Garmin GPSMAP 238 Sounder - Manual (Page 101)

91
Reference
Main Menu: Alarm Tab
Battery – sets an alarm to sound when the battery is reaching a critical state of discharge.
DGPS – sets an alarm to sound when the unit loses a differential fi x.
Accuracy – sets an alarm to sound when the GPS position accuracy falls outside the user-set value.
Nav Tab
Anchor Drag – sets an alarm to sound when you’ve exceeded a specifi ed drift distance. Enter a value
in the distance fi eld and use the control fi eld to turn the alarm on and off.
Arrival – sets an alarm to sound when you’re a specifi ed distance or time away from a destination
waypoint. Enter a distance radius or time for sounding the alarm and use the control fi eld to set the
alarm to ‘Off’, ‘Dist’ (Distance), or ‘Time’.
Off Course – sets an alarm to sound when you’re off a desired course by a specifi ed distance. Enter a
distance in the distance fi eld and use the control fi eld to turn the off course alarm on and off.
Sonar Tab
Shallow Water/Deep Water – set alarms to sound when you enter an area of specifi ed depth that is
too shallow and/or too deep. You must be receiving sonar data for this function to work.
Water Temperature – sets an alarm to sound when the transducer reports a temperature either
above, below, inside or outside the specifi ed values.
Fish – sets an alarm to sound when the unit detects a fi sh of the specifi ed size symbol(s).
To set an alarm:
1. Use the ARROW KEYPAD to highlight desired submenu tab of the Alarm Tab.
2. Highlight the fi eld below the alarm name you wish activate and press ENTER.
3. Change the mode to the desired setting and press ENTER.
4. Highlight the next fi eld to the right and press ENTER, then enter the desired settings and press
ENTER to fi nish.
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.
Main Menu—Alarm Tab
(Nav Submenu)
Main Menu—Alarm Tab
(Sonar Submenu)
188188C238 Manual Part 2.indd 91 6/30/2003, 3:32:35 PM