What is the smart community cable
Cable choice is one of the vital link in the construction of the digital cell. Taken several options: 1, twisted pair;, coaxial cable;, fiber. From the practical point of view, twisted pair, due to price factors than the latter two cable has an advantage, but because it should not be used in the video needs, in addition to the theoretical length of not more than 100 m (transmit data), so after two 10Ft 10Ft 15Pin Monitor VGA SVGA M/M Cable 3.5mm Audio
worth considering. Here I will list the advantages, disadvantages and applications of the three cables.
Can be used to transmit analog, digital signal, its broadband up to 268KHz, the digital signal, the baseband signal to send, up to several Mbps, such as T1 line data transfer rate up to 1.544Mbps, and can achieve 15km data transfer (an increase of the repeater), but not suitable for transmitting high-frequency data, such as video. Applicable to the choice of the point-to-point and multipoint.
Can be used to transmit video and data signals. Transmit analog signals, the frequency can reach 300-400MHz. High-speed data transfer rate can reach 50Mbps. The typical range of data transmission within 1km 10Mbps (tens of kilometers of transmission, but need to add a repeater). Its more expensive than UTP, but the number of devices may be limited to about 20-30 units. Suitable for transmission of video, data, etc., suitable for point to point, point-to-multipoint connection.
Not only can be used to transmit analog and digital signals, but does not meet the needs of video transmission. Its data transfer rate up to thousands of Mbps. If you do not use the repeater, the transmission range can reach 6-8km.
Looking at the development of the wiring system at home and abroad in recent years, we can see three stages: a UTP stage. At this stage, the voice with the large-scale data communications can not be mixed to adapt to the data communication. 2 coaxial + twisted-pair stage. It can meet the user's data transmission and video needs, but need more access devices, the cost relative to many, and difficult future expansion needs. 3, the fiber stage. The final stage of what we call, at this point, the corresponding ancillary equipment better, the data processing power, and better scalability. In recent years, the development of fast, the price of access equipment is subject to adjustment, we can say that this step integrated communication stage.