Scientific Atlanta Model # LLNT 253262 Transmitter. It should fit the mainframe of store product code: OTI-Tx-L-050C. We looked inside (see last photo below), it includes 10mW FLD5F7CZ laser (see datasheet at last pdf link below). With SC/APC fiber adapter. The 2nd and 3rd pdf links are only for different similar models.
• Laser Link LLNT 1558.98NM
• 45-870 MHz
• Part # LLNT 253262
• Model # TX LLNT 1558.98NM
• Class 1M laser product
• Per IEC 60825
General Description
The Laser Link® Modular 1550 nm Optical Transmitters are part of an advanced transmission system designed to optimize network architectures and increase reliability, scalability, and cost effectiveness.
The Laser Link 1550 nm Transmitter Family includes the Externally Modulated Transmitter (LEMT), Narrowcast Transmitter (LLNT), and Narrowcast Return Transmitter (LLNTR). These 1550 nm transmitters are designed to operate over a wide range of optical output powers and loss budgets, delivering both analog and digital signals.
The 1550 nm LEMT applications include supertrunking, hub interconnects, broadcast transmission portion of DWDM architecture and 1310/1550 nm overlays. The LLNT converts input RF narrowcast signal in the 50-870 MHz frequency range to an optical output with a discrete ITU grid wavelength.
Multiple outputs of LLNT products (20 currently) may then be transmitted over a single fiber through utilization of wave division multiplexing. The LLNTR converts RF signal inputs in the 5-210 MHz frequency range to an optical output with a discrete ITU grid wavelength. LLNTR outputs of differing wavelengths may then be combined for amplification and transport over a DWDM system.
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Common Features
• Full-width modules; seven transmitters in a 5 RU chassis
• User adjustable RF input drive power and RF input test point
• Multiple primary/redundant powering options
• Simple implementation and operation
• Excellent link performance
• Allows for simple optimization and configuration
• Network management (status monitoring) ready
• Front panel fiber interface
LLNT/LLNTR Features
• Cost-effective targeted service solution
• Directly modulated DFB laser sources
• Front panel optical test points
• Wavelength on ITU grid
• Front panel LEDs indicate module condition and simplify troubleshooting
