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GPSMAP 176/176C Owner’s Manual 53
MAIN MENU > GPS TAB
NOTE: If a DGPS receiver is attached to the unit and Garmin
DGPS, RTCM In/NMEA Out, or Other DGPS is enabled on
Port 2, WAAS is automatically disabled (WAAS Off). It is not
possible for the GPSMAP 176/176C to receive WAAS and DGPS
corrections at the same time.
The Differential SNR (Signal to Noise Ratio) indicates, on a range
to 0–30db with 30 db being the best, the strength of the DGPS
signal being received. If no optional DGPS receiver is used with the
GPSMAP 176/176C, the DGPS Rcvr field displays Off. The SNR
depends upon the mounting of your DGPS receiver and the distance
from the DGPS transmitting station.
GPS Info tab features an options page that provides access to
functions and features relating to the GPS Info tab. To display the
GPS tab options with the GPS information displayed, press MENU.
GPS Tab (Main Menu) Options
The following options are available:
• Start/Stop Simulator—toggles the unit simulator on or off.
• Track Up/North Up—allows you to select between a north up
or track up sky view display for the GPS Info tab only.
• New Location—allows you to initialize the receiver
graphically on the Map page to help the receiver acquire more
quickly.
• New Elevation—allows you to manually enter the altitude
when in 2D or Simulator mode only. Any altitude entered is
automatically calculated when the GPS is in 3D mode.