Prevail, CATV, CATV Equipment manufacturer / supplier in China, offering CATV 1u Optical Transmissin 1310nm, 1550nm Optical Amplifier EDFA 32 Port with 32 Pon Prot, Digital Multi-Functional 8 in 1 Ts Receiver and so on.
1. Product Summary Optical transmitteris the most important equipment to construct the CATV HFC network.It mainly used for the long distance optical fiber transmission of TV image signal, digital television signal, telephone voice signal and data (or compressed data) signal. This product does use the high-performance DFB laser as the optical source. The RF drive part adopts RF power digital automatic processing technology and advanced RF pre-distortion circuit, and built-in microcomputer automatic monitoring system, to ensure the excellent performance indicators.
2. Performance characteristics
Adopt high-performance coaxial/butterfly DFB laser, narrow spectral lines, good linearity and high output power.
The RF drive part adopts the RF power digital automatic processing technology. Automatic processing the drive level power according to the RF input signal level and the number of channels (15-84 channels), make the CSO, CTB and C/N index always at the optimal value to ensure the overall performance.
Advanced multi-frequency RF pre-distortion technology, combined with the GaAs device, effectively improve the CATV system most important CTB and CSO index, C/N index also gets the maximum upgrade.
Adopt advanced 32 bit processor; coordinate with perfect automatic monitoring system circuit. It can timely and accurately monitor working status of the laser to ensure a stable optical output power and effectively extend the working life of the laser.
Built-in blue screen 160×32 dot matrix LCD monitor on the front panel, accurately showing all working status parameters.
19″1U standard rack mount, equipped standard IEEE802.3 10Base-T Ethernet interface and RS232 interface, can expediently realize network management monitoring.
Fully support <GB/T 20030-2005 HFC Network device management system specification>.
3. Technology Parameters 3.1Link test conditions Special instructions: The performance parameters of this manual according to the measuring method of GY/T 143-2000 <Specifications and methods of measurement on AM optical transmitter and receiver used in CATV systems>, and tested under the specified test conditions. Test condition: With standard optical fiber and standard optical receivercomposed the test link. Set 84 PAL-D analog TV channel signal at 750MHz frequency range under the specified link loss. When the optical input power of optical receiver is -1dBm, measure the C/CTB, C/CSO and C/N. 3.2 Technique Parameters Table
Optical output power
Optical link loss
Optical modulation mode
Direct optical intensity modulation
Optical connector type
FC/APC or SC/APC
RF input level
Flatness in band
RF input impedance
Input return loss
≥ 16(47-550MHz); ≥ 14(550-750/862/1003MHz)
Power supply voltage
0 -- 45
-20 -- +65
Max 95% no condensation
3.3 Optical link carrier to noise ratio degradation table