1.Bandwidth up to 47~1080 MHz 2.CNR>=53dB 3.Excellent CTB,CSO index 4.Output level:25 dBmV 5.CATV 1550nm Optic transmitter Product description: HT8500HC (CATV wavelength)HT8500HU (ITU wavelength adjustable)Advanced Type CATV Externally Modulated 1550nm Optical Transmitter(47~862MHz,CNR1≥53dB,SBS:13~18dBm adj.)Externally modulated 1550nm optical transmitter is the core equipment in the RFTV network system.RFTV is a unidirectional analogue and digital video broadcast. It adopts high efficiency modulation mode for RF carrier wave and its economy , flexibility and bandwidth validity is beyond comparison of IPTV. By adopting EPON, GEPON or P2P access mode to realize triple-play and FTTx, RFTV broadcasting network in 1550nm optical wavelength still plays an important role.Externally modulated technology for 1550nm optical transmitter has no laser chirp, low dispersion distortion, and large extinction ratio, with excellent characteristic within 40~862MHz. 1550nm optical fiber CATV follows the current development trend of triple-play and fiber to home. Product features:High performance: Externally modulated technology, no laser chirp, low dispersion distortion, high extinction ratio, with excellent characteristic within 40~862MHz.1+1 powers supply back , up hot-plug function available.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.Casing temperature auto-control.Excellent P/P ratio. Technical Index
| Performance | Index | Supplement | |||
| Optic feature | Operating wavelength | (nm) | 1548~1563 | HT8500HC | |
| ITU-TG.692 | HT8500HU | ||||
| Wavelength ADJ. range | (nm) | ±1.6 ( ±200GHz ) | HT8500HU | ||
| Wavelength ADJ. mode | ±0.05nm stepping | HT8500HU | |||
| Wavelength stability | (Pm/°C) | -1~0 | Tc=20~70°C | ||
| Linewidth | (MHz) | Typ.=0.65 | FWHM ( -3dB fullwidth ) | ||
| Side mode suppression ratio | (dB) | ≥45 | SMSR | ||
| Equivalent noise intensity | (dB/Hz) | ≤-160 | RIN ( 20~1000MHz ) | ||
| Number of output port | 2 | ||||
| Output power | (dBm) | 10,8.5,7.0,4.5 | 2×7, 2×9, 2×10, 2×5, 4×7,6×7 | ||
| Return loss | (dB) | ≥50 | |||
| optical fiber connector | SC / APC | Optional LC / APC,FC / APC | |||
| RF feature | Work bandwidth | (MHz) | 47-862 | ||
| Input level | (dBmV) | 18~28 | AGC | ||
| Flatness | (dB) | ≤±0.75 | 47~862MHz | ||
| Return loss | (dB) | >16 | |||
| Input impedance | (Ω) | 75 | |||
| RF port | F-Female | ||||
| General feature | SNMP network management interface | RJ45 | |||
| Communication interface | RS232 | ||||
| Power supply | (VAC) | 90~265 | 50 / 60Hz | ||
| (VDC) | -48 | 30~72 | |||
| Power Consume | (W) | ≤50 | Single power works | ||
| Work temp. | (°C) | -5~65 | Machine temp. control automatically | ||
| Storage temp. | (°C) | -40~85 | |||
| Operating relative humidity | (%) | 5~95 | |||
| Size (W)x(D)x(H) | 19×15.2×1.75 ( " )483×386×44 ( mm ) | S-Type | |||
| 19×17.9×1.75 ( " ) 483×455×44 ( mm ) | L-Type | ||||
Advanced Type Externally Modulated CATV 1550nm Optical Transmitter HT8500H
