Garmin GPSMAP 198C Sounder User Manual
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GPSMAP 198C Sounder Owner’s Manual
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PPENDIX
>
L
ORAN
TD S
YSTEM
The LORAN Position Format field is located under the Setup–
Location tab in the Main Menu. The LORAN TD Setup window
contains the fields to select the Loran GRI-Chain Number, Primary
and Secondary Stations, and TD Offsets.
To set up Loran TD from the Main Menu:
1. Press
MENU twice to show the Main Menu.
2. Using the
ROCKER, highlight the Position Format field on
the
Units tab, and press ENTER.
3. Highlight
Loran TD, and press ENTER
.
4. Highlight
Setup, and press ENTER.
5. To change the settings of any of the five fields, highlight the
field, press
ENTER, select or enter a setting, then press
ENTER.
6. When finished, highlight
Save, and press ENTER.
Loran TD Setup Page
If the active GRI Chain, secondary stations, or offsets have been
changed since the waypoint was created, the waypoint now
references the active GRI-chain and secondary stations. You must
adjust the TD coordinates accordingly. Remember that the GPS
is not relying on the LORAN signal for navigation and actually
converts the TD coordinate to a useful LAT/LON coordinate before
storing the waypoint to memory or using it for navigation. Because
of this, the unit can navigate to a TD coordinate anywhere in the
world.
You must know your GRI chain number and secondary stations
to create a LORAN TD position. For more information, read our
LORAN TD Position Format Handbook, available at the Garmin
Web site (www.garmin.com/support/userManual.jsp.)