I will preface this by saying I am new to this field. I am using a Trimble geo7x with a zephyr 3 to collect elevation points, but my data are not what I expected to see: some are negative and do not come close when I compare uncorrected or corrected data to DEM data in gis.
I used com3 for my port setting in the field, and I’m thinking this is my error. I’m set for msl, geoid 12a, and I have the appropriate antenna height.
My question is: is there any way to correct this in office? Running a differential correction in pathfinder does not get me where I need to be.