Lowrance lms-330c 操作ガイド

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Sonar Alarms menu with Fish Alarm selected. The check box to the left

is blank, indicating the alarm is turned off.

1. Press 

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↓ to 

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↓ to 

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2. Press 

↓ to 

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.

3. To turn off the alarm, press 

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↓ to 

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↓ to

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↓ to  

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Calibrate Speed

The speed sensor can be calibrated to compensate for inaccuracies. Be-
fore you change the setting, first calculate the percentage that the
speed is off. You will enter this percentage in a moment.

For example, if you figure the sensor is reading 10 percent faster than
actual speed, you will enter – 10 in the calibration window. If the sen-
sor is reading 5 percent slower than true speed, you will enter + 5 in
the window.

A good way to gauge your speed sensor's performance is to compare its
reading with the ground speed measured by your unit's GPS functions.
When you make a run to compare GPS ground speed to speed sensor
speed, perform your test in relatively calm water free of current, if pos-
sible. (Unless, of course, you are taking the current speed into consid-
eration when making your calculation.) After you have a correction fig-
ure, here's how to enter it:

1. Press 

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↓ to 

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↓ to 

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.

2. Enter the number you calculated earlier: press 

↑ or ↓ to change the

first character (+ or –), then press 

→ to move the cursor to the next

number and repeat until the percentage is correct, then press 

.