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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 representing all the
echoes received by the transducer are put together
on the display to form the image that you see. Like
traditional 2D Sonar, the sonar history scrolls left
across the screen.

Interpreting the Display

Down Imaging® beams “illuminate” the bottom contour, structure, and fish.
The beams are wide (side to side) but very thin front to back.

Use the light and dark parts of the display to interpret the objects under your
boat as follows:

Dark shades

represent soft returns (mud, sand) or descending terrain.

Light shades

represent denser terrain (timber, rocks) or rising terrain. A

very hard bottom may appear as

white

on the display.

White Streaks

or

Clouds

may represent fish on the display.

Shadows

are not caused by light but by the lack of a sonar return.

Objects standing on the bottom cause a sonar shadow to appear on the
display. The longer the shadow, the taller the object. Fish may also cast
shadows. You can use the shadow to interpret where the fish or object
is located in relation to the bottom.

Summary of Contents for 688ci HD DI

Page 1: ...532174 1EN_A 688ci HD 688ci HD DI and 688ci HD XD Combo Operations Manual 688ci HD 688ci HD DI and 688ci HD XD Combo Operations Manual...

Page 2: ...in your Humminbird unit is an aid to navigation designed to facilitate the use of authorized government charts not to replace them Only official government charts and notices to mariners contain all o...

Page 3: ...ctrical and electronic equipment 600 Series Down Imaging DualBeam PLUS Fish ID HumminbirdPC Humminbird LakeMaster Real Time Sonar RTS RTS Window Structure ID SwitchFire Total Screen Update UniMap Whit...

Page 4: ...cer 7 How GPS Works 8 What s on the 600 Series Control Head 9 Key Functions 10 POWER LIGHT Key 10 VIEW Key 10 CHECK INFO key 11 MENU Key 11 4 WAY Cursor Control Key 12 VIEW PRESET Keys 13 MARK Key 13...

Page 5: ...nar View 32 Sonar Zoom View 33 Split Sonar View 34 Big Digits View 36 Down Imaging View Down Imaging models only 688ci HD DI 37 Circular Flasher View 39 Snapshot and Recording View 44 Bird s Eye View...

Page 6: ...Status 75 Self Test 76 Accessory Test 76 GPS Diagnostic View 77 X Press Menu 78 Main Menu 79 Quick Tips for the Main Menu 80 Note for all Menu Settings 80 User Mode Normal or Advanced 81 Sonar X Press...

Page 7: ...t XTE only when Navigating 96 Snapshot and Recording X Press Menu Snapshot and Recording View only 97 Start Recording optional purchase SD Memory Card Snapshot and Recording View only 98 Stop Recordin...

Page 8: ...art Declutter 104 Save Current Track 104 Clear Current Track 104 Save Current Route only when Navigating 105 Sonar Window Combo View and Chart Down Combo View only 105 Reset XTE only when Navigating 1...

Page 9: ...dvanced DualBeam PLUS Sonar only 688ci HD 120 455 kHz Sensitivity Advanced Down Imaging Views only 688ci HD DI 120 Depth Lines Advanced 121 Noise Filter Advanced 121 Max Depth Advanced 122 Water Type...

Page 10: ...ation Mode 133 Chart Menu Tab 134 Lat Lon Grid 135 Navaids on Bird s Eye View 135 Chart Select 135 Set Simulation Position Advanced 135 Set Map Offset Advanced 136 Clear Map Offset Advanced 136 Shaded...

Page 11: ...national Models only 145 Triplog Reset 145 Restore Defaults 145 Select Views Advanced 145 Format Nav Directories 146 Select Readouts Advanced Sonar View and Down Imaging View only 146 Depth Offset Adv...

Page 12: ...international distributors please visit our Web site at humminbird com or contact our Customer Resource Center at 334 687 6613 NOTE Entries in this Table of Contents which list with Temp Speed only r...

Page 13: ...a transducer is not connected and you wait too long to select a Start Up Option the system will default to whichever menu is already highlighted You can also select Simulator to learn how to use your...

Page 14: ...t then uses the reflected signal to interpret location size and composition of an object Sonar is very fast A sound wave can travel from the surface to a depth of 240 ft 70 m and back again in less th...

Page 15: ...provide a good balance between depth performance and resolution Low frequencies 83 kHz are typically used to achieve greater depth capability The power output is the amount of energy generated by the...

