At left, Sonar Page Menu with Upper and Lower Limits command se- lected. At right, Sonar Chart Limits menu, with Upper Limit selected.
To change the upper and lower limits:
1.From the Sonar Page, press MENU↓ to UPPER AND LOWER LIMITSENT. 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 re- peat until the depth is correct, then press EXIT.
3.To set the lower limit, press ↓ to LOWER LIMITENT. 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
EXITEXITEXIT.
Fish arches
Area "zoomed"
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 around the structure.
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