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Changing the upper and lower limits gives you far greater control over
the depth range. This feature lets you "zoom in" the display in almost
unlimited combinations. Nearly any segment of the water column, from
the surface to the bottom can be shown. This enlarges the sonar targets
to best suit your fishing needs and water conditions.
Sonar Page Menu with Upper and Lower Limits command selected
(left); Sonar Chart Limits menu, with Upper Limit selected (right).
To change the upper and lower limits:
1. From the Sonar Page, press
MENU|↓ to UPPER AND LOWER LIMITS|ENT.
The Sonar Chart Limits menu appears, with Upper Limit selected.
2. To set the upper limit, press
ENT. Press ↑ or ↓ to change the first
number, then press → to move the cursor to the next number and
repeat until the depth is correct, then press
EXIT.
3. To set the lower limit, press ↓ to
LOWER LIMIT|ENT. Press ↑ or ↓ to
change the first number, then press → to move the cursor to the next
number and repeat until the depth is correct, then press
EXIT|EXIT|EXIT.
Normal display, in auto depth range mode, (left); Display "zoomed" with
Upper and Lower Limits focusing on the portion of the water column
from 25 feet to 45 feet deep (right). In the "zoomed" image on the right,
note the target definition, showing two fish holding just off the structure.
Fish arches
Area "zoomed"