Humminbird 346c DI Operation Manual Download Page 32

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Split Sonar View

displays sonar returns from each down beam frequency on

separate sides of the screen. You can use the Split Sonar View to make side by
side comparisons between the sonar returns from both beams.

•

Beams:

Sonar returns from the 455 kHz narrow beam are displayed on

the left side of the screen and sonar returns from the 200 kHz wide
beam are displayed on the right side of the screen.

•

Depth

is displayed in the upper left hand corner.

•

The

Digital Readouts

in the Split Sonar View cannot be customized;

therefore, information such as water temperature and voltage are
unavailable in the Split Sonar View.

Split Sonar View

Depth

455 kHz

Sonar

History

Window

200 kHz Sonar
History Window

Upper Depth
Range

Lower Depth
Range

Views

Summary of Contents for 346c DI

Page 1: ...531955 2EN_A 346c DI Operations Manual 346c DI Operations Manual ...

Page 2: ...ou to react Always operate the boat at very slow speeds if you suspect shallow water or submerged objects WARNING Disassembly and repair of this electronic unit should only be performed by authorized service personnel Any modification of the serial number or attempt to repair the original equipment or accessories by unauthorized individuals will void the warranty WARNING This product contains chem...

Page 3: ...s Menu are trademarked by or registered trademarks of Johnson Outdoors Marine Electronics Inc Baekmuk Batang Baekmuk Dotum Baekmuk Gulim and Baekmuk Headline are registered trademarks owned by Kim Jeong Hwan 2012 Johnson Outdoors Marine Electronics Inc All rights reserved ATTENTION INTERNATIONAL CUSTOMERS Products sold in the U S are not intended for use in the international market Humminbird inte...

Page 4: ...y 9 What s on the Sonar Display 10 Understanding the Sonar Display 12 Real Time Sonar RTS Window 12 Sonar Colors and Bottom View 13 SwitchFire 15 Freeze Frame and Active Cursor 15 Instant Image Update 15 What s on the Down Imaging Display 16 Understanding the Down Imaging Display 18 Interpreting the Display 18 Down Imaging Sensitivity 19 Freeze Frame and Active Cursor 19 Views 20 Sonar View 22 Son...

Page 5: ...39 Note for all Menu Settings 39 User Mode Normal or Advanced 40 Sonar X Press Menu Sonar Views only 42 Sensitivity 43 Upper Range Advanced Sonar Split Sonar Circular Flasher and Big Digits Views only 44 Lower Range 44 Chart Speed 45 Zoom Level Sonar Zoom View only 45 Bottom Lock Sonar Zoom View only 45 Bottom Range Sonar Zoom View only when Bottom Lock is On 46 Down Imaging X Press Menu Down Imag...

Page 6: ...54 Zoom Level Circular Flasher View Ice Fishing Mode only 55 Alarms Menu Tab 56 Depth Alarm 57 Fish ID Alarm 57 Low Battery Alarm 57 Temp Alarm 58 Alarm Tone 58 Timer Setup 59 Start Timer 59 Stop Timer with the Timer running 59 Sonar Menu Tab 60 Beam Select 61 Imaging Frequency Down Imaging Views only 62 Surface Clutter 63 SwitchFire 63 Fish ID 64 Fish ID Sensitivity 65 Real Time Sonar RTS Window ...

Page 7: ... 71 DI Colors Down Imaging Views only 71 Setup Menu Tab 72 Units Depth 73 Units Temp International only 73 Units Distance with Temp Speed only 73 Units Speed with Temp Speed only 73 User Mode 73 Language International only 74 Triplog Reset with Temp Speed only 74 Restore Defaults 74 Select Views Advanced 74 Select Readouts Advanced Sonar View and Down Imaging View only 75 Depth Offset Advanced 76 ...

Page 8: ...national only are only available on products sold outside of the U S by our authorized international distributors To obtain a list of authorized 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 require the purchase of separate accessories You can visi...

Page 9: ...ator if there isn t a transducer attached to the control head NOTE See Start Up Options Menu for more information If a functioning transducer is connected Normal operation will be selected automatically at power up and your Fishfinder can be used on the water If 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 high...

Page 10: ... 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 than 1 4 of a second It is unlikely that your boat can outrun this sonar signal SONAR is an acronym for SOund and NAvigation Ranging Sonar uses precision sound pulses or pings which are emitted into the water in a teardrop shaped beam Th...

