Eagle Electronics 250 DF, 250 DS manual Selecting a Transducer Location

Page 12

Shoot-through hull installations

Tools: these will vary depending on your hull's composition. Consult

your boat dealer or manufacturer. Supplies: 100 grit sandpaper, good quality epoxy adhesive.

Selecting a Transducer Location

1.The transducer must be placed in a location that has a smooth flow of water at all times. If the transducer is to be mounted inside the hull, then the chosen location must be in the water at all times. If the transducer is not placed in a smooth flow of water, interference caused by bubbles and turbulence will show on the sonar's display in the form of random lines or dots whenever the boat is moving.

NOTE:

Some aluminum boats with strakes or ribs on the outside of the hull create large amounts of turbulence at high speed. These boats typically have large outboard motors capable of propelling the boat at speeds faster than 35 mph. Typically, a good location on alumi- num boats is between the ribs closest to the engine.

2.The transducer should be installed with its face pointing straight down, if possible.

3.If the transducer is mounted on the transom, make sure it doesn't interfere with the trailer or hauling of the boat. Also, don't mount it closer than approximately one foot from the engine's lower unit. This will prevent cavitation (bubble) interference with propeller opera- tion.

4.If possible, route the transducer cable away from other wiring on the boat. Electrical noise from engine wiring, bilge pumps and aerators can be displayed on the sonar's screen. Use caution when routing the transducer cable around these wires.

8

Image 12
Contents FishEasy 250 DS & SeaFinder 250 DF Copyright 2006 LEI-Eagle All rights reserved Table of Contents Troubleshooting Introduction GeneralBack-up memory SonarAutomatic ranging Zoom bottom trackHow Sonar Works Dual Search & Dual Frequency PreparationsPage Page Section Installation & Accessories Recommended Tools and SuppliesSelecting a Transducer Location How low should you go? Shoot-thru-hull vs. Transom Mounting Transom Transducer Assembly and Mounting Insert bolt and check transducer position on transom Assemble transducer and bracket Bottom Hull Flat-bottom hull Deep-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 True bottom Second bottom Manual range setting Transducer location High speed Trolling speed Shoot-thru-hull Installation Power and Cable Connections Page In-Dash Installation Mounting The Sonar Unit In-Dash or BracketBracket Installation In-Dash Template173.9 137.9 72.9 23.4 157.9 Millimeter 56.9 Inch Portable Installation Portable Transducer Assembly Tie nylon Cord here Suction Portable transducer installed on boat transom Operation Keyboard BasicsMemory MenusUP & Down Arrows ↑ ↓ Display Full Chart FasTrack Depth Range Zoom Sensitivity To adjust sensitivity in Auto Mode To adjust sensitivity in Manual ModeGrayline Grayline scroll bar Chart Speed Frequency Fish I.D. Fish arches Fish I.D. symbols FishTrack Alarms Fish AlarmDepth Alarms Shallow Alarm Deep Alarm Battery AlarmNoise Rejection and ASP Noise Rejection menu Temperature Display Depth DisplayTo display Depth To display Temperature Voltage UnitsBacklight To display voltageContrast SimulatorSet Language Software InformationTo select a language Reset Options Page 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 Page Page Eagle Electronics How to Obtain Service… Not toll-freeAccessory Ordering Information for all countries Visit our web site