Lowrance m68c icemachine 操作ガイド

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Changing the upper and lower limits gives you far greater control over
the depth range. This feature lets you "zoom in" the display in almost
unlimited combinations. Nearly any segment of the water column, from
the surface to the bottom can be shown. This enlarges the sonar targets
to best suit your fishing needs and water conditions.

     

At left, Sonar Page Menu with Upper and Lower Limits command se-

lected. At right, Sonar Chart Limits menu, with Upper Limit selected.

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 ↓ until the first digit is

correct, then 

→ to move to the second digit. Repeat until the depth is

correct, then press 

.

3. To set the lower limit, press 

↓ to 

|

. Press 

↑ or ↓ until

the first digit is correct, then 

→ to move to the second digit. Repeat un-

til the depth is correct, then press 

|

|

.

      

Normal display, in auto depth range mode, left. At right, display

"zoomed" with Upper and Lower Limits focusing on the portion

of the water column from 10 feet to 20 feet deep.