Page 11: ... 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 sonar transmitter It is commonly measured using two methods Root Mean Square RMS measures power output over the entire transmit cycle Peak to Peak measures power output at the highest points The bene...

Page 12: ... 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 traditional 2D format see What s on the Sonar Display Select 455 kHz for a narrowly focused 16 center beam or select 200 kHz for a wider 25 beam see Sonar Menu Tab Beam Select Depth capability is affected by such factors ...

Page 13: ...lectable dual frequency gives you the option of two beams and both beams will cover the bottom and provide high definition The 20 degree center beam provides the highest definition while the 60 degree beam provides wider coverage Depth capability is affected by such factors as bottom hardness and water conditions Whether fishing in shallow to very deep water selectable dual frequency is ideal for ...

Page 14: ...se A combination of keys and special features allows you to control what you see on the display Refer to the following illustration and see Key Functions for more information Screen MENU key 1 EXIT key VIEW key POWER LIGHT key 2 3 4 5 6 1 4 WAY Cursor Control key LEFT RIGHT UP or DOWN Cursor keys 3 5 6 4 2 ...

Page 15: ...nds A message will appear to indicate how many seconds there are until shutdown occurs To ensure that shutdown occurs properly and any menu 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 Background submenu Use the 4 WAY Cursor Control key to select Li...

Page 16: ...pond with the current view Main Menu Press the MENU key twice in any view to access the Main Menu which is organized under tabbed headings to help you find a specific menu item quickly 4 WAY Cursor Control Key LEFT RIGHT UP or DOWN Cursor keys The 4 WAY Cursor Control key has multiple functions which depend on the view menu or situation Menu Selection Press the DOWN or UP Cursor keys to highlight ...

Page 17: ...lected press the EXIT key to exit the menu mode and return to the view If a menu is active press the EXIT key to return to the previous level in the menu system From any view press the EXIT key to cycle through the available views in reverse order If Freeze Frame is active press the EXIT key to return to a scrolling display If the Cursor is active press the EXIT key to remove the cursor from the d...

Page 18: ...th Temp Speed Accessory Average Speed Average speed reading with Temp Speed Accessory Cursor Dialog Box Indicates cursor depth on the display and the depth of the bottom directly below the cursor Speed If a Temp Speed accessory is attached the Fishfinder can display the speed of the boat and can keep a Triplog of nautical or statute miles traveled Second Sonar Return When the sonar signal bouncesb...

Page 19: ...asonarreturnandbottomdepthbelow the cursor Low Sonar Intensity Return High Sonar Intensity Return Bait Ball the area under your boat including the following items the 300 Series Fishfinder 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 symbol appears on the display with the depth di...

Page 20: ...ime 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 only the returns from the bottom structure and fish that are within the transducer beam The RTS Window plots the depth and intensity of a sonar return see Sonar Menu Tab RTS Window The Narrow RTS Window indicates the sonar intensity...

Page 21: ...n 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 Tab to set the Sonar Colors Sonar View Original Palette Strong Returns possibly rocks tree limbs or other structure Sonar History Historical Returns scroll left across the view Strong Return possibly compacted sediment or rocks W...

Page 22: ...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 Menu Tab Sonar Colors for more information WhiteLine highlights the strongest sonar returns in white resulting in a distinctive outline This has the benefit of clearly defining the bottom on the display What s on the Sonar Display ...

Page 23: ... 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 sonar return and the depth of the sonar return will be displayed at the bottom of the screen in the cursor dialog box The RTS Window continues to update in Freeze Frame To return to a scrolling display and exit Freeze Frame pre...

Page 24: ...emp Speedaccessoryisconnected the Fishfinder can display the speed of the boat and can keep a Triplog of nautical or statute miles traveled Topography Changes The light part of the display shows where the beam is hitting hard bottom or rising terrain The dark part of the display indicates soft bottom sand mud or descending terrain BottomReturn Usetheappearanceofthebottom return to determine bottom...

Page 25: ...ct itself Use shadows to help you see the image in 3 dimensions oriented in space You can gain insight into the actual shape of an object or the depth to which it has sunk into the bottom through shadows on the display Objects standing on the bottom cast a sonar shadow The longer the shadow the taller the object Fish also cast shadows You can use the shadow to interpret how close the fish is to th...

