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Zoom: Zoom is a feature that focuses in on a smaller area of the bottom to provide
enhanced resolution. With enhanced resolution, the angler can more easily see fish
hanging in structure or multiple fish hanging close together. Split screen zoom divides
the display into the full range view on the right, and the zoomed view on the left.
Humminbird® offers One-Touch® Zoom which allows the zoom feature to be easily
accessed from the regular sonar view with just one key press, eliminating the need to
use menus to access the feature.
Zoom, Bottom Lock: Bottom Lock Zoom is a feature that focuses on a smaller area just
above the bottom to provide enhanced resolution. Unlike regular zoom, it continuously
graphs the bottom at a constant point on the display regardless of changes in depth.
This "flattens" out the bottom contour, but is effective at showing fish on or near the
bottom, and is preferred by many saltwater anglers.
GPS & Navigation Terms:
Acquisition Time: The length of time that a GPS receiver typically takes to determine a
position from at least three satellites. Humminbird® GPS receivers provide very fast
acquisition times (under one minute), permitting users to get out on the water faster.
Alarm, Arrival: The audible alert that sounds when the boat is equal to or less than the
alarm setting (25 feet–3000 feet) from the location of the destination waypoint.
Alarm, Drift: Drift Alarm is an audible alert that sounds when the boat is equal to or over
the alarm setting (25 feet–3000 feet) from the location where the alarm was turned on.
Alarm, Off-Course: Off-Course Alarm is an audible alert that sounds when the boat’s
distance from the intended Track, (Cross Track Error), is equal to or over the alarm setting
(25 feet – 3000 feet). See Track and Cross Track Error.
Altitude: Altitude measures height above sea level. Altitude is a measurement that can
be provided by GPS.
Bearing (BRG): Bearing is the direction to a destination waypoint measured in degrees
from North (i.e. 321°, where 000° is North, 090° East, 180° is South, 270° is West).
Chartplotter: Chartplotter describes a navigation device that shows Present Position on
a Map, along with Tracks, Waypoints, and Routes. All Chartplotters are also considered
Trackplotters. All Humminbird® GPS Combo units are Chartplotters. See Trackplotter.