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　　Vehicle navigator是一種驅(qū)動輔助設(shè)備，它能夠協(xié)助用戶精確定位當(dāng)時方位，依據(jù)固定目的地計算行程，并經(jīng)過地圖顯示和語音提示引導(dǎo)用戶到達(dá)目的地。完整的GPSVehicle navigator由芯片、天線、處理器、存儲器、顯示屏、揚(yáng)聲器、按鈕、擴(kuò)展功用槽、地圖導(dǎo)航軟件組成。

Mobile devices are transmission devices designed for fixed orientation, usually at least 20 cm away from the human body. In this case, & quot; Fixed orientation & quot; It means that the equipment (including its antenna) is physically fixed in one orientation and cannot be easily moved to another orientation. On board equipment is an example of mobile equipment.

A transmitting device (such as a wireless device associated with a personal computer) that can be easily located from scratch can be regarded as a mobile device if the 20 cm separation requirement is satisfied.

Every manufacturer needs to request FCC certification so that the wireless device can be approved by the regulatory authority of American devices. According to the requirements of the Federal Communications Commission (FCC), market consent mainly refers to the consent of wireless technology equipment in the United States.

In order to make the certification process more effective for manufacturers in the United States and abroad, the FCC appointed a telecommunications certification organization (TCB), which has the right to inspect and agree certification requests on behalf of the FCC.

FCC regulations allow suppliers to apply the current FCC license to their mobile devices only when they are satisfied with the following conditions without additional testing or certification:

It is necessary to set the radio not to exceed the same transmission power authorized for use.

The antennas used with these devices need to be of the same type (i.e. dipole or monopole).

Antennas used with these devices need to have the same or less gain.

It is necessary for the mobile device supplier to add all necessary FCC statements to the user manual. These statements can be found in the product hardware integration guide accessed from the product specification page of the product.

　　文章源自江門Vehicle navigatorhttp://www.t2nupai.cn