Advanced Sonar Settings - Garmin GPSMAP 4010 Owner's Manual

Using Sonar

Advanced Sonar Settings

To adjust advanced sonar settings, select
Gain—controls the sensitivity of the sonar receiver (Auto or, to adjust manually, Up or Down). To
see more detail, increase the gain. If the screen is cluttered, decrease the gain.
Sonar Scroll—select to stop scrolling. Select
and select Resume to continue scrolling in real time. For more information on waypoints, see
page 23.
Frequency—selects how the frequencies appear on screen (200kHz, 50kHz, or Dual).
Zoom—zoom in to a section of the Full Screen. The zoom is off, or set to No Zoom, by default.
Four options are available:
• 2x Zoom—twice the magnification. Select Up, Down, or
magnified area.
• 4x Zoom—four times the magnification. Select Up, Down, or
magnified area.
• Bottom Lock—locks the zoom window to the bottom. Select Up, Down, or
depth range of the magnified area.
• No Zoom—turns zooming off.
Depth Line—quickly reference a specific depth (Show or Hide). When Show is selected, press
up or down on the ROCKER
series) to set the depth of the reference line.
Range—the range of the depth scale on the right side of the screen (Auto, or to adjust manually, Up
or Down).
Sonar Setup—opens the Sonar Setup screen. See
48
Menu
while viewing a sonar screen.
Create Waypoint
(GPSMAP 4000 series) or touch and drag the line (GPSMAP 5000
page
to save the location as a waypoint,
Auto
to set the depth range of the
Auto to set the depth range of the
47.
GPSMAP 4000/5000 Series Owner's Manual
®
Auto to set the