Page 26: ... 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 ...

Page 27: ... the display that is sometimes present in murky or 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 screen will freeze and a cursor will be displayed Use the 4 WAY Cursor Control key to move the cursor over a sonar return and the depth of the sonar re...

Page 28: ...ss the VIEW key repeatedly the display cycles through the 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 preferences See the following pages for more information about each View NOTE When you change any menu settings that affect the sonar the view will update ...

Page 29: ...change the Digital Readouts Each view displays digital readout information such as speed or time which varies with the view selected and the accessory attached The digital readouts on the Sonar View can be customized See Setup Menu Tab Select Readouts for more information 1 Press the MENU key twice to access the tabbed Main Menu then press the RIGHT Cursor key until the Setup tab is selected 2 Pre...

Page 30: ...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 the cursor over a sonar return The depth of the sonar return will be displayed at the bottom of the screen in the cursor dialog box NOTE If the Depth number is flashing it means that the unit is having tr...

Page 31: ...de of the screen As the depth changes the zoomed view updates automatically The Full Range View is displayed on the right side of the screen The Full Range View includes 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 viewed Digital Readouts cannot be cus...

Page 32: ... are displayed on the left side of the screen and sonar returns from the 200 kHz wide beam are displayed on the right side of the screen Depth is displayed in the upper left hand corner The Digital Readouts in the Split Sonar View cannot be customized therefore information such as water temperature and voltage are unavailable in the Split Sonar View Split Sonar View Depth 455 kHz Sonar History Win...

Page 33: ...o 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 Digits View Depth Temperature Speed Timer shows the time elapsed since Triplog was last reset Distance is the distance traveled since the Triplog was last reset Voltage displays the battery voltage Average Spe...

Page 34: ...onar 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 Imaging View will freeze and a cursor will appear on the screen Use the 4 WAY Cursor Control key to move the cursor over a sonar return The depth of the sonar return at the cursor location will be displa...

Page 35: ...ew Mode 1 Press 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 Default Off See Sonar Menu Tab for more information Set the Digital Depth Source If you connect an ice transducer to the control head set the Digital Depth Source to 2D Element to display d...

Page 36: ...ional 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 always displayed The Digital Readouts cannot be customized Circular Flasher View Ice Fishing Mode Off Flasher Dial Depth Views 28 ...

Page 37: ...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 the display indicates the current palette and the weak to strong sonar return range is displayed from left to right To change the color palette see Flasher X Press Menu Color Palette The Digital Readouts can...

Page 38: ...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 depth reading of the cursor is displayed in the top right corner of the view 4 Close the Cursor Press the EXIT key NOTE See Set the Digital Depth Source for more information Circular Flasher View with the Depth ...

Page 39: ...Close the X Press Menu Press the EXIT key 4 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 side of the flasher dial between two lines The normal view is shown on the left side of the flasher dial 5 Close Zoom Press the MENU key Select Zoom Level from the X Press Menu and pre...

Page 40: ... 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 Control key and the view will freeze and a cursor will appear on both views on the screen Use the 4 WAY Cursor Control key to move the cursor over a sonar return and the depth of the sonar return will be displayed in the cursor dialog box Down Imaging Sonar Com...

Page 41: ...r 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 view Main Menu The Main Menu is a standard set of menu settings which are organized under the following tabbed headings Alarms Sonar and Setup NOTE The X Press Menu s and the Main Menu options can also be expanded or simplified b...

Page 42: ...llowing 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 Normal operation will be selected automatically at power up and your Fishfinder can be used on the water To exit Normal operation power off your Fishfinder Start Up Options Menu 34 ...

Page 43: ...E 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 and you do nothing during power up A message will appear often on the display to indicate Simulator mode To exit Simulator power off your Fishfinder System Status Use System Status to view system connections and...

Page 44: ...rd 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 be detected only if the paddlewheel has moved since your Fishfinder was powered up Accessory Test Self Test Screen Start Up Options Menu 36 ...

Page 45: ... 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 effects of your change immediately 3 Reactivate the X Press Menu by pressing the UP or DOWN Cursor keys Total Screen Update When you change any menu settings that affect the current view the view will update imm...

Page 46: ...u 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 again to change a menu setting A down arrow at the bottom of a menu means that you can scroll to additional menu options using the DOWN Cursor key A right or left arrow on a menu option means that you can use the RIGHT or LEFT Cursor keys to make changes or to see more inf...

