models only [858c HD, 898c HD SI, 958c HD, & 998c HD SI]) The 858c HD/958c HD Combo and 898c HD SI/998c HD SI Combo Fishing Systems use a 2 0 0/ 8 3 k H z Dua lB ea m PLU S™ son a r system with a wide (60°) area of cover age. DualBeam PLUS™ sonar has a narrowly focused 20° center bea ...
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Introduction 4 High Definition Side Imaging ® Sonar (Side Imaging® models only [898c HD SI and 998c HD SI only]) The 898c HD SI/998c HD SI Combo Fis h i ng Sy s te m use s S i de Ima gi n g® sonar to provide a wide yet precise survey of a larg e are a of wat er, i n cl u di n g deta iled bottom topog raphy an d fis h- attracting structure orient ...
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QuadraBeam PLUS™ Sonar (wi th opti onal -pu r cha se Quad ra Be am PL US™ tr an sdu cer) QuadraBeam PLUS™ sonar provides a wi de 90 ° are a of c ov era g e. QuadraBeam PLUS™ starts with two fan-shaped 35° 455 kHz Side Structure locating sonar beams to spot fish, bait, and structure to the left and right of the boat over an area of the bot ...
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Introduction 6 GPS was originally intended for military use; how ever , civilians may also take advantage of its highly accurate position capabilities, typically within +/- 4.5 meters, depending on conditions. This means that 95% of the time, the GPS receiver will read a location within 4.5 meters of your actual position. Y our GP S R e ce iv er al ...
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7 Introduction Fishing System Configuration T he F ishi ng Sys te m has a wi de va ri ety of co nfi gur ati ons tha t will inf luen ce the in sta llat io n. T he ac ce sso ry bus , vid eo out pu t, an d RS 232 co nnec to rs allo w you to expa nd you r F is hi ng Syst em capa bi li tie s. As you expa nd the c onf igur atio n, th e men u op tio ns th ...
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8 Power On Ethernet Connector Y our unit has a built-in Ethernet connector so that you can network two Humminbird® units. When you connect the units together using the optional-purchase Humminbird® Ethernet cable, data is shared across the tw o un it s a nd ad di t io n al m e nu o p ti on s a re a dd e d to t h e Menu System. See the Ethernet Op ...
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9 The Control Head, Key Functions What’s on the Control Head Y our Fishing System user interface is easy to use. A combination of keys, different views, and situation-specific, customizable menus allows you to control what you see on the color display . Refer to the following illustration, and see K ey Func ti on s , V ie ws , and T he Menu Syst ...
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10 Key Functions T ur n Loc al Son ar On or Off: Fr om the Lig ht and Back gr ound sub me nu, use the 4- W A Y Cur sor Cont ro l ke y to sel ec t Lo cal So nar . Us e the LEFT or RIGH T Cu rsor ke y to cha nge th e sett in g. See Se tu p Me nu T ab: Lo ca l So na r for mor e in fo rm at io n. NO TE: This feature may appear as either Sonar or Local ...
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11 Key Functions VIEW PRESET Ke ys The VIEW PRESET keys are used to save your three fav orite views for quick retrieval. Instead of using the VIEW key to cycle through all the views to find the one you want, you can program the VIEW PRESET keys to display a specific view immediately . See Vi e ws for more information. EXIT Ke y The EXIT ke y has mu ...
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12 Key Functions, SD Memory Card Slots GO T O Ke y The GOT O key has multiple functions, which depend on the situation. • Active Cursor: Press the GOT O key while in any view to create a waypoint and start navigation towards that waypoint. • Without Active Cursor: Press the GOT O key to display the saved waypoints list, and then highlight a way ...
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13 SD Memory Card Slots Add Maps to Y our Fishing System Y our Fishing System includes a built-in Contour XD™ or UniMap™ with a more detailed map of North America (Domestic models) or a detailed map of Eu ro pe a nd S ou t he as t As i a, i nc lu d in g Au st ra li a an d Ne w Z ea l an d (International models). Y ou can also purchase SD memory ...
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14 SD Memory Card Slots T o export all navigation data: Use the following instructions to export all of the control head’s waypoints, routes, tracks, and groups to an installed, unlocked SD card. 1. Insert an unlocked SD card into the SD card slot. 2. O pe n the W a yp oin t Mana ge me nt D ial og Box : Pre ss the MEN U k e y tw ice . Pr ess the ...
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15 SD Memory Card Slots Update Software Set up an online account at humminbird.com so that you will receive the latest Humminbird® news and software upgrades for your Fishing System. Y ou can also download HumminbirdPC™ from your account, which allows you to manage your waypoints, r outes, and tracks on y our personal computer . Required Equipme ...
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16 What’s on the Sonar Display What’s on the Sonar Display The Fishing System can display a variety of useful information about the area under and adjacent to your boat, including the following items: So na r C ol or B ar - Col or sp ec tru m ind ic at in g l ow t o h ig h s on ar in te nsi ty returns, where red indicates high intensity and whi ...
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17 What’s on the Sonar Display Understanding the Sonar Display It i s im po r ta n t to un d er st a nd t he significance of the display . The display does NOT sh ow a li te ra l 3- di m en s io na l representation of what is under the water . Each vertical band of data received by the control head and plotted on the display represents something ...
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Fr eeze Fr ame and Active Cursor Fr eeze Frame & Active Cursor - Press any arrow on the 4-WA Y Cursor Control key , and the screen will freeze and a cursor will be displayed. Use the 4-W A Y Cursor Control key to move the cursor over a sonar return, and the depth of the sonar return will be displayed at the top of the screen in the cursor dialo ...
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19 What’s on the Sonar Display Use Bottom V iew to select the method used to represent bottom and structure on the display . See So nar Me nu to set the Bottom Vie w . Structure ID® represents weak returns in blue and strong returns in red when Sonar Colors is set to Original. If the Sonar Colors palette is changed, the Structure ID® will displ ...
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20 What’s on the Side Imaging® Display What’s on the Side Imaging® Display (Side Imaging® models only [898c HD SI and 998c HD SI]) Sid e Imag in g® dis pla ys a numb er of eas ily r eco gni zable fe atur es tha t allo w for ac cur ate int erp re tatio n of bott om con tou r and str uct ur e. Fo r Side Im agi ng ®, the bot to m com pos itio ...
