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Reference
Main Menu:
Comm and Alarm Tabs
The DGPS beacon transmitters are operated by the U.S. Coast Guard (or similar government agency
in other countries), which is responsible for their accuracy and maintenance. For DGPS transmitter
problems or to fi nd the most updated list of frequencies and coverage areas, contact your local USCG,
or see their web site at http://www.navcen.uscg.mil/.
Alarm Tab— allows you to defi ne the alarm setting for Anchor Drag, Arrival, Off Course, Clock,
Shallow /Deep Water, Battery and DGPS/Accuracy.
• 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.
• Clock— provides an alarm for the system clock. Enter a time in the time fi eld and turn the alarm on
and off from the control fi eld menu. Remember to enter alarm times in the same time format (UTC
or local) you’re using for your system. The unit must be on for the clock alarm to work.
• 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. Enter a depth in the distance fi elds and use the control fi elds to turn
the alarms on and off.
You must be receiving sonar NMEA data (pg. 81) for this function to work.
• Battery— sets an alarm to sound when the battery is reaching a critical state of discharge.
• DGPS and Accuracy— DGPS alarm will sound when the unit loses a differential fi x. The accuracy
alarm will sound when the GPS position accuracy falls outside the user-set value.
To set an alarm:
1. Use the ARROW KEYPAD to highlight the fi eld to the right of the alarm name you wish activate
and press ENTER/MARK.
2. Change the mode to ‘On’ (Dist or Time for the ‘Arrival’ alarm) and press ENTER/MARK.
3. Highlight the next fi eld to the right and press ENTER/MARK, then enter the desired settings and
press ENTER/MARK to fi nish.
Alarm Tab
Press ENTER/MARK to
acknowledge an alarm.
182_232 Manual Part 2.indd 12/21/01, 11:41 AM67