Summary
1310nm Optical transmitter is a important equipment for CATV HFC network.It is mainly used for long-distance optical fiber transmission of TV image signal, digital TV signal, telephone voice signal and data (or compressed data) signal. Import excellent high-performance DFB lasers import is used as light source. RF power digital automatic processing technique researched and developed by ourselves and advanced RF pre-distortion circuit are used as RF drive section. Complete microcomputer automatic control system is builted in to ensure excellent performance.
Performance characteristic
1.The High-performance DFB(or coaxial DFB)lasers with narrow lines, good linear and high output power (the highest output power up to 30mw),we select famous brand from the international market for our products.
2.RF power digital automatic processing technology developed and operated by ourselves is used in the part of RF drive.It automatically adjusts the RF drive power according to the input RF signal level and channel number (15-84 channels) to ensure index (as CSO,CTB and C/N) in the best value and overall system performance.
3.Advanced multi-frequency RF pre-distortion technology with RF GaAs device improve the CTB and CSO target the major target of CATV system and the C / N index get the maximum promotion.
4.Various working state of lasers can be monitored accurately in real time by advanced 32-bit processor with automatic monitoring system circuit to ensure the stable optical output power and extend the working life of the laser.
5.160 × 32 dot matrix LCD display is builted in front panel to display the work state parameters accurately.
6.Network monitoring will de achieved expediently by 19 "1U standard rack height with ethernet interface and RS-232 interface conforming to IEEE802.3 10Base-T.
7.It supports <Specification of equipment management system for GB / T 20030-2005 HFC network>.
Block diagram
Item | Unit | Technique Parameter | |||||||||||
Optical Power | mW | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 |
Optical Link Path Loss | dB | 7 | 9 | 10 | 11 | 11.8 | 12.5 | 13 | 13.6 | 14 | 14.4 | 14.8 | 15.1 |
Optical Wave Length | Nm | 1310±20 | |||||||||||
Type of Laser | DFB | ||||||||||||
Optical modulation mode | Direct Optical Intension modulation | ||||||||||||
Optical connector Type | FC/APC, SC/APC | ||||||||||||
Frequency Range | MHz | 47-750/862 | |||||||||||
RF Input Level | dBuV | 72-88 | |||||||||||
Flatness In Band | dB | ±0.75 | |||||||||||
RF Input Impedance | Ω | 75 | |||||||||||
Input Reflection Loss | dB | ≥ 16(47-550MHz); ≥ 14(550-750/862MHz) | |||||||||||
C/CSO | dB | ≥ 60 | |||||||||||
C/CTB | dB | ≥ 65 | |||||||||||
C/N | dB | ≥ 51 | |||||||||||
AGC Control Range | dB | ±5 | |||||||||||
MGC Control Range | dB | 0-10 | |||||||||||
Power Voltage | V | AC 110V-250V(50Hz or 60Hz) | |||||||||||
Power Consumption | W | 30 | |||||||||||
Operation Temperature | °C | 0 -- 45 | |||||||||||
Store Temperature | °C | -20 -- +65 | |||||||||||
Relative Humidity | % | Max 95% no condensation | |||||||||||
Dimension | mm | 483(L)×380(W)×44(H) |
Ortel laser 19'' rack 1310nm Optical Transmitter---WT8600