NorthStar Navigation Echo Sounder 491 用户手册

491 Echo Sounder Operations Manual

Page 11

2

Quick Start: Using the Echo Sounder

Displaying the echo sounder’s picture . . . . 2-12

Using demo mode . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Introducing the displayed information . . . . 2-15

Using automatic mode . . . . . . . . . . . . . . . . . . . . 2-16

Changing the frequency of echoes . . . . . . . . 2-17

Zooming in and out . . . . . . . . . . . . . . . . . . . . . . . 2-19

Setup functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

T

his chapter shows you how to start using the echo sounder,

and explains several of the echo sounder’s important features.