Page 47: ...e information If you press MENU or EXIT 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 for all Menu Settings The settings in all menus are adjusted in the same way Simply use the 4 WAY Cursor Control key to highlight a menu option and then change the settings or activate the option see Mai...

Page 48: ...ser 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 menu 4 Press the LEFT or RIGHT Cursor keys to change the User Mode setting Normal Advanced Default Normal NOTE Any changes made while in Advanced Mode will remain in effect after you switch back to Norm...

Page 49: ...41 Sonar Menu Tab Normal Mode Sonar Menu Tab Advanced Mode Main Menu ...

Page 50: ...e 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 details NOTE Menu options are determined by your Humminbird model See the following pages for full menu descriptions Sonar X Press Menu Sonar X Press Menu ...

Page 51: ...nterest 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 water If Sensitivity is adjusted too low the display may not show many sonar returns that could be fish NOTE The Sensitivity setting is a global setting and will adjust the sensitivity of all sonar freque...

Page 52: ... in the lower right corner of the screen to indicate the unit is in 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 the Upper and Lower Range regardless of the manual settings entered For example if you are fishing in 60 feet of water but are only ...

Page 53: ...nly Settings 2x 4x 6x 8x Default 2x Zoom Level sets the magnification level for the Sonar Zoom View Use Zoom to see more detail in the bottom sonar returns that might be displayed close together such as those caused by fish suspended close to the bottom or within structure Zoom Level is only available on the X Press Menu from the Sonar Zoom View The Zoom Preview Box shows the section of the bottom...

Page 54: ...er column measured up from the bottom is shown in the Sonar Zoom View Choose a small value to see low lying bottom structure or details of the bottom return Choose a larger value to see large structure in deeper water NOTE It is possible to set the Bottom Range to be greater than the depth In this case you may see surface clutter in a wavy band that mirrors changes in the depth Sonar X Press Menu ...

Page 55: ...ly 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 simplified by setting the User Mode to Advanced or Normal See Main Menu User Mode for details Down Imaging X Press Menu Down Imaging X Press Menu ...

Page 56: ...clear water or greater depths A high imaging sensitivity setting shows more sonar returns from small baitfish and suspended debris in the water however if the sensitivity is adjusted too high the display may become too cluttered Decrease the Down Sensitivity to eliminate the clutter from the display that is sometimes present in murky or muddy water If the sensitivity is adjusted too low the displa...

Page 57: ...ns 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 High 20 Default 10 NOTE The Sensitivity can be adjusted from the DI Enhance dialog box or the Down Imaging X Press Menu The Sensitivity setting is provided here so that you can easily adjust the Down Imaging data with the other settings...

Page 58: ... unit is in 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 the Upper and Lower Range regardless of the settings entered manually For example if you are fishing in 60 feet of water but are only interested in the first 30 feet surface to a depth of ...

Page 59: ...d is preferred by most anglers however the sonar information moves across the display quickly A slower speed keeps the information on the display longer but the bottom and fish details become compressed and may be difficult to interpret DI Colors Settings Blue Amber 1 Amber 2 Brown Green Inverse Gray Green Red Default Blue DI Colors allows you to select which color palette you would like to use fo...

Page 60: ...ettings Press the MENU key once while in the Circular Flasher View to access the Flasher X Press Menu 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 To activate Ice Fishing Mode see Sonar Menu Tab Flasher X Press Menu Flasher X Press Menu ...

Page 61: ...nar frequencies Upper Range Advanced Sonar Split Sonar Circular Flasher and Big Digits Views only Settings 0 to 990 feet or 0 to 327 meters International Models only Default 0 feet Upper Range sets the shallowest depth range that will be displayed on the Sonar Split Sonar Circular Flasher and Big Digits Views Upper Range is often used with Lower Range NOTE A minimum distance of 10 feet will be mai...

Page 62: ...he colors used to display sonar returns in the Circular Flasher View when Ice Fishing Mode is turned on The active color palette is shown in the center of the circular flasher display The color palettes range from weak to strong sonar return signals which are displayed left to right on the color preview bar See Views Circular Flasher View for more information Choose from the following color palett...

