 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
HCS320 датащи(PDF) 12 Page - Microchip Technology |
|
|
|||||||||||||||||||||||||||||
HCS320 датащи(HTML) 12 Page - Microchip Technology |
|
|
12 / 38 page  HCS320 DS41097D-page 12 © 2011 Microchip Technology Inc. 5.6 Blank Alternate Code Word Federal Communications Commission (FCC) part 15 rules specify the limits on fundamental power and harmonics that can be transmitted. Power is calcu- lated on the worst case average power transmitted in a 100 ms window. It is therefore advantageous to minimize the duty cycle of the transmitted word. This can be achieved by minimizing the duty cycle of the individual bits and by blanking out consecutive words. Blank Alternate Code Word (BACW) is used for reducing the average power of a transmission (Figure 5-1). This is a selectable feature that is deter- mined in conjunction with the baud rate selection bits BSL0 and BSL1. Using the BACW allows the user to transmit a higher amplitude transmission if the trans- mission length is shorter. The FCC puts constraints on the average power that can be transmitted by a device, and BACW effectively prevents continuous transmission by only allowing the transmission of every second or every fourth code word. This reduces the average power transmitted and hence, assists in FCC approval of a transmitter device. FIGURE 5-2: BLANK ALTERNATE CODE WORD (BACW) Code Word BACW Disabled (All words transmitted) BACW Enabled (1 out of 2 transmitted) BACW Enabled (1 out of 4 transmitted) A 2A 4A Amplitude Time Code Word Code Word Code Word |
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
