Transystem 747ProS - Manual (Page 10)

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- If the LED is red, that means battery power is critically low. Charge immediately.
- If the LED is green, that means battery is charging now.
- If no LED light display that means battery is fully charged.
2.3 Helpful Tips
- It’s better to turn off the 747ProS 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.
- 747ProS 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 747ProS may not work indoors where it can not see the sky.
- For the 1
st
time you use the 747ProS, 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, 747ProS will do Cold Start again.
- If your 747ProS can’t fix your position for more than 20 minutes, we suggest you change
to another spot with open space and then try again.