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Humminbird 998c HD SI Combo - page 31
21 What’s on the Side Imaging® Display Understanding the Side Imaging® Display It is important to understand how Side Imaging® technology produces the display . T he images you see on the display are produced using sonar technology . T he special transducer projects three distinct beams – one beam facing down and two beams pointing out to th ...
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22 What’s on the Side Imaging® Display Side Imaging® Frequencies and Coverage Side Imaging® sonar uses two very precise sonar beams that are directed to either side of the boat. The beams “illuminate” the bottom contour , structure, and fish, and the results are displayed in a “picture-like” image on the screen. • Frequencies: The si ...
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23 What’s on the Side Imaging® Display For Best Performance Use the following tips and examples to help you interpret the Side Imaging® display . Boat speed: Side Imaging® is best performed at boat speeds between 2 to 6 mph. If the boat is stationary , the same information is displayed over and over . If the boat is moving very quickly , there ...
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Humminbird 998c HD SI Combo - page 34
24 What’s on the Side Imaging® Display On the W ater Interpretation Submerged Ravine with Timber Possible drop off 1 1 Submerged Bridge: A Closer Per spective Submerged Bridge 1 1 Submerged timber 2 Submerged tree 3 Submerged ravine 4 2 3 4 New bridge pilings 1 Creek channel 2 Submerged bridge 3 Submerged Bridge, Creek Channel, and New Bridge Pi ...
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25 What’s on the Side Imaging® Display Submerged Swimming Pool Swi mmi ng pool 1 1 Submerged Barge with Dumped Logs 1 Dum ped logs 1 Sub mer ged bar ge 2 2 Submerged Bridge, Alternative Perspective Submerged Bridge 1 1 Submerged Standing and Fallen T imber , and Bait Fish 1 Bait fish 1 Standing and fallen timber 2 2 ...
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Humminbird 998c HD SI Combo - page 36
26 What’s on the Down Imaging™ Display What’s on the Down Imaging™ Display (858c HD DI, 958c HD DI, 898c HD SI, and 998c HD SI only) Down Imaging™ uses unique sonar technology to provide information about the area directly below your boat. The razor -thin, high- definition profiling beams produce the detailed sonar data that you see on th ...
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27 What’s on the Down Imaging™ Display Understanding the Down Imaging™ Display The images you see on the Down Imaging™ display are produced using sonar technology . Each time the unit pings, a strip of data re pre s en t in g a l l t he ec h oe s received by the transducer are put together on the display to form the image that you see. Like ...
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28 Views V iews The sonar and navigation information from your Fishing System is displayed on the screen in a variety of easy-to- read views. Many of these views are also available as a Combo Vie w , which shows two views on the screen at the same time. • Default Vie w: See below for the default view when you first power up your control head. 858 ...
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29 Views T o change the Digital Readouts: Each view displays digital readout information (such as speed or time), which varies with the view selected, the accessory attached, and whether or not you are navigating. See Set up Menu T ab: Sel ec t Re adou ts for more information about which digital readout windows can be customized. 1. Press the MENU ...
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30 Views NO TE: If the Depth number is flashing, it means that the unit is having trouble locating the bottom. This usually happens if the water is too deep, the transducer is out of the water , the boat is moving too fast, or for any other reason that the unit can’t accurately receive continuous data. Sonar Zoom V iew Sonar Zoom View provides a ...
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31 Views Split Sonar V iew Split Sonar Vie w displays sonar returns from each down beam frequency on separate sides of the screen. Y ou can use the Split Sonar Vie w to make side by side comparisons between the sonar returns from both beams. • DualBeam PLUS™ models (858c HD, 958c HD, 898c HD SI, 998c HD SI) display sonar returns from the 83 kHz ...
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32 Views Side Imaging® V iew (898c HD SI and 998c HD SI only) Side Imaging® Vie w shows a shadowed right- and left-looking view from the boat as the boat passes over the bottom. See Unde rsta ndin g the Sid e Im ag in g® Di spla y for more information about interpreting the Side Imaging® V iew . • Side Imaging® X-Press™ Menu: Press the MEN ...
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33 Views - Navigation readouts will display at the bottom of the screen when navigation starts. - Boat Icon: When you start navigation, the boat icon at the top of the screen will indicate the direction the boat needs to turn to reach the waypoint. The boat icon color will also change to or an ge . Se e Navi gation Menu T ab: SI Navi gatio n a n d ...
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34 Views Down Imaging™ Vie w (858c HD DI, 958c HD DI, 898c HD SI, and 998c HD SI only) Down Imaging™ models (858c HD DI, 958c HD DI) use the razor -thin, high-definition profiling beams to produce the detailed sonar data that you see on the display . Side Imaging® models (898c HD SI, 998c HD SI) display the down beam portion of the data from t ...
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35 Views Snapshot and Recording Vie w (optional-purchase SD Memory card required) Sn ap sh o t a nd R ec or di ng View d i sp lay s t he s c ree n s na ps ho ts an d recordings that are saved on the optional-purchase SD card installed in the control head. Use this view to review the snapshot and recording file details, start recording, and adjust t ...
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36 Views NO TE: For snapshots and recordings, the indicator bar has several states: during recording, the amount of space remaining on the SD card is indicated on the status bar. During playback, the amount of time/memory remaining to play is indicated on the status bar. When a snapshot thumbnail is highlighted, the amount of room remaining on the ...
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37 Views Delete a Screen Snapshot: 1. Fro m the Sn ap sh o t and Recording V iew , press the UP or DO W N C ur so r key s t o scroll through the saved files and highlight a snapshot file. 2. Press the Menu k ey once, and select Delete Image from the X -Press™ Menu. 3. Press the RIGHT Cursor key . NO TE: Navigation is not affected by the Screen Sn ...
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38 Views Recording and Playback The Recording feature records active sonar information. When the recording is played back, the views that were active during the recording are available in Playback. The Recording and Playback feature is available when an optional-purchase SD card is installed and Screen Snapshot is On (see Ac ce ss or ie s Me nu T a ...
