Insignia manual Using the 450TX, HOW Sonar Works

Page 8

USING THE 450TX

HOW SONAR WORKS

HOW SONAR WORKS

Your Humminbird unit uses sonar to locate and define underwater objects, define the bottom terrain, as well as determine distance.

Sonar technology is based on sound waves. Your Humminbird unit sends out a sound wave signal. With this signal it determines distance by measuring the time between the transmission of the sound wave and when the sound wave is reflected off an object. Your Humminbird uses the reflected signal to interpret location, size and composition of an object.

Sonar is very fast. A sound wave can travel from the surface to a depth of 70m (240') and back again in less than ¹⁄₄ of a second. It is unlikely that your boat can "outrun" this sonar signal.

The 450TX is a dual frequency, tri-beam unit, and generates three distinct sonar signals - one narrow, two wide. Each signal is optimized for a particular purpose. First, the center beam transmits at a frequency of 200 kHz in a 20 degree (narrow) symmetrical pattern for greater depth capability and excellent detail. Information from this center beam is used to draw the graphic representation of the bottom on the display.

The left and right beams are generated at 455 kHz for increased sonar resolution and are shaped in an elliptical pattern for greater area of coverage. Information from these two beams in conjunction with the center beam is used to accurately detect the presence and location of fish.

The combination of the three beams and dual frequencies, provides the best possible combination of a large area of coverage and a high level of detail.

6

Page 7 Page 9
Image 8
Page 7 Page 9
Contents Operations Manual Cal Table of Contents Installation Preparation AccessoriesInstallation Overview Parts SuppliedInstallation Overview Determining How to Mount the TransducerAlternate Transducers and Mounting Methods Alternate Transducers and Mounting MethodsPortable Mounting Trolling Motor MountingTransducer Exchange Beginning InstallationTransducer Exchange HOW Sonar Works Using the 450TXHOW Sonar Works Simulator Operation Simulator OperationWhat You See On-Screen Feature MemoryWhat YOU see ON-SCREEN Installed Shows What YOU see on Screen Control Functions Control Functions 2d View Large Digit View Chart View Arrow Keys. The UP Arrow and Down Arrow make Menu Functions Menu FunctionsLow Sensitivity Using the 450TX Box will move vertically to remain in the general Using the 450TX Using the 450TX Voltages in excess of 20 or less Using the 450TX Bottom Black View ID+ On Raw Sonar Using the 450TX Speed offset is remembered after power is disconnected Using the Diagnostic Feature Advanced FeaturesUsing Diagnostic Advanced Features Advanced Features Wide side operation Using Alternative TransducersUsing Alternative Transducers Advanced Features Maintenance Maintenance and TroubleshootingMaintenance TroubleshootingThere is no transducer detected TroubleshootingNothing happens when I turn the unit on Unit comes on before I press POWER, and won’t turn off There is no bottom reading visible on the displayMy unit loses power at high speeds Get gaps in the reading at high speedsSpecifications TOP
Top Page Image Contents