Eagle Electronics 242 manual

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Weak bottom echo, digital readings erratic, or no fish signals:

1.Make certain the transducer is pointing straight down. Clean the face of the transducer. Oil, dirt and fuel can cause a film to form on the transducer, reducing its effectiveness. If the transducer is mounted in- side the hull, be sure it is shooting through only one layer of fiberglass and that it is securely bonded to the hull. Do NOT use RTV silicone rubber adhesive or Marine-Texepoxy.

2.Electrical noise from the boat's motor can interfere with the sonar. This causes the sonar to automatically increase its Discrimination or noise rejection feature. This can cause the unit to eliminate weaker signals such as fish or even structure from the display.

3.The water may be deeper than the sonar's ability to find the bottom. If the sonar can't find the bottom signal while it's in the automatic mode, the digital sonar display will flash continuously. It may change the range to limits far greater than the water you are in. If this happens, place the unit in the manual mode, then change the range to a realistic one, (for exam- ple, 0-100 feet) and increase the sensitivity. As you move into shallower water, a bottom signal should appear.

4.Check the battery voltage. If the voltage drops, the unit's transmitter power also drops, reducing its ability to find the bottom or targets.

Bottom echo disappears at high speeds or erratic digital read- ing or weak bottom echo while boat is moving

1.The transducer may be in turbulent water. It must be mounted in a smooth flow of water in order for the sonar to work at all boat speeds. Air bubbles in the water disrupt the sonar signals, interfering with its ability to find the bottom or other targets. The technical term for this is cavitation.

2.Electrical noise from the boat's motor can interfere with the sonar. This causes the sonar to automatically increase its Discrimination or noise rejection feature. This can cause the unit to eliminate weaker sig- nals such as fish or even structure from the display.

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Contents Cuda 242 Portable Copyright 2006 LEI-Eagle All rights reserved Table of Contents Troubleshooting Capabilities and Specifications Cuda 242 & Cuda Portable GeneralSonar sounding Back-up memorySonar Automatic rangingHow Sonar Works Installation PreparationsRecommended 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 Operation Keyboard BasicsMemory 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 Alarms Fish AlarmDepth Alarms Shallow AlarmDeep Alarm Battery Alarm Noise Reject and ASP Temperature Display Depth DisplayTo display Depth To display Temperature To display battery voltage VoltageUnits Backlight ContrastSimulator Set LanguageSoftware Information To select a languageReset Options Unit turns on only in simulator mode Unit wont turn onUnit freezes, locks up, or operates erratically Page No fish arches when the Fish I.D. feature is off NoisePage Eagle Electronics How to Obtain Service… Not toll-freeAccessory Ordering Information for all countries Visit our web site