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39 Views Change Playback Settings: 1. Press the MENU key once to op en t h e Sn ap s ho t an d Recording X -Press™ Menu. 2. Use the X -Press™ Menu to adjust the Sonar Recording’s Se ns i ti v it y , U pp e r R an g e, Lo wer Ran g e, an d t h e Pl ay ba c k Sp ee d . Se e Snapsh ot an d Reco rding X -Pr ess™ Men u for details. Stop Playback ...
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40 Views NO TE: Sonar chart speed is increased during Fast Forw ard and rever sed during Rewind. This may reduce the quality of the sonar image, since at higher speeds, not every sonar return can be processed and displayed. Side Beam V iew (with optional-purchase QuadraBeam PLUS™ transducer) Side Beam View displays sonar data from the left and ri ...
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41 Views Default layout: The top portion of the display presents a historical log of sonar returns from the 200 kHz down-looking sonar beam. New information in the down beam panel scrolls from right to left. The bottom portion of the display presents a historical log of sonar returns from the 455 kHz right- and left-looking sonar beams. New informa ...
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42 Views Sl a nt e d la you t : Thi s la yo ut is p re s en te d a s t hr ee s l an t ed p a ne l s representing the two 455 kHz side sonar beams and the 200 kHz down- looking sonar beam. New information appears on the right and scrolls to the left. Bird’s Eye V iew Bird’s Eye Vie w shows a 3D perspective view of the track and the chart’s lan ...
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43 Views Chart V iew Chart V iew shows cartography from the built -in Contour XD™, built -in UniMap™, or an optional SD map for the area surrounding your current position. The cartography is applied to any standard Chart Vie w or Combo V iew that displays a chart. The current track (also known as the position history or breadcrumb trail) showin ...
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44 Combo Vie ws Combo V iews Combo Vie ws display two views (or more) on the screen at the same time. Y ou can perform functions for either side of the view , access the X-Press™ Menu, and change the left view display size. The available combo views are shown on the following pages. Combo V iews: Functions The Combo V iews allow you to view and c ...
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45 Combo Vie ws Chart/Bird’s Eye Combo V iew Chart/Bird’s Eye Combo Vie w shows the Chart and Bird’s Eye views in a combination split screen, where the Bird’s Eye V iew is displayed on the left and the Chart V iew is displayed on the right. For more information about each side of this combo view , see Ch ar t V iew and Bir d’ s Ey e Vi e ...
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46 Combo Vie ws Chart/Sonar Combo View Chart/Sonar Combo View shows both the Chart and Sonar views in a combination split screen, where the Sonar V iew is displayed on the left and the Chart V iew is displayed on the right. For more information about each side of this combo view , see C ha rt Vi ew and Sona r Vi ew . Chart/Side Imaging ® Combo Vie ...
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47 Combo Vie ws Down Imaging™/Side Imaging® Combo V iew (898c HD SI and 998c HD SI only) Down/Side Imaging ® Combo V iew shows Down Imaging™ and Side Imaging® sonar information in a combination split screen, where the Down Imaging ™ Vie w is displayed on the left and the Side Imaging® Vie w is displayed on the right. For more information ...
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Humminbird 998c HD SI Combo - page 58
48 Combo Vie ws Down Imaging™/Sonar Combo View (858c HD DI, 958c HD DI, 898c HD SI, and 998c HD SI only) Down Imaging™/Sonar Combo Vie w shows traditional Sonar information on the left and Down Imaging™ sonar information on the right. For more information about each side of this combo view , see D ow n Ima gi ng ™ V iew and Son ar Vi e w . ...
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49 Viewing Cartography V iew Orientation Both Chart and Chart Combo Views allow you to choose the orientation of the view (see Na vi gat ion Me nu T ab: Ch ar t Ori enta tion ). In each orientation, the view pans automatically so that the boat is always centered on the display . T o see more of the view when the boat is traveling at the speed you s ...
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50 Viewing Cartography Zooming: Press the Plus (+) key to Zoom In and the Minus (-) key to Zoom Out to see the cartograph y at different magnification levels. The zoom level is indicated on the left side of the display . If you zoom in beyond the available chart data, the display will go into Overzoom mode whereby the last available chart data is a ...
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51 Introduction to Navigation Nearest Current Station: Current information for the nearest current station to your present position will be displayed. T his includes the position of the station and the current changes for today . T wo graphs are also presented that show the time, direction, and flow speed of the current changes for the 24 hour time ...
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52 Introduction to Navigation A ro ut e rep res en ts yo ur inte nded n av ig at ion and sh ow s the shor te st pa th fr om ea ch wa yp oi nt to th e nex t. As you tr av el a rou te, sta yin g on the rou te lin e is th e mo st eff ic ie nt wa y to get to yo ur des tina ti on, al th ou gh yo u shou ld al w ay s loo k ou t fo r obs tacl es no t sho w ...
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53 Introduction to Navigation What’s on the W aypoint Management Dialog Box Use the W aypoint Management dialog box to manage your waypoints, routes, and tracks. Use the 4-W A Y Cursor Control key to select a waypoint, route, track, group, or menu option. T o scroll through the list , press the UP or DOWN Cursor keys. T o open a submenu , press t ...
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54 Introduction to Navigation Directory: Shows the directory structure and the currently selected group. The illustration shows group GP070 as the selected group. Arrows: When arrows are displayed on a menu option, additional information or submenus are available. If the arrow points to the right, press the RIGHT Cursor key . If the arrow points to ...
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55 Introduction to Navigation Navigate to a W aypoint or P osition Navigate to the Cursor Position: From the Chart or Chart Combo V iews, use the 4-W A Y Cursor Control key to move the cursor to a position or waypoint on the display . Press the GO TO key . Navigate to a Selected W aypoint: Press the GO TO key . Press the DOWN Cursor key to highligh ...
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56 Introduction to Navigation NO TE: Only one waypoint can have either a target or a grid applied to it at one time. If you apply a target or a grid to a new wa ypoint, the original waypoint will lose its target or grid. NO TE: The spacing of the rings on the waypoint target and the spacing of the grid lines on the trolling grid are the same as the ...
