User manual TRIMBLE TERRASYNC 2.60 GETTING STARTED GUIDE

[. . . ] GETTING STARTED GUIDE TerraSyncTM software GETTING STARTED GUIDE TerraSyncTM software Version 2. 60 Revision A Part Number 43164-26-ENG August 2006 Trimble Navigation Limited 10355 Westmoor Drive Suite #100 Westminster, CO 80021 USA www. trimble. com Legal Notices Copyright and Trademarks ©2000--2006, Trimble Navigation Limited. For STL support, the TerraSync software uses the Moscow Center for SPARC Technology adaptation of the SGI Standard Template Library. ©1994 Hewlett-Packard Company, ©1996, 97 Silicon Graphics Computer Systems, Inc. , ©1997 Moscow Center for SPARC Technology. Portions of this computer program are copyright © 1995-1999 LizardTech, Inc. [. . . ] 9. For more information, refer to the GPS Pathfinder Office Help. 52 TerraSync Software Getting Started Guide Tutorial: Collecting Data 3 Data update Note ­ You cannot update imported data files using the TerraSync Standard edition software. This part of the tutorial uses the data file that you have just transferred to the field computer. This section gives the step-by-step instructions required to navigate back to features, and to update features. See: · · Using real-time differential GPS (see below) Updating data, page 55 Using real-time differential GPS You can use real-time differential GPS to navigate accurately to existing features. Use the Navigation section or the Map section to navigate back to a selected feature. See: · · · Sources of real-time differential corrections, page 53 Logging postprocessable positions, page 54 Checking the real-time status, page 55 Sources of real-time differential corrections You can get real-time corrections from any of the following sources: · · · · · Integrated beacon receiver Integrated satellite receiver Integrated SBAS receiver Integrated RTK radio External source, such as VRS, data radio, or external beacon receiver TerraSync Software Getting Started Guide 53 3 Tutorial: Collecting Data You can specify up to four choices for real-time corrections. If your first choice is not available, the TerraSync software automatically uses the second choice until the first choice is available again. This occurs at all levels, so the TerraSync software uses your preferred correction source at all times. If you cannot use real-time corrections, or do not want to use them, set the first choice to Use Uncorrected GPS. Use the Setup section to configure the real-time correction sources you want to use. Logging postprocessable positions When you use a real-time differential correction source, there may be times when you cannot receive corrections. Any positions logged during these times are uncorrected, and are subject to errors which degrade their accuracy. However, the TerraSync software always logs SuperCorrectTM data, except where logging carrier data (such as H-Star data) makes SuperCorrect logging unnecessary. Logging SuperCorrect data means that you can receive real-time corrections, but you can also postprocess your data in the GPS Pathfinder Office software to improve the accuracy of the real-time corrected positions. Note ­ You cannot postprocess RTK data collected using a survey receiver. 54 TerraSync Software Getting Started Guide Tutorial: Collecting Data 3 Checking the real-time status Always check the real-time status before navigating back to existing features. Real-time icon B Tip ­ Use the status bar to quickly check the real-time status. When the TerraSync software is receiving real-time corrections, a real-time icon appears in the status bar. The icon flashes if there is a problem with the real-time source. Use the Status section to view detailed information about the real-time status. Use this screen to check that the TerraSync software is receiving corrections. When the TerraSync software is receiving corrections, a real-time icon appears beside the source in use. This icon indicates the type of correction source. Updating data Your supervisor has sent you to Starfish Bay to update information on existing signs. As you did not record the original road signs you do not know exactly where they are. Use the TerraSync software and a real-time source (if it is available) to navigate to them. [. . . ] The question appears in a message box and is indicated by the sound the field computer uses for the Question event. The TerraSync software continues to operate but no position information is received until the battery is replaced. This sound plays repeatedly and the battery icon in the status bar flashes when the battery in use by the GPS receiver is running low and needs to be replaced. GPS position quality has dropped below the level you have specified because the visible satellites are too close together in the sky. [. . . ]