1. What is a PND?
A Personal Navigation Device is a portable navigation system that can be put in any car, motorcycle or bicycle. It is not connected to the vehicle's electric system and therefore easily exchangeable.
2. Where do I find the information on the software version?The current software version can be found in the system menu "Settings – System".
3. Can I listen to the music during the guidance?
No, for your safety, our navigation system does’t support listening to the music during the guidance. If you want to enjoy music, you are supposed to pull over your car in a safe place.
4. The device does not show any satellites, what can I do?
The GPS signal can be blocked by heated windscreen or tinted windscreens with a vacuum-metalized surface. In this case you will need an external GPS antenna.
5. When do I calibrate the screen?
Under the malfunction of the screen, you can calibrate the screen through the "Setting – system – calibration".
6. How does the GPS work?
GPS satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. GPS receivers take this information and use triangulation to calculate the user's exact location. Essentially, the GPS receiver compares the time a signal was transmitted by a satellite with the time it was received. The time difference tells the GPS receiver how far away the satellite is. Now, with distance measurements from a few of GPS receiver must be locked on to the signal of at least three satellites to calculate a 2D position (latitude and longitude) and track movement. With four or more satellites in view, the receiver can determine the user's 3D position (latitude, longitude and altitude). Once the user's position has been determined, the GPS unit can calculate other information, such as speed, bearing, track, trip distance, distance to destination, sunrise and sunset time and more satellites, the receiver can determine the user's position and display it on the unit's electronic map.
7. How about the accuracy of a GPS?
Today's GPS receivers are extremely accurate, thanks to their parallel multi-channel design. Certain atmospheric factors and other sources of error can affect the accuracy of GPS receivers. Generally, users will see accuracy within 5 to 10 meters (16 to 33 feet) under normal conditions.
8. What thing can effect the accuracy of GPS?Factors that can degrade the GPS signal, and thus affect accuracy, include the following:
· Ionosphere and troposphere delays ? The GPS signal slows as it passes through the atmosphere.
· The GPS signal is reflected off objects such as tall buildings or large rock surfaces before it reaches the receiver.
· Orbital errors, also known as ephemeris errors, these are inaccuracies of the satellite's reported location.
· Poor satellite visibility, the more satellites a GPS receiver can "see", the better the accuracy. GPS units typically will not work indoors, underwater, or underground
9. What should I care when the first orietnation?
For the first orietnation, you must go to an open place without upper shelter, and wait for patiently.
10. What is the average lifetime of the Lio-ion battery?
The average lifetime of this battery type is more than 1000 charge/discharge cycles. This is however highly dependent of how the battery is used.
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