Lowrance electronic PRO X51 Benutzerhandbuch

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To turn off the fish alarm without turning off fish symbols, press 

 until 

 appears. Press 

 to select 

, then 

press 

 to clear the menu. Repeat the above steps to turn the alarm 

back on, but press 

 to select 

 before clearing the menu. 

Depth Alarms 
The depth alarms are triggered only by the bottom signal. No other 
echoes will activate these alarms. The depth alarms consist of a shallow 

and a deep alarm. The shallow alarm sounds an alarm tone when the 
bottom goes shallower than the alarm's setting. The deep alarm sounds 

a tone when the bottom goes deeper than its setting. Both alarms adjust 

the same way, although through different menus. 
Shallow Alarm 

To set the shallow alarm depth, press 

 

repeatedly until 

 appears. 

Press 

 to increase the shallow alarm's depth 

setting or press 

 to decrease it. The number in 

the shallow alarm’s menu box shows the current shallow 

alarm setting. When the number reaches the desired setting, press 

 

to clear the menu. When the bottom depth goes shallower than the 
alarm’s setting, an alarm tone sounds and a message box appears on 

the screen. 
Press 

 to silence the alarm. This turns the alarm sound off until 

the shallow alarm is triggered again. 
To turn the alarm off, press 

 repeatedly until 

 appears. Press 

 until the words 

 appear, 

then press 

 to clear the menu. 

To set the deep alarm depth, press 

 repeatedly 

until 

 appears. 

Press 

 to increase the deep alarm's depth setting 

or press 

 to decrease it. The number in the 

deep alarm’s menu box shows the current deep alarm 

setting. When the number reaches the desired setting, press 

 to 

clear the menu. When the bottom depth goes deeper than the alarm’s 
setting, an alarm tone sounds and a message box appears on the 

screen. Press 

 to silence the alarm. This turns the alarm sound off 

until the deep alarm is triggered again. 
To turn the alarm off, press 

 repeatedly until 

 

appears. Press 

 until the words 

 appear, then 

press 

 to clear the menu.