Garmin GNS 530 Pilot's Manual & Reference

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Garmin GNS 530 Pilot's Manual & Reference Manual pdf 18 page image

GNS 530(A) Pilot’s Guide and Reference 190-00181-00 Rev. H1-8SECTION 1INTRODUCTIONSatellite Status PageThe Satellite Status Page (Figure 1-10) appears as theGNS 530 attempts to collect satellite information.When an ‘Acquiring’ status is displayed on the SatelliteStatus Page, the signal strengths of any satellites receivedappear as ‘bar graph’ readings. This is a good indicationthat the unit is receiving signals and a position fix is beingdetermined. Following the first-time use of the GNS 530,the time required for a position fix varies, usually fromone to two minutes.Figure 1-10 Satellite Status PageIf the unit can only obtain enough satellites for 2Dnavigation (no altitude), the unit uses the altitude providedby the altitude encoder (if one is connected).The ‘INTEG’ annunciator (bottom left corner of thescreen) indicates that satellite coverage is insufficient topass built-in integrity monitoring tests. In the exampleabove, not enough satellites are being received to determinea position. The Satellite Status Page shows the ID numbersfor the satellites and the relative signal strength of eachsatellite received (as a bar graph reading).‘Searching Sky’ indicates that satellite almanac datais not available or has expired (if the unit hasn’t beenused for six months or more). This means the unit isacquiring satellite data to establish almanac and satelliteorbit information, which can take five to ten minutes.The data is recollected from the first available satellite.The Satellite Status Page displays a ‘Search Sky’ status, andthe message annunciator (MSG), above the MSG Key alsoflashes to alert the pilot of system message, ‘Searching theSky’.Viewing a system message:Press the MSG Key (Figure 1-11).The Message Page appears and displays the status orwarning information applicable to the receiver’s currentoperating condition.Figure 1-11 Message PageReturning to the previous page afterviewing a message:Press the MSG Key again.NOTE: The GNS 530 utilizes certain softwarealgorithms to ensure reliable GPS receiveroperation. Receiver Autonomous IntegrityMonitoring (RAIM) and Fault Detection andExclusion (FDE) are two examples. These featuresallow navigation during Oceanic/Remote legs ofa flight using the GNS 530. For further details,please refer to Sections 10.3, 10.4, and 14.