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Select ‘Disabled’ to turn the WAAS feature Off. You should turn
this feature off when WAAS reception is poor or the signals are
blocked, to improve system performance.
WAAS satellite signal reception requires an absolute clear view of the sky and works best when there
are no nearby obstructions such as buildings, mountains, etc. WAAS satellites will be numbered 33 or
higher when viewing the sky view on your GPSMAP 196. Initial reception of the WAAS signal may take
up to 15-20 minutes each day, then 1-2 minutes afterwards. When WAAS differential corrections are
being received for GPS satellites (numbers 32 or below), a ‘D’ will appear in the signal bar for any appli-
cable satellite and ‘2D Differential’ or ‘3D Differential’ will appear in the receiver status. To learn more
about the WAAS system, the location of WAAS satellites and current state of development, visit the
FAA web site: http://gps.faa.gov. WAAS calculations require considerable processor time. If not needed
(or not available in your current location), you may wish to disable the WAAS feature to improve unit
performance. The unit will not search for WAAS satellites if the unit is in the Battery Saver mode.
To enable/disable the WAAS feature:
1. From the ‘GPS’ tab, highlight the WAAS fi eld and press ENTER
2. Select either ‘Enabled’ or ‘Disabled’ and press ENTER.
190-00283-00Backup.indd 60 12/8/2002, 8:09:24 PM