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Reference
Main Menu:
Comm Tab
Comm Tab Transfer Modes
To select a transfer mode:
1. Use the ARROW KEYPAD to select ‘Garmin Data Transfer’ in the ‘Serial Data Format’ fi eld.
2. Highlight the ‘Transfer Mode’ fi eld and press ENTER/MARK.
3. Use the ARROW KEYPAD to select the desired setting and press ENTER/MARK.
To restore the Serial Data Format settings back to the default ‘Garmin Data Transfer’:
1. From the ‘Comm’ tab, press MENU, highlight ‘Restore Defaults’ and press ENTER/MARK.
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 168 Sounder. 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 will 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, highlight ‘Restart Scan’ and press ENTER/MARK.
The unit can automatically scan for
a DGPS signal.
168 Manual Part 2.indd 01/09/01, 9:43 AM73