wireless products
1. What is wireless?
wireless products English translated: Wireless Product
general, wireless (Wireless) < span style = "font-family: Arial;"> means "radio" or "radio waves."
then wireless products (Wireless Product) < span style = "font-family: Arial;"> can be understood through the "radio" or "radio waves" to carry out liaison, communication, control and other acts ( or working ) products.
wireless products by function points can be divided into a wireless transmitter ( Transmitter ) and the wireless receiver ( Receiver ).
Transmitter in the wireless area generally referred to as Tx ;
Receiver in the wireless area generally referred to as Rx .
in real use two mutually whole, are indispensable.
Note : Sometimes, the wireless receiver also generates emissions, which we call double Workers work product.
2. Why wireless product certification?
theory: the radio frequency is infinite ( 0 ~ ; ∞ Hz ); actual use of the process: the frequency of civilian products generally concentrated in the ( 0 ~ 40GHz ).
then the usual limited frequency how to manage? This requires a variety of Frequency Allocations for our field of use, range, firing size.
and national security concerns in the country, in 0 ~ 40GHz many of frequency is not open to civilian products, we must avoid inadvertent use or occupy these frequencies, thus resulting in a variety of unwanted consequences. These considerations require that we conduct various tests on wireless products and obtain the appropriate national certification.
3. R & TTE ( Radio and Telecommunications Terminal Equipment Directive ), radio and telecommunications terminal commands.
wireless remote control products exported to the EU, communication products, must comply with the R & TTE directive (Radio and Telecommunications Terminal Equipment Directive) -1999/5/EC requirements.
R & TTE instructions included products are:
1 , short-range wireless remote control products ( SRD ) example: remote control toy car, remote control alarm system, remote control doorbell, remote control switch, remote mouse, keyboard, and so on.
2 , professional radio remote control products ( PMR ) example: professional wireless intercom, wireless microphones. Corded telephone, fax, MODEM , telephone answering machine , small switchboard ( PABX ), cordless phones CTO , CT1 , CT1 + < / span> ..., ISDN (digital phone products), DECT (Digital Enhanced Cordless Telephone), GSM , CDMA ...
3 , Bluetooth products such as: Bluetooth headset.
4. R & TTE application process is different depending on the product band has some differences, for low-frequency wireless products, we usually refers 27MHZ , 49MHZ < / span> , 40MHZ , 433MHZ , 315MHZ , 88-108MHZ , 35MHZ , 72MHZ And these frequencies in various regions and countries use different.
United States can use the band
27MHZ , 49MHZ , 40MHZ , 433MHZ , 315MHZ , 88-108MHZ , 72MHZ
Europe can use the band: 27MHZ , 40MHZ ,, 35MHZ , 433MHZ
For such a simple wireless products, we usually encounter need to apply FCC , R & TTE etc., the following is FCC
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R & TTE brief description of the application process:
1 ) by the customer to provide a complete test sample and complete with accessories, submitted to the laboratory;