Page 16: ...ur coverage to an area equal to your depth In 20 feet of water the wider beam covers an area 20 feet wide DualBeam PLUS sonar returns can be blended together viewed separately or compared side by side...

Page 17: ...for the best overall image quality and depth Select 800 kHz for the sharpest image See Sonar Menu Tab Imaging Frequency for more information The transducer also uses conical beams to provide data in t...

Page 18: ...at a low frequency to provide greater depth coverage up to 2500 ft 762 m The narrow 200 kHz center beam transmits at a high frequency to provide maximum detail at shallower depths The DualBeam PLUS te...

Page 19: ...finition The 20 center beam provides the highest definition while the 60 beam provides wider coverage Depth capability is affected by such factors as bottom hardness and water conditions Whether fishi...

Page 20: ...r 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 locatio...

Page 21: ...lay Refer to the following illustration and see Key Functions for more information Screen VIEW MARK GOTO MENU EXIT MENU key 1 7 MARK key 8 CHECK INFO key EXIT key 2 9 GOTO key 10 3 4 5 6 7 8 9 10 1 VI...

Page 22: ...u settings will be saved your Fishfinder should always be turned off using the POWER LIGHT key Adjust the Backlight or the Display Background Color Press the POWER LIGHT key to access the Light and Ba...

Page 23: ...ey The MENU key is used to access the menu system See The Menu System for more information Start Up Options Menu Press the MENU key during the power up sequence to view the Start Up Options menu X Pre...

Page 24: ...4 WAY Cursor Control key and the active cursor will appear on the screen Chart View Press any arrow on the 4 WAY Cursor Control key to pan the chart and highlight decluttered waypoint icons Bird s Eye...

Page 25: ...creen snapshot will also be saved to the optional purchase SD memory card see Views Snapshot and Recording View Navigation is not affected by the Screen Snapshot feature NOTE If Screen Snapshot is ena...

Page 26: ...ess the Zoom key to decrease the scale NOTE The cursor must be active for the zoom feature to work in the Down Imaging View EXIT Key The EXIT key has multiple functions depending on the situation If a...

Page 27: ...t clicks into place 3 Close the slot cover and turn the knob just 1 4 of a turn to close Do NOT overtighten as this will not improve water resistance and may damage the cover 4 To Remove Press the SD...

Page 28: ...ption in the Chart Menu Tab see Chart Menu Tab Chart Select Chart Layers You can customize your Navigation Views by selecting which chart layers to display or hide see Chart Menu Tab Chart Detail Leve...

Page 29: ...navigation items to an installed unlocked SD Card You can also export selected items For more information see Introduction to Navigation What s on the Waypoint Management Dialog Box Also see your Hum...

Page 30: ...he Navigation tab is selected Select Waypoints Routes Tracks Press the RIGHT Cursor key 3 From a selected group directory in the Waypoint Management dialog box select Options Select Multiple and Expor...

Page 31: ...onnected to your PC 2 Register your Fishfinder Log on to humminbird com Click My Account Set up a new account 3 Download From My Account My Profile My Equipment click the file name of the latest softw...

Page 32: ...Receiver Second Sonar Return When the sonar signal bouncesbetweenthebottomandthesurfaceofthe water and back again Use the appearance of the second return to determine bottom hardness Hard bottomswills...

Page 33: ...isplay at the same depth Bait Ball Fish The Fishfinder displays fish as arches and or fish icons and can be set to alarm when a fish of a certain size is detected When a target is detected a Fish ID s...

Page 34: ...ime Sonar RTS Window A Real Time Sonar RTS Window appears on the right side of the display in the Sonar View only The RTS Window updates at the fastest rate possible for depth conditions and shows onl...

Page 35: ...bottoms sand mud vegetation and small fish The colors used to represent high medium to low intensity returns are determined by the palette you choose in the Sonar Colors menu option See Sonar Menu Ta...

Page 36: ...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 display the strongest return as specified by the palette See Sonar M...

Page 37: ...sor Freeze Frame and Active Cursor Press any arrow on the 4 WAY Cursor Control key and the screen will freeze and a cursor will be displayed Use the 4 WAY Cursor Control key to move the cursor over a...

Page 38: ...if then only the information from the GPS receiver will be displayed on the view Temperature Water surface temperature Structure Depth Water depth can be set to alarm when the water becomes too shall...

Page 39: ...am is hitting hard bottom or rising terrain The dark part of the display indicates soft bottom sand mud or descending terrain Shadows Result from a lack of reflected sonar from a particular area and c...

