Q: How do I make my GPS + Glonass output only GP Sentences?

A: Your Unit should be getting GPS from the Sierra Wireless Module. Please follow these steps:

1. Download GetacGPSCommand:

   • Go to https://gps.getac.com

   • Download the GetacGPSCommand tool (usually the first item listed).

   • Unzip the downloaded file.

2. Open Command Prompt as Administrator:

   • Navigate to the folder where you unzipped GetacGPSCommand.exe. You can do this by clicking the path at the top of the folder window, copying it, then opening Command Prompt, typing cd (with a space), and pasting the path, then pressing Enter.

3. Send the NMEA Sentence Command:

   • Type the following command and press Enter: GetacGPSCommand.exe AT!GPSNMEASENTENCE=1F (It should respond with "OK" if successful).

     • Explanation of 1F: This is a hexadecimal bitmask. In binary, 1F is 00011111. This command enables the following NMEA sentence types: GPGGA (GPS fix data), GPRMC (GPS recommended minimum data), GPGSV (GPS satellites in view), GPGSA (GPS overall satellite data), and GPVTG (GPS vector track and speed over the ground). These are all "GP" sentences.^[1]

4. Reset the Module:

   • Type the following command and press Enter: GetacGPSCommand.exe AT!RESET (It should respond with "OK"). This power cycles the module and saves the settings.

5. Verify Output:

   • After waiting about 30-60 seconds for the module to reset, you can verify the output.

   • Type GetacGPSCommand.exe 2 9600 (replace 2 with your GPS COM port if different, and 9600 with the correct baud rate if needed) and press Enter.

   • This will run the GPS for about 10-15 seconds, showing only GP sentences.

6. Verify Getac GPS Service is running and assigned

   • Open Control Panel change change to small / large view at the top right

   • Open Getac GPS Service

   • Open Device Manager

   • Open Ports and look for Sierra or Telit NMEA

   • Make sure Getac GPS Service is pointing to the same COM port as Device manager NMEA

   • Uncheck the Power Save box and click OK

7. Install VPGS-Lite

   • Download VGPS-Lite from this link (contact support if link is expired)

     https://gusanc.getac.com/index.php/s/pnnQdfAs9MMiT53

     password is getac12345

   • Open and run the EXE to install

   • This pulls GPS Data from your NMEA port to COM30 virtual port it creates

8. Test CAD

   • First make sure if you have a config file for your CAD you point the GPS to COM30 or do it in your software if that is where the setting is

   • Make sure you’re in an area that has good GPS signal as you have to be acquired for your CAD to get its location.