User manual TRIMBLE GPSCORRECT EXTENSION 3.14 GETTING STARTED REV A

[. . . ] GETTING STARTED GUIDE Trimble® GPScorrectTM extension GETTING STARTED GUIDE Trimble® GPScorrectTM extension Version 3. 14 Revision A October 2010 F Trimble Navigation Limited 10355 Westmoor Drive Suite #100 Westminster, CO 80021 USA www. trimble. com Legal Notices Copyright and Trademarks © 2002­2010, Trimble Navigation Limited. Portions of the software are copyright © 1995-2008 LizardTech, Inc. For STL support, the software uses the Moscow Center for SPARC Technology adaptation of the SGI Standard Template Library. Copyright © 1994 Hewlett-Packard Company, Copyright © 1996-97 Silicon Graphics Computer Systems, Inc. , Copyright © 1997 Moscow Center for SPARC Technology. [. . . ] If the connected receiver does not provide battery status information to the GPScorrect extension, the left half of the battery icon is empty. The right half indicates the charge level of the field computer battery. · When the battery of the GPS receiver or field computer is fully charged, the corresponding half of the battery icon appears green. The level of green drops as the corresponding battery charge level drops. · When the power level is low, the corresponding half of the battery is yellow. · When the power level is critical, the corresponding half of the icon is red and the icon flashes. If the GPS receiver is powered by the field computer (for example a GPS Pathfinder XC receiver) or is integrated with the field computer (for example a GeoExplorer series handheld), both halves of the battery icon show the same level and indicate the battery status of the field computer. Indicates that an optional external antenna is connected. External antenna icon 72 Trimble GPScorrect Extension Getting Started Guide Forms and Controls 4 Table 4. 1 Icon Status bar: Icons (continued) Name Satellite icon Description Shows whether the geometry of the satellites is good or poor, as configured in the GPS settings area (see GPS settings area, page 78). The satellite icon flashes when the geometry of the satellites (their PDOP or HDOP) is poor. The number beside the icon indicates how many satellites are being used to compute GPS positions. The number flashes when not enough satellites are available. Shows the estimated accuracy of the GPS position. The type of estimated accuracy value shown depends on the parameters set in the Accuracy Settings form (see page 104). The estimated accuracy value may be the estimated accuracy in the field, or it may be the predicted accuracy after postprocessing. To show the predicted postprocessed accuracy, there must be a data file open and the software must be logging GPS positions. When logging H-Star or carrier data, the predicted postprocessed accuracy value applies to all the positions collected since you achieved lock on the required minimum number of satellites. For all other receivers, this value applies only to the current position. The predicted postprocessed accuracy has a 68% confidence level, which means that 68% of the time the postprocessed position will be within the predicted postprocessed accuracy value shown when the position was collected. By default, this icon shows the estimated accuracy in the field. The direction of the arrow indicates whether the estimated accuracy shown is for the horizontal or the vertical accuracy of the current feature. Note ­ The value shown depends on several factors, including satellite geometry and the type of GPS receiver that is connected. An arrow with no estimated accuracy value indicates that the software is unable to calculate the estimated accuracy. [. . . ] If you let the receiver use satellites with a low SNR or elevation, this may decrease the accuracy of positions calculated by the receiver. You are operating in an area of high Move to an area with better GPS coverage and use multipath interference. In the GPS Settings form, set the Velocity Filter field to Auto to apply velocity filtering to positions as they are recorded. If at least one valid real-time correction source is selected in the Real-time Settings form, and the last Choice field is set to Wait for Real-time, then only real-time positions are filtered. No configured real-time source is available, so the Trimble GPScorrect extension is using uncorrected positions. [. . . ]