Spectra Precision FAST Survey Reference Manual - Manual (Page 128)

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(or in Resection). The radio tower points will be used only for their north and east coordinates.
The Advanced Occupation command can even be run from a file containing no coordinates, assuming backsight points
can be referenced from a control file. Begin by selecting the command Store Points in the Surv Menu, establish point 1
as the occupied point, 2 as the backsight and enter the correct target heights (0 for the radiotower point 2). Then click to
"Occupation". The first screen appears below:
If the occupied point is not known, as in this case, then N, E, Z values appear as None. If the point is known, then the
N, E, Z values appear with their coordinates, and you must decide wether to "Use Known E/N" and "Use Known Elev"
before proceeding. The next step is to click the Observations button. Note that if a previous list of targets was created,
you will be prompted to re-use the target list. In any case, you proceed to the following screen: