You’ve to use a Trimble GPS simply by collecting dots and lines. You can set which type of data you want to collect, and then depending on the data, and you can input your point and lines in real-time to create the data. No doubt, this GPS can be overwhelming if you don’t have any idea about it. But, indeed, it is not hard to use.
Different Types of Trimble GPS
There are many types of Trimble GPS out there. But there are mainly two Trimble devices that are most commonly used everywhere. One of them is the surveying device Trimble R8s or any of the similar ones. And the other one is the handheld GPS that works with Terrasync software.
Here we will be focusing on the TerraSync version of the GPS which is best for hiking, camping or any other outdoor activities. The R8 and other similar versions need a lot more training and positional knowledge to work, which is hard to convey in a short form. So, if you are looking for that, it is better to get training on it, which many trained professionals offer.
Trimble GPS Tutorial (TerraSync)
You can use the Trimble GPS manual pdf file or the Trimble training videos for getting a basic idea of how these GPS devices work. But here, we will cover the easiest tutorial.
First, when you start your mobile GPS and start TerraSync, you will get a screen like this. The screen may differ from version to version, but the basic stays the same. So if you are familiar with one screen, you can get around to any version of it.
The device will show some info about your current position on the screen, but the most crucial for your data collection is how accurate the GPS position is. This accuracy is shown by the arrow that is beside the battery on the top bar.
In this picture, the number above the arrow says 1.2m. This means the GPS reading can be 1.2 meters off on either side of the position. This is the accuracy of your GPS reading. The lower this number will be, the accurate the positioning of your GPS will be.
This accuracy is improved when on an open field or in a place where the trees or roof are not blocking the sightline. This way, satellites can get a better reading which causes the GPS to be more accurate.
Setting up Data File
The first thing to do before collecting any data is to set up a data file.
To do that, you have to go to the status and click the arrow to get to the drop-down menu and click on Data. This will open up the option to create a new data file where all the collected data will be set up.
There are a few things you can tweak. The file type will be Rover, and location is the default location where this data will be saved. You can change the file name to whatever you want.
Finally, if you haven’t loaded up any dictionary, go with Generic works for the dictionary. If you need to do specialized data collection, not on the generic dictionary, you must load the dictionary to it and select it.
After you have done everything, press the create button. It will ask if you want to specify a height or measure it on the ground level. This is important data if you are using this handheld GPS device for fishing or other outdoor activities.
If you hold the device in your hand and whopecify that the device is not on the ground level, you can measure and type in the height and press ok. This will create the data file.
After creating the data file, this screen will be present to you. The options to select which type of data you can get will vary depending on the dictionary you select. But the good thing is most of the data collection works in the same way. So learning a few types is enough to do most of the collection.
Before starting the data collection, you should go to the options and set it to log later. What it does is, when you enter the data collection phase, it doesn’t start collecting immediately. You have to start collection manually. This gives time to set up for the collection, which contributes to getting more accurate data.
Collecting Data for a Gas Valve
After selecting log later, to collect data for a gas valve, just select the gas valve option, and press create.
Since you are collecting data on the gas valve, you have to fill up additional information about the valve on the data collection page. Look beside the accuracy arrow, and you will see a pause sign. This is because we have selected the log later option. The GPS is waiting for our signal to start data collecting.
Once you press the Log button at the bottom, the GPS will collect the positional data, indicating a red blinking circle. The number beside the circle is the number of times the GPS has gathered the positional data.
Having it gather around 20 times is better for the accuracy of the data. It will show the mean value of the GPS data collected when you stop the collection by pressing the Done button. Any data that need to collect point works the same way.
Collecting Gas Line/Line
Any data that requires lines will work the same way. To collect line data, you need to do the same as before and make sure it is set to log later and select gas line. But this time, when you start the data collection, it will show a pen instead of a point.
It means you can now move with the device, make a line along the path, and create a data line. But if you do not want to take the line distance like that and want a straight line, you can use the vertex option.
Just go to option then vertex and collect a data point. Since vertex does not move, you have to stay in one place. After getting about 20 readings for the first vertex press done and it will say vertex stored. Now move to where you want to finish the line and repeat the same process for vertex 2.
After collecting two vertexes, the app will automatically connect the two vertexes to make a line. Then press done to save the data you have collected.
Collecting Area Data
The area works the same way as the line. You don’t need to go back to the starting point. Three vertexes or a line around the area will be enough to do the collection. The app will finish the data collection and create a polygon by itself.
Make Sure It Saved the Data
After pressing the Done button, it says feature stored on the top of the screen. It means that the data has been collected successfully.
Checking the Collected Data in Trimble GPS System
Just go to the option, then go to the map to check all the data you have collected.
If you do not want to see it on the map, go back to data and press the update feature from the collect option.
This will show all the data in a list.
Q: How accurate is Trimble GPS?
Ans: It can be as accurate as 30cm.
Q: Does weather affect GPS accuracy?
Ans: They can weaken the GPS signal, but it doesn’t really affect the GPS much.
Trimble is a professional-grade device to have for collecting various kinds of data and updating the map. It is very accurate and easy to use. The portability makes it a good choice for everyone who needs to map out things in their work.