Page 40: ...wide side to side but very thin front to back Use the light and dark parts of the display to interpret the objects under your boat as follows Dark shades represent soft returns mud sand or descending...

Page 41: ...r muddy water See Down Imaging X Press Menu Down Sensitivity for more information Freeze Frame and Active Cursor Freeze Frame and Active Cursor Press any arrow on the 4 WAY Cursor Control key and the...

Page 42: ...he available views on your screen When you press the EXIT key the display cycles through the available views in reverse order Customize You can display or hide any view to suit your fishing preference...

Page 43: ...nformation such as speed or time which varies with the view selected the accessory attached and whether or not you are navigating The digital readouts on the Sonar View can be customized See Setup Men...

Page 44: ...ge based on the Select Readouts settings or the optional purchase accessories attached see Setup Menu Tab Select Readouts Freeze Frame Use the 4 WAY Cursor Control key to freeze the display and move t...

Page 45: ...es the Zoom Preview Box which shows where the zoomed view is in relation to the full range view The Upper and Lower Depth Range numbers indicate the high and low range of the water which is being view...

Page 46: ...f the screen and sonar returns from the 200 kHz wide beam on the right side of the screen The 688ci HD XD displays sonar returns from the 50 kHz wide beam on the left side of the screen and sonar retu...

Page 47: ...35 Views 688ci HD 200 83 kHz Split Sonar View Depth 83 kHz Sonar History Window 200 kHz Sonar History Window Upper Depth Range Lower Depth Range...

Page 48: ...ted to the Fishfinder NOTE The digital readouts in the Big Digits View cannot be customized The Triplog shows distance traveled average speed and time elapsed since the Triplog was last reset Big Digi...

Page 49: ...sonar the chart scrolling speed the display color palette and the Upper Range and Lower Range see Down Imaging X Press Menu Freeze Frame Press any arrow on the 4 WAY Cursor Control key and the Down Im...

Page 50: ...hat s on the Down Imaging Display and Down Imaging X Press Menu for more information Down Imaging View Lower Depth Range White Streaks possibly vegetation or fish Bottom Return Temperature Speed Depth...

Page 51: ...ss the MENU key twice 2 Press the RIGHT Cursor key until the Sonar Menu Tab is selected 3 Press the DOWN Cursor Key to select Ice Fishing Mode Press the RIGHT or LEFT Cursor key to select On or Off De...

Page 52: ...a traditional flasher format Flasher X Press Menu Press the MENU key once in the Circular Flasher View Use the X Press Menu to set the Sensitivity Upper Range and Lower Range Depth and temperature are...

Page 53: ...ss Menu Press the MENU key once in the Circular Flasher View Use the X Press Menu to set the Sensitivity Upper Range Lower Range and Color Palette Color Palettes The color preview bar in the center of...

Page 54: ...ctivate Press the DOWN Cursor key and the purple cursor line will appear on the display 3 Adjust the Cursor Press the UP or DOWN Cursor keys repeatedly until you reach the chosen depth reading The dep...

Page 55: ...will appear on the display 3 Adjust the Zoom Range Press the RIGHT or LEFT Cursor keys repeatedly to adjust the zoom range and select the area you want to magnify The zoomed view is shown on the right...

Page 56: ...ws Scroll and View Use the UP and DOWN Cursor keys to scroll through the saved Screen Snapshots and Recordings The active file is highlighted with arrows Press the RIGHT Cursor key to view the file Sn...

Page 57: ...saved A waypoint will also be created at the boat or active cursor location The screen snapshot shares the same file name PNG Delete a Screen Snapshot 1 From the Snapshot and Recording View press the...

Page 58: ...is a saved screen snapshot and not a live view If you press the CHECK INFO key and the snapshot file connected to the icon is not saved on the installed SD memory card the chart information box will d...

Page 59: ...at the boat location and the recording shares the same file name SON Stop Recording 1 In any view press the MENU key once to open the Snapshot and Recording X Press Menu 2 Highlight Stop Recording an...

Page 60: ...Snapshot and Recording X Press Menu 2 Highlight Stop Playback and press the RIGHT Cursor key Delete a Recording 1 From the Snapshot and Recording View press the UP or DOWN Cursor keys to scroll throug...

Page 61: ...he location you choose Press EXIT to resume Playback Press the MARK key during Playback to save a Screen Snapshot and or mark a waypoint in the view or active cursor location you choose Recording Play...

