Lowrance electronic Fish Finder Manual Do Utilizador

47 

1. Press 

|

|

↓ to 

|

. 

2. The Keel Offset dialog box appears. Press 

↓ to so that the displayed 

number shows a minus (–) sign instead of the plus (+) sign. 
3. Press 

↓ until the number shows – 3.5, then press 

. The depth 

indicators now accurately show the depth of water beneath the keel. 
Waterline Offset 
You can get a more precise measure of water depth by using waterline 

offset, which takes into account the distance from the transducer to the 

waterline when calculating depth.  
Before setting waterline offset, you must measure the distance from the 
transducer to the waterline on your boat. If, for example, the transducer 
is 1.5 feet below the waterline, it will be input as +1.5 feet. 

1. Press 

|

|

↓ to 

|

. 

2. The Keel Offset dialog box appears with a plus (+) sign at the front of 

the box. 
3. Press 

↑ until the displayed number is + 1.5 and press 

. The 

depth indicators now accurately show the water depth from surface to 

bottom. 

The default color scheme for the sonar chart is grayscale, but we offer 

other variations to suit your viewing preferences. You have the chart 

displayed in reverse grayscale, bottom black or FishReveal mode.  

1. From the Sonar Page, press 

|

↓ to 

|

. 

2. Press 

↓ to 

|

. 

3. Press 

↓ or ↑ to Mode Name|

. 

4. Press 

|

 to return to the Sonar Page. 

The M52 Pro offers f

ive Sonar chart display options. To choose among 

them, press 

 to clear any menus, then press 

 and use the ar-

row keys to select the desired mode. 
Full Sonar Chart 
This is the default mode used when the Sonar is turned on for the first 

time or when it's reset to the factory defaults. The bottom signal scrolls 

across the screen from right to left. Depth scales on the right side of the