ࡱ> :<97 bjbjUU *7|7|lNNNN Zz$G g66Kp( :|,n ChNPN  a0RHOW TO USE PATHFINDER OFFICE DOWNLOADING, DIFFERENTIAL CORRECTIONS AND EXPORTING Updated 8/02 for version 2.80 After completing your fieldwork, plug your GPS unit into the PC with the download cable. The datalogger for the ProXR (the TSC1) needs to be on, and in file transfer mode. The Geo2 has to be on, can be on any screen. For the Geo3, be sure to have the correct communication port selected under configuration (comms) (i.e. serial clip or support module). Bring up Pathfinder office. A Select Project screen will come up. Pick your project from the picklist, or click New and enter a new project name. Click OK. If the screen doesnt come up you can get it by using File, Projects. TRANSFERRING: Utilities Menu: -Select Data Transferit will try to connect to a GPS unit or datalogger. Be sure your unit is on. -The Data Transfer screen comes up and will say Status: Connected to (whatever your unit is). Make sure the Receive tab is highlighted, and hit the add button. This will then list all files in the unit. You can hit the Transfer All button to transfer all files, or select the ones you do not want and hit the Remove button, then transfer all when all the files listed are ones you want to transfer -The files will be transferred and a status bar will show how long it will take. -When the transfer is done, you can click Close if you dont have more units to download, or click on Disconnect, plug in a new unit, click on Connect, and repeat. -This puts the raw GPS files *.ssf in your project directory. DIFFERENTIAL CORRECTION: old fashioned way: To get Base Station Files, look at the Trimble website at http://www.trimble.com/trs/findtrs.asp. -Within ~300 miles of Albuquerque, go to the Sevilleta Long Term Research site at  HYPERLINK "http://sevilleta.unm.edu/research/outreach/gpscbs/" http://sevilleta.unm.edu/research/outreach/gpscbs/ click on base station data. -When you download the files, put them in the drive:/pfdata/projectname/base directory. -If you are downloading files from the current day, go to the Data directory and download the hours you need. If you are downloading files from a different day, go to the folder that corresponds to the month of the day you are looking for, and download the daily .exe file (all hourly files compressed into an executable zip file). To explode the *.exe files into hourly files, just double click on the file name in the base directory. In Pathfinder Office, Utilities menu: -Select Differential Correction, a Differential Correction window will pop up. -In the Rover Files area, the last files downloaded will appear. If these arent the files you want, click on Browse. If you want to pick multiple files, click on the first one, hold down the shift key, and click on the last one. This should highlight all the files in between. Then click Open, and they should appear under the Selected Files area. -For base files, click on Local Search. The software will look in the base directory (if you put the base files elsewhere, navigate to that spot), and automatically figure out which base files you need for your rover files. A list will pop up with the matching rover and base files, and tell you if there is full base coverage (if not, download additional files) and click OK. It then will read the base station location information (click OK). -When only the Differential Correction window is up with both the Rover Files area and Base Files area populated, click OK. The software will start the differential corrections, and put the *.cor files in your project directory. New fashioned way. (must have internet access on computer) --Dont get base station files beforehand. Go to Pathfinder Office, under Utilities, and click Differential correction. --In the Rover Files area, the last files downloaded will appear. If these arent the files you want, click on Browse. If you want to pick multiple files, click on the first one, hold down the shift key, and click on the last one. This should highlight all the files in between. Then click Open, and they should appear under the Selected Files area. (Same as old fashioned way). --In the Base Files area, click on Internet Search. When the Internet Search Window comes up, click New. Select the Copy most up-to-date list from Trimbles Internet Site, and select from it. Say OK, say Yes when it asks if you want to copy the list. --PFOffice looks at the location of your rover files, and finds all the base stations closest to that location. This will include CORS stations, as well as other base stations on the internet. Not all base stations will be on the list (i.e. the Sevilleta site from above doesnt show up on it). Select the site you want and say ok a couple times, it will start downloading files from the site you selected. Say ok a couple more times, and you will correct your files with the newly downloaded data. --**Note**--for the last few months I have gotten a lot of errors when using CORS stations in this manner. Sometimes it works, most of the time there is a fatal error. Go back to old fashioned way! At this point, exporting depends what kind of GPS unit you used, if you used a data dictionary or not, and what you are going to do with the data. GeoExplorer with Data Dictionary, Exporting to ArcView Shapefile: In Pathfinder Office, Utilities menu: -Select Export, an Export window will pop up. The files you just corrected may be in the Selected Files area, otherwise click on the Browse button to select. -Under the Choose an Export Setup in the picklist, choose Sample ArcView Shapefile Setup. The first time you will need to click on Change Setup Options. Under the Coordinate System tab, you need to make sure you choose a coordinate system, zone, datum, etc that will match this data to the rest of your GIS data. This usually will be Universal Transverse Mercator, zone 13 North, datum NAD83 Conus -Click on okay to export, this will take the information from the data dictionary to export your spatial information into boundary monuments, fence lines, etc (whatever is in your data dictionary!) It averages your points features down to one point automatically. Then you can just bring the shapefiles into ArcView!  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