Page 62: ...eye point position so that you can look off to the sides or even behind the boat Press the RIGHT or LEFT Cursor keys to turn the eye point right or left Press the UP Cursor key to move the eye point...

Page 63: ...roduction to Navigation for more information Shift Pan Use the 4 WAY Cursor Control key to shift pan the chart to another area Zoom Press the ZOOM keys to zoom in and out Zooming is also influenced by...

Page 64: ...shown with Optional Purchase Navionics Cartography Depth Cartography Map Scale Distance to the Cursor and Bearing to the Cursor Active Cursor Latitude and Longitude Position of Cursor Bearing of Boat...

Page 65: ...key to shift pan the chart to another area You can mark waypoints start navigation review position information or magnify the view See Chart View and Introduction to Navigation for more information So...

Page 66: ...or more information about the menu options Chart Window Use the 4 WAY Cursor Control key to shift pan the chart to another area You can mark waypoints start navigation review position information or m...

Page 67: ...You can set the sensitivity of the sonar the chart scrolling speed and the display color palette see Down Imaging X Press Menu and Sonar X Press Menu Freeze Frame Press any arrow on the 4 WAY Cursor...

Page 68: ...oints up on the view Course Up During navigation the projected course is shown at the top of the view Objects ahead of the boat are drawn above the boat When the boat is not navigating the course up r...

Page 69: ...us key to Zoom Out to see the cartography 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...

Page 70: ...d services information for the nearest port to your present position will be displayed Press the EXIT key to remove the information box and the cursor bull s eye will be centered over the port positio...

Page 71: ...ges for the 24 hour time period of today s date You can change the date to look at current information before or after the date displayed by pressing the LEFT or RIGHT Cursor key respectively Press th...

Page 72: ...tes from scratch You can edit your navigation data and organize it too This section will get you started See your Humminbird Waypoint Management Guide for complete details Waypoints Routes and Tracks...

Page 73: ...uld always look out for obstacles not shown on the chart A Route Leg is the path between each waypoint in a route The color of each route leg is displayed as follows Completed Route Leg Gray Current R...

Page 74: ...your Humminbird control head Open the Waypoint Management Dialog Box 1 Press the MENU key twice to open the Main Menu 2 Press the RIGHT Cursor key until the Navigation Menu Tab is selected 3 Press the...

Page 75: ...nu press the RIGHT Cursor key To move to the higher level group or the higher level directory press the LEFT Cursor key As you scroll through the Waypoint Management dialog box press the EXIT key to s...

Page 76: ...d certain track information can be edited see Edit your Waypoints Routes Tracks and Groups Route Icon Route names are alphanumeric and begin with R To change the Route name and its waypoints see Edit...

Page 77: ...the depth at that location Create a New Waypoint To create a waypoint that is NOT your current position open the Waypoint Management dialog box Select Options New New Waypoint Use the 4 WAY Cursor Co...

Page 78: ...nd press the RIGHT Cursor key to open the Waypoint submenu Select Go To and press the RIGHT Cursor key Skip a Waypoint From the Navigation X Press Menu select Skip Next Waypoint and press the RIGHT Cu...

Page 79: ...e RIGHT Cursor key The grid can also be rotated to any heading by adjusting the Grid Rotation setting on the Navigation Main Menu Remove Target or Trolling Grid Press the MENU key once and choose Remo...

Page 80: ...and Groups for details Plan Route Select Plan Route and press the RIGHT Cursor key The New Route dialog box closes so that you can select waypoints from the Waypoint Management dialog box To add a se...

Page 81: ...Open and then choose one of the following options Select Reverse and press the RIGHT Cursor key This will quickly reverse the order of the route Press the EXIT key to select Save Press the RIGHT Curs...

Page 82: ...track a name is automatically assigned The track name consists of a date time stamp but can be re named later see Edit your Waypoints Routes Tracks and Groups Clear the Current Track From the Navigat...

Page 83: ...s will depend on the type of item you are editing NOTE The Edit Waypoint dialog box is also available when you select a waypoint from the Navigation X Press Menu NOTE See your Humminbird Waypoint Mana...

Page 84: ...ts 0 9 and some punctuation symbols Icon Category Press the UP or DOWN Cursor keys to scroll through the available categories Select All to view all available icons All Geometry Alerts Supplies Naviga...

Page 85: ...finder Modes Normal Simulator and System Status X Press Menu The X Press Menu provides a shortcut to the most frequently used settings and the options on the X Press Menu correspond with the current v...

