Humminbird 937C DF COMBO, 937C COMBO Inside the Hull Transducer Installation, Trial installation

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INSIDE THE HULL TRANSDUCER INSTALLATION

If you choose to mount your transducer inside the hull of your boat, perform the procedures in this section. The inside the hull mounting procedure is identical regardless of what type of transducer you have (Single or Dual frequency). In-hull mounting generally produces good results in single thickness fiberglass-hulled boats. Humminbird® cannot guarantee depth performance when transmitting and receiving through the hull of the boat, since some signal loss occurs. The amount of loss depends on hull construction and thickness, as well as the installation position and process.

This installation requires slow-cure two-part epoxy. Do not use silicone or any other soft adhesive to install the transducer, as this material reduces the sensitivity of the unit. Do not use five-minute epoxy, as it has a tendency to cure before all the air bubbles can be purged, thus reducing signal strength.

NOTE: In-hull mounting requires an installed and operational control head.

NOTE: Your transducer may not look exactly like the transducer shown in the illustrations, but it will mount in exactly the same way.

Preferred Mounting Area

1

2

1 Rivets/Strakes

2 Step

Determine the transducer mounting location:

Decide where to install the transducer on the inside of the hull. Consider the following to find the best location:

•Observe the outside of the boat hull to find the areas that are mostly free from turbulent water. Avoid ribs, strakes and other protrusions, as these create turbulence.

•As a general rule, the faster the boat can travel, the further aft and closer to the centerline of the hull the transducer has to be located in order to remain in contact with the water at high speeds.

Trial installation:

You will not be able to adjust the mounting after an inside the hull transducer is installed. It is best, therefore, to perform a trial installation first that includes running the boat at various speeds, in order to determine the best mounting area before permanently mounting the transducer.

1.Plug the transducer into the control head, then power up the control head. When the control head detects a functioning transducer, it will automatically enter Normal operating mode.

2.View the sonar signal at its best by holding the transducer over the side, immersed in the water, so that it is pointing straight down over a known flat bottom. Use the display to benchmark against the sonar signal that will be detected once the transducer is placed in the hull.

3.Place the transducer body face down at the identified mounting location inside the hull, with the end that has the mounting ears pointed towards the bow of the boat.

