Product category:
Transformers and Inductors
News Release from: Focus EDL | Subject: Excelsus B-V175 balun
Edited by the Electronicstalk Editorial
Team on 30 April 2008
Balun bridges domestic comms gap
The twisted pair telephone or VDSL2 connectors are plugged into one end of the balun and a coaxial cable that is connected to the other end of the balun is plugged into a set-top box.
A new twisted pair to coaxial balun from Focus EDL allows digital subscriber line (DSL) or home phoneline networking (HPN) frequencies to be transmitted from twisted pair to coaxial media, and vice versa, to support VDSL2 and HomePNA deployments Manufactured by Pulse under its Excelsus brand, the B-V175 balun is easily installed with simple plug-in connections
This article was originally published on Electronicstalk on 28 Feb 2005 at 8.00am (UK)
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It matches a 100ohm twisted pair cable, which is a balanced signal, to a 75ohm coaxial cable, which is an unbalanced signal, without degrading the signal.
Telephone companies transmit their signals over twisted pair wiring.
A balun is a passive electronic device that converts between balanced and unbalanced electrical signals.
With the Excelsus B-V175, the twisted pair telephone or VDSL2 connectors are plugged into one end of the balun and a coaxial cable that is connected to the other end of the balun is plugged into a set-top box.
The signal from the phone/VDSL2 line is then able to be used to supply the set-top box and the TV with Internet Protocol television (IPTV).
The B-V175 can pass frequencies from 25kHz to 30MHz from twisted pair to coaxial cable with less than 1.5dB insertion loss across the entire frequency band.
In addition, the B-V175 has a filtered phone port for traditional telephone service telephones.
The B-V175 is the first product in Pulse's family of Excelsus brand twisted pair to coaxial balun family.
The product family will include baluns that support the 12-28 and 36-52MHz HomePNA frequency bands along with custom frequency bands and applications.
In addition, Pulse is currently developing baluns for applications such as closed circuit television (CCTV) for security and surveillance.
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