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57 Introduction to Navigation Edit the W aypoint Order in a Route: Open the Wa ypoint Management dialog box. Select a Route, and press the RIGHT Cursor key to open the Route submenu. Select Open, and then choose one of the following options: • Select Reverse, and press the RIGHT Cursor key . This will quickly rev erse the order of the route. Pres ...
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58 Introduction to Navigation Delete a Sav ed T rack: Open the Waypoint Management dialog box. Select a saved track, and press the RIGHT Cursor key . Select Delete from the submenu, and press the RIGHT Cursor key . T o remove the track from the group, choose Selected. T o remove the track from all groups, choose All Instances. Stop T racking: Press ...
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59 Introduction to Navigation Edit a Wa ypoint, Route, T rack, or Group 1. O pen th e W ay poin t Mana geme nt dia lo g box. 2. Open the Submenu: Use the 4-W A Y Cur sor Co ntr ol key to sel ec t a wa ypo int , rou te, tr ack , or gro up . Pr ess the RI GHT Cu rso r k ey to op en th e subm en u. 3. Select Edit, and press the RIGHT Cursor key . 4. S ...
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60 Introduction to Navigation - MOB Man Overboar d (MOB) Navigation As soon as you know that you have a man overboar d (MOB) , you should activate MOB navigation to maximize the chances for a successful rescue. MOB navigation allows you to create an MOB waypoint to locate the point at which your man went ov erboard and the relation of the boat to t ...
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61 The Menu System, Start-Up Options Menu T he Menu System The Menu System is divided into easy-to-use menu modules as follows. The main components of the menu system are as follows: • Start-Up Options Menu: Press the MENU key during the power on sequence to view the Start-Up Options Menu. From the Start-Up Options Menu, you can choose the follow ...
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62 Start-Up Options Menu Simulator Use Simulator to learn how to use your Fishfinder before taking your boat on the water . The Simulator is a very pow erful tool that provides a randomly- updated display which simulates on the water operation. W e recommend going through this manual while using the Simulator , since all of the menus function and a ...
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63 Start-Up Options Menu Accessory T est lists the accessories connected to the system. NO TE: The speed accessory will be detected only if the paddlewheel has mov ed since your Fishing System was pow ered up. GPS Diagnostic View shows a sky chart and numerical data from the GPS receiver . The sky chart shows the location of each visible GPS satell ...
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Humminbird 998c HD SI Combo - page 74
64 X -Press™ Menu, Main Menu X-Pr ess™ Menu The X-Press™ Menu provides a shortcut to you r m os t fr eq ue ntl y- us ed s et ti ng s. The options pr ovided on the X -Press™ Menu co rr es p on d w it h t he c ur re n t vi ew. Fo r example, if you are in a Sonar V iew and pr es s t he ME N U ke y o nc e, t he S o na r X -Press™ Menu will di ...
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Humminbird 998c HD SI Combo - page 75
65 Menu Quick Tips Quick Tips for the Main Menu • From any menu option on a menu tab , press the EXIT key to jump directly to the top of the tab. • From the bottom of a menu tab, press the DOWN Cursor key to jump directly to the top of the tab. • From the top of a menu tab , press the LEFT or RIGHT Cursor keys to scroll to the next tab. Y ou ...
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Humminbird 998c HD SI Combo - page 76
66 Menu Quick Tips User Mode (Normal or Advanced) Menu options can be simplified or expanded by setting your Fishing System User Mode to Normal or Advanced. Normal Mode is provided for users who want greater simplicity and fewer menu choices. Advanced Mode is provided for users who want the highest level of control over the Fishing System. Several ...
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Humminbird 998c HD SI Combo - page 77
67 Sonar X -Press™ Menu Sonar X-Pr ess™ Menu The So na r X- Pre ss ™ M en u prov id es a sh or t cu t to you r m o st fre q ue n tl y- us e d settings. Press the MENU key once while in any of the Sonar Vie ws to access the Sonar X -Press™ Menu. NOTE: Me nu options can b e expanded or si mp li f ie d b y s e tt in g th e U s er Mo d e t o Ad ...
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Humminbird 998c HD SI Combo - page 78
68 Sonar X -Press™ Menu • The number setting indicates the percentage taken up by the left side of the Combo V iew . • Selecting Left sets the left side of the screen to its smallest setting. Sensitivity Settings: Low = 1, High = 20; Default = 10 Sensitivity controls how much detail is shown on the display and will adjust the sensitivity of a ...
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Humminbird 998c HD SI Combo - page 79
69 Sonar X -Press™ Menu Low er Range Settings: V arious, see below. Lo w er Rang e sets th e deep es t dept h ra ng e that wil l be dis pla yed b y the unit . Auto: The Lower Range will be adjusted by the unit to follow the bottom automatically . Auto is the default setting. Manual: Y ou can adjust the Lower Range to lock the unit on a particular ...
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Humminbird 998c HD SI Combo - page 80
70 Sonar X -Press™ Menu, Side Imaging® X-Press™ Menu NO TE: Quad Layout is only available when an optional-purchase QuadraBeam PLUS™ transducer is attached and the Side Beam View is active (see Sonar Menu T ab: Connected T ransducer ). Bottom Lock (Sonar Zoom View only) Settings: Off , On; Default = Off Bottom Lock changes the mode of the zo ...
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Humminbird 998c HD SI Combo - page 81
71 Side Imaging® X-Press™ Menu Cancel Navigation (only when Navigating) Settings: Press the RIGHT Cursor key and follow screen instructions. Cancel Navigation discards the current route and exits Navigation Mode. This menu option will only appear when you are currently navigating a route. This will not delete a previously-saved route. Active Sid ...
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Humminbird 998c HD SI Combo - page 82
72 Side Imaging® X-Press™ Menu SI Enhance Settings: Press the RIGHT Cursor key . SI Enhance allows you to adjust your Side Imaging® Vie w in four categories: Sensitivity , Contrast, Sharpness, and Contour Mode. Whether you’re searching the Side Imaging® data for fish or certain bottom contour , the most effective settings will vary with the ...
