Garmin GPSMAP 4008 Owner's Manual

Also see for GPSMAP 4008 - Marine GPS Receiver: Technical reference Important safety information Owner's manual Supplement Owner's manual

Contents

Garmin GPSMAP 4008 Owner's Manual Manual pdf 91 page image

GPSMAP® 4000/5000 Series Owner’s Manual 87SonarSonarWhen connected to an optional Garmin GSD sounder module and a transducer, all GPSMAP 4000/5000 seriesmodels can be used as fishfinders. The GSD connects through the Garmin Marine Network and shares sonardata with every chartplotter connected to the network.Sonar ViewsThe chartplotter shows sonar data using three different views: a full-screen view, a split-zoom view, and asplit-frequency view.Full-screen Sonar ViewThe full-screen sonar view shows a full-view graph of sonar readings from a transducer. The range scale alongthe right side of the screen shows the depth of detected objects as the screen scrolls from the right to the left.From the Home screen, select Sonar > Full Screen.Full-screen Sonar View➋➌➊➍➎➏➊ Depth, temperature, and water speed ➍ GPS speed and GPS heading➋ Suspended target ➎ Transducer frequency➌ Bottom ➏ RangeSetting the Zoom Level on the Full-screen ViewYou can zoom in on a section of the full-screen sonar view.1. From the Home screen, select Sonar > Full Screen > Menu > Zoom.2. Complete an action:• Select 2x Zoom Auto Lock to zoom in on the sonar data at two-times magnification.• Select 4x Zoom Auto Lock to zoom in on the sonar data at four-times magnification.• Select Manual Zoom to set the depth range of the magnified area manually. Select View Up orView Down to set the depth range of the magnified area. Select Zoom in or Zoom out to increase ordecrease the magnification of the magnified area, and select Done.• Select Bottom Lock to zoom in on sonar data from the bottom depth, select Up or Down to set thedepth range of the magnified area, and select Done.