15 - VBOX Mini Troubleshooting
My VBOX Mini does not pick up or lock onto satellites
Some modern cars are fitted with a special windscreen that cuts down the amount of UV (Ultra Violet) rays that will be
transferred through the windscreen which help cut down on glare. These windscreens are called athermic, or UV Coated
and will dampen/reduce GPS signals coming through the windscreen, so if you have an athermic windscreen, it means
you will not receive the same quality of signal as you would do by taking the VBOX Mini outside of the car.
How do I know if I have an Athermic Windscreen?
You can either contact the manufacturer of your vehicle, or talk to the main authorised dealer who may be able to tell
you. If you cannot receive a firm yes or no, then another way to check is to power up the VBOX Mini and hold it outside
of the vehicle, receive a satellite fix and use the GPS diagnostic screen to see how many satellites you can see. Once
you have noted this down, move the GPS inside the car and see if the GPS signal drops by 2-4 sats. If it does
immediately then you probably have an athermic windscreen.
There is list of cars in the table below that we believe have had Athermic windscreens fitted throughout part of their
history. Please note that manufacturers don't always use the same windscreens through the life of a car model, so even
though a model may be listed below, it does not necessarily mean that the current model that you have may have an
Athermic windscreen. If you are unsure, try the above test or talk to your car manufacturer/dealership.
https://racelogic.support/01VBOX_Automotive/01VBOX_data_loggers/VBOX_Mini/
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