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54 GPSMAP 5000 Series Owner’s Manual
Using Sonar
USinG
Sonar
Advanced Sonar Settings
To adjust advanced sonar settings, touch Menu while viewing a sonar screen.
Gain—control the sensitivity of the sonar receiver. Touch Auto or touch Up or Down (or drag the
adjustment bar) to manually adjust the gain. To see more detail, increase the gain. If the screen is
cluttered, decrease the gain.
Pause Sonar—select to stop scrolling. Touch Create Waypoint to save the location as a waypoint,
and touch Resume to continue scrolling in real time. For more information on waypoints, see
page 25.
Frequency—select how the frequencies appear on screen (200kHz, 50kHz, or Dual) when using a
dual frequency transducer.
Zoom—zoom in to a section of the Full screen. The zoom is off (No Zoom) by default. Three other
options are available:
2x Zoom—twice the magnication. Touch Up, Down, or Auto to set the depth range of the
magnied area.
4x Zoom—four times the magnication. Touch Up, Down, or Auto to set the depth range of the
magnied area.
Bottom Lock—lock the zoom window to the bottom. Touch Up or Down to set the depth range
of the magnied area.
Range—adjust the range of the depth scale on the right side of the screen. Touch Auto or touch Up
or Down (or drag the adjustment bar) to manually adjust the range.
Sonar Setup—open the Sonar Setup screen (page 53).
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