Download Garmin 168 GPS Receiver User Manual

The following options are available:
• Start/Stop Simulator— allows you put the unit in simulator mode. See the Getting Started Tour for
more on using simulator mode.
• Enable/Disable WAAS— allows you to activate or deactivate WAAS. ‘WAAS’ is an acronym for
“Wide Area Augmentation System’. You can use the WAAS capability to increase the accuracy of
the GPSMAP 168 Sounder. When enabled, the GPS receiver searches for a WAAS satellite, then
receives data that will help correct differentials in the GPS signal. When the unit is using WAAS data,
“WAAS” will be displayed in the ‘DGPS Rcvr’ field on the Status Page, and the receiver status will
indicate a 2D or 3D Differential Location.
Reference
Status Page Options
Currently, the WAAS system is not fully operational and there are only two satellites in place—one
over the Pacific Ocean and one over the Atlantic Ocean. You must have a clear, unobstructed view
of the sky for the GPSMAP 168 Sounder to be able to receive a WAAS signal. Even then, at times it
may not be possible to receive a WAAS signal. For more information on the WAAS system, visit the
Federal Aviation Administration web site at (gps.faa.gov).
• Track Up/North Up— allows you to select between a north up or track up sky view display for
the Status Page only.
• Loran TD On/Off— allows you to toggle the position coordinate format between latitude/longitude
and Loran TD (Time Delays). For setup of Loran TD, see pages 83-84.
• AutoLocate— allows the receiver to locate your position automatically. This process can take up
to five minutes.
• Initialize Position— allows you to initialize the receiver graphically on the Map Page to initially help
the receiver acquire more quickly. See pages 4-5 for instructions on initialization.
Status Page Options
• Set 2D Elevation— allows you to manually enter the altitude when in 2D Navigation or Simulator
mode only. Any altitude entered will be automatically calculated when the GPS is in 3D Navigation
mode.
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