The battery icon at the top of the screen gives the battery status: the right hand side shows the logger battery charge and the left side shows the charge of the receiver batteries. You can touch the icon for the percent of battery charge available. The higher the number the better. Assign the file a name. Choose the desired data dictionary. A pencil icon on the top of the screen will wiggle back and forth to indicate that data are being logged or will flash to indicate that data cannot be logged.
Each time a point is logged, you will hear a click and the number next to the pencil icon will increase. Note that data will not be logged if the PDOP is too high or if you do not have a real-time connection since we have set these data quality restrictions on the data logger during setup. Fill out the attributes that are requested on the screen.
Press OK when you want to stop logging the feature; this will save it. In order to assure good quality data, it is best to collect 30 points.
Repeat step 4 and 5 for each feature. The data are not saved until you close the file, therefore you should close it occasionally. Updating a File Sometimes you may need to work with an existing file and either update the data or collect new features in the file. Open TerraSync on the data logger. In TerraSync, open the file containing the points to navigate to. You will now see a large circle with an arrow inside.
The arrow indicates the direction to which you want to walk to get to the target. When you get to within 5 meters of your target, the screen will change. To the right of this target there are numbers that tell you the actual distance you are from your target.
Definition of words to the right of navigation screen: Bearing — the angle to the navigational target relative to north. This angle will change as one moves. Heading — the angle of the direction you are traveling.
Turn — the angle you should turn to be on the designated bearing always clockwise. To navigate to a station flag along the plot paths: Walk in a straight line until the bearing states either 0, 90, , or depending on which station you are navigating to and your direction ; you are now parallel to a station flag and can now turn right or left.
If you disconnect the batteries first then you may get an error message when you reconnect them see Trouble Shooting if this happens. Select the"Setup" Section button in the upper left. Leave the data logger turned on when connected to its recharging cable; this allows Microsoft Windows to monitor the charging process. Remove the batteries from the receiver and put them in the charger to recharge. The two batteries that were used for the most time should be placed in the back of the charger.
You should also include any comments about conditions or results, data quality, etc. If you set the maximum allowable PDOP to a higher value, you should mention that here. Connect the data logger to your computer via the cable with 9-pin connectors and turn on the data logger. Open Microsoft ActiveSync on your desktop if it does not open automatically. Select ""No"" you do not want to set up a partnership. Highlight the desired files. Checking the Trimble data file After returning from the field, you need to map your data in GPS Pathfinder Office so that you can verify that your data were collected correctly.
Select the arrow on the toolbar and point to a GPS point. Check the information to verify that it is correct. Deleting files from the data logger After downloading your files, delete them from the data logger unless you plan to update them or use them before another user may need the unit.
Exporting Files When the Trimble data files. If you want to use settings that are different from this setup for a non- LTER project for example , please do not change this setup but instead create your own setup or use another one of the existing setups. Save as file type: CSV Comma delimited. Move the Trimble files. The Data Manager will move the comma-delimited files to the appropriate table in the database. These data will be accessible by querying the database.
The Data Manager will move all the original Trimble files. Select and copy the desired data Open a blank file in Microsoft Excel. Paste in the data from the query. If you plan to import these data back into GPS Pathfinder Office for navigation, you must save the file as a dBase file.
Create one output file for each input file. The file will be saved as a Trimble imported data. To use the file for navigation, you need to transfer the file to the data logger. Collecting Data in Trees or near Obstructions Collecting data in forested area presents special challenges because the trees can block the satellite reception.
If possible, it is very helpful to collect data during the leaf-off period in Fall, Winter or Spring. Mission planning is critical when working in forested areas. Be patient! This protocol requires collecting 30 positions per point. However, depending on the accuracy needed for your application, you may need to settle for " 30 positions per point in the forest.
This protocol requires setting the PDOP mask to 4 but you may find this too restrictive when collecting data under tree cover. Making and Editing a Data Dictionary Before creating a data dictionary, think of the features physical object or an event that you will want to collect and the attributes descriptive information that you want to record about the feature.
You can use word s with more than 8 characters but only the first 8 characters will be used in the file name when it is exported. Select a Feature Classification: point, line, or area. Data to be stored in the database should be collected as a point feature. Using an Offset Point to Collect Data Sometimes you may not be able to collect good GPS data for a point because the satellites are blocked by trees, buildings, etc.
Select an offset point near the desired point that allows you to get a good PDOP. Mark the offset point with a temporary stake if needed.
You will get better quality data if the offset is close to the desired point because the bearing measurement error is exaggerated with greater distance. Set up your compass on a tripod over the offset point. Level the compass using the bubble. Measure the distance in meters from the offset point to the desired point and record it. Measure the bearing azimuth , from north as degrees, from the offset point to the desired point and record it.
If your compass does not account for declination then you need to add the declination for the KBS area: Do not leave the batteries connected to the instrument - they will be discharged. Checking Receiver Status - gives fairly self-explanatory statistics.
Using the File Manager - rename files, delete files, transfer data, or select data dictionary see manual. Collecting Data - Trimble thinks of points, lines and areas as being "features" e. Lines - for mapping a path, ridgeline, etc. This is not much different than collecting Points other than you select Line Generic rather than Point Generic in the Start Feature menu discussed under Points. In Configuring you will need to select the sampling rate that is correct for your experiment.
Then walk out your line while the recorder collects points. Areas - for measuring areas, outcrops, etc. This is not much different than collecting Points other than you select Area Generic rather than Point Generic in the Start Feature menu discussed under Points.
Start Pathfinder Office - it is installed on Veruna. When Pathfinder Office asks you for a project name, hit the New Button and make a project with your name or go to one you already have named. Keep the directory structure clean and orderly. It should tell you it is connecting to the data recorder. When connected, your rover files should show up in the Available Files box.
Select and Add the files you want to transfer Set the Destination directory - it should do so on its own.
Hit the Transfer Button and Pathfinder Office does the rest while you watch the progress bar. Your data are now in your subdirectory project folder on Veruna. When Pathfinder is done, hit disconnect and close the window. If you will be differentially correcting those data you will need to get the appropriate base station data from the USFS. Otherwise, you are ready to proceed to Exporting Data from Pathfinder Office. You have to wait an hour or two in order for the appropriate base station files to get uploaded to the county site.
The rover files are stamped named with local time to help you remember where you were. Once the files are uploaded to the county server they will appear there with names that encode the day, time and date. Select those that overlap your data. If you miss this on the first try, Pathfinder Office will tell you that you do not have complete coverage for the differential corrections. To download a base station file, just right click on it, select "Save Target as" and specify the Base Station subdirectory under your project folder; double clicking works too.
These are. EXE, self-expanding compressed files. To expand the base station file once it is in your subdirectory, open windows explorer, drill down to your subdirectory, and double click on the basestation. EXE file and it will self-expand. You will then have two base files with the same name but one will be.
SSF and the other. You can delete the. EXE's once they are expanded as Pathfinder Office works on the. SSF files. Additional base station data are available from Lewiston and Helena.
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