Humminbird 937C COMBO, 937C DF COMBO manual WHAT’S on the Sonar Display, Triplog

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WHAT’S ON THE SONAR DISPLAY

The 900 Series™ can display a variety of useful information about the area under and adjacent to your boat, including the following items:

1

Triplog	3

10

2

4

7Speed - if a Speed accessory or GPS Receiver is attached, the 900 Series™ can display the speed of the boat, and can keep a triplog of nautical or statute miles traveled.

8 Thermoclines - layers of water with

different temperatures that appear

at different depths and different

times of the year. A thermocline

typically appears as a continuous

6

5

9

8

band of many colors moving across

the display at the same depth.

9Sonar Color Bar - color spectrum indicating low to high sonar intensity returns, where red indicates high intensity and white indicates low intensity.

10Bait Ball

7

Triplog

12

11

1	Depth - water depth; can be set to alarm when the water becomes too shallow.	5 Barometric Pressure - Requires optional-purchase WeatherSense®
2	Timer - Elapsed time with Speed accessory or GPS Receiver.	6 Temperature - water surface temperature

3Distance - Distance traveled with Speed accessory or GPS Receiver.

4Average Speed - Average speed reading with Speed accessory or GPS Receiver.

11RTS® (Real Time Sonar) Window

12Second Sonar Return - when the sonar signal bounces between the bottom and the surface of the water and back again. Use the appearance of the second return to determine bottom hardness. Hard bottoms will show a strong second return, while soft bottoms will show a very weak one or none at all.

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Contents Page Thank YOU Table of Contents Menu System Start-Up Options Menu Contact Humminbird Series Introduction HOW the 900 Series WorksSingle Beam Sonar Dualbeam Plus SonarMULTI-MEDIA Card MMC/SD Slot Multi-Media Card MMC/SD SlotAccessory BUS Installation OverviewAccessory Bus 900 Series has a wide variety of configurationsGimbal Mounting the Control Head Control Head InstallationBasic installation tasks that you must perform include 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 BoatTransom Transducer Installation To determine transducer mounting locationDetermine 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 Determine the transducer mounting location Inside the Hull Transducer InstallationTrial installation Permanently mount the transducer Route the cableMake sure the position of the transducer is marked Inside the HullTrolling Motor Transducer Installation Test and Finish the Transducer InstallationStem Mounting with AN Existing 1 14 Thread Stem If you have… Then useHand-tighten only 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 OperationHand tighten only Speed Accessory InstallationInstall the Speed accessory Rotating Retaining Axial Clip to Remove Paddlewheel Cleaning the Speed accessoryRouting the speed cable to the control head Testing the System Installation To test the installationSeries 937c DF Combo Title Screen Getting Started Using Your 900 SeriesPowering UP the Control Head WHAT’S on the Sonar Display TriplogBottom Presentation Understanding Sonar HistoryReal Time Sonar RTS Window MARK/GOTO key Info key Zoom +/- key POWER/LIGHT KEYKEY Functions View KEY Menu KEYWAY Cursor Control KEY Fishing requirements see View Menu TabView Preset Keys Exit KEYInfo KEY MARK/GOTO KEYViews Views and ReadoutsSonar views Navigation viewsSonar View Sonar ViewSonar Zoom 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 ADD a Waypoint Target or Trolling Grid Chart View with TargetChart View with Grid Save or Clear a Current Track Menu System Press MenuStart-Up Options Menu Sonar Tab, Normal ModeSTART-UP Options Menu Exit Normal operation by powering your 900 Series off Normal OperationSimulator SimulatorAccessory Test Self Test Accessory TestSystem Status Self TestGPS Diagnostic View Sonar X-PRESS MenuSplit Position Active SideSensitivity To adjust the Upper Range To adjust the Lower RangeUpper Range Lower RangeChart Speed Zoom LevelBottom Lock Sonar ColorsHighlight Split Position on the Navigation X-Press Menu Navigation X-Press MenuSave Current Route Save Current TrackClear Current Track Remove Grid Cancel NavigationRemove Target Sonar Menu TAB Beam SelectTo use Beam Select Highlight Beam Select on the Sonar main menuTo change the Fish ID Sensitivity setting Fish ID+Fish ID Sensitivity To turn Fish ID+ on or offTo adjust the Bottom View Bottom ViewZoom Width To change the Zoom WidthKHZ Sensitivity Depth LinesSurface Clutter Noise FilterTransducer Select MAX DepthWater Type Navigation Menu TAB Temperature GraphColor BAR Waypoints TracksRoutes North Reference Trolling Grid RotationTrackpoint Interval Track MIN DistanceDelete ALL NAV Data MAP DatumExport ALL NAV Data Chart Menu TAB Chart Detail LevelTo change the Chart Detail Level setting To change the Map Borders settingShaded Depth LAT/LON GridSpot Soundings Clear MAP Offset Alarms Menu TABSET MAP Offset Depth Alarm Fish ID AlarmLOW Battery Alarm Temp AlarmOFF Course Alarm Arrival AlarmDrift Alarm To change the Off Course Alarm settingHighlight Alarm Tone on the Alarms main menu Alarm ToneTo change the Alarm Tone setting Setup Menu TAB To change the Units Depth settingTo change the Units Temp setting Units DepthUser Mode Units DistanceUnits Speed LanguageTriplog Reset Restore DefaultsTo Reset Triplog To Restore DefaultsDefault Sonar View Customized Sonar View To Select ReadoutsDepth Offset Temp OffsetSpeed Calibration Local Time ZoneDaylight Saving Time Position FormatNmea Output SonarFollowing Nmea sentences are output To turn Nmea Output on or offAccessories Menu TAB Views Menu TABTo Change the View Status of Any View Highlight the View main menu tabSeries Defaults to Simulator with a Transducer Attached TroubleshootingSeries Doesn’t Power Up Display Problems Problem Possible CauseFinding the Cause of Noise Other electronic devicesNoise re-appears Boat’s engineYear Limited Warranty Humminbird Service PolicyFor IN-WARRANTY service, complete the following steps Returning Your Unit for ServiceSeries Accessories Specifications Power OutputAlign with transom Appendix aPlace on bottom of hull Appendix B Contact Humminbird