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Humminbird 998c HD SI Combo - page 83
73 Side Imaging® X-Press™ Menu, Down Imaging™ X-Press™ Menu Chart Speed Settings: 1 to 10, where 1 = Slow, 10 = Fastest, Default = 5 Chart Speed determines the speed at which the side sonar information moves down the display , and consequently the amount of detail shown. A faster speed shows more information in the Side Imaging® V iews and ...
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Humminbird 998c HD SI Combo - page 84
74 Down Imaging™ X-Press™ Menu Cancel Navigation (only when Navigating) Settings: Press the RIGHT Cursor key and follow screen instructions. Cancel Navigation discards the current route and exits Navigation Mode. This menu option will only appear when you are currently navigating a route. This will not delete a previously-saved route. Active Si ...
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Humminbird 998c HD SI Combo - page 85
75 Down Imaging™ X-Press™ Menu • Sen si ti vi ty : Cont r ols ho w muc h deta il is sho wn on t he disp lay . W hen op er at in g in ver y cle ar w at er or gr ea te r dept hs, inc re ased sens it iv ity sho ws weak er ret urn s t hat may be of int er est. Decr easi ng the se nsi tivi ty eli mi nat es the clu tt er fro m the disp la y that is ...
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Humminbird 998c HD SI Combo - page 86
76 Down Imaging™ X-Press™ Menu, Navigation X-Press™ Menu NO TE: A minimum distance of 10 feet will be maintained between the Upper and Lower Range regardless of the settings entered manually . Chart Speed Settings: 1 to 10, where 1 = Slow, 10 = Fastest, Default = 5 Chart Speed determines the speed at which the sonar information moves across t ...
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Humminbird 998c HD SI Combo - page 87
77 Navigation X-Press™ Menu Cancel Navigation (only when Navigating) Settings: Press the RIGHT Cursor key and follow screen instructions. Cancel Navigation discards the current route and exits Navigation Mode. This menu option will only appear when you are currently navigating a route. This will not delete a previously-saved route. Cancel MOB Nav ...
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Humminbird 998c HD SI Combo - page 88
78 Navigation X-Press™ Menu W aypoint [Name] (Only with an active cursor on a waypoint) Settings: Edit, Delete, T arget, Grid W aypoint [Name] allows you to view the Wa ypoints submenu for the waypoint under your cursor . Y ou can move the cursor onto an existing waypoint and press the MENU key once, or use Cursor to Wa ypoint to select a waypoin ...
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Humminbird 998c HD SI Combo - page 89
79 Navigation X-Press™ Menu Sav e Current Route (only when Navigating) Settings: Press the RIGHT Cursor key and follow screen instructions. Save Current Route allows you to save the current route being displayed. This menu option will only appear when you are currently navigating a route. Reset XTE (only when Navigating) Settings: Press the RIGHT ...
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Humminbird 998c HD SI Combo - page 90
80 Snapshot and Recording X-Press™ Menu Snapshot and Recording X-Pr ess™ Menu (Snapshot and Recording Vie w only) The Snapshot and Recording X-Press™ Me nu p rov id es ac ce ss t o t he s na ps ho t management and sonar recording functions. Press the MENU key once while in the Snapshot and Recording V iew to access the Snapshot and Recording ...
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Humminbird 998c HD SI Combo - page 91
81 Snapshot and Recording X-Press™ Menu Delete Image (optional-purchase SD Memory Card, Snapshot and Recording View only) Settings: Press the RIGHT Cursor key and follow screen instructions. Delete Image allows you to delete a single screen capture image. This menu option is only available when an optional-purchase SD card is installed, Snapshot ...
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Humminbird 998c HD SI Combo - page 92
82 Snapshot and Recording X-Press™ Menu Playback Speed (optional-purchase SD Memory Card, Snapshot and Recording View only) Settings: Record, Rewind1, Rewind2, Slow Play Revers e, Pause, S low Play, N orm al Pl ay , Fa st Forwar d1, Fast Forward2, Stop Playback Speed allows you to specify the playback speed for a sonar recording from the Snapshot ...
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Humminbird 998c HD SI Combo - page 93
83 Alarms Menu Tab Alarms Menu T ab From any view , press the MENU key twice to access the Main Menu. The Alarms tab will be the default selection. NO TE: When an alarm is triggered, you can silence it by pressing any key . The alarm will be silenced, and will not be triggered again until a new in st a nc e o f th e a l ar m c on di ti o n i s dete ...
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Humminbird 998c HD SI Combo - page 94
84 Alarms Menu Tab Low Battery Alarm Settings: Off , 8.5V - 13.5V; Default = Off Low Battery Alarm sounds when the input battery voltage is equal to or less than the menu setting. T he battery alarm will only sound for the battery that is connected to the Fishing System. The Low Battery Alarm should be set to warn you when the battery voltage drops ...
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Humminbird 998c HD SI Combo - page 95
85 Alarms Menu Tab Arrival Alarm Settings: Off, 25 to 3000 feet, 10 to 1000 meters [International Models only]; Default = 150 ft, 50 m Arrival Alarm sounds when the boat has either exceeded the distance to the destination wa ypoint, or has entered the Arrival Alarm Circle, based on the menu setting when navigating. Arrival Alarm allows you to set h ...
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Humminbird 998c HD SI Combo - page 96
86 Alarms Menu Tab T imer Setup Settings: Press the RIGHT Cursor key to open the dialog box. Timer Setup allows you to open a dialog box to create settings for the Timer . Y ou can also start the countdown from this dialog box. When the Timer is started, the clock counts down from the amount of time set in the dialog box. • Time: Use the 4-WA Y C ...
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Humminbird 998c HD SI Combo - page 97
87 Sonar Menu Tab Sonar Menu T ab Press the MENU key twice to access the Main Menu and then press the RIGHT Cursor key until the Sonar tab is selected. NOTE: Menu optio ns can be expa nded or si mp li f ie d b y s e tt in g th e U s er M od e t o Advanced or Normal. See Mai n M enu : U ser Mo de for details. NO TE: Menu options are determined by yo ...
