Ahrr! Just tell me what to buy! (click on image)

GPS2LT is not a complicated program; there essentially are two screens you see. Below are the screens in the order you will see them.

This is the Preferences screen. It shows the things that the software needs to know that can vary from user to user. Normally you would only have to set the values on this screen once.

Study Name & Number: Each study is stored on the laptop using the name and number you input on this screen. This is usually the name of the principal arterial of the route, but can be anything you want.

Current Data Folder: This tells the software where you want to store the data file. You normally set this once and then don’t worry about it again.

Comm Port: This tells the software which port number to monitor for the GPS data. This is usually Comm 1 on laptops, but can be another number in certain circumstances.

GPS Receiver: Different receivers output data a little differently from other receivers. You need to tell the software which receiver you are using so it will know the format of the data.

Baud Rate: Some receivers have variable baud rates. You can set the baud rate here to match your receiver.

Enable VersaPoint Remote Control: This setting tells the software that you are using the VersaPoint remote control to control the software. Click here for information about the VersaPoint.

Enable Metric Mode for Speeds: This setting tells the software to show and store all speeds in KPH (this setting is primarily for our Canadian customers).

In a normal study you would enter the Study Name, check the other settings which normally don’t change, and then click on Ok.

This is the Main s creen, where all of the action happens. In this screen, the software has connected with the GPS receiver and shows the data on the screen. No data is being stored yet.

You can see the time and the speed of your car. You want to make sure these are ok before you start the actual run. The screen also shows the Latitude and Longitude as well as three parameters that help you determine if you are getting good data from the GPS receiver (see the User’s Guide for more details).

When it is clear that you are getting good data you can drive to the beginning of your route and click the (R)un button or press the R key on the keyboard. This starts the run.

You started the run. The background of the screen changes to green, the (E)nd Study button disappears and a new button labeled (N)ode appears. The counter next to the Run label changes to 1, showing this is run number 1.

The software is now storing the GPS data every second in a file in the laptop. The grid shows the data that is stored, one line for each second.

You can mark new nodes while you drive by clicking the (N)ode button, pressing the N key on the keyboard, or pressing the Spacebar key (this is usually the easiest key to find). The number next to the Node label shows you the number of the current node.

When you are through with the first run, click the (R)un button or press the R key. The software stops storing the GPS data in the file, the background color changes to light red, the Node button disappears, and the (E)nd Study button is visible again.

You now have a choice. You can start a new run, typically in the opposite direction from run 1, by tapping on the (R)un button or you can quit the program by clicking the (E)nd Study button.

If you start a new run, the screen changes to the screen shown above and the process continues.

If you select (E)nd Study, the software closes the data file and closes the program.

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