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Power Output: Power output is the amount of sound energy emitted into the water by
the sonar transmitter. Power output is measured using either RMS (Root Mean Square)
or P-T-P (Peak-to-Peak) measurement systems. Either method is acceptable, but it is
important, when comparing power outputs, to make sure that the same measurement
system is being used for both outputs, because P-T-P numbers are 8 times higher than
RMS numbers. Greater power output allows the sonar signal to penetrate through
weeds and thermoclines, reach deeper depths and operate more effectively in noisy
environments, such as when the boat is running at high speed.
Pulse Width (Pulse Length): Pulse Width is the length of time that a sonar sound burst
is transmitted into the water. Shorter pulse widths provide better target separation, but
cannot travel to great depths. Longer pulse widths provide better depth penetration,
but result in poorer target separation. Humminbird® varies pulse width based on depth
to optimize both target separation and depth performance. See Target Separation.
QuadraBeam™: QuadraBeam™ is a Humminbird® sonar configuration that uses four
sonar beams for a more detailed bottom image. QuadraBeam™ uses the DualBeam
PLUS™ configuration for downlooking, and also adds two additional beams to look to
the left and right. The sonar beams pointing to the left and right provide the ability to
spot fish and structure over a wide 90° area, and to identify on which side of the boat
they are located. See DualBeam PLUS™.
Quick Disconnect Mount: The Quick Disconnect Mounting system is an exclusive
Humminbird® feature that permits the unit to be easily removed from the mounting
base by pressing a release button, and re-installed by simply snapping it back into place.
All cable connections are made when installing, so that no separate wiring connections
are required. Additionally, the mount offers 90° tilt and 360° swivel capability to adjust
the viewing angle of the unit as you move about the boat.
Real Time Sonar: Real Time Sonar is a Humminbird® technology that delivers ultra-fast
sonar transmitter/receiver operation and results in a more detailed instantaneous view
of what is under the boat. The Real Time Sonar window is a vertical band at the right
side of the display that shows the instantaneous sonar return from the transducer at a
particular instant. The RTS® Window menu option permits the user to adjust the
window to show the full sonar signal return, or just a narrower band that indicates
intensity using grayscale. Real Time Sonar relies on very fast Sonar Update Rate (Ping
Speed). See Sonar Update Rate.
Receiver: See Transmitter.