Eagle Electronics manual Frequency Change Transducer Frequency SeaFinder 320DF only

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Fish

not

visible

Fish arch

Visible

fish

Fish arches

Sonar chart in regular grayscale mode, left, and in FishReveal mode, right. Notice how shallow fish formerly hidden in the surface clutter become visible in FishReveal mode.

NOTE:

Water conditions vary greatly, and that affects sonar performance. Under certain conditions, FishReveal will show you more fish than normal grayscale mode, but the reverse will be true in other circum- stances. We suggest you become familiar with both modes so you can best match your sonar's performance to the current water conditions.

Frequency (Change Transducer Frequency) (SeaFinder 320DF only)

The "DF" in your unit's name refers to its dual-frequency transducer, which operates with both 200 kHz and 50 kHz. The 200 kHz frequency has a 12° cone angle and the 50 kHz frequency has a 35° cone angle.

The default frequency is 200 kHz, which is best for use in shallow water (about 300 feet or less). This frequency is the best choice for about 80 percent of the fresh and salt water sport fishing applications. When you get into very deep salt water, 300 to 500 feet or deeper, the 50 kHz fre- quency is the best choice.

The 200 kHz transducer will give you better detail and definition, but less depth penetration. The 50 kHz transducer will give you greater depth penetration, but a little less detail and less definition. (Remember, all sonar units typically read deeper in fresh water than in salt water.)

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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 InstallationDual-frequency transom installations Single-frequency transom installationsSingle-frequency trolling motor installations Shoot-through hull installationsGood and poor transducer locations Transom Transducer centerline Hull bottom Dot Transom Transducer Assembly and MountingAlignment Alignment lettersPositions TransducerRatchets Metal Nut Washer Rubber Bolt Flat washer Lock washer NutWashers BoltTransom Hull BottomFlat-bottom hull Deep-vee hull Internal tooth washer TMB-S bracket Bolt Nut Flat washer Transducer aimed Partial fish archesToo far back Full fish arch Proper transducer angleSHOOT-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 Power c able Accessory Transducer Cable Sonar unit Rear view Power/transMounting the Unit Bracket, In-Dash or Portable Ducer socketFront 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 deep alarm To adjust and turn on the shallow alarmTo adjust and turn on the zone alarm Brightness To turn the fish alarm onCalibrate Speed Chart SpeedDepth Cursor ContrastDepth box Depth Range Automatic To switch to Manual Depth RangeDepth Range Manual FasTrack Fish I.D. Fish Symbols & DepthsTo turn Auto Depth Range on again Bar graphPage Page FishTrack Symbols with FishTrack depthsFishReveal Press → ↓ to Fish ID DepthsentexitexitPage Fish Not Visible Fish arch Fish arches Frequency Change Transducer Frequency SeaFinder 320DF onlyGrayline Grayline Hard Bottom Muddy bottom Hard Fish nearNoise Rejection HyperScrollOverlay Data Hard Muddy bottom bottom GraylineTo change displayed data font size To turn off displayed dataPing Speed & HyperScroll Page Pop-up Help Reset OptionsScreen Contrast and Brightness Reset Water DistanceSensitivity & Auto Sensitivity Page Set Keel Offset Press MENUMENU↓ to SET Keel Offsetent Software Version Information Set LanguagePress MENUMENU↓ to Software Infoent 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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