Externally modulated optical transmitter with SNMP management, indoor, 1550nm, 2 output port, ≥7mW output optical power, 47~862MHz, SBS, 13/16/18dBm or adjustable, imperial F type female port, FC/APC or SC/APC connector, RJ45 and RS232 port, VFD, 19" 1U.
Features:
◇ Narrow bandwidth (Typ.=1MHz), lower noise, DFB continuous wave laser
◇ The operating bandwidth is up to 47~1080MHz
◇ Perfect index: Unique innovation technology, provide excellent CNR, CTB, CSO & SBS
◇ Perfect RS232 communication interface
◇ SNMP network management function optional
◇ 1+1 backup power supply optional
◇ Casing temperature auto-control
◇ Excellent P/P ratio
◇ AGC/MGC mode is optional at spot. OMI can be optimized at spot
Description
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 and 1550nm externally modulated optical transmitter is the core equipment in this system.
1550nm externally modulated technology has no laser chirp, low dispersion distortion, and large extinction ratio, with excellent characteristic within 40~862MHz. External Modulator doesn't generate CSO distortion after reasonable bias. It can be followed by amplifier when used in large area coverage of over-long trunk and local networks. Adopting WDM, multi-wavelength optical channels can be transmitted through one fiber. 1550nm optical fiber CATV follows the current development trend of triple-play and fiber to home.
Parameter
Item | Specification | ||
Optical feature | |||
Optical wavelength | 1548~1563nm 1530~1563nm | CATV wavelength ITU standard | |
Wavelength ADJ. range | ±1.6nm(±200GHz) | ||
Wavelength ADJ. mode | ±0.5nm stepping | ||
Linewidth | =0.651MHz | FWHM(△λ) | |
Side mode suppression ratio | 45dB | SMSR | |
Extinction ratio | 20dB | XP | |
Equivalent noise intensity | -160dB/Hz | RIN (20~1000MHz) | |
Output power | 2x7 | 2x5, 2x9 options | |
Return loss | 50dB | ||
Optical fiber connector | FC/APC or SC/APC | ||
RF feature | |||
Work bandwidth | 47~862MHz 47~1000MHz 47~1080MHz | ||
Input level | 18~28dBmV | AGC | |
Fatness | ±0.75dB ≤±1.5dB | 862~1000MHz | |
Rerun loss | >16dB | 47~1000MHz | |
Input impedance | 75ohm | ||
RF port | F female | ||
Link feature | |||
Transmit channel | PAL-D/60CH | PAL-D/99CH | |
CNR1 | 53dB | 51.5dB | Back to back |
CNR2 | ≥51.5dB | ≥49.5dB | 65km optical fiber 0dBm receive |
CTB | -65dB | ≤-65dB | |
CSO | -65dB | ≤-65dB | |
SBS restrain | 13~18dBm | Adjustable | |
General feature | |||
Network management interface | RJ45, RS232 | Support IE &SNMP | |
Power supply | 90~265V/50/60Hz | -48V optional | |
Power consume | ≤50W | Single power works | |
Work temperature | ℃ | Machine temperature Control automatically | |
Storage temperature | -40~85℃ | ||
Relative humidity | 5~95% | ||
Dimension | 19inch,1U |