Lowrance electronic X47EX manual Grayline

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SENSITIVITY AUTOMATIC/MANUAL

To adjust sensitivity:

Press MENU until the SENSITIVITY ADJUSTMENT menu appears. Press UP ARROW to increase the sensitivity, DOWN ARROW to decrease it. When it's set at the desired level, press PWR to clear the menu.

The sensitivity percentage in use shows in this menu. As you change the setting, echoes scrolling onto the screen will show the effects of the change. If you reach the maximum or minimum sensitivity level, a tone sounds alerting you to the limits.

NOTE:

If you want to change the sensitivity in Manual Mode, first turn off Auto Sensitivity: press MENU until the menu appears. Press DOWN ARROW to select MANUAL, then press PWR to clear the menu.

To adjust the sensitivity, follow the same steps used for adjusting sensitivity in auto mode above.

GRAYLINE®

Graylinelets you distinguish between strong and weak echoes. It "paints" gray on targets that are stronger than a preset value. This allows you to tell the difference between a hard and soft bottom. For example, a soft, muddy or weedy bottom returns a weaker signal which is shown with a narrow or no gray line. A hard bottom returns a strong

signal which causes a wide gray line.

If you have two signals of equal size, one with gray and the other without, then the target with gray is the stronger signal. This helps distinguish weeds from trees on the bottom, or fish from structure.

Grayline is adjustable. The factory default for this unit is 72 percent. Since Grayline shows the difference between strong and weak signals, adjusting the sensitivity may also require a different Grayline level. The level chosen by the sonar unit at power on is usually adequate for most conditions. Experiment with your unit to find the Grayline setting that's best for you.

To change the Grayline level, press MENU until the GRAYLINE menu appears.

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Contents X47 and X47EX Page Table of Contents Display Contrast Introduction Installation Preparations Shoot-through hull installations Transom installationTrolling motor installations Good location Poor location Location Poor angle Transom Transducer centerline Hull bottom Transom Transducer Assembly and MountingRatchets DotTransom Metal Nut washer RubberWashers BoltFlat-bottom hull Deep-vee hull BottomHull Internal tooth washer TMB-S bracket Bolt Nut Flat washer Trolling Motor Bracket InstallationFull fish arch Proper transducer angle Transducer Orientation and Fish ArchesSHOOT-THRU-HULL Preparation Partial fish arches Transducer aimed Too far backEpoxy the transducer to a solid portion of the hull Spread epoxy here Sand this surface Transducer location High speed Trolling speedPower and Cable Connections For the X47EX For 146.5113.5 Millimeters Inches Cut along this line Top137.9 157.9 Millimeter Inch 56.9 173.972.9 Front 107.5 82.776.9 Millimeter Inch 70.3 For Depress ratchets to release Bracket frontCell battery Page Hull Transducer Tie Nylon Cord here SuctionCup Bolt Nut Washer Transducer CupKeyboard Basics OperationMenu MemoryMenus Digital depth Water Temp Full Chart Zoom Enlarged fish arches SensitivityBait school Fish Arches Grayline Thin or no Grayline Wider Grayline Fish arches Fish I.D. symbolsFish I.D. Fishtrack Fish I.D. symbols showing FishTrack depth indicator Chart Scroll SpeedAlarms Display Adjustments Backlights System Info Display ContrastDepth Units of Measure Simulator Troubleshooting Page Noise Page In-dash mounting template for Page Lowrance Electronics Full ONE-YEAR Warranty How to Obtain Service… Accessory Ordering Information for all countries Visit our web site