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Total Screen Update®: A Humminbird® feature that refreshes and updates all the sonar
information on the display when a range change occurs. Without Total Screen Update®,
only the most recent sonar information would be drawn to the new range, and the old
sonar information would continue to scroll off the screen at the old range.
Transducer: The transducer mounts on the boat and is in contact with the water. It
converts the electrical energy from the transmitter into sound energy, forming the
sonar beam. Internally, the transducer consists of one or more piezo electric disks that
expand by very minute amounts to create the sound wave. This element also works in
reverse, converting the returned sound energy back into an electrical signal that the
receiver interprets. Transducers are available for many specific mounting applications
for the boat, such as a transom mount, trolling motor mount, etc. Humminbird® offers
many sophisticated transducers, often with multiple piezo electric elements designed
to form specifically-shaped sonar beams, providing the angler with superior tools for
finding and catching fish. See Transmitter and SONAR.
Transmitter: The transmitter and receiver are matched parts of the sonar system that
send (transmit) and listen to (receive) the sonar signals, and work in conjunction with
the transducer. Humminbird® transmitters have an extremely fast cycling design that
can send signals up to 60 times per second, as well as produce the varying levels of
power output needed for different depths and conditions. Additionally, the transmitter
has the capability to create very precise sonar pulses needed for a high degree of target
separation. Humminbird® receivers are extremely sensitive, but within a narrow
"bandwidth" to discriminate against noise from external sources. Additionally, the
receiver offers a wide "dynamic range" which provides the ability to receive very strong
signals alternating with very weak signals, without the strong signal overwhelming the
weak signal. See Transducer and Noise.
TripLog: TripLog is a Humminbird® feature that provides an on-screen counter for
Elapsed Time, Average Speed and Total Distance traveled, and requires a speed input to
activate the feature. TripLog appears on the Big Digits View, and can be reset to zero
through the TripLog menu.
TrueArch®: TrueArch® is a Humminbird® feature that provides true fish arches, as
opposed to artificial arches or symbols. Humminbird® units are capable of producing
fish arches due to the extremely sensitive DualBeam PLUS™ sonar receiver with its wide
60° sonar beam. See Fish Arch.