Lowrance x510c ユーザーズマニュアル

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The rate that echoes scroll across the screen is called the chart speed. 

The default is maximum; we recommend that you leave the speed set 

there for virtually all fishing conditions. 

However, you might consider experimenting with chart speed when you 

are stationary or drifting very slowly. You may sometimes achieve bet-

ter images as you slow down the chart speed to match how fast you are 

moving across the bottom. 

If you are at anchor, ice fishing or fishing from a dock, experiment with 

a chart speed around 50 percent. If you are drifting slowly, try a chart 

speed around 75 percent. When you are stationary and a fish swims 

through the sonar signal cone, the image appears on the screen as a 

long line instead of a fish arch. Reducing the chart speed may result in 

a shorter line that more closely resembles a regular fish return.  
If you do experiment with chart speed, remember to reset it to maxi-

mum when you resume trolling or moving across the water at higher 

speed. To change chart speed: 
1. From the Sonar Page, press 

|

↓ to 

|

. 

2. The Chart Speed Control Bar appears. Press 

↓ to decrease chart 

speed; press 

↑ to increase chart speed. 

3. When it's set at the desired level, press 

.