Lowrance lcx-20c 用户手册

66

  

Sonar Page Menu with Upper and Lower Limits command selected
(left);  Sonar Chart Limits menu, with Upper Limit selected (right).

To change the upper and lower limits:

1. From the Sonar Page, press 

↓

 to 

|

.

The Sonar Chart Limits menu appears, with Upper Limit selected.

2. To set the upper limit, press 

. Press 

↑ or ↓ to change the first

number, then press 

→ to move the cursor to the next number and

repeat until the depth is correct, then press 

.

3. To set the lower limit, press 

↓ to 

|

. Press 

↑ or ↓ to

change the first number, then press 

→ to move the cursor to the next

number and repeat until the depth is correct, then press 

  

Normal display, in auto depth range mode, (left); Display "zoomed" with

Upper and Lower Limits focusing on the portion of the water column

from 25 feet to 45 feet deep (right). In the "zoomed" image on the right,

note the target definition, showing two fish holding just off the structure.

To turn off upper and lower limits:
From the Sonar Page, press 

|

↓ to 

|

FasTrack



This feature automatically converts all echoes to short horizontal lines
on the display's far right side. The graph on the rest of the screen
continues to operate normally. FasTrack gives you a rapid update of