Hi,
We have some FMC 130 devices on our vehicles. Recently, some of these devices have been sending incorrect data. At times, they report incorrect points (even though the timestamps are correct), and other times, they show non-zero speed even when the vehicle has been stopped for a while.
Upon further review, I realized something. The location data has the correct time, but the position is incorrect! For example, let’s say we have three geographic points, where points 1 and 3 have both the correct geographic position and time, but point 2 has the wrong position, although the time is correct! On the other hand, although the server time is working correctly, the device is several minutes (sometimes even hours) off, and after a while, it automatically corrects itself!
notice that the point 2 is where device was there several hours ago
Please check how many satellites are available from the configurator. if you receive fewer satellites, try to change the location of the device.
Make sure that you have follow the correct device installation: FMC130 First Start - Teltonika Telematics Wiki