Product description
Huatai HT8500H is a 1550nm Externally Modulated Optical Transmitter. It is applicable for main links and distribution network links in large and middle CATV station head-end.
HT8500HC: Laser adopts 1548~1563nm CATV standard wavelength, dual fiber output.
HT8500HU: Laser adopts ITU standard wavelength, wavelength adjustable, dual fiber output. Through the LCD menu in the front-panel, users can adjust and set the wavelength within the range of ± 200GHz (± 1.6nm) by pushing the button with ± 0.05nm stepping.

Product features
High performance: Externally modulated technology, no laser chirp, low dispersion distortion, high extinction ratio, with excellent characteristic within 40~862MHz.
Narrow bandwidth (0.65MHz), lower noise, DFB continuous wave laser, is propitious to reduce the influence of the dispersion.
The operating bandwidth is up to 47~1080MHz.
CNR ≥ 53dB and excellent CTB, CSO index.
SBS: 13~18dBm adjustable.
ITU standard wavelength, ± 200GHz (± 1.6nm) adjustable.
AGC/MGC mode is optional at spot. OMI can be optimized at spot.
Perfect RS232 communication interface.
Advanced SNMP network management function.
1+1 power supply backup, switch automatically.
Casing temperature auto-control.
Excellent P/P ratio.

Main application
Used in main links and distribution network links in large and middle CATV station head-end.
Analog digital hybrid transmission >200Km (with dispersion compensation).
Pure digital transmission (without dispersion compensation) >400Km,
(with dispersion compensation) >700Km.
HT8500HU ITU wavelength adjustable, applicable to the value-added service of DWDM fiber optic CATV system and CFG dispersion compensation system.
It can be used in branch FTTH that has high system index demand. Point to Point>65Km, CSO ≤ -65dB. It can provide high qualified and reliable value-added service such as RFTV, IPTV and VOD for the secondary users. It can also avoid the limitation of CSO deterioration and transmission distance caused by laser chirp for adopting 1550nm direct modulated optical transmitter.