Phoenix Stonex S900 - Page 46

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6. Click “Save”
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7. Next transfer GRD file to your data collector by connecting the device to your PC via USB cable, and copying the                    
geoid file to the data collector.
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8. In SurvCE, you load the Geoid from the “Equip” tab and then going to “6 Localization” and clicking on the “GPS” tab.
Click the “Geoid File” button, then browse to find the new GRD file
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9. You can verify that a Geoid file is loaded and in-use by going to the “Equip” tab and then going to “7 Monitor skyplot”                       
and clicking on the “Position” tab where you will see the ellipsoid height, and the Geoid separation listed.
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For most of the planet the Geoid separation is negative. It is subtracted from the Ellipsoid elevation and causes the                   
Local (Orthometric) elevation to be greater than the ellipsoid elevation.
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If the Geoid file does not cover your survey area, or is not loaded you will see a screen showing the Geoid as “None”                       
and the “Ellipsoid Elev” is exactly the same as “Local Elev”
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