欧美亚洲少妇,日韩成人不卡,日韩精品在线免费观看,泰国三级激夜完整版,99综合色,日日射天天干,国产精品亚洲精品日韩已方

What are the transmission distances for the transmission of different signals over five types of unshielded twisted pair wires?

release:admin Browse:3799 times

For the transmission of data, the channel shall not exceed 100 meters at the most and the permanent link shall not exceed 90 meters. When transmitting voice signal, it can transmit 3000 meters.