NorthStar 6000i, Quickstart Manual And Reference Manual

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Reference section 6 — Echo sounding
Zooming in and out
Northstar 6000i
Bottom lock/center zoom
When you select bottom lock/center zoom ,
the flattened-out sea bottom is 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.
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 the depth marker,
press the cursor pad up or down.
Leaving zoom mode
To return to the normal unzoomed display,
just press
Zoom
repeatedly until you have
cycled through all the zoom modes.
Bottom loc k /center zoom
Mar k er zoom