Page 63: ...the Zoom feature is turned off When the Zoom Level is set to 2x the Circular Flasher View displays a 2x magnified view of the area you choose The zoomed view is shown on the right side of the flasher dial between two lines The normal view is shown on the left side of the flasher dial The Zoom Range can be adjusted with the RIGHT and LEFT Cursor key See Views Circular Flasher View for more informat...

Page 64: ...he Main Menu The Alarms tab will be the default selection NOTE 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 instance of the alarm condition is detected Alarms Menu Alarms Menu Tab ...

Page 65: ...ll sound when a large sized fish is detected Low Battery Alarm Settings Off 8 5V to 13 5V Default Off Low Battery Alarm sounds when 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 you when the battery voltage drops below the safety margin that you ha...

Page 66: ...Alarm Tone Settings High Medium Low Default Medium Alarm Tone selects the pitch of the alarm sound A brief tone will be produced as you adjust the Alarm Tone so that you can select the tone that you can hear best For example if the Temp Alarm is set to 58 degrees Fahrenheit and the water temperature falls from 60 degrees to 58 degrees the Temp Alarm will sound Similarly if the water temperature ri...

Page 67: ...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 display the Timer on screen as it counts down see Views To Change the Digital Readouts Start Timer Settings Press the RIGHT Cursor key to start the Timer Start Timer allows you to start the Timer using the saved count...

Page 68: ... the Main Menu and then press the RIGHT Cursor key until the 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 Sonar Menu Advanced Mode Sonar Menu Tab ...

Page 69: ...by your Humminbird model The Down Imaging models allow you to choose 200 kHz or 455 kHz for conical sonar coverage in the traditional sonar views When set to 200 kHz only the returns from the 200 kHz 25 beam will be displayed When set to 455 kHz only the returns from the 455 kHz 16 narrow beam will be displayed 75 Degree Total Coverage 16 25 455kHz 200kHz 75 455kHz 45 800kHz Sonar Menu Tab ...

Page 70: ...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 select 800 kHz 75 Degree Total Coverage 16 25 455kHz 200kHz 75 455kHz 45 800kHz Sonar Menu Tab 62 ...

Page 71: ...aw 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 shown Choose Clear Mode to see less clutter and more fish size accuracy on the display When Clear Mode is selected the clutter is filtered and sonar returns are interpreted to provide more details about the objects...

Page 72: ... fish symbols and targets detected in the 200 kHz conical beam are represented as orange fish symbols When Fish ID is turned off the Fishfinder shows only the raw sonar returns on the display These returns will often result in arches forming on the display indicating potential targets Due to the transducer beam angle the distance to a fish decreases as the fish moves into the beam and then increas...

Page 73: ...nsitivity 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 Sonar RTS Window Settings Wide Narrow Off Default Narrow RTS Window sets the RTS Window to either Wide or Narrow or turns it off in the Sonar View The RTS Window always updates at the fastest rate possible and only displays ret...

Page 74: ... 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 Flasher X Press Menu Color Palette Bottom View Settings Structure ID WhiteLine Default Structure ID Bottom View selects the method used to represent bottom and structure on the display Structure ID represents weak returns in bl...

Page 75: ... 455 kHz Sensitivity adjusts the sensitivity of the 455 kHz beam Increase the sensitivity to display additional weak returns and decrease the sensitivity to display fewer weak returns 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 The depth of each line is displayed along the depth scale Yo...

Page 76: ...finder will acquire bottom readings as needed within the capacity of the unit When Max Depth is set to match your fishing maximum depth your Fishfinder will not attempt to acquire sonar data below that depth so more detail will be shown on the screen NOTE If the bottom is deeper than the Max Depth setting the digital depth readout will flash indicating that the Fishfinder cannot locate the bottom ...

Page 77: ...n 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 Imaging unit change the digital depth source to 2D Element in order to display depth in the digital readout window The 2D Element setting should not be used with a Down Imaging transducer NOTE Visit our Web ...

Page 78: ...urns from the Down Imaging beams only Selecting DI Only provides faster screen updates NOTE When DI Pings is set to DI Only the 2D Element setting will be removed from the Digital Depth Source menu When the Digital Depth Source is set to 2D Element the DI Only setting will be removed from the DI Pings menu See Digital Depth Source for more information NOTE See How Sonar Works Down Imaging Sonar fo...

Page 79: ... format with 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 Sonar Views until you turn off the Ice Fishing Mode See Views Circular Flasher View for more information DI Colors Down Imaging Views only Settings Blue Amber 1 Amber 2 Brown Green Inverse...

