Fish-finding Sonars & Mapping GPS Model FishElite 502C iGPS Manual Installation and Operation Instructions

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Sonar page zoomed to 2X (left). Sonar page zoomed to 4X (right).
Zoom Pan
Your unit has the handy ability to zoom in on any portion of the water
column with just the touch of an arrow key. The Zoom Pan feature lets
you rapidly move the zoomed area up and down to different depths. By
pointing your zoom at different portions of the chart as it scrolls, you can
get a close-up look at structure or cover below you.
To use Zoom Pan, switch to a manual Depth Range setting and turn on
2X or 4X Zoom. Then press ↑
↓ to pan up and down the water column.