24 Apr 11 GPS receivers are not being recognized by Microsoft Streets & Trips.
Symptom:
When “start GPS tracking” in Microsoft Streets & Trips, you are receiving the following message
“The GPS receiver is sending messages, but they are not being recognized as NMEA 2.0-compatible. Make sure the GPS receiver input/output format is set to deliver NMEA 2.0-compatible messages at the correct baud (4800 bps).”
Solution:
Change your GPS baud rate to 4800 bps.
If your GPS is using SKYTraq Chipset GPS, please download the “configure serial port Baudrate.zip” tool to change the baud rate.
10 Feb 11 My tracks seem to be on wrong position where I have never been. And there are straight lines across the map. Why?
Some of the deviation is acceptable for GPS because when the satellite signal reaches ground, it is very weak. So during the beginning of GPS fix process, GPS may not get enough satellite signal to achieve a very accurate position. Thus the deviation will occur.
Also there is another condition which will result in deviation.
When GPS is situated in low speed or not moving at all, the GPS position will drift including speed and altitude. This is because the born limitation of GPS design. Every GPS chipset in the market all have this phenomenon. This is why the “Auto Filter” feature be designed to lower down this phenomenon.
05 Feb 11 Why sometimes the GPS logger / GPS receiver has less battery run time than usual?
GPS has longer battery runtime under optimum environment. For those non optimum environments, (For example. when keep trying a position fix, seeking Bluetooth Connection, or under an unstable environment – bad weather, forest, buildings.) GPS would need more calculation and power consumption. So that battery runtime is less than the one in optimum condition.
31 Jan 11 The GPS driver installed successfully, but the GPS application software fail to recognize the GPS. How to correct this problem?
1. Please open the “device manager” on your PC. In the “Ports (COM & LPT)” section, please noted down the COM port of the GPS device. For example, the COM port is COM15 on below picture.
2. Manually select the corresponding com port in your GPS application software. For Example.
31 Jan 11 How to know whether the GPS driver successfully installed on my PC?
Please open the “device manger” on your pc & check “Ports (COM & LPT)” section. If you see “GPS USB Serial Interface Driver, which means the driver installed successful. Vice versa. Please refer to following example.
30 Jan 11 GPS takes long time to lock the satellites (up to 10 minutes) even “see” the sky unblockly
Suggestion: Use the GPS diagnostic application (e.g. GPSviewer, GPSinfo) to system reset/cold start the GPS. It will reset the GPS registers.
