Lowrance electronic LCX-17M - Manual (Page 78)

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Does that mean Fish I.D. is broken? No. The feature is simply
interpreting sonar returns in a specific way to help take some of the
work out of reading the screen. Remember: Fish I.D. is one of the many
tools we provide so you can analyze your sonar returns for maximum
fish finding information. This and other features can help you
successfully "see" beneath the boat under varied water and fishing
conditions. Practice with Fish I.D. mode on and off to become more
familiar with it. The default for Fish I.D. is off.
Sonar Features highlighted (left); Fish I.D. Symbols selected (right).
To turn the Fish I.D. feature on:
1. From the Sonar Page, press MENU |
↓ to
S ONAR F EATURES
| ENT.
2. Press
↓
to F ISH S YMBOLS
| ENT | EXIT | EXIT .
To turn off Fish I.D., repeat the instructions in step 1.