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Alarms Setup Submenu
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REFERENCE
Main Menu—
Alarms Setup
Submenu
Angular Heading Selection
The GPS 12CX gives you the ability to change your
angular display. Choose this field to toggle between de-
grees and MILS.
To change between degrees and MILS:
1. Highlight the angle heading field and press
ENTER
2. Select the desired setting and press
ENTER
.
Alarms Setup
The alarms setup submenu page is used to set two
alarms on the GPS 12CX: arrival and CDI. The arrival
alarm will alert you when you are approaching a way-
point. The arrival alarm has three available settings:
• ’Off’— No alarm will occur.
• ’On’— The alarm will occur at the user-specified dis-
tance from the destination waypoint.
• ’Auto’— The alarm will occur at one minute away
(based upon current speed, distance & track) from
the each waypoint in the active route or from the
GOTO destination.
To set the arrival alarm:
1. Highlight the ‘ARRIVAL’ field and press
ENTER
.
2. Select ‘On’, ‘Auto’ or ‘Off’, and press
ENTER
.
3. If ‘On’ is selected, highlight the distance field, press
ENTER
, enter the desired distance and press
ENTER
.
The CDI alarm will alert you if your position deviates
off course (left or right) beyond the limits specified.
To set the CDI alarm:
1. Highlight the ‘CDI Alarm’ field and press
ENTER
.
2. Select ‘On’ or ‘Off’, and press
ENTER
.
3. If ‘On’ is selected, highlight the distance field, press
ENTER
, enter the desired distance and press
ENTER
.
Note: The arrival and CDI alarms both have setting
ranges from 0.0 to 9.9 units (statute miles/nautical miles/
kilometers). Setting the CDI alarm to its lowest limits
may cause false alarms due to the effects of DOD-im-
posed Selective Availability. Selective Availability can
degrade your GPS position by as 100 meters.
Angular Heading Settings