Liên hệ
62 Bà Triệu, Hàng Bài, Hoàn Kiếm, Hà Nội.
Advanced type Externally Modulated Optical Transmitter
(47~862 MHz, CNR1 ≥ 53dB, SBS: 13~18dBm adj.)
Model: HT8500HC (CATV wavelength) & HT8500HU (ITU wavelength adjustable)
Product description
1550nm externally modulated 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.
1550nm externally modulated technology for optical transmitter 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.
Huatai is the well-known manufacture in analog externally modulated optical transmitter in the world. Huatai HT8500H that accords with current international industry technique standard is a 1550nm Externally Modulated Optical Transmitter. The whole unit light source adopts narrow bandwidth ( 0.65MHz ), low noise, continuous wave DFB laser, which is propitious to reduce the influence of dispersion. The whole unit signal modulation adopts CATV special LiNbO3 external modulator of American company and Huatai optimized control technology with independent intellectual property, so it can reach high index of back to back CNR ≥ 54dB, CTB ≤ -65dB, CSO ≤ -65dB, SBS: 13~18dBm adjustable. The whole unit is equipped with perfect RS232 communication interface, SNMP network management, 1+1 back-up power supply, hot-plug function available, chassis temperature auto-control.
Huatai HT8500H, advanced type externally modulated optical transmitter with it''''s high index, high reliability and excellent cost performance, is applicable for main links and distribution network links in large and middle CATV station head-end.
Product features
Main application
Application cases
Network application
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/ºC ) | -1~0 | Tc=20~70℃ | ||
Linewidth | (MHz) | Typ.=0.65 | FWHM (△λ) (-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 |
| ||
Link feature | Transmit channel |
| PAL-D/60CH | PAL-D/99CH |
|
CNR1 | (dB) | ≥53.0 | ≥51.5 | Back to back | |
CNR2 | (dB) | ≥51.5 | ≥49.5 | 65Km optical fiber, 0dBm receive | |
CTB | (dB) | ≤-65 | ≤-65 |
| |
CSO | (dB) | ≤-65 | ≤-65 |
| |
SBS restrain | (dBm) | 13~18 | Adjustable | ||
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. | (ºC) | 0~50 | Machine temp. control automatically | ||
Storage temp. | (ºC ) | -40~85 |
| ||
Operating relative humidity | (%) | 5~95 |
| ||
Size (W)x(D)x(H) | (") | 19×14.5×1.75 | S-Type | ||
19×17.9×1.75 | L-Type |
Product series
Model | Number of output port | Output power of each port | Operating wavelength (nm) | SBS Restrain (dBm) | System index (59 routes PAL-D) | |||
CNR1 | CNR2 | CTB | CSO | |||||
HT8525HC | 2 | ≥4.5 | 1548~1563 | 13~18 | ≥53 | ≥51.0 | ≤-65 | ≤-65 |
HT8527HC | 2 | ≥7.0 | ≥53 | ≥51.5 | ≤-65 | ≤-65 | ||
HT8529HC | 2 | ≥8.5 | ≥53 | ≥51.5 | ≤-65 | ≤-65 | ||
HT85210HC | 2 | ≥ 10 | ≥53 | ≥51.5 | ≤-65 | ≤-65 | ||
HT8525HU | 2 | ≥4.5 | 1528~1563nm | ≥53 | ≥51.0 | ≤-65 | ≤-65 | |
HT8527HU | 2 | ≥7.0 | ≥53 | ≥51.5 | ≤-65 | ≤-65 | ||
HT8529HU | 2 | ≥8.5 | ≥53 | ≥51.5 | ≤-65 | ≤-65 | ||
HT85210HU | 2 | ≥ 10 | ≥53 | ≥51.5 | ≤-65 | ≤-65 |
Test condition: CNR1: Tx to Rx, 0dBm receiving. CNR2: 16dBm EDFA (NF4.5~5.5dB), 65km fiber, 0dBm receiving.
HẾT HẠN
Mã số : | 2854621 |
Địa điểm : | Hà Nội |
Hình thức : | Cần bán |
Tình trạng : | Hàng mới |
Hết hạn : | 31/12/2020 |
Loại tin : | Thường |
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