Table of Contents
How Sonar Works ........................................................................................................................................ 1
DualBeam PLUS™ Sonar ............................................................................................................................ 3
Software Updates ........................................................................................................................................ 6
Powering Up the Control Head ................................................................................................................ 47
What's on the Sonar Display .................................................................................................................. 48
Understanding Sonar History .................................................................................................................... 50
Sonar Bottom Presentation ...................................................................................................................... 51
ii
1
4
4
5
6
7
9
18
40
45
46
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