Optical Transmissions

•1550nm transmitter with narrow spectral width
•+6~+10dB AGC range to minimize installation effort and insure consistent long term performance
•Wide frequency range from 47 to 1000 MHz for current and future network applications
•Supports a 77 channel loading along with digital QAM channels, HDTV and DOCSIS3 support.Distortion pre-compensation allows high fidelity links over long distances for high video qualitySimultaneous SBS/SPM suppression supports point-to-point and point-multi-point applications.Variable SBS suppression up to 18dB for high power, long distance access networks
•Optional high output power for long distance applications reduces the need for EDFAsStatus indicators, RF and Optical power monitors, laser and internal alarms
•Front panel display & controls with SNMP remote management for diagnostics & maintenance. Keyedlaser shut-down switch allows safe maintenance of the optical network and components

TXT25-S-AC series optical transmitter adopt top-international brand external modulated laser and external modulator, Luxglo patent pre-distortion circuit and SBS control circuit. Overall indexes reach to well-known brand types level, and price is inexpensive. We have sold thousands of products over the years. The products save plenty of costs for operator’s network construction and get many users’ good reputation.

◆ This 1550nm optical transmitter can be used in long-distance transmission.

◆ Double microwave source SBS control, +13～+19dBm adjustable, 0.5dB step.
◆ Adopt the DFB laser and LiNbO3 external modulator.
◆ support Ethernet transponder

◆ support WEB and SNMP network management.
◆ Hot backup dual power modules

•Intelligent controller maintains a system inventory automatically and constantly monitors status.Universal slot design allows any service module to be installed in any slot.
•High port density to support up to 28 optical networks in a single 4 RU chassis.
•Supports a full range of RF modules (Forward transmitters, Return receivers, EDFAs).
•Front panel controls for status at a glance. No terminal needed!
•Remote management using SNMP allows easy integration to standard management systems.
•AC or DC powering to optimize the power options for each installation.
•Redundant power supplies for high reliability and to minimizedowntime.
•Standard 19” or 23” rack mounted for simple installation.

■Adopt advanced optical AGC control technique, the maximum AGC control range (adjustable) is －9～＋2dBm;
■RF amplifier part adopts the high-performance low power consumption GaAs chip, the highest output level up to 112dBμV;
■EQ and ATT both use the professional electric control circuit, make the control more accurate, operation more convenient;
■Built-in Ethernet transponder, support remote network management (optional);
■Compact structure, convenient installation, is the first-choice equipment of FTTB CATV network;
■External high reliability low power consumption power supply

■ Laser control circuit adopts unique design, the work is reliable and stable.
■ Excellent AGC characteristic, when the input optical power range is -7～+2dBm, the output
level remains unchanged, CTB and CSO basically unchanged.
■ Optimizing circuit design, SMT production process, optimizing the whole signal path, makes the photoelectronic signal transmission more stable, RF linear indicators higher.
■ Professional RF attenuator circuit, with good attenuation linear and high precision.
■ GaAs amplifier device, with good index, low distortion and high reliability.
■ The return path control adopts burst mode, which greatly reduced the noise collection.
■ The shell adopts aluminum die casting, cooling effect is good and the appearance is exquisite