Lowrance electronic LMS-337C DF - Manual (Page 79)

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Normal display, in auto depth range mode, left. At right, display
"zoomed" with Upper and Lower Limits focusing on the portion of the
water column from 20 feet to 40 feet deep. In the "zoomed" image, note
the target definition at lower left, showing a fish holding just above the
structure. At top right, two game fish are attacking a school of bait fish.
To turn off upper and lower limits:
From the Sonar Page, press
MENU |
↓ to
A UTO D EPTH R ANGE
| ENT | EXIT .
FasTrack

This feature automatically converts all echoes to short horizontal lines
on the display's far right side. The graph on the rest of the screen con-
tinues to operate normally. FasTrack gives you a rapid update of condi-
tions directly under the boat. This makes it useful for ice fishing, or
when you're fishing at anchor. When the boat is not moving, fish sig-
nals are long, drawn out lines on a normal chart display. FasTrack con-
verts the graph to a vertical bar graph that, with practice, makes a use-
ful addition to fishing at a stationary location.
Area "zoomed"
Fish arches