Hi I installed Arcpad 10 and gps analyst in a gps model Geotx of Trimble. When I go to the field the elevation (z) is not right, is giving a negative number. Before when I used Arcpad 6 the elevation was between 2 or 3 meters, that elevation was in a good range. My question is: do I have to change any configuration in arcpad or in the gps? Arcpad 10 uses other configuration that is not ellipsoidal? We are using the 2003 geoid because the 2009 is not available in Puerto Rico yet.