December 6, 2011 08:28
Before assuming the charts were "OFF" did you verify that the GPS position: LAT/LON was identical on both the GPS interfaced to the Mac/MacENC and then the iPad 3G/iNavX GPS?
You can also check the chart versions in both MacENC and iNavX to see if they were the same. To do so in MacENC the versions are listed in the Chart Manager, and in iNavX selecting the "i"nfo button in the lower right hand corner will display the version.
Another thing to check is the GPS accuracy. In MacENC, the horizontal position error (HPE) is displayed in the GPS panel Satellites drawer, and in iNavX the HPE is in the Instruments view or banner. Typically I see under 20' for both Mac and iPad 3G. The iPad 3G GPS does not need an internet connection to function accurately.
If you can provide a lat/lon I can verify the Navionics charts for both iNavX and MacENC are in agreement both geographically and version number.
You can also check the chart versions in both MacENC and iNavX to see if they were the same. To do so in MacENC the versions are listed in the Chart Manager, and in iNavX selecting the "i"nfo button in the lower right hand corner will display the version.
Another thing to check is the GPS accuracy. In MacENC, the horizontal position error (HPE) is displayed in the GPS panel Satellites drawer, and in iNavX the HPE is in the Instruments view or banner. Typically I see under 20' for both Mac and iPad 3G. The iPad 3G GPS does not need an internet connection to function accurately.
If you can provide a lat/lon I can verify the Navionics charts for both iNavX and MacENC are in agreement both geographically and version number.
Scott Dillon
Sydney Australia
North Shore 38
CYCA
Sydney Australia
North Shore 38
CYCA