పరిశ్రమ వార్తలు

ఏకాక్షక కేబుల్ విస్మరించకూడదు

2021-03-03

ఏకాక్షక కేబుల్ విస్మరించకూడదు

 

 

 

ఏకాక్షకCసామర్థ్యం ("coax" for short) has long been used to transmit data and video signals. It is one of the first media to support 10BASE2 and 10BASE5 Ethernet, which can achieve 10 Mb/s up to 185 meters or 500 meters, respectively. s transmission. The term "coaxial" means that the central conductor of the cసామర్థ్యం and its shield have the same axis or center point. Some coaxial cసామర్థ్యంs may have multiple shielding layers, such as a four-shielded coaxial cసామర్థ్యం, which contains two layers of shielding, and each layer of shielding is composed of aluminum foil wrapped with wire mesh. The shielding characteristics of coaxial cసామర్థ్యం make it have strong anti-electromagnetic interference ability and can transmit high-frequency signals over long distances.

 

Although we usually think that coaxial cసామర్థ్యం is only used in broadband video and cసామర్థ్యం television (CAటీవీ) home applications, in the business enterprise environment, from closed circuit television (CCటీవీ), audio and video to RF antennas, and even some network connections, you can find Its figure. Therefore, it is very necessary to understand this cసామర్థ్యం medium and how to test it.

 

ప్రధాన రకం

 

There are many different types of coaxial cసామర్థ్యంs that support a wide range of professional applications, such as satellite communications, industrial, military, and marine applications. The three most common types of non-industrial Coaxial cసామర్థ్యంsఉన్నాయిRG6, RG11మరియుRG59, వీటిలోRG6సాధారణంగా ఉపయోగిస్తారుCCటీవీ Cసామర్థ్యంమరియుCAటీవీ Cసామర్థ్యం in corporate environments. The center conductor of RG11 is thicker than RG6, which means that its insertion loss is lower and the signal transmission distance is longer. However, thicker RG11 cసామర్థ్యంs are more costly and very difficult to bend, which makes them unsuitసామర్థ్యం for deployment in indoor applications, but more suitసామర్థ్యం for long-distance outdoor installations or straight backbone links. RG59 is more flexible than RG6, but its loss is higher. It is rarely used in other applications except for low-bandwidth, low-frequency analog video applications (rear-view cameras in automobiles) with short distances and limited wiring space.

 

 

సెంట్రల్ ఆఫీస్ (టి 3 లైన్ అని కూడా పిలుస్తారు) ట్రాన్స్మిషన్ సేవలో ఉపయోగించే డిజిటల్ సిగ్నల్ 3 (డిఎస్ 3) సిగ్నల్ కూడా ఉపయోగిస్తుందిCoaxial cసామర్థ్యంs75 తో సహాΩ 735 type and 734 type. The 735 type cసామర్థ్యం has a coverage distance of 69 meters, while the 734 type cసామర్థ్యం has a coverage distance of 137 meters. RG6 cసామర్థ్యం can also be used to transmit DS3 signals, but the coverage distance is shorter.