Brief Introduction about Cable TV Systems: Cable Television Headend and ModulatoPosted by Tracy He on March 12th, 2019 From the wikipedia, we can know the definition about the Cable Television. Cable TV is also known as “CATV” (community antenna television). The Cable television is a system of delivering television programming to consumers via radio frequency (RF) signals transmitted through coaxial cables, or in more recent systems, light pulses through fiber-optic cables. This contrasts with broadcast television (also known as terrestrial television), in which the television signal is transmitted over the air by radio waves and received by a television antenna attached to the television; or satellite television, in which the television signal is transmitted by a communications satellite orbiting the Earth and received by a satellite dish on the roof. FM radio programming, high-speed Internet, telephone services, and similar non-television services may also be provided through these cables. Analog television was standard in the 20th century, but since the 2000s, cable systems have been upgraded to digital cable operation. “A television network available via direct cable channel, available through satellite broadcast, as well as via IPTV channel.” The Digital Modulator System is as follows:
Cable television headend and modulatorA cable television headend is a master facility for receiving television signals for processing and distribution over a cable television system. The headend facility is normally unstaffed and surrounded by some type of security fencing and is typically a building or large shed housing electronic equipment used to receive and re-transmit video over the local cable infrastructure. One can also find head ends in power line communication (PLC) substations and Internet communications networks. Cable television signals are then mixed in accordance with the cable system’s channel numbering scheme using a series of cable modulators (one for each channel), which is in turn fed into a frequency multiplexer or signal combiner. The mixed signals are sent into a broadband amplifier, then sent into the cable system by the trunk line and continuously re-amplified as needed.
24 In 1 Analog Fixed Channel Modulator HeadendSK-24M Features: 7. One unit contains 24 pcs fixed adjacent channel modulator card Adjacent Channel 16 In 1 Analog Headend for Hotel Cable TV SystemSK-16M Dingshengwei Electronics Co., Ltd (DSW) is dedicated to design, manufacture and sales of CATV analog & digital headend with our brand name SOUKA. DSW obtained ISO9001:2008 certificate authorized by CQC. We have 100 in-house skillful workers, which ensures the punctual delivery date. And a professional engineer team made up of 10 senior RF engineers and 6 IT engineers to fulfil precise management over all projects honored by our customers. As one of the most reliable suppliers in this field, we continually spare no efforts in developing DSW into a world recognized brand with trustworthy and solid reputation. DSW sincerely invites you to enjoy the fascinating experience of modern technology and excellent customer service provided for you by our professional staff. Our main products are modulators both in analog and digital ones, amplifier and combiner. We are the very first one in manufacturing the headend system in China. Our 16 in 1 and 24 in 1 now are the most popular products all over the world. In 2016,we launched the digital 16 in 1 headend with 1080P output,which supports all digital TV standards in the world. And we never stop our steps,more products will be released in the coming days. We are young but we have faith to find our path to the peak. CONTACT US Dingshengwei Electronics Co., Ltd Company Address: Buliding A,the first industry park of Guanlong,Xili Town,Nanshan,Shenzhen,Guangdong,China Tel : +86 0755 26909863 Fax : +86 0755 26984949 Phone: +86 13410066011 Email:ken@soukacatv.com Skype: soukaken Like it? Share it! More by this author |
