Spectra Precision Survey Pro v4.6 Ranger User Manual - Manual (Page 240)

User’s Manual – GPS Mode
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6. If there is a default geoid attached to the zone or site, Use
Geoid
is checked and the geoid model is selected in the drop
down list. You can choose to use this geoid, or you can change
the geoid model used by this zone or site.
7. Tap Finish to set the selected zone or site and the selected
geoid (if Use Geoid is checked) as the current coordinate
system.
Note: If you change the geoid model used by a site record, and if that
site record has a vertical adjustment solved, then you will be
prompted that the vertical adjustment parameters will be cleared.
• Use the Delete Zone / Site button to delete zones or sites from
the database. You can only delete user created sites, you
cannot delete the original 'system' records in the database.
• Use the Key In Zone button to open the Key In Zone screen
where you can configure a custom map projection and datum.
Key In Zone
Use the Key In Zone screen to create a custom map projection and a
custom datum transformation to add to the coordinate system
database file. You can then select this zone as the coordinate system
to use in your job.
1. Pick the Zone Type for the new map projection zone. Supported
zone types are:
• Transverse
Mercator
• Lambert 1 parallel
• Lambert 2 parallel
• Stereographic (oblique and polar)
• Oblique Mercator Angle
2. Pick the Datum Type for the new map projection zone. Choices for
datum are: