Lowrance electronic Fish Finder 用户手册

45 

1. From the Sonar Page, press 

|

. 

2. The Sensitivity Control Bar appears. Press 

↓ to decrease sensitivity; 

press 

↑ to increase sensitivity. When it's set at the desired level, press 

. (When you reach the maximum or minimum limit, a tone sounds.) 

1. From the Sonar Page, press 

|

↓ to 

|

. 

2. The Ping Speed Control Bar appears. Press 

↓ to decrease ping speed 

to 50 percent. When it's set at the desired level, press 

. 

When you enable HyperScroll, the width of the FasTrack bar graph 

display doubles in width at the right side of the screen, giving you a 

better view of Fastrack's instantaneous sonar returns. 

This command is used to reset all features, options 

and settings to their original factory defaults. This 

is useful when you have changed several settings 

and want to return the unit to basic automatic op-

eration. 

1. Press 

|

|

↓ to 

|

↓ to 

|

. 

2. Press 

↑ or ↓ to 

|

. 

3. All features and options are returned to the factory default settings. 

The sensitivity controls the ability of the unit to pick up echoes. A low 

sensitivity level (from zero to 50 percent) excludes much of the bottom 

information, fish signals, and other target information. High sensitivity 

levels let you see this detail, but it can also clutter the screen with many 

undesired signals. Typically, the best sensitivity level shows a good solid 

bottom signal with Colorline and some surface clutter. 
Automatic Sensitivity 
This unit has two sensitivity modes: Automatic and Manual. In auto-

matic you can adjust sensitivity up to 100 percent but the unit will 
limit your minimum setting.  
In manual mode, you have complete control over sensitivity, with the 

ability to set it anywhere from zero to 100 percent.