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I. the computer USB can not be directly used to charge the navigator. Most of the required current is relatively large, generally above 1.5A, while the current of the USB interface is generally 0.5A. The current is too small to charge, so the GPS navigator that wants to charge at home and has no home charge should be equipped with its own current adapter.

II. You can't search satellites indoors. GPS navigation depends on the direct reception of American GPS navigation satellite signals. Only local people who need to see the sky outdoors can receive satellite signals. Indoor signals can't be accepted!

IIIJiangmen vehicle navigatorThe battery operation time is short. Generally, the continuous operation time of the battery of the vehicle mounted navigator is not long. Because there is a cigarette lighter power supply on the vehicle, the designer thinks that there is no opportunity to use the battery for a long time. The battery is only used as a backup without plugging in the power supply. The continuous operation generally takes only 40 minutes to 1.5 hours. There will be great differences in different models and applications. It should be noted that at the moment when the car is ignited, the starting current is very large, and there is a risk of burning the car fuse. It is best not to plug in the cigarette lighter when the car is started, and then connect it after starting. If you are using Le LV DVD navigator, you don't have to worry about these problems.

IV. if you can't search the star or search the star slowly, don't worry if you can't search the star or search the star slowly. Please change your address and try again at a different time. Don't use it once or twice or a day or two to decide whether GPS is good or bad, because the satellite condition is different every day. Perhaps in the same place, the signal is full in the morning, but almost in the evening. What factors will affect the GPS navigator to receive satellite signals?

1. SA satellite signal interference of the U.S. Department of defense. (the satellite signal is controlled by the United States, and the signal service may be suspended occasionally)

2. Weather elements. For example, sunspots and bad weather (decreasing signal strength but not affecting positioning) will affect the GPS Car Navigator. GPS signals come from the 24 satellites in the sky, so the atmospheric troposphere, ionosphere and huge buildings on the ground will affect the reception of GPS signals. If you are in the canyon, or on the streets with buildings at both ends, or in the dense jungle, you may not be able to withstand satellite signals, and then you can't search for satellite positioning. Similarly, if you are in a building, the satellite may not be able to identify your current location. Therefore, sunny weather and open space are the main factors affecting GPS satellite search. LETV's navigator can search the stars quickly. The premise is that the vehicle should be located at a suitable address. There are no huge buildings around, nor can it be located under the overpass. Other vehicles had better not stick films containing metal components, which will weaken the signal strength and affect the operation of GPS signal bearing module of navigator.

3. Electrical electromagnetic interference; Under the cover (in buildings, valleys, canyons and tunnels) 4. The heat insulation film, heat insulation paper and metal composition cover on the car windshield. (decreases signal strength but does not affect positioning)

V. abnormal time display

The date and time on the navigator is specially used to display the satellite time. GPS displays normally only after receiving the satellite signal. It is not normal when there is no signal. It is not a common electronic watch, so it cannot be adjusted or saved.

文章源自Jiangmen vehicle navigatorhttp://www.scabusol.com