The METROLink™ HLD 7105T-Cxx is a family of high performance DFB laser transmitter modules designed for forward path narrowcasting applications. The DFB laser’s wavelength is stabilized and aligned to one of forty wavelengths on the ITU grid with 100 GHz (0.8 nm) spacing. Using Dense Wavelength Division Multiplexing (DWDM), digital narrowcast services can be carried on a single fiber and targetted by wavelength. The new HLD 7105T-Cxx transmitter includes electronic dispersion compensation which enables high channel loads while minimizing fiber induced second order distortions. The HLD 7105T-Cxx transmitters can operate in simple point to point narrowcast transport or in combination with the METROLink series of gain flat optical amplifiers for complete system solutions.
The HLD 7105T-Cxx transmitter modules are very compact with 10 transmitter modules fitting into a single three rack unit high HLP 4200 platform. The transmitter modules fit into the platform via the HMC 4000 module carrier adapter. Set up is possible three ways: via the HLP 4200WD platform front panel menu, the RF adjustment on the module front panel, or the NETWatch™ Element Management System.
The HLD7105T-Cxx transmitter provides up to 1GHz RF bandwidth. They makes it possible for customers to consume ever increasing amounts of video content. This includes high definition television, narrowcast services such as VOD, personal video recorders (PVR), network PVR, time-shifted TV and Internet gaming. Continuous high performance and reliability of the transmitters are assured by a microprocessor and associated firmware which control and monitor all vital functions. Monitored functions include laser temperature and operating point, optical power, module temperature and composite RF drive level.