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Humminbird 998c HD SI Combo - page 98
88 Sonar Menu Tab The Down Imaging™ models (858c HD DI, 958c HD DI) allow you to choose 200 kHz or 455 kHz for conical sonar cover age in the traditional sonar views. • Wh e n s e t t o 2 0 0 kH z , o n ly th e returns from the 200 kHz (25°) beam will be displayed. • Wh e n s e t t o 4 5 5 kH z , o n ly th e re tu rn s f ro m th e 4 55 k Hz ...
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Humminbird 998c HD SI Combo - page 99
89 Sonar Menu Tab Imaging Fr equency (8 58 c HD DI and 958 c HD D I on ly) Settings: 800 kHz, 455 kHz; Default = 455 kHz Imaging Frequency allows you to select which frequency to apply to the Down Imaging™ beams (455 kHz or 800 kHz). For the best overall image quality and depth, select 455 kHz. For the sharpest image (but limited depth capability ...
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Humminbird 998c HD SI Combo - page 100
90 Sonar Menu Tab Fish ID+™ Settings: Off , On; Default = Off Fish ID+™ uses advanced signal processing to interpret sonar returns and will display a Fish Symbol when very selective requirements are met. When a fish is detected, a fish icon and its depth are displayed above the return that has been classified as being a fish. Three different fi ...
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Humminbird 998c HD SI Combo - page 101
91 Sonar Menu Tab Rea l T ime Sonar (RTS ™) W ind o w Settings: W ide, Narro w, Off; Default = Narrow RTS Window™ sets the RTS Windo w™ to Wide or Narrow , or turns it off in the Sonar V iews. The RTS Window™ always updates at the fastest rate possible and only displays returns that are within the transducer beam. See Wh at’s on th e So n ...
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Humminbird 998c HD SI Combo - page 102
92 Sonar Menu Tab Zoom Width (Sonar Zoom View only) Settings: Narro w, Medium, Wide; Default = Wide Zoom W idth adjusts the width of the zoomed view on the Sonar Zoom V iew . See V ie ws: So nar Zo om Vi e w for more information. 50 kHz Sensitivity ( Ad v an ce d , XD S o n ar on l y [8 5 8 c HD X D & 95 8c H D XD ] ) Settings: -10 to +10; Defa ...
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Humminbird 998c HD SI Combo - page 103
93 Sonar Menu Tab Depth Lines (Advanced) Settings: Off , On; Default = On Depth Lines divide the display into four equal sections which are separated by three horizontal depth lines. T he depth of each line is displayed along the depth scale. Y ou can turn Depth Lines On or Off . SI Range Lines (Advanced, Side Imaging® View only [898c HD SI and 99 ...
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Humminbird 998c HD SI Combo - page 104
94 Sonar Menu Tab SI Readouts (Advanced, Side Imaging® View only [898c HD SI and 998c HD SI]) Settings: On, Off; Default = On SI Readouts allows you to display or hide the digital readout boxes in the Side Imaging® View . When SI Readouts is set to Off, T emperature and Depth will continue to be displayed on the screen. NO TE: See Set up Me nu T ...
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Humminbird 998c HD SI Combo - page 105
95 Sonar Menu Tab W ater T ype (Advanced) Se tt i ng s: Fr es h, S al t (s h al lo w) , Sa lt ( de e p) ; Default = Fresh W ater T ype configures your unit for operation in fresh or salt water . In salt water , you can also choose the shallow or deep setting. The W ater T ype menu option is available when User Mode is set to Advanced (see Mai n Me ...
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Humminbird 998c HD SI Combo - page 106
96 Sonar Menu Tab Connected T ransducer Se tt in gs: H i- De f Si de sc an , Co mp act S id es ca n, Sidescan, DI 200/455, DI 200/83, Quad Beam, Dual Beam, Dual 50/200, Universal Sonar 2; Default = V arious, see below Connected T ransducer allows you to choose which connected transducer you want to use. When you choose a transducer , the correspond ...
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Humminbird 998c HD SI Combo - page 107
97 Sonar Menu Tab NO TE: See Ho w Sona r W orks : Do wn Imag in g™ Son ar for more information. Color Bar Settings: Off , On, Default = On Color Bar allows you to display or suppress the display of the color bar shown in the full screen Sonar V iew . T emperatur e Graph (Sonar View only, with T emperature input) Settings: Off , On, Default = On T ...
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Humminbird 998c HD SI Combo - page 108
98 Navigation Menu Tab Navigation Menu T ab Press the MENU key twice to access the Main Menu, then press the RIGHT Cursor key until the Navigation tab is selected. NO TE: Menu options will vary depending on syste m sett ings, s uch as w hethe r you are currently navigating. NOTE: Menu optio ns can be expa nded or si mp li f ie d b y s e tt in g th ...
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Humminbird 998c HD SI Combo - page 109
99 Navigation Menu Tab W aypoints, Routes, T racks (W aypoint Management Dialog Box) Settings: Press the RIGHT Cursor key to open the dialog box. W aypoints, Routes, T racks allows you to open the Waypoint Management dialog box. Use the Waypoint Management dialog box to create new waypoints and routes and organize your navigation data. Y ou can als ...
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Humminbird 998c HD SI Combo - page 110
100 Chart Orientation Se tt i ng s: N or th - Up , H e ad in g Up , Co ur se -U p; Default = North-Up Chart Orientation allows you to select whether the Chart and Combo V iews should be dra wn North-Up, Heading Up, or Course-Up. The Chart Orientation setting does not apply to the Bird’s Eye V iew (see Vi e wi ng Cart og r ap hy ). Casting Rings S ...
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Humminbird 998c HD SI Combo - page 111
101 W aypoint Decluttering (Advanced) Settings: Off , On; Default = On W aypoint Decluttering allows you to set the declutter feature On or Off. When two or more waypoints overlap, or are displayed close together on a chart view , the screen will automatically declutter—wa ypoint names will shorten and the waypoint icons will change into small bl ...
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Humminbird 998c HD SI Combo - page 112
102 Map Datum (Advanced) Settings: V arious, Default = WGS 84 Map Datum allows you to change the map coordinate system used by the Fishing System to match those of a paper map. North-Up Indicator Settings: On, Off; Default = Off North-Up allows you to display the North-Up icon on the screen to indicate the direction of T rue North. The icon also di ...
