Eagle 640c 用户指南

63

       

Sonar Page menu (left) with Depth Cursor command selected. Sonar

chart (right) with the depth cursor active. The school of fish is 31.91

feet deep.

The cursor can be moved to any location on the screen, letting you pin-
point the depth of a target.

1. From the Sonar Page, press 

|

↓ to 

|

.

2. The depth cursor appears. Press 

↓ to lower the cursor line; press ↑ to

raise the cursor line.

3. To clear the depth cursor, press 

.

Depth Range - Automatic

When turned on for the first time, the bottom signal is automatically
placed in the lower half of the screen. This is called Auto Ranging and
is part of the units automatic function. However, depending upon the
bottom depth and the current range, you can change the range to a dif-
ferent depth. To do this:

1. From the Sonar Page, press 

|

↓ to 

|

.