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Main Menu
If ‘ GARMIN DGPS’ or ‘ RTCM In/NMEA Out’ format is selected, additional fi elds are provided to
control a Garmin differential beacon receiver directly from your GPSMAP 276C. You may have the unit
automatically scan for the DGPS beacon signal or you can enter the beacon frequency and bit rate on the
unit and the information will be used to tune the beacon receiver.
To have the unit automatically scan for a frequency:
1. With the unit set to ‘GARMIN DGPS’ or ‘RTCM In/NMEA Out’, use the ARROW KEYPAD to highlight
the ‘Beacon’ fi eld and press ENTER/MARK.
2. Highlight ‘Scan’ and press
ENTER/MARK. The numbers in the ‘Frequency’ fi eld change as the unit
scans from ‘284 kHz’ to ‘325 kHz’, ‘200’ bit rate, then ‘100’, at 6-second intervals.
To restart the scan:
1. Press MENU.
2. Highlight ‘Restart Scan’ and press
ENTER/MARK.
To manually enter a frequency and bit rate:
1. With the unit set to ‘GARMIN DGPS’ or ‘RTCM In/NMEA Out’, use the ARROW KEYPAD to highlight
the “Beacon” fi eld and press ENTER/MARK.
2. Highlight ‘User’ and press
ENTER/MARK.
3. Highlight the ‘Frequency’ or ‘Bit Rate’ fi eld, press
ENTER/MARK, then enter a frequency or bit rate
and press ENTER/MARK when done.
Setup Tab
‘COM 1’ tab of the Setup Tab
‘COM 2’ tab of the Setup Tab with GARMIN DGPS selected
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