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Humminbird 998c HD SI Combo - page 113
103 Chart Menu T ab Press the MENU key twice to access the Main Menu and then press the RIGHT Cursor key until the Chart tab is selected. NOTE: Menu optio ns can be expa nded or si mp li f ie d b y s e tt in g th e U s er Mo d e t o Advanced or Normal. See Main Menu: User Mode for details. Cha rt Me nu (Ad vanc ed, show n with optio nal-p urch ase ...
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Humminbird 998c HD SI Combo - page 114
104 Set Simulation P osition (Advanced) Settings: Press the RIGHT Cursor key and follow screen instructions to activate. Set Simulation Position allows you to set the position of the boat used in the Simulator . Press any arrow on the 4-WA Y Cursor Control key to activate the cursor and move it to the coordinates where you want start the simulation ...
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Humminbird 998c HD SI Combo - page 115
105 T o customize the chart lay ers: 1. Select Chart Detail Level from the Chart Menu T ab. Press the RIGHT Cursor ke y to select Custom. Selecting Custom adds the Custom Chart Layers menu to the Chart menu. 2. Press the DOWN Cursor key to select Custom Chart Lay ers, and press the RIGHT Cursor key to access the submenu. 3. Use the 4-WA Y Cursor ke ...
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Humminbird 998c HD SI Combo - page 116
106 Auto Range (Advanced) Settings: On, Off; Default = Off Auto Range , when turned on, sets the chart scale to the lowest range so that only the boat icon and the next wa ypoint in the route are displayed. See V iew s: Vi e wi ng Cart ogr ap hy for more information. Zoom In/Out: Press the +/– ZOOM keys. Using the +/– ZOOM keys will override Au ...
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Humminbird 998c HD SI Combo - page 117
107 Depth Highlight Range (+/-) (optional-purchase LakeMaster® charts only) Settings: 0 - 60 feet, 0 - 30 fathoms, 0 - 20 meters (International Models only); Default = 5 ft, 2m Depth Highlight Range adjusts the range on each side of the highlighted depth, when a Depth Highlight is active in the chart views. W ater Lev el Offset (optional-purchase ...
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Humminbird 998c HD SI Combo - page 118
108 Setup Menu T ab From any view , press the MENU key twice to access the tabbed Main Menu, then press the RIGHT Cursor key until the Setup tab is selected. NO TE: Menu options will vary depending on which accessories are attached to the unit. NOTE: Menu optio ns can be expa nded or si mp li f ie d b y s e tt in g th e U s er Mo d e t o Advanced o ...
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Humminbird 998c HD SI Combo - page 119
109 Units - Depth Se tt i ng s: Do m es ti c Mo de l s: Fe et , Fat ho m s; In te r na ti on a l Mo de ls : Me t ers , Fe et , Fat h om s; Default = Feet/Meters Units - Depth selects the units of measure for all depth-related readouts. Units - T emp (International Models only) Settings: Celsius, Fahrenheit; Default = Celsius Units - T emp selects t ...
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Humminbird 998c HD SI Combo - page 120
110 The T riplog provides the following information: timer for elapsed time, distance traveled since last reset, and average speed. NO TE: See V ie ws to find out how to display T riplog information on the screen. Restore Defaults Settings: Press the RIGHT Cursor key and follow screen instructions to activate. Use this menu choice with caution! Res ...
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Humminbird 998c HD SI Combo - page 121
111 Chart Views: Readouts 1, 3, and 4 can be customized. Readout 2 (Heading) and Readout 5 (Speed) are fixed and cannot be customized. During navigation: Readout 1 can be customized, and Readouts 2 - 5 are fixed as follows: Readout 2 (Heading), Readout 3 (Bearing), Readout 4 (Split: Cross T rack Error (XTE) and Distance T o Go (DTG)), and Readout 5 ...
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Humminbird 998c HD SI Combo - page 122
112 Local T ime Zone (Advanced) Settings: V arious; Default = EST [UTC-5] - Eastern Standard Time Local Time Zone selects your time zone in reference to the time reported by the GPS receiver when Time+Date is selected as a Digital Readout on the Sonar V iew (see Set up Menu T ab: Sele ct Rea do ut s ). Daylight Saving Time (Advanced) Settings: Off ...
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Humminbird 998c HD SI Combo - page 123
113 NMEA 0183 Output (Advanced) Settings: Off , On; Default = Off NMEA 0183 Output turns the NMEA* output on or off . NMEA Output should be turned On if you connect the NMEA Output wires of the GPS Receiver cable to another NMEA-compatible device, such as an autopilot. *NM EA 018 3 is a Nat ion al Mar ine Elec tr oni cs Ass ociat io n stand ard for ...
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Humminbird 998c HD SI Combo - page 124
114 V iews Menu T ab From any view , press the MENU key twice to access the tabbed Main Menu, then press the RIGHT Cursor key until the Vie ws tab is selected. This menu tab allows you to set the available view s t o hi dd en o r vi si ble i n th e v iew rotation. The view will be removed from the view rotation if it is set to Hidden and will be di ...
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Humminbird 998c HD SI Combo - page 125
115 Screen Snapshot (optional-purchase SD Memory Cards only) Settings: Off , On; Default = Off Screen Snapshot activates the screen snapshot function. When Screen Snapshot is enabled, pressing the MARK key creates a saved screen snapshot on the optional-purchase SD memory card installed in your unit’s card slot. All active menus, dialog boxes, wa ...
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Humminbird 998c HD SI Combo - page 126
116 As target information is receiv ed, the information is displayed in the Chart V iews. In Bird’s Eye V iew , only the target position is displayed. • V essel Icons identify the type of target. • Alarm & Red Vessel Icon identify a target that has exceeded the CP A (Closest Point of Appr oach) setting. The alarm sound and banner will dis ...
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Humminbird 998c HD SI Combo - page 127
117 T o Change Settings in the AIS Submenu: Highlight AIS in the Accessories MENU T ab, and press the RIGHT Cursor key to access the AIS Submenu. T racking T arget sets targets and related information to be visible (On) or hidden (Off) in the Chart Views. In Bird’s Eye V iew , only target position will be display ed. (Settings: On, Off; Default = ...