Page 86: ...odes described on the following pages Also see Power On for additional information Normal Use Normal for on the water operation with a transducer connected If a functioning transducer is connected Nor...

Page 87: ...ter use NOTE It is important to select Simulator manually from the Start Up Options Menu as opposed to letting the Fishfinder enter Simulator automatically as it will if a transducer is not connected...

Page 88: ...mber Printed Circuit Board PCB serial number software revision total hours of operation and the input voltage Accessory Test lists the accessories connected to the system NOTE The speed accessory will...

Page 89: ...et being used This view also reports the current position local time and date and other numeric information The current GPS Fix Type is reported as No Fix 2D Fix 3D Fix or Enhanced An Enhanced fix has...

Page 90: ...GHT or LEFT Cursor keys to change the menu setting NOTE The X Press Menu will collapse temporarily and the screen will update if it is affected by your menu setting change which allows you to see the...

Page 91: ...r keys to highlight a menu tab 3 Press the DOWN or UP Cursor keys to select a specific menu option under that tab 4 Press the RIGHT or LEFT Cursor keys to change a menu setting A down arrow at the bot...

Page 92: ...ion If you press the MENU key or EXIT key to leave the Main Menu and then return to the Main Menu at a later time the menu will open to the same tab as the last time the Main Menu was displayed Note f...

Page 93: ...er Mode setting 1 Press the MENU key twice to access the Main Menu 2 Press the RIGHT Cursor key until the Setup tab is selected 3 Press the DOWN Cursor key to highlight User Mode on the Setup main men...

Page 94: ...82 688ci HD DI Sonar Tab Normal Mode 688ci HD DI Sonar Tab Advanced Mode Main Menu...

Page 95: ...in any of the Sonar Views to access the Sonar X Press Menu NOTE Menu options can be expanded or simplified by setting the Fishfinder User Mode to Advanced or Normal See Main Menu User Mode for detail...

Page 96: ...ll adjust the sensitivity of all sonar frequencies When operating in very clear water or greater depths increase the sensitivity to see weaker returns that may be of interest If the sensitivity is adj...

Page 97: ...only Default 0 Lower Range Settings Various see below Lower Range sets the deepest depth range that will be displayed by the unit Auto The Lower Range will be adjusted by the unit to follow the botto...

Page 98: ...information moves across the display and consequently the amount of detail shown A faster speed shows more information and is preferred by most anglers however the sonar information moves across the d...

Page 99: ...epth Bottom Lock Sonar Zoom View only Settings Off On Default Off Bottom Lock changes the mode of the zoomed view in the Sonar Zoom View Bottom Lock continuously graphs the bottom at a constant point...

Page 100: ...u provides a shortcut to your most frequently used settings Press the MENU key once while in any of the Down Imaging Views to access the Down Imaging X Press Menu NOTE Menu options can be expanded or...

Page 101: ...ntrols how the sonar returns are displayed on the Down Imaging Views Increase the Down Sensitivity to reveal weaker returns that may be of interest especially in very clear water or greater depths A h...

Page 102: ...ed sensitivity shows weaker returns that may be of interest Decreasing the sensitivity eliminates the clutter from the display that is sometimes present in murky or muddy water 1 to 20 where Low 1 Hig...

Page 103: ...Manual mode Adjust the Upper and Lower Range together to view a specific depth range especially when looking for fish or bottom structure NOTE A minimum distance of 10 feet will be maintained between...

Page 104: ...t Reset XTE only when Navigating Settings Press the RIGHT Cursor key to activate Reset XTE is available during navigation When it is selected the cross track error XTE will be recalculated from the bo...

Page 105: ...Flasher X Press Menu NOTE Menu options will vary depending on system settings such as whether you are currently navigating NOTE Menu options can be expanded or simplified by setting the User Mode to A...

Page 106: ...interest If the sensitivity is adjusted too high the display may become too cluttered Decrease the sensitivity to eliminate the clutter from the display that is sometimes present in murky or muddy wa...

Page 107: ...o is the default setting Manual You can adjust the Lower Range to lock the unit on a particular depth Adjust the Upper and Lower Range together to view a specific depth range especially when looking f...

Page 108: ...ation Choose from the following color palettes Palette 1 Green weak Yellow medium Red strong Palette 2 Yellow weak Green medium Red strong Palette 3 Blue weakest Green weak Light Green weak to medium...

Page 109: ...s access to the snapshot management and sonar recording functions Press the MENU key once while in the Snapshot and Recording View to access the Snapshot and Recording X Press Menu NOTE For more infor...

