Humminbird 937C DF COMBO manual Confirm that the pivot angle has not changed, Normal Cavitation

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To mount the transducer pivot assembly to the bracket (Single frequency units):

1.Insert the pivot/transducer assembly into the mounting bracket.

2.Do not snap the assembly closed.

3.Apply marine-grade silicone sealant to the mounting holes drilled into the transom.

4.Align the transducer assembly with the drilled holes in the transom.

 

 

5. Using the appropriate tool for your mounting hardware,

 

 

attach the transducer assembly to the boat transom as

1

 

shown, using #8 x 5/8” (16 mm) wood screws. Do not fully

 

 

tighten the mounting screws in order to adjust the

 

 

transducer vertically. Snap the pivot down into place.

 

 

NOTE: The running position of the transducer is now

 

 

completely adjustable. Subsequent adjustment may be

1

Kick-Up Bracket

necessary to tweak the installation after high speed testing.

 

To adjust the running position of the transducer (Single frequency unit):

The transducer mounting bracket allows height and tilt adjustment, while the pivot bolt allows angular adjustment. These adjustments will help reduce cavitation. Initially, adjust the transducer as described in the following paragraphs. Further adjustment may be necessary to refine the installation after high-speed testing.

Normal Cavitation

Cavitation that will cause

 

erratic sonar readings

1.First, adjust the pivot angle of the transducer body, so its length is parallel with the length of the hull of the boat. Then, using the angle portion of the mounting template, pivot the transducer down so that it matches the template angle as shown on the template itself.

2.Fully tighten the pivot bolt, using a Phillips head screwdriver and a wrench. It may be necessary to re-tighten the pivot bolt after initial use as the plastic may still be conforming to the pressure from the lock washers.

3.Before removing the template, adjust the height of the assembly so the face of the transducer touches the face of the template. Mark the position of the mounting bracket on the transom with a pencil.

4.Force the pivot to the Up position to gain access to the mounting screws. Make sure that the transducer location has not changed, then hand tighten the two mounting screws. Snap the pivot back down.

5.Confirm that the pivot angle has not changed.

NOTE: when you are done with this procedure, go to the section entitled: To route the transducer cable.

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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 configurationsControl Head Installation Basic installation tasks that you must perform includeGimbal 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 Inside the Hull Transducer Installation Trial 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 OperationSpeed Accessory Installation Install the Speed accessoryHand tighten only Cleaning the Speed accessory Routing the speed cable to the control headRotating Retaining Axial Clip to Remove Paddlewheel Testing the System Installation To test the installationGetting Started Using Your 900 Series Powering UP the Control HeadSeries 937c DF Combo Title Screen WHAT’S on the Sonar Display TriplogUnderstanding Sonar History Real Time Sonar RTS WindowBottom Presentation POWER/LIGHT KEY KEY FunctionsMARK/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 View Sonar Zoom 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 Target Chart View with GridADD a Waypoint Target or Trolling Grid Save or Clear a Current Track Menu System Press MenuSonar Tab, Normal Mode START-UP Options MenuStart-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 MenuActive Side SensitivitySplit 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 MenuSave Current Track Clear Current TrackSave Current Route Cancel Navigation Remove TargetRemove 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 FilterMAX Depth Water TypeTransducer Select Temperature Graph Color BARNavigation Menu TAB Tracks RoutesWaypoints Trackpoint Interval North ReferenceTrolling Grid Rotation Track MIN DistanceMAP Datum Export ALL NAV DataDelete ALL NAV Data To change the Chart Detail Level setting Chart Menu TABChart Detail Level To change the Map Borders settingLAT/LON Grid Spot SoundingsShaded Depth Alarms Menu TAB SET MAP OffsetClear MAP Offset LOW Battery Alarm Depth AlarmFish ID Alarm Temp AlarmDrift Alarm OFF Course AlarmArrival Alarm To change the Off Course Alarm settingAlarm Tone To change the Alarm Tone settingHighlight 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 tabTroubleshooting Series Doesn’t Power UpSeries 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 PolicyReturning Your Unit for Service Series AccessoriesFor IN-WARRANTY service, complete the following steps Specifications Power OutputAppendix a Place on bottom of hullAlign with transom Appendix B Contact Humminbird
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