 Product description Huatai HES-26A CATV & satellite TV 1550nm external modulation optical transmitter, adopts external modulation technology, without laser chirp, extremely low dispersion distortion, large extinction ratio. It fits for high ratio, high broadband, long distance telecommunication network application.
HES-26A adopts frequency division multiplex, and can transmit 47 ～ 862MHz CATV analog and digital signal, 950 ～ 2600MHz satellite TV signal. It provides a whole set of high quality, low cost fiber artery transmission and solution for FTTB, FTTH.
HES-26A can compatible with any FTTx PON technology to realize satellite TV, cable TV, internet integration of three networks. It can choose ITU-T standard wavelength to fit for DWDM system application.
HES-26A adopts low noise, narrow band, continuous wave laser as optical source, it adopts high bandwidth LiNbo3 external modulator as signal to eliminate 1550 nmlaser to control the chirp. Excellent laser APC, ATC control and external modulation bias control ， perfect SNMP, RS232 interface, 1+1 power supply backup. High performance, high reliability and excellent performance price ratio. It is the best choice for subscribers.
 Product feature  External technology without laser chirp，extremely low dispersion distortion，large extinction ratio
47~862 & 950~2600MHz RF working bandwidth
It adopts frequency-division multiplexing (FDM), and can simultaneously transmit CATV signal and 4-way SAT-IF composite signal 4×（950~2150MHz） through one fiber
Up to 3000 SDTV or 600 HDTV channels and CATV to be used at subscribers end
ITU-T standard wavelength adjustable，can be used in DWDM system application
Can use EDFA, YEDFA to long distance transmission and cover large area
Can be compatible with any FTTx PON
Laser APC、ATC、AWC
All electronic adjustable CATV level AGC control , SAT-IF Level MGC control
Telecommunication-grade security and reliability and network management
SNMP support remote management and control
1+1 power supply back up,up hot-plug function available
Excellent performance price ratio in this area
Main application Apply to the extra-long trunk of the central office to transmit analogue and digital TV signal and IF/SAT.
Analogue / digital mixed transmission > 200Km (with dispersion compensation).
Pure digital transmission > 700Km ( with dispersion compensation).
Apply to sub-office (sub-head end), providing value-added service like high quality analogue and digital TV, satellite direct TV, also the IPTV and VOD to the users in secondary service area, avoid CSO deterioration and distance limitation caused by the laser chirp when adopting 1550nm direct modulation optical transmitter.
Related products Applicable receiver: HRS-26A
Product Series Comparison Table HES-26A electrical functional block diagram
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