Page 110: ...he control head is actively recording Delete Image optional purchase SD Memory Card Snapshot and Recording View only Settings Press the RIGHT Cursor key and follow screen instructions Delete Image all...

Page 111: ...l purchase SD memory card is installed and Snapshot and Recording View is on the screen Pings Per Second optional purchase SD Memory Card Snapshot and Recording View only Settings 1 to 10 Auto Default...

Page 112: ...installed and Recording Playback is active NOTE You can also change playback speed in the Snapshot and Recording View using the LEFT and RIGHT Cursor keys although you cannot skip to the beginning or...

Page 113: ...ack of a sonar recording from any view This menu option is only available when an optional purchase SD memory card is installed and Recording Playback is active NOTE During playback the amount of time...

Page 114: ...ess the Navigation X Press Menu NOTE Menu options will vary depending on system settings such as whether you are currently navigating NOTE Menu options can be expanded or simplified by setting the Use...

Page 115: ...cursor on a waypoint Settings Edit Delete Target Grid Waypoint Name allows you to view the Waypoints submenu for the waypoint under your cursor You can move the cursor onto an existing waypoint and pr...

Page 116: ...han 10 seconds press the Zoom keys NOTE See Chart Menu Tab Chart Detail Level for more information Save Current Track Settings Press the RIGHT Cursor key and follow screen instructions Save Current Tr...

Page 117: ...during navigation When it is selected the cross track error XTE will be recalculated from the boat s current position to the next waypoint in the route For example when you ve deviated from a route t...

Page 118: ...recently created waypoint You must have pressed the MARK key at least once since you last powered up the Fishfinder for this menu option to appear NOTE See Introduction to Navigation and the Humminbi...

Page 119: ...n 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 instance of the alarm condition is detected NOTE Menu options can...

Page 120: ...n the input battery voltage is equal to or less than the menu setting The battery alarm will only sound for the battery that is connected to the Fishfinder The Low Battery Alarm should be set to warn...

Page 121: ...urse Alarm Settings Off 25 to 3000 feet 10 to 1000 meters International Models only Default 300 ft 100 m Off Course Alarm allows you to set how far the boat is allowed to move off course before the Of...

Page 122: ...ination waypoint before the Arrival Alarm will sound Drift Alarm Settings Off 25 to 3000 feet 10 to 1000 meters International Models only Default Off Drift Alarm allows you to set the size of a perime...

Page 123: ...and press the RIGHT Cursor key Save and Close To save your settings and start the Timer at a later time select Save and Close and press the RIGHT Cursor key Also see Start Timer Digital Readout To di...

Page 124: ...he Sonar tab is selected NOTE Menu options can be expanded or simplified by setting the User Mode to Advanced or Normal See Main Menu User Mode for details NOTE Menu options are determined by your Hum...

Page 125: ...ation is shown in the Sonar View Sonar Zoom View and the Big Digits View The RTS Window in the Sonar View and the Circular Flasher View will only show the returns from the 200 kHz narrow beam When set...

Page 126: ...ve windows The blended information is shown in the Sonar View Sonar Zoom View and the Big Digits View The RTS Window in the Sonar View and the Circular Flasher View will only show the returns from the...

Page 127: ...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 dept...

Page 128: ...to see only raw sonar returns on the display When Max Mode is selected you will see the maximum sonar information available within the transducer beam so more fish arches and better jig tracking are...

Page 129: ...nted as orange fish symbols and targets detected in the 455 kHz conical beam are represented as blue fish symbols In the 688ci HD XD targets detected in the 200 kHz narrow beam are represented as oran...

Page 130: ...cies of fish Fish ID Sensitivity is used in conjunction with Fish ID Fish ID must be on for Fish ID Sensitivity to affect the ability of the Fishfinder to identify sonar returns as fish Real Time Sona...

Page 131: ...ue weak Purple medium Yellow strong Palette 2 Navy Blue weak Green medium Yellow strong Palette 3 Navy Blue weak to Red strong NOTE To change the color palette for the Circular Flasher View see Flashe...

Page 132: ...sonar window 83 kHz Sensitivity Advanced DualBeam PLUS Sonar only 688ci HD Settings 10 to 10 Default 0 83 kHz Sensitivity changes the sensitivity of the 83 kHz beam Increasing the 83 kHz Sensitivity...

