HT8520T (47~862MHz, CNR1¡Ý54dB, SBS:13~18 adjustable)
Top-class ITU wavelength adjustable External Modulation Optical Transmitter

Product description
Huatai HT8520T, it's 1550nm externally modulated optical transmitter in keeping with the highest standards, the whole unit lamp-house adopts narrow line width (Typ.=0.3MHz) , low noise, continuous wave DFB laser, be propitious to reduce dispersion effect. The laser adopts ITU standard wavelength, the user can across the LCD menu in front of the whole unit, push the keystoke to realize ± 0.05nm step advance, laser wavelength can adjust and set ±200GHz ( ± 1.6nm) range, apply WDM network upgrade and enlarge capacity. Whole unit signal modulate adopt American JDS-U company CATV appropriative LiNbO3 external modulation and Huatai independent intellectual property rights of optimize control technical, to realize to back to back CNR ¡Ý 54dB, CTB ¡Ü -65dB, CSO ¡Ü -65dB, SBS: 13~18dBm continue adjustable high index. Whole unit equipped perfect RS232 communicate interface and SNMP network management, 1+1 power supply back-up, chassis temperature auto control. All of the optical port can install in the front panel, (also can appoint install in the back panel).
Huatai HT8520T, top type external modulation optical transmitter with it's high index, high reliability and excellent cost performance, applied to large and medium-sized cable television head-end of the long trunk, WDM systems and CFG dispersion compensation system.

Product feature
·External module technology, no laser chirp, low dispersion distortion, High extinction rate, applied to large and medium-sized cable television head-end of the long trunk .
·Narrow line width (Typ=0.3 MHz), low noise, and DFB continuous wave laser, be propitious to reduce dispersion effect.
·CNR ¡Ý 54dB and excellent CTB, CSO index.
·SBS: 13~18dBm, continuum adjustable.
·ITU standard wavelength, user can across the LCD menu in front of the whole unit, push the keystoke to realize ±0.05nm step advance, laser wavelength can adjust and set ± 200GHz ( ±1.6nm) range, apply to WDM system and network upgrade and enlarge capacity.
·AGC/MGC mode is optional at spot, OMI adjustable optimized at spot.
·Perfect RS232 communicate interface.
·Advanced SNMP network management function.
·1+1 powers supply back up.
·Machine case temperature control automatically.

Main application
·Applied to large and medium-sized cable television center bureau head-end, applied to the long trunk and distribute net.
Analogue digital mixed transfer > 200Km (with dispersion compensate).
Pure digital transmission (without dispersion compensation) > 400Km, (with dispersion compensation) >700Km.
·VAS in DWDM fiber CATV system
·CFG dispersion compensates system.