NorthStar 941X Reference Manual page 42

choosing L/L or
TDs
Phantom Loran
checking GPS
status
checking DGPS
status
DGPS
corrections
returning to GPS
navigation
Page 34
Press the L/L TDS menu key several times to select the particular pair of
TDs you wish to use or to display GPS latitude/longitude.
Press the SET GRI menu key to change the GRI to be used in calculating
GRI
the displayed TDs. Press the up and down cursor keys to display the
available GRIs one at a time. When the GRI is correct, press ENTER.
Press the SAT INFO menu key to check on the received GPS satellite
status, as described on page 27.
Press the DGPS INFO menu button to display the current status of the
beacon receiver, including SNR, SIGNAL and NOISE values (as previ-
ously described on page 29). Press RETURN when you wish to go back to
the PHANTOM LORAN position screen.
The large
the display indicates differential GPS corrections are being received and
used to improve the accuracy of the received data.
To return to GPS signals for navigation, repeat the steps shown above for
selecting loran, except specify GPS instead of Phantom Loran.
See "Navigating to Waypoints," beginning on page 55, to learn how to
navigate to loran, Phantom loran, or GPS coordinates.
3 — Basic Navigation 3 — Basic Navigation 3 — Basic Navigation 3 — Basic Navigation
letter displayed in the upper right corner of
Rev. D