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Humminbird 998c HD SI Combo - page 128
118 Maintenance Y our Humminbird® fishfinder is designed to provide years of trouble free operation with very little maintenance. Use the following procedures to ensure your Humminbird® continues to deliver top performance. Control Head Maintenance It is important to consider the following precautions when using your Humminbird® control head: ? ...
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Humminbird 998c HD SI Combo - page 129
119 T roubleshooting Before contacting the Humminbird® Customer Resource Center , please read the following section. T aking the time to review these troubleshooting guidelines may allow you to solve a performance problem yourself , and therefor e avoid sending your unit back for repair . Fishing System Doesn’t P ower Up If your Fishing System d ...
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Humminbird 998c HD SI Combo - page 130
120 Display Problems Ther e are several main conditions or sources of possible interference that may cause problems with the quality of the information displayed on the control head. Look in the follo wing table for some symptoms of display problems and possible solutions: Problem P ossible Cause T he control head loses power at high speeds. W hen ...
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Humminbird 998c HD SI Combo - page 131
121 Finding the Cause of Noise Electrical noise usually affects the display with many black dots at high speeds, and high sensitivity readings. One or more of the following sources can cause noise or interference: P ossible Source of Noise Isolation Other electronic devices T he boat’s engine Cavitation from the boat’s propeller T urn off any n ...
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Humminbird 998c HD SI Combo - page 132
122 858c HD and 958c HD Specifications Depth Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1500 ft (500 m) P ower Output . . . . . . . . . . . . . .500 W atts (RMS), 4000 W atts (P eak to Peak) Operating Frequency DualBeam PLUS™: . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200 kHz and 83 kHz Area of ...
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Humminbird 998c HD SI Combo - page 133
123 898c HD SI and 998c HD SI Specifications Depth Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1500 ft (500 m) P ower Output . . . . . . . . . . . . . .500 W atts (RMS), 4000 W atts (P eak to Peak) Operating Frequency Side Imaging®: . . . . . . . . . . . . . . . . . .200 kHz and 83 kHz, 455 kHz, 800 kHz Area of ...
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Humminbird 998c HD SI Combo - page 134
124 ENVIRONMENT AL COMPLIANCE ST A TEMENT: It is the intention of Johnson Outdoors Marine Electronics, Inc. to be a responsible corporate citizen, operating in compliance with known and applicable environmental regulations, and a good neighbor in the communities where we make or sell our products. WEEE DIRECTIVE: EU Directive 2002/96/EC “Waste of ...
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Humminbird 998c HD SI Combo - page 135
125 Cop yrig ht © 200 0 Cal dera Syst ems, Inc. All ri ght s rese rved . Red istri buti on and use in sou rce and bina ry fo rms , with or with ou t mo dif icati on, are per mitt ed pr ovi de d tha t the f oll o win g cond iti on s ar e met: • Red istri buti ons of so urce co de must re tain th e abo v e cop yr igh t not ice, th is lis t of cond ...
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Humminbird 998c HD SI Combo - page 136
Beam (Sonar Beam) The wide, cone-shaped projection of sound wa ves formed as sound travels underwater . Se e Co ne Angl e . Bo tt om Co nt ou r Th e pro fil e of the bot tom gr ap hed to the disp la y as the dep th cha nges . Bo tt om Har dne ss Th e de ns ity (or comp os iti on) of the bot to m. Va ryin g le ve ls of ha rd ne ss ca n be dete rmin ...
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Humminbird 998c HD SI Combo - page 137
P ow er Out put The am ou nt of soun d en er gy emit ted in to the w at er by the tr ansd uce r’s tra nsmi tte r . P ow er out put is mea sur ed usin g eit her RMS (R oot Mean Squ are ) or P - T -P (P eak- to- Pe ak) me asur emen t sy stem s. Eith er meth od is acce ptab le, but it is imp orta nt whe n comp ar ing po wer ou tpu ts, to mak e sur e ...
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Humminbird 998c HD SI Combo - page 138
pr ovi de a ver y go od 2 1/2 inc he s of tar ge t se par at ion in sh al lo wer than 100 f eet of dep th. T ar get sepa ra tion dec rea ses as dept h incr ease s due to the nee d for lon ge r Pul se W idth to achi ev e gre at er dept h. Se e Pu lse W id th . T herm ocli nes W ate r la ye r(s) of dist inct ly di ff ere nt te mper atu re s th at cre ...
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Humminbird 998c HD SI Combo - page 139
adv ent of WA AS ha s lar gely nega ted th e nee d fo r th e add ed expe nse of a DBR in the Uni ted Sta tes . Di st an ce T o Go Th e str aigh t -line dist an ce b etwe en Pr esen t P osi tion an d t he Des tina tion W ayp oi nt. D TG an d SOG (Spe ed Ov er Gr oun d) ar e use d to ca lc ul at e Ti me T o Go. Se e T ime to Go and Spee d Ov er Gro u ...
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Humminbird 998c HD SI Combo - page 140
Se le ct iv e Av ail ab il it y (SA ) A GP S syst em “fea tur e” that ca n be imp leme nte d by the U. S. Depa rtm ent of Def ense (Do D) to degr ade the ac cur acy of GPS po si tio ning in fo rm at ion. Wi th SA acti ve, the GPS is accur at e to wit hin 100 met er s 95 % of the time . W ith SA ina ctiv e, the GP S is acc ura te to with in 45 m ...
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Humminbird 998c HD SI Combo - page 141
NO TE: If you are reproducing or printing this template from an electronic file, start with the following print settings: Scale = None, Paper = 8.5 x 11 inches, Layout = Landscape. Confirm that the template matches the transducer bracket slots and adjust the print as needed. 131 Appendix A Side Imaging® T ransducer Mounting T emplate (XHS 9 HDSI 1 ...
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Humminbird 998c HD SI Combo - page 142
132 Contact Humminbir d® Contact the Humminbird® Customer Resource Center in any of the following ways: By T elephone (Monday - Friday 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): service@humminbird.com For direct shipping, our address is: Humminbird® Se ...
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