Guangtai Externally Modulated CATV 1550nm Laser Transmitter Ht8500A

Product DescriptionGT is the well-known manufacture in analog externally modulated optical transmitter in the world. HT8500A, a kind of low cost 1550nm Externally Modulated Optical transmitter, is specially designed for networking application of second-grade service area. It is named as HT8500A second-grade service area 1550nm Externally Modulated Optical Transmitter. HT8500A series Externally Modulated CATV transmitter adopts low noise, narrow bandwidth, and continuous wave laser DFB laser as its light source and adopts low cost single-output LiNbO3 external modulator that is specially designed by JDS-U to modulate signal , which reduce the cost of the transmitter largely. Based on a series of characterized optimization and technical innovation, HT8500A Optical transmitter can reach excellent system index with flatness ≤ 0.75dB in-band 47~862MHz, 13dBm SBS, point to point >50Km, (0dBm receiving) CSO ≤ -65dB, CTB ≤ -65dB, CNR ≥ 52dB. The whole unit is equipped with perfect RS232 communication interface, SNMP network management, 1+1 back-up power supply, and casing temperature auto-control. All the optical port for HT8500A Optical transmitter can be installed in the front panel (The back panel is also available if needed).HT8500A second-grade service area 1550nm Externally Modulated Optical Transmitter, with its high index, high reliability and outstanding P/P ratio, is an ideal choice for second-grade service area.Product Features1. High performance: no laser chirp, low dispersion distortion, high extinction ratio, with excellent characteristic within 47~862MHz in-band.2. Narrow linearity width (Typ=1MHz), low noise, DFB continuous wave laser.3. The operating bandwidth is up to 47~1000MHz.4. High index: unique innovation technology, offers excellent CNR, CTB and CSO.5. SBS: 13dBm, point to point>50Km optical transmission.6. ITU standard wavelength, ±200GHz (±1.6nm) adjustable.7. AGC/MGC mode is optional at spot. OMI can be optimized at spot.8. Optional RS232 communication interface and SNMP.9. Optional 1+1power supply backup.10. Casing temperature auto-control.11. Excellent P/P ratio.Main ApplicationHT8500A Optical transmitter used in second-grade service area of sub-station. With excellent P/P ratio, provide second-grade users with high quality and high reliability value added service such as RFTV, IPTV, VOD and so on. It can avoid the limitation on transmission bandwidth and distance as well as system CSO deterioration caused by laser chirp for adopting 1550nm direction modulated optical transmitter.Technical Index  PerformanceIndexSupplementOpticalfeatureOperating wavelength(nm)1548~1563HT8500ACITU-TG.692HT8500AUWavelength ADJ. range(nm)±1.6 (±200GHz) HT8500AUWavelength ADJ. mode ±0.05nm steppingHT8500AULinewidth(MHz)≤1.0FWHM( △λ ) Side mode suppression ratio(dB)≥45SMSREquivalent noise intensity(dB/Hz)≤-160RIN ( 20~1000MHz )Output power of each port(dBm)≥3.0, ≥4.5, ≥6.0, ≥7.0, ≥9.0 Return loss(dB)≥55 Optical fiber connector SC / APCOptional LC / APC,FC / APCRF featureWork bandwidth(MHz)47-862Optional 47~ 1000MHzInput level(dBmV)18~28AGCFlatness(dB)≤±0.7547~862MHz≤±1.5862~1000MHz ( Optional )Return loss(dB)>16 Input impedance(Ω)75 RF port F-Female Link featureTransmit channel PAL-D / 60CHPAL-D / 99CH CNR1(dB)≥52≥50.5Back to backCNR2(dB)≥50.5≥4950Km optical fiber, 0dBm receiveCTB(dB)≤-65≤-65 CSO(dB)≤-65≤-65 SBS restrain(dBm)13AdjustableGeneral featureSNMP network management interface RJ45 Communication interface RS232 Power supply(VAC)90~26550 / 60 Hz(VDC)-4830~72Power Consume(W)≤50Single power worksWork temp.(ºC)-5~65Machine temp. control automaticallyStorage temp.(ºC)-40~85 Relative humidity(%)5~95 Size (W)x(D)x(H) ( " )19×14.5×1.75  Flow ChartShipping Mode       FAQ1. What are the payment terms of payment?Usually, we accept T/T, PayPal, Western Union, and Alibaba Trade Assurance. You can select the terms of payment which is more convenient for you.2. What about the lead time?Usually, if there's stock, we ship the goods within 5-7 working days after the deposit is confirmed. If it is out of stock, the lead time depends.3. How about the shipping?When the package is small, we will deliver the goods via international Express like FedEx , DHL,TNT and UPS and so on. Door to door delivery service will be provided; while the goods have high weight and volume, we suggest using air or sea shipment.4. Can you do OEM for us?Yes. if there is a certain order quantity, we can do OEM including printing, logo, and customized model for you.5. What are the advantages of your products?A. Good quality and competitive pricesB. Strict quality control during production process.C. Professional operations in processes of production, sales, assembling, packaging and shippingD. Good after-sale service. Professional online technical support can be provided. Moreover, if there is any problem of the goods, we will help to solve the problem or provide replacement of the goods6. How about the Warranty?There are 12 months for the warran