Using bottom lock/ center zoom
When you select bottom lock/center zoom, the sea bottom is flattened out and displayed in the center of the screen. You can see any fish near the bottom, as with the bottom lock zoom, and also examine the seabed’s composition.
Using marker zoom When you select marker zoom, you can choose the part of the water column to magnify. The top edge of the magnified area
is determined by the location of the depth marker. To move
491 Echo Sounder Operations Manual | Page 21 |
