The links below are for EGM08. NOTE: They have been separated into two files - egm08n (North) and egm08s (South).
Please choose the correct file for your location.
These file can only be used in SurvCE 5.02 and higher.
Right-click the link below and choose "Save Link As" to download the file and copy it into your data collector under one
of the paths listed below.
How to Load the Geoid in SurvCE/PC
1. Go to the Equip tab, in SurvCE, and select the Localization button.
2. Select the GPS tab. Then, tap the "GEIODS" button to browse for, and select, your geoid. NOTE: for the GRD file, you
will need to change the Type in the top-left to GRD.
Remember: these files can be found in the following directory of your data collection software:
For SurvCE: /Program Files/SurvCE/Data/Geoids
For SurvPC: C:/Carlson Projects/Data/Geoids
3. Tap the Green Check and wait about 30 seconds for the file to load.
4. When you are returned to the GPS tab; tap the Green Checkmark to save your settings.
If you need smaller files for older data collectors, follow the steps here.