Spectra Precision Survey Pro v4.6 Ranger User Manual - Manual (Page 157)

Other Conventional Surveying Tutorials
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GeoLock
GeoLock is a feature that uses a GPS receiver to calculate your
position so while working robotically, if the total station loses lock of
the prism, it can quickly turn to the location of the prism based on the
GPS position and then automatically perform a search to lock back
onto the prism.
GeoLock is available when using a Trimble or Geodimeter robotic
total station, along with a GPS receiver that outputs a NMEA signal.
Most inexpensive consumer handheld GPS receivers will output the
required signal.
Communication between the data collector and GPS receiver takes
place using a compatible data cable.
All of the GeoLock features and settings are
accessed while in the Remote Control or
Remote Shot screens. Specifically, you will use
the GeoLock button and the satellite icon in
the Command Bar, which changes color to
indicate different situations related to
GeoLock, as described below.
If you tap on the satellite icon , a list will
open to access other GeoLock-related screens.
At the bottom of this list is a message
indicating the current GPS status, which
coincides with the color of the satellite icon as follows:
(gray icon) Off: GeoLock is not enabled.
(yellow icon) On - Collecting Data: GeoLock is active but a
localization solution does not yet exist.
(red icon) No GPS Data or GeoLock requires Backsight set: No
NMEA data is available or the backsight has not yet been set.
(green icon) On - Ready: GeoLock is active and a localization
solution exists.