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CATV transmitter allows signal transmission up to 30km

01 Aug 2013

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EMCORE Corp. has announced the Medallion 8000 Series 1550nm Directly-Modulated DWDM cable television (CATV) transmitter aimed at wideband applications that need CATV and satellite-intermediate frequency (SAT-IF) signals to be transmitted over fibre lengths up to 30km. According to the firm, the solution facilitates network designs that use a single transmitter to carry multiple signals, while lowering costs, system complexity and rack space requirements.

The Medallion 8000 supports 79-channel NTSC analogue signals and/or a combination of Quadrature Amplitude Modulation (QAM) and SAT-IF signals with a reduced number of CATV analogue channels. It features fixed fibre length options of 0-10km, 5-15km, 10-20km and 15-25km with a maximum of 18dBm stimulated brillouin scattering (SBS) suppression, and is also available with a selectable fibre length option. The selectable fibre length option allows the user to set the Medallion 8000 for best optimised Composite Second Order (CSO) distortions at any fibre length from 0-30 km in 1km increments and has a maximum SBS suppression of 20dBm.

The Medallion 8000 family of transmitter products is designed to support various CATV transmitter applications with a common platform. A 75Ω CATV RF video input supports frequencies up to 1002MHz. Design features including low chirp control, noise suppression circuitry and patented pre-distortion technology that provides outstanding performance with EMCORE'S wide range of cooled broadband directly-modulated lasers. A second 75Ω RF input supports frequencies up to 2700MHz for FTTP, SAT-IF and wireless applications.

Monitoring and configuration of the Medallion 8000 is supported by EMCORE's latest generation Web GUI, Telnet and Simple Network Management Protocol (SNMP) software via a convenient front panel display, RS-232 port and and Ethernet port. The feature-rich WEB GUI and latest SNMP enhancements bring a whole suite of advanced operator monitoring and configuration options to the platform, allowing for secure, simplified and future-ready functionality for the next generation of intelligent networks, detailed the firm. The Medallion platform is mechanically designed for flexibility and space efficiency including universal rack-mount features, modular front panel design for private label convenience, and optional front and rear port placement. Dual-redundant field-replaceable fans and power supplies are standard.

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