Page 133: ...ault Low Noise Filter adjusts the sonar Noise Filter to limit interference on the display from sources such as your boat engine turbulence or other sonar devices The Off setting removes all filtering...

Page 134: ...fault Auto 688ci HD DI Auto to 600 ft Auto to 183 m International Models only Default Auto 688ci HD XD Auto to 2500 ft Auto to 762 m International Models only Default Auto Water Type Advanced Settings...

Page 135: ...depth in the digital readout window Auto is the default setting If an accessory transducer is connected to the control head select 2D Element For example if you connect an ice transducer to your Down...

Page 136: ...returns from the Down Imaging beams only Selecting DI provides faster screen updates NOTE When DI Pings is set to DI the 2D Element setting will be removed from the Digital Depth Source menu When the...

Page 137: ...additional features including Zoom and Depth Cursor Also the fishfinder s sensitivity settings are adjusted automatically to accommodate ice fishing conditions These settings will apply to the other...

Page 138: ...y depending on system settings such as whether you are currently navigating NOTE Menu options can be expanded or simplified by setting the User Mode to Advanced or Normal See Main Menu User Mode for d...

Page 139: ...Depth you cannot choose one color to represent the track A color range will represent the different depths on the track instead from light green shallowest to black deepest You can change the depth ra...

Page 140: ...on to Navigation Edit your Waypoints Routes Tracks and Groups and the Humminbird Waypoint Management Guide for details The Waypoint Settings dialog box includes the following options Icon Category all...

Page 141: ...om light green shallowest to black deepest You can change the depth range associated with black by using the Track Color Range menu setting see Navigation Menu Tab Track Color Range Chart Orientation...

Page 142: ...y or hide waypoint flags for the ten closest waypoints to the boat or active cursor The flags show the distance from the boat or active cursor to each waypoint Waypoint Proximity Flags are also influe...

Page 143: ...avigation Add a Waypoint Target or Trolling Grid for information NOTE This feature may appear as either Trolling Grid Rotation or Grid Rotation depending on your model Trackpoint Interval Settings 1 s...

Page 144: ...ernational Units only Default 50 ft 20 m Track Color Range allows you to set the depth range that will be displayed as black the deepest depth when Color By Depth is selected as the style for the curr...

Page 145: ...inue on your present course You can choose the style of the Course Projection Line as follows Standard arrow Single Vector line COG SOG line with tick marks at set intervals from the boat The tick mar...

Page 146: ...or Normal See Main Menu User Mode for details Chart Menu Advanced User Mode shown with optional purchase LakeMaster and Navionics menu options NOTE When a map from an optional purchase SD card is inst...

Page 147: ...ave built in charts or a map card If you select Auto your unit will select a chart automatically Set Simulation Position Advanced Settings Press the RIGHT Cursor key and follow screen instructions to...

Page 148: ...uires the correction The Map Offset should be cleared if a different map is to be used NOTE The cursor must be active in order for this procedure to work If the cursor was not active before you began...

Page 149: ...avigation information All shows roads buildings railways and other notations in addition to the Basic Navigation and Underwater information Custom Advanced User Mode allows you to display or hide char...

Page 150: ...ins a different map Spot Soundings Settings Hidden Visible Default Hidden Spot Soundings allows you to display or hide spot soundings which are depth measurements shown on the chart NOTE Spot Sounding...

Page 151: ...splayed See Viewing Cartography for more information Zoom In Out Press the ZOOM keys Using the ZOOM keys will override Auto Range To resume using Auto Range press and hold the ZOOM keys See Viewing Ca...

Page 152: ...ible Contour Lines sets whether the water contour lines are visible or hidden in the Chart View Contour Lines are also affected by the Water Level Offset setting Depth Colors optional purchase LakeMas...

Page 153: ...ffset setting and the water level offset will be highlighted in dark brown Shallow Water Highlight optional purchase LakeMaster charts only Settings 0 to 30 feet 0 to 5 fathoms 0 to 10 meters Internat...

Page 154: ...e UP or DOWN Cursor keys to scroll through the list As each lake is highlighted you can view information about the lake in the white box displayed on the screen Cursor To Highlight a lake on the list...

Page 155: ...then press the RIGHT Cursor key until the Setup tab is selected NOTE Menu options will vary depending on which accessories are attached to the unit NOTE Menu options can be expanded or simplified by...

Page 156: ...elects the units of measure for all distance related readouts This menu option is available if a Temp Speed accessory is connected and the paddlewheel has moved at least once or if the GPS Receiver is...

