Lowrance electronic 500 - Manual (Page 74)

68
2. Scroll
↓ or ↑ to select the desired category, then press
ENT .
3. Press
↑ or ↓ to change the first character, then press → to the next
character and repeat until the distance is correct.
4. To return to the last page displayed, press EXIT | EXIT .
IMPORTANT ALARM NOTES:
Anchor Alarm – The anchor alarm may be triggered even when
you're sitting still. This typically happens when using small (less
than 0.05 mile) anchor alarm ranges.
Arrival Alarm - If you set the arrival alarm's distance to a small
number and you run a route (see the Navigate Routes segment),
this unit may not show navigation data to the next waypoint, once
you arrive at the first one, since you may not be able to come close
enough to the first waypoint to trip the arrival alarm.
Aviation Alarms
This unit has three airspace alarms that are triggered by any airspace
that it’s capable of showing. The alarms are three-dimensional in nature;
that is, they are triggered by both horizontal distance and altitude.
The Time Alarm is a "look-ahead" alarm that (based on your current
speed and track) sounds an alarm 10 minutes before you reach an air-
space. The Near Alarm sounds when you are within one nautical mile
of an airspace. Finally, the Inside Alarm sounds to let you know you
have entered an airspace.
All of these alarms can be turned on or off using the Aviation Alarms
menu. The limits that trigger them are adjustable from this menu as well.
Aviation Alarms menu, left; a Time Alarm showing arrival at
DFW International Airport in 10 minutes, right.