Trimble 4D ControlTM Software, version 4.6.1
This software update for Trimble® 4D Control™ contains all changes since the release of version 4.6.0. The following document gives you an overview of the changes.

•	Turn to a target using the site setup dialog 

Instead of using the horizontal angle reading from the reference measurement Trimble 4D Control has been revised to turn the instrument to the horizontal circle reading of the last round measurement when turning to a specific target. This improvement ensures that a target is always found in all likelihood even if for example the horizontal angle orientation of the total station changes over time. 

In addition the turn to target functionality is now dealing correctly with new targets that are added to the point list based on known coordinates but for which there is no reference measurement available yet. 

•	Lock on close targets

Trimble 4D Control is more robust now when a target with a relatively short distance to the instrument is supposed to be locked. The time window for receiving the expected target lock status from the instrument has been expanded for such targets. 

•	Export of system configuration

In terms of moving an existing system configuration from one server to another Trimble 4D Control offers a tool to exporting and importing all or only selected configurations. After applying this software update it is guaranteed that the configurations of Data Collector modules are also contained by an exported configuration file.