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SIRFDemo (GPS protocols)

The SirfDemo program allows you to configure the GPS receiver which containing a SIRF chip. So you can for example change the data rate or switch protocols on or off. The settings require more in-depth expertise on GPS-System and can disable the Receiver if it is incorrectly configured .

Download:
SirfDemo

An example to activate the GLL protocol.

1. Fist install the software "Sirf Demo".
2. Start "Sirf Demo", choose the right COM-Port and a Baudrate of 4800 Baud. Then click the "OK" button.
3. Start the connection to the receiver and check the function, looks like in the following screen shot.
4. The next two steps are very important. Open the menu "Action" and "Switch to SIRF protocol". Now the device is in a binary mode.
5. Open the menu "Action" and then switch back to NMEA, "Switch to NMEA Protocol".... After that action you can change the protocols and the some other paramter.
Be sure that this picture is like your configuration if you like to activate the GLL sentence. Then click "Send". Now the receiver sends also GLL.