Data Collector file formats
Here are the files provided by Trimble that document the data file format created by the download software from job files in the TSC1 data collector. The formats have changed with different versions of the TSC1 software. The current U of Utah TSC1 uses v7.5 files.
This documentation is from Trimble's website ( http://www.trimble.com/support/files/tsc1previous.htm) and is listed as being posted on 7 Feb 2000.