Humminbird 161 - Manual (Page 103)

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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, not
artificial arches or symbols. Humminbird® units are capable of producing fish arches
due to the wide 60° sonar beam of DualBeam PLUS
TM , an extremely sensitive sonar
receiver. See Fish Arch.
Viewing Angle: Viewing Angle is an attribute of an LCD that characterizes visibility
of the display when viewing from off the central access, such as when standing to
the side of the fishfinder. Wider viewing angles are better because the information
remains visible even when viewing from the side.
WhiteLine®: WhiteLine® is a Humminbird® feature that highlights the strongest
sonar return on the display using a very light gray band. This is preferred by some
anglers who have grown accustomed to the feature on paper graph chart recorders.
WideSide®: WideSide® is a Humminbird® sonar configuration used in an optional
transducer. WideSide® uses three sonar beams pointing to the left, right and down.
Beams pointing to the left and right are effective for spotting fish and structure near
the surface or on the bank. The downlooking beam provides depth information
directly below the boat.