Grayscale, Inverse: Inverse Grayscale is a Humminbird® feature that reverses the correlation of sonar signal strength and the sha de of gray ty pically used to represent it . The st rongest sonar sig nals a re represented by “white“, and progressively weaker signals are represented in progressively darker shades of gray. While somewhat
Instant I mage Up date: Instant Image U pdate is a Hu mminbird® fe ature that updates all the sonar information on the display when Sensitivity and a variety of sonar settings ( Bottom View, Range, e tc.) are modified. This differs from the traditional functionality that onl y updates the n ew sonar information collected after the setting change. Instant Image Update permits more accurate
Maximum Depth Menu: The Maximum Depth Menu is a H umminbird® feature that optimizes performance based on the maximum operational depth set by the user. Many Humminbird® units can operate across a very broad depth range (up to 2500 feet) which causes the unit to “ look“ up to that full depth under some circumstances. Due t o the spee d of sou nd in water, th is can resul t i n l ess responsiveness because the unit hasto wait for a longer period of time to receive the sonar signal. When the Maximum Depth menu is set toa lower value, the unit only looks up to the setting, which increases the responsiveness of the unit. This is an important feature for anyoneoperating in shallower depths!
Noise: Noise is unintentional, external sound waves that interfere withthe optimal operation of sonar. Noise appears as random “dots“ on the display, and is caused by a variety of sources. Electrical noise (from trolling motors, bilge pumps, VHF radios) typically m anifests as a consiste nt dot p attern. Electrical noise c an be isolated by selectively turning on and off other electrical devices to determine the source. Often
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