Eagle Electronics 500CDF manual Sensitivity & Auto Sensitivity

Page 85

2.The Keel Offset dialog box appears with a plus (+) sign at the front of the box.

3.Press to the first number, then press to change the number to 1.

4.Press to the second number, them press to change the num- ber to 5, then press EXIT. The depth indicators now accurately show the water depth from surface to bottom.

Sensitivity & Auto Sensitivity

The sensitivity controls the ability of the unit to pick up echoes. Sensi- tivity can be adjusted, because water conditions vary greatly. A low sensitivity level (from zero to 50 percent) excludes much of the bottom information, fish signals, and other target information.

High sensitivity levels let you see this detail, but it can also clutter the screen with many undesired signals. Typically, the best sensitivity level shows a good solid bottom signal with Graylineand some surface clut- ter.

Automatic Sensitivity

The default sensitivity mode is automatic. The unit bases the sensitiv- ity level on water depth and conditions. When the unit is in the auto- matic mode, sensitivity is automatically adjusted to keep a solid bottom signal displayed, plus a little more power. This gives it the capability to show fish and other detail.

However, situations occur when it becomes necessary to increase or de- crease the sensitivity. This typically happens when you wish to see more detail, so an increase in sensitivity is indicated. Or, wave action and boat wakes can create enough tiny air bubbles to clutter much of the water column. In that case, a decrease in sensitivity is indicated to reduce some of the clutter.

The control bar used to adjust sensitivity up or down is the same whether the unit is in the automatic or manual mode. In automatic you

79

Image 85
Contents Installation and Operation Instructions Page Table of Contents ColorLine level To turn Auto Sensitivity back on Page How this manual can get you out on the water, fast Read Me FirstPage Figuration and installation, bottom composi How Sonar Works How to Use this Manual Typographical Conventions Page Preparations Transducer InstallationSingle-frequency transom installations Pad Deadrise less than Strakes Good and poor transducer locations Transom Page Dot Alignment letters Positions Transducer Ratchets Bolt Transom Bottom Hull Flat-bottom hull Deep-vee hull Internal tooth washer TMB-S bracket Bolt Nut Flat washer Transducer mounted on trolling motor, side view Partial fish arches Hulls With Flotation Materials Transducer location High speed Trolling speed Page Epoxy transducer to hull Speed/Temperature Sensors Optional Speed Sensor Installation Good location Power Connections Power connections for the sonar unit Page Front 72.9 173.9 23.4 157.9 Millimeter 56.9 Inch In-Dash Template Face Cover Page Keyboard Basic Sonar OperationPower/lights on and off Main Menu Pages Pages Menu, showing Sonar display options Page Page Sonar Page, showing full sonar chart mode Basic Sonar Quick Reference Sonar Operations Page Page Important Tip Page Page Page ASP Advanced Signal Processing Sonar Options & Other FeaturesAlarms To adjust and turn on the shallow alarm To turn off the alarm, press ALARM↓ to Deep Alarm Enabledentexit Backlight Level Calibrate Speed Chart Speed ColorLine Thin or no ColorLine Wider ColorLine Depth Cursor ContrastDepth Range Manual Depth Range AutomaticFasTrack Fish I.D. Fish Symbols & Depths FishTrack Frequency Change Transducer Frequency SeaFinder CDF only Symbols with FishTrack depthsSonar Features menu with a frequency of 200 kHz selected Noise Rejection HyperScrollOverlay Data Page To return to the previous page, press Exit Tip Ping Speed & HyperScrollPage Pop-up Help Reset Options Screen Contrast and Backlight Level Reset Water DistanceSet Keel Offset Press MENUMENU↓ to SET Keel Offsetent Sensitivity & Auto Sensitivity Page Software Version Information Set LanguageSonar Page & Sonar Chart Display Options Sonar Chart ModePage Page Customizing the Digital Data/Chart Screen Sonar Simulator Stop Chart Surface Clarity Press ↓ or ↑ to select clarity levelEXITEXIT Units of Measure TransparencyZoom & Zoom Bar VolumeZoom Pan Troubleshooting Page Page Page Supplemental Material FCC Compliance Page Index Page Page 102 103 How to Obtain Service… Accessory Ordering Information for all countries Visit our web site