Page 157: ...ormation timer for elapsed time distance traveled since last reset and average speed NOTE See Views to find out how to display Triplog information on the screen Restore Defaults Settings Press the RIG...

Page 158: ...es should also be saved to your PC before restoring the unit s defaults or updating the software See your Humminbird online account at humminbird com and the Waypoint Management guide Select Readouts...

Page 159: ...epth readout to indicate depth from the waterline or boat s keel Enter a positive vertical measurement from the transducer to the waterline to read the depth from the waterline Enter a negative vertic...

Page 160: ...ed at least once Local Time Zone Advanced Settings Various 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 Tim...

Page 161: ...nced International only Settings mm dd yy dd mm yy yy mm dd Default mm dd yy Date Format changes the date format used by the unit Date Format selects the format for the date display when Time Date is...

Page 162: ...ion The following NMEA sentences are output when NMEA Output is turned On DPT Depth MTW Water Temperature GLL Lat Lon Position GGA GPS Fix Data RMC Recommended Minimum Specific GNSS Data VTG Course Ov...

Page 163: ...apshot 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...

Page 164: ...trunk The high temperatures generated in hot weather can damage the electronics Use the following information to keep the control head and screen clean Screen To clean the control head screen use a mi...

Page 165: ...and plastic safe soap or solution NOTE To clean the transducer you may need to pivot the transducer up in the bracket If your boat remains out of the water for a long period of time it may take some t...

Page 166: ...sion from the battery terminals or wiring or actually replacing the battery if necessary Fishfinder Defaults to Simulator with a Transducer Attached A connected and functioning transducer will cause t...

Page 167: ...air and water flowing around the transducer cavitation may be interfering with the interpretation of sonar data See your Installation Guide for suggestions on adjusting the transducer position Electri...

Page 168: ...To determine whether the boat s engine is the source of the noise increase the RPMs while the boat is in neutral and stationary to see if the noise increases proportionately if noise appears when you...

Page 169: ...urrent Draw 550 mA LCD Matrix 640 V x 480 H Transducer XNT 9 20 T includes built in temperature probe Transducer Cable Length 20 ft 6 m IPX Rating IP67 Waterproof Submersible 1 m for 30 minutes and du...

Page 170: ...Target Separation 2 1 2 Inches 63 5 mm Power Requirement 10 to 20 VDC Current Draw 550 mA LCD Matrix 640 V x 480 H Transducer XNT 9 DI T includes built in temperature probe Transducer Cable Length 20...

Page 171: ...mA LCD Matrix 640 V x 480 H Transducer XNT 9 DB 74 T includes built in temperature probe Transducer Cable Length 20 ft 6 m IPX Rating IP67 Waterproof Submersible 1 m for 30 minutes and dust tight NOTE...

Page 172: ...tended as fixed or temporary installation in transportation vehicles such as automobiles aircraft and boats In some European Union member states these vehicles are considered outside of the scope of t...

Page 173: ...in the sonar beam Precision sonar beams such as the Humminbird 20 beam have a smaller dead zone than wider sonar beams Decibel The measurement for sound pressure level or intensity of the sonar return...

Page 174: ...ement systems Either method is acceptable but it is important when comparing power outputs to make sure that the same measurement system is being used for both outputs because P T P numbers are 8 time...

Page 175: ...Water is provided by a speed paddlewheel and is the measurement of the flow past the boat which may vary depending on current speed and direction Speed Through Water is most critical for anglers using...

Page 176: ...nergy from the transmitter into sound energy and that forms the sonar beam in turn Internally the transducer consists of one or more piezo electric disks that expand by very minute amounts to create t...

Page 177: ...rrent direction the boat is traveling measured in degrees from North i e 321 where 000 is North 090 East 180 is South 270 is West When the Course Over Ground is equal to Bearing the boat is said to be...

Page 178: ...art i e WGS84 It is important to select the correct Map Datum setting in your fishfinder when comparing GPS position to a paper chart to avoid slight position inaccuracies Almost all electronic charts...

Page 179: ...s 95 of the time With SA inactive the GPS is accurate to within 45 meters 95 of the time Currently SA is inactive and the consumer can enjoy the greater precision GPS provides however the DoD reserves...

Page 180: ...y through correction signals broadcast from Federal Aviation Administration WAAS satellites stationed over the USA These secondary signals are automatically received by the standard Humminbird GPS Rec...

Page 181: ...Telephone 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 ou...

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