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Contents Page Thank YOU Table of Contents Menu System Start-Up Options Menu Contact Humminbird Single Beam Sonar Series IntroductionHOW the 900 Series Works Dualbeam Plus SonarMULTI-MEDIA Card MMC/SD Slot Multi-Media Card MMC/SD SlotAccessory Bus Accessory BUSInstallation Overview 900 Series has a wide variety of configurationsBasic installation tasks that you must perform include Control Head InstallationGimbal Mounting the Control Head Mounting Screws Washer Gimbal Mounting Bracket Cables Routed Near Mounting Bracket Back of Control Head IN-DASH Mounting the Control Head Plug Cable Connector Assembly to Back of Control Head TemperatureTransducer Installation Connecting the Control Head Power Cable to the BoatDetermine transducer mounting location Transom Transducer InstallationTo determine transducer mounting location Route the transducer cableCorner of the template Moves clockwise as the boat movesConfirm that the pivot angle has not changed Normal CavitationTo attach the pivot to the transducer Dual frequency unit Attaching the BracketOrder to gain access to the mounting screws, Force is necessary to pivot the assemblyTo route the transom transducer cable all transducers Trial installation Inside the Hull Transducer InstallationDetermine the transducer mounting location Make sure the position of the transducer is marked Permanently mount the transducerRoute the cable Inside the HullTrolling Motor Transducer Installation Test and Finish the Transducer InstallationHand-tighten only Stem Mounting with AN Existing 1 14 Thread StemIf you have… Then use Follow these steps to stem mount the GPS receiverAccess Under Mounting Location To the cable as shownNo Access Under Mounting Location Finish Routing the Cable and Check GPS Receiver OperationInstall the Speed accessory Speed Accessory InstallationHand tighten only Routing the speed cable to the control head Cleaning the Speed accessoryRotating Retaining Axial Clip to Remove Paddlewheel Testing the System Installation To test the installationPowering UP the Control Head Getting Started Using Your 900 SeriesSeries 937c DF Combo Title Screen WHAT’S on the Sonar Display TriplogReal Time Sonar RTS Window Understanding Sonar HistoryBottom Presentation KEY Functions POWER/LIGHT KEYMARK/GOTO key Info key Zoom +/- key WAY Cursor Control KEY View KEYMenu KEY Fishing requirements see View Menu TabInfo KEY View Preset KeysExit KEY MARK/GOTO KEYSonar views ViewsViews and Readouts Navigation viewsSonar Zoom View Sonar ViewSonar View Sonar Zoom View Split Sonar ViewBIRD’S EYE View Bird’s Eye ViewChart/Bird’s Eye Combo View Chart View with Active CursorChart/Sonar Combo View 1112Chart Orientation Chart View with Cursor PresentNavigation To save the marked position as a waypoint Waypoints, Routes and TracksNavigate to a Waypoint or Position Chart View with Grid Chart View with TargetADD a Waypoint Target or Trolling Grid Save or Clear a Current Track Menu System Press MenuSTART-UP Options Menu Sonar Tab, Normal ModeStart-Up Options Menu Simulator Exit Normal operation by powering your 900 Series offNormal Operation SimulatorSystem Status Accessory TestSelf Test Accessory Test Self TestGPS Diagnostic View Sonar X-PRESS MenuSensitivity Active SideSplit Position Upper Range To adjust the Upper RangeTo adjust the Lower Range Lower RangeBottom Lock Chart SpeedZoom Level Sonar ColorsHighlight Split Position on the Navigation X-Press Menu Navigation X-Press MenuClear Current Track Save Current TrackSave Current Route Remove Target Cancel NavigationRemove Grid To use Beam Select Sonar Menu TABBeam Select Highlight Beam Select on the Sonar main menuFish ID Sensitivity To change the Fish ID Sensitivity settingFish ID+ To turn Fish ID+ on or offZoom Width To adjust the Bottom ViewBottom View To change the Zoom WidthSurface Clutter KHZ SensitivityDepth Lines Noise FilterWater Type MAX DepthTransducer Select Color BAR Temperature GraphNavigation Menu TAB Routes TracksWaypoints Trackpoint Interval North ReferenceTrolling Grid Rotation Track MIN DistanceExport ALL NAV Data MAP DatumDelete ALL NAV Data To change the Chart Detail Level setting Chart Menu TABChart Detail Level To change the Map Borders settingSpot Soundings LAT/LON GridShaded Depth SET MAP Offset Alarms Menu TABClear MAP Offset LOW Battery Alarm Depth AlarmFish ID Alarm Temp AlarmDrift Alarm OFF Course AlarmArrival Alarm To change the Off Course Alarm settingTo change the Alarm Tone setting Alarm ToneHighlight Alarm Tone on the Alarms main menu To change the Units Temp setting Setup Menu TABTo change the Units Depth setting Units DepthUnits Speed User ModeUnits Distance LanguageTo Reset Triplog Triplog ResetRestore Defaults To Restore DefaultsDefault Sonar View Customized Sonar View To Select ReadoutsSpeed Calibration Depth OffsetTemp Offset Local Time ZoneDaylight Saving Time Position FormatFollowing Nmea sentences are output Nmea OutputSonar To turn Nmea Output on or offTo Change the View Status of Any View Accessories Menu TABViews Menu TAB Highlight the View main menu tabSeries Doesn’t Power Up TroubleshootingSeries Defaults to Simulator with a Transducer Attached Display Problems Problem Possible CauseNoise re-appears Finding the Cause of NoiseOther electronic devices Boat’s engineYear Limited Warranty Humminbird Service PolicySeries Accessories Returning Your Unit for ServiceFor IN-WARRANTY service, complete the following steps Specifications Power OutputPlace on bottom of hull Appendix aAlign with transom Appendix B Contact Humminbird
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