Humminbird 717, 727 manual Glossary, Sonar Terms

Page 86

531524-1_A - 717 & 727 Man_Eng.qxp 9/30/2006 7:24 PM Page 86

Glossary

Sonar Terms:

Alarm, Depth: Depth Alarm is a user-controllable, audible alert that sounds when depth is less than or equal to the setting.

Alarm, Temperature: Temperature Alarm is a user-controllable, audible alert that sounds when the water surface temperature equals the setting.

Backlight: Backlight is a user-controllable illumination for the LCD for night and low light use.

Beam (Sonar Beam): A sonar beam is the wide, cone-shaped projection of sound waves formed as sound travels underwater. See Cone Angle.

Big Digits View: Big Digits View is a Humminbird® feature that displays the sonar graph and enlarged digital readouts for easy reading from a distance. This is a great tool when monitoring the digital depth is important - such as with higher boat speeds, or when viewing the unit from a distance. When speed input is available, the Big Digits View also shows the TripLog. See TripLog.

Bottom Black: Bottom Black is a Humminbird® feature that "fills in" the area of the display below the bottom contour. Bottom Black is preferred by some anglers because of its high contrast and easy readability, even though it can obscure bottom hardness information.

Bottom Contour: Bottom Contour is the profile of the bottom graphed to the display as the depth changes.

Bottom Hardness: Bottom Hardness is the density (or composition) of the bottom, which can often be determined by interpreting the main sonar return. Varying levels of hardness can be determined by interpreting the "thickness" of the sonar return. Hard returns appear thin and black, softer returns appear thicker and less black. It is important to note that a sonar return from a sloping bottom can have the appearance of a softer bottom.

Cavitation: Cavitation is the effect of air bubbles created as the propeller rotates and the boat moves through the water.

81

Image 86
Contents Series Operations Manual Thank You Table of Contents Setup Menu Tab Views Menu Tab Accessories Menu Tab Troubleshooting How Sonar Works 531524-1A 717 & 727 ManEng.qxp 9/30/2006 723 PM DualBeam Plus Sonar QuadraBeam Plus Sonar With optional-purchase QuadraBeam Plus TransducerWideSide Sonar With optional-purchase WideSide transducerUniversal Sonar What’s On the Display AboutOrmation Views Sonar View Sonar ViewUnderstanding Sonar History Real Time Sonar RTS Window Freeze Frame and CursorBottom Presentation 531524-1A 717 & 727 ManEng.qxp 9/30/2006 723 PM 531524-1A 717 & 727 ManEng.qxp 9/30/2006 723 PM Sonar Zoom View Sonar Zoom View200/83 kHz Split Sonar View Big Digits View Big Digits ViewCircular Flasher View Side Beam View, Default Layout Side Beam ViewSide Beam View, Classic Layout Side Beam View, Slanted Layout WideSide View WideSide ViewView Key POWER/LIGHT KeyKey Functions Menu Key WAY Cursor Control KeyExit Key Accessory Bus Powering Up the Unit Menu System 531524-1A 717 & 727 ManEng.qxp 9/30/2006 723 PM Start-Up Options Menu Normal OperationSimulator System Status Self TestWith PC Connect Cable only Accessory TestPC Connect Sonar X-Press Menu Side WideSide transducer WideSide view onlySensitivity Upper Range Lower Range Side Beam Range Chart Speed Bottom ViewQuad Layout Sonar Zoom View only Zoom LevelBottom Lock Sonar Zoom View only, when Bottom Lock is On Bottom RangeSonar Menu Tab Beam Select Fish ID+ Fish ID Sensitivity Advanced Zoom WidthKHz Sensitivity To change the 455 kHz Sensitivity setting Advanced with QuadraBeam Plus transducerWideSide Sensitivity Advanced with WideSide transducerDepth Lines Surface Clutter Noise Filter Max DepthWater Type Transducer Select Alarms Menu Tab Depth Alarm Fish ID AlarmWith optional-purchase temp. probe or Temp/Speed only Low Battery AlarmAux. Temp. Alarm Temp Alarm Alarm ToneSetup Menu Tab Units Distance Units DepthUnits Temp International onlyLanguage User ModeUnits Speed Triplog Reset Restore DefaultsSelect Readouts Advanced, Sonar view onlyDefault Sonar View Customized Sonar View Depth Offset Aux. Temp. OffsetAdvanced, with Temp/Speed only Temp OffsetSpeed Calibration Digits Format Nmea Output Accessory Test Views Menu TabAccessories Menu Tab Troubleshooting Series Doesn’t Power UpDisplay Problems Problem Possible CauseFinding the Cause of Noise IsolationSeries Fishing System Accessories 531524-1A 717 & 727 ManEng.qxp 9/30/2006 724 PM 531524-1A 717 & 727 ManEng.qxp 9/30/2006 724 PM Specifications Operating Frequency kHz and 83 kHz DualBeam Plus531524-1A 717 & 727 ManEng.qxp 9/30/2006 724 PM Glossary Sonar Terms531524-1A 717 & 727 ManEng.qxp 9/30/2006 724 PM 531524-1A 717 & 727 ManEng.qxp 9/30/2006 724 PM 531524-1A 717 & 727 ManEng.qxp 9/30/2006 724 PM 531524-1A 717 & 727 ManEng.qxp 9/30/2006 724 PM Receiver See Transmitter 531524-1A 717 & 727 ManEng.qxp 9/30/2006 724 PM 531524-1A 717 & 727 ManEng.qxp 9/30/2006 724 PM 531524-1A 717 & 727 ManEng.qxp 9/30/2006 724 PM 531524-1A 717 & 727 ManEng.qxp 9/30/2006 724 PM Contact Humminbird