Garmin GNC 420W Pilots Guide - Page 57

SECTION 3 NAV PAGES 3.8 Satellite Status Page The Satellite Status Page provides a visual reference of GPS receiver functions, including current satellite coverage, GPS receiver status, and position accuracy. The Satellite Status Page (Figure 3-47) is helpful in troubleshooting weak (or missing) signal levels due to poor satellite coverage or installation problems. 1 2 3 4 5 6 78 9 10 Figure 3-47 Satellite Status Page 1 Sky View 2 Estimated Position Error (EPE) and Dilution of Precision (DOP) 3 GPS Receiver Status 4 Horizontal Uncertainty Level (HUL) 5 Satellite ID Numbers 6 Signal Strength Bars 7 Excluded Satellite 8 Current Page Group 9 Number of Pages in Current Page Group 10 Position of Current Page within Current Page Group As the GPS receiver locks onto satellites, a signal strength bar appears for each satellite in view, with the appropriate satellite number (01-32) underneath each bar. The status of satellite reception is shown as follows: • No signal strength bars - The receiver is looking for the satellites indicated. • Hollow signal strength bars - The receiver has found the satellite(s) and is collecting data (Figure 3-48). • Solid signal strength bars - The receiver has collected the necessary data and the satellite(s) is ready for use. • Checkered signal strength bars - Excluded satellites (Figure 3-47). The sky view display (at top left corner of the page) shows which satellites are currently in view and where they are. The outer circle of the sky view represents the horizon (with north at top of the page), the inner circle 45° above the horizon, and the center point directly overhead. Figure 3-48 Hollow Signal Strength Bars 190-00140-20 Rev. K GNC 420(A) Pilot's Guide and Reference 3-23