NorthStar Navigation NorthStar 491 manual 4Understanding Depth Settings

4Understanding Depth Settings

Viewing the seabed depth . . . . . . . . . . . . . . . . 4-36

Viewing the depth marker . . . . . . . . . . . . . . . . 4-36

Changing the depth settings . . . . . . . . . . . . . . 4-36

Setting the picture’s shift (starting depth) . . 4-37

Setting the picture’s range . . . . . . . . . . . . . . . . 4-38

This chapter explains how to override the system’s auto- matic depth settings and manually control the depth range shown on the screen, and how to use the depth marker.

491 Echo Sounder Operations Manual Page 35