Lowrance x510c ユーザーズマニュアル

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To choose the proper location for shoot-thru-hull mounting, follow these 

testing procedures: (You may need a helper to complete these steps.) 
1. Anchor the boat in about 30 feet of water. Add a little water to the sump 

of the boat. Plug the transducer into the sonar unit, turn it on, then 

hold the transducer over the side of the boat in the water. Adjust the 

sensitivity and range controls until a second bottom echo is seen on the 

display. (You'll need to turn off Auto Sensitivity, Auto Depth Range and 
ASP

™. Try a range setting that is two to three times the water depth. 

The harder (more rocky) the bottom, the easier it will be to get a second 

bottom signal.) Don't touch the controls once they've been set. 

 

2. Next, take the transducer out of the water and place it in the water in 

the sump of the boat, face down. (The transducer face is shown in the 

figure on the following page.) Notice how the signal strength decreases. 

The second bottom signal will probably disappear and the bottom sig-

nal intensity will likely decrease. 

3. Now move the transducer around to find the best location with the 

strongest possible bottom signal. If you find a spot with an acceptable 

bottom signal, mark the location and move on to step 4. 
If you can't get an acceptable bottom signal, try turning up the sensitiv-

ity by three or five keystrokes and then move the transducer around 

once more. If you find a spot that works, mark it and move on to step 4. 
If you have to turn up sensitivity by more than five keystrokes to get a 

good signal, the transducer should be mounted on the outside of the 

hull. This is especially true if you have to turn sensitivity all the way 

up to get a decent bottom signal. 

4. Most people can get good results by following steps 1 through 3, so this 

step is optional. If you want to make an extra effort to be absolutely