Garmin GPS 120 - Manual (Page 62)

The GPS 120 uses a flashing on-scteen message to alert you to important information. Whenever
the message indicator appears, press the key to view the message page. There are two types of
messages: temporary alerts and condition alerts. Temporary alerts are cleared from the message
page after viewing, while condition alerts remain on the message page until the condition has been
resolved. Pay careful attention to all messages for your own safety.
Accuraqr lias teen [kgraded —The accuracy of the GPS 120 has been degraded beyond 500
meters due to poor satellite geometry or data quality. You should check other navigation
al sources to verify the position indicated.
Already Exists —^The waypoint name you are entering already exists in the GPS 120’s memory.
Anchor Drag Alarm —The vessel has moved outside of the anchor drag range. You should verify
the position change and reset die anchor, if necessary. Remember that the GPS position calcu­
lated by the GPS 120 can vary significantly due to coverage variations and Selective Availability.
Approaching— You are less than one minute away from reaching a destination waypoint.
Arrival at WPT— You have entered the arrival alarm range for the destination waypoint.
Can’t change Active WPT —You have attempted to change the ‘active to’ or 'active from’ waypoint.
Clear the active route or GOTO before making your changes,
CDl Alarm —Your crosstrack error has exceeded the alarm minimum.
No DGPS Position —Not enough data is being received to compute a DGPS position.
No RTCM Input —Beacon receiver is not properly connected or baud rates do not match.
Poor GPS Coverage —The GPS 120 cannot acquire the necessary number of satellites to
compute a position.
Power Down and Re-init —The GPS 120 is not able to calculate a position due to abnormal satellite
conditions. Turn the unit off and verify the last position shown by other means.
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