Eagle Electronics 320 manual SHOOT-THRU-HULL Preparation

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If the arch slopes up – but not back down – then the front of the trans- ducer is too high and needs to be lowered. If only the back half of the arch is printed, then the nose of the transducer is angled too far down and needs to be raised.

NOTE:

Periodically wash the transducer's face with soap and water to re- move any oil film. Oil and dirt on the face will reduce the sensitivity or may even prevent operation.

SHOOT-THRU-HULL PREPARATION

The transducer installation inside a fiberglass hull must be in an area that does not have air bubbles in the resin or separated fiberglass lay- ers. The sonar signal must pass through solid fiberglass. A successful transducer installation can be made on hulls with flotation materials (such as plywood, balsa wood or foam) between layers of fiberglass if the material is removed from the chosen area.

Fill with epoxy

Flotation material

Inner hull

Epoxy to hull first

Outer hull

 

Epoxy the transducer to a solid portion of the hull.

For example, some (but not all) manufacturers use a layer of fiberglass, then a core of balsa wood, finishing with an outer layer of fiberglass. Removing the inner layer of fiberglass and the balsa wood core exposes the outer layer of fiberglass. The transducer can then be epoxied di- rectly to the outer layer of fiberglass. After the epoxy cures, the hull is watertight and structurally sound. Remember, the sonar signal must pass through solid fiberglass. Any air bubbles in the fiberglass or the epoxy will reduce or eliminate the sonar signals.

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Contents FishMark 320 SeaFinder 320DF Page Table of Contents Fish I.D. Fish Symbols & Depths How this manual can get you out on the water, fast Read Me FirstGeneral Figuration and installation, bottom composi How Sonar Works How to use this manual typographical conventionsPage Page Preparations Transducer InstallationShoot-through hull installations Single-frequency transom installationsDual-frequency transom installations Single-frequency trolling motor installationsGood and poor transducer locations Transom Transducer centerline Hull bottom Dot Transom Transducer Assembly and MountingTransducer Alignment lettersAlignment PositionsRatchets Bolt Bolt Flat washer Lock washer NutMetal Nut Washer Rubber WashersTransom Flat-bottom hull Deep-vee hull BottomHull Internal tooth washer TMB-S bracket Bolt Nut Flat washer Full fish arch Proper transducer angle Partial fish archesTransducer aimed Too far backSHOOT-THRU-HULL Preparation Transducer location High speed Trolling speed Spread epoxy here Sand this surface Speed/Temperature SensorsRear view Sonar unitGood location Transom Bottom of hull Power ConnectionsOptional power off switch for Ducer socket Sonar unit Rear view Power/transPower c able Accessory Transducer Cable Mounting the Unit Bracket, In-Dash or PortableFront 173.9 23.4 137.9 157.9 Millimeter 56.9 Inch 72.9113.5 Millimeters Inches 146.5Face Cover Cell batteryKeyboard Basic Sonar OperationPower/lights on and off Menus Main Menu Commands Sonar Menu Commands Pages Sonar Page, showing full sonar chart mode. bar graph Page Basic Sonar Quick Reference Sonar Operations Page Important Tip To Restore Factory SettingsPage Page Sonar Options & Other Features Alarms To adjust and turn on the zone alarm To adjust and turn on the shallow alarmTo adjust and turn on the deep alarm Brightness To turn the fish alarm onCalibrate Speed Chart SpeedDepth box ContrastDepth Cursor Depth Range Manual To switch to Manual Depth RangeDepth Range Automatic Bar graph Fish I.D. Fish Symbols & DepthsFasTrack To turn Auto Depth Range on againPage Page Press → ↓ to Fish ID Depthsentexitexit Symbols with FishTrack depthsFishTrack FishRevealPage Fish Not Visible Fish arch Fish arches Frequency Change Transducer Frequency SeaFinder 320DF onlyGrayline Grayline Hard Bottom Muddy bottom Hard Fish nearHard Muddy bottom bottom Grayline HyperScrollNoise Rejection Overlay DataTo change displayed data font size To turn off displayed dataPing Speed & HyperScroll Page Pop-up Help Reset OptionsSensitivity & Auto Sensitivity Reset Water DistanceScreen Contrast and Brightness Page Set Keel Offset Press MENUMENU↓ to SET Keel Offsetent Press MENUMENU↓ to Software Infoent Set LanguageSoftware Version Information Sonar Chart Display Options Sonar Color ModePage Page Customizing the Digital Data/Chart Screen Sonar Simulator Stop ChartPress ↓ or ↑ to select clarity levelEXITEXITEXIT Surface ClarityZoom & Zoom Bar Units of MeasureZoom Pan Page Troubleshooting Page Noise Page Page Page Supplemental Material How to Obtain Service… Accessory Ordering Information for all countries Visit our web site
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320 specifications

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