New Transducers 250C ユーザーズマニュアル

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26 
Fishfinder 250/250C Owner’s Manual
Sonar alarms:
• 
Fish—sets an alarm/icon to sound/display when the unit 
detects a fish of the specified symbol size.
• 
Shallow Water/Deep Water—sets alarms to sound for when 
you enter areas of specified depth that are too shallow or too 
deep.
• 
Drift—sets an alarm to sound when you’ve exceeded a 
specified drift depth range. For example, if the value is set to 
5 ft. and the current depth is 20 ft., the alarm will sound if the 
unit detects a depth greater than 25 ft. or shallower than 15 ft.
• 
Water Temperature—sets an alarm to sound when the 
transducer reports a temperature above, below, inside, or 
outside the specified values.
System alarms:
• 
Battery—sets an alarm to sound when the battery nears a 
critical state of discharge.
• 
Timer—allows you to set, stop, or reset a timer. With the 
Count Dn (Down) and Count Up settings you may specify 
the duration of the timer count.
To set an alarm:
1.  Use the 
ARROW keys to highlight the desired subtab of the 
Alarms tab.
2.  Highlight the field below the alarm name you wish to activate 
and press 
ENTER.
3.  Change the mode to the desired setting and press 
ENTER.
4.  Highlight the next field to the right and press 
ENTER, then 
enter the desired settings and press 
ENTER to finish.
5.  If you want the alarm to display and beep until 
acknowledged, highlight the 
Persist box and press ENTER 
to place a check mark in the box.