User Manual

2.6 Helpful Tips

It’s better to turn off the 850 when you don’t use it, or the serial Flash's life

can’t last long.

Some vehicles having heavy metallic sun protecting coating on windshields

may affect GPS signal receptions

Driving in and around high buildings may affect GPS signal receptions.

Driving in tunnels or indoor park may affect signal receptions.

In general, any GPS receiver performs best in open space where it can see

clean sky. Also weather will affect GPS reception – rain & snow contribute

to worse sensitivity.

Low battery of a PDA or of an 850 may affect signal receptions.

Please check the correct “COM” and “Baudrate” of your PDA.

850 output data updates every second, therefore the actual position and the

position shown in your map may have slight time delay. This may happen

when you drive at higher speed or make a turn around a corner.

Note that 850 may not work indoors where it can not see the sky.

For the 1

time you use the 850, it will take 1 to 3 minutes to obtain the

satellite constellation information and fix your position, this is called “Cold

Start”. If you replace the battery, 850 will do Cold Start again.

If your 850 can’t fix your position for more than 20 minutes, we suggest you

change to another spot with open space and then try again.