Eagle Electronics 242 manual Noise Reject and ASP

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Noise Reject and ASP

The ASP(Advanced Signal Processing) feature is a noise rejection system built into the sonar unit. It constantly evaluates the effects of boat speed, water conditions and electrical interference and automati- cally gives you the best display possible under most conditions.

ASP is an effective tool in combating noise. In sonar terms, noise is any undesired signal. It is caused by electrical and mechanical sources such as bilge pumps, engine ignition systems, wiring, air bubbles passing over the face of the transducer and even vibration from the engine. In all cases, noise can produce unwanted marks on the display.

Noise Rejection menu.

The ASP noise rejection feature is especially useful because, typically, it lets you operate the boat at all speeds without adjusting the sensi- tivity or other controls.

The ASP feature has three settings — Off, Low and High. When first turned on, noise rejection is set on low. If you have high noise levels, try using the high ASP setting. If, however, you are having trouble with noise, we suggest you take steps to find the interference source and fix it, rather than continually using the unit with the high ASP setting.

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Contents Cuda 242 Portable Copyright 2006 LEI-Eagle All rights reserved Table of Contents Troubleshooting General Capabilities and Specifications Cuda 242 & Cuda PortableSonar Back-up memorySonar sounding Automatic rangingHow Sonar Works Preparations InstallationRecommended Tools and supplies Selecting a Transducer Location How low should you go? Shoot-Thru-Hull vs. Transom Mounting Transom Transducer Assembly and Mounting Align plastic ratchets in bracket Insert bolt and check transducer position on transom Transom Page Bottom Hull Flat-bottom hullDeep-vee hull Attach motor mounting bracket to transducer Transducer Orientation and Fish Arches Transducer angles and their effects on fish arches Shoot-Thru-Hull Preparation Testing Determines Best Location Second bottom True bottom Manual range setting Shoot-Thru-Hull Installation Epoxy transducer to hull Power Connections permanent mount only To unit Red wire with Amp fuse Black wire Volt battery Page 107.5 82.7 156 Page Portable Sonar Installation Installing the Batteries Mounting the Unit Page Tie Nylon Cord here Suction Portable Transducer Storage Page Keyboard Basics OperationMemory MenusUP & Down Arrows ↑ ↓ Display Full Chart Depth Range Zoom Zoom Range menu with the 40-80 foot zoom selected To adjust sensitivity in Auto Mode To adjust sensitivity in Manual ModeSensitivity Grayline Grayline control bar Chart Speed Chart Speed control bar Fish I.D. FishTrack Fish Alarm AlarmsShallow Alarm Depth AlarmsDeep Alarm Battery Alarm Noise Reject and ASP Temperature Display Depth DisplayTo display Depth To display Temperature To display battery voltage VoltageUnits Contrast BacklightSet Language SimulatorTo select a language Software InformationReset Options Unit turns on only in simulator mode Unit wont turn onUnit freezes, locks up, or operates erratically Page Noise No fish arches when the Fish I.D. feature is offPage Eagle Electronics Not toll-free How to Obtain Service…Accessory Ordering Information for all countries Visit our web site