Page 80: ... 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 setting the User Mode to Advanced or Normal See Main Menu User Mode for details Setup Menu Tab Advanced Setup Menu Tab ...

Page 81: ...ts Distance selects 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 Units Speed w Temp Speed only Settings Domestic Models mph kts International Models kph mph kts Default mph kph Units Speed selects the units of measure for speed related readouts This menu option is available if...

Page 82: ...stance 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 RIGHT Cursor key and follow screen instructions Use this menu choice with caution Restore Defaults resets ALL menu settings to their factory defaults Select Views Advanced Settings Visible Hidden Default Visible Select Views allows you t...

Page 83: ...ws to change the Select Readouts Data windows can display readouts from supported accessories such as Temp Speed Each data window can be empty or contain one of the following information categories Speed Temperature Triplog Voltage Default Sonar View Sonar View with Select Readouts NOTE The availability of the digital readout information corresponds with the view selected and the accessory attache...

Page 84: ... keel to read the depth from the keel Temp Offset Advanced Settings 10 0 to 10 0 degrees Default 0 Temp Offset will adjust the temperature readout by the amount entered Digits Format Advanced Settings Small tenths Large tenths No tenths Default Small tenths Digits Format adds a tenth decimal place to the readouts such as Temperature and Depth Use the settings to change the display of the decimal p...

Page 85: ... Visible Default Visible Demonstration controls whether the Demonstration Mode is visible or off The Demonstration Mode appears on the screen if you don t press any keys during the warning screen at power up Menu settings cannot be saved in Demonstration see Power On and Start Up Options Menu Sound Control Settings No Sounds Alarms Only All Sounds Default All Sounds Sound Control allows you to set...

Page 86: ... 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 mild soap such as a non abrasive liquid hand soap and warm water Wipe the screen dry with a soft cloth Be careful to avoid scratching the screen If water spots remain use a solution of water and vinega...

Page 87: ...liquid detergent 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 time to wet the transducer when it is returned to the water Small air bubbles can climb to the surface of the transducer and interfere with proper operation These bubbles dissipate with time or you can wipe the face of...

Page 88: ...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 the newly started Fishfinder to go into Normal operating mode automatically If when you power up the Fishfinder it goes into Simulator mode automatically even though a transducer is already connected t...

Page 89: ... 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 Electrical noise from the boat s engine may be interfering with sonar reception See Finding the Cause of Noise for more information Sonar readings may be affected if the transducer is not positioned correct...

Page 90: ... 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 rev the engine the problem could be the spark plugs alternator or tachometer wiring Replace the spark plugs with resistor plugs install an alternator filter or route the control head power and transd...

Page 91: ...z 16 10 dB in 455 kHz Target Separation 2 1 2 Inches 63 5 mm Power Requirement 10 20 VDC LCD Matrix 320 V x 240 H Transducer XNT 9 DI T Transducer Cable Length 20 ft 6 m Current Draw 344 mA IPX Rating IP67 Waterproof Submersible 1 m for 30 minutes and dust tight NOTE Humminbird verifies maximum stated depth in saltwater conditions but actual depth performance may vary due to transducer installatio...

Page 92: ...ntended 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 the Directive and EEE for those applications can be considered excluded from the WEEE Directive requirement This symbol WEEE wheelie bin on product indicates the product must not be disposed of with o...

Page 93: ...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 See dB Down Point dB Down Point The standard decibel level at which the sonar cone angle is measured and is written as 10 dB or 3 dB Measurements at smaller down points bigger negative numbers indicate ...

Page 94: ...surement 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 times higher than RMS numbers Greater power output allows the sonar signal to penetrate through weeds and thermoclines reach deeper depths and operate more effectively in noisy environments such as whe...

Page 95: ...gh 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 downriggers as it impacts the running depth of the down riggers Speed Over Ground is optimal for navigation as accurate destination times can be derived from this measurement Humminbird products a...

Page 96: ...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 the sound wave This element also works in reverse converting the returned sound energy back into an electrical signal that the receiver interprets See SONAR Zoom A feature that focuses on a smaller are...

Page 97: ...g ways By 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 our address is Humminbird Service Department 678 Humminbird Lane Eufaula AL 36027 USA ...

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Humminbird 346c DI, Operation Manual

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