| Customization: | Available |
|---|---|
| Optical Transmitter Case: | Optional |
| Transport Package: | Neutral |
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1. Product Summary
1550nm direct modulated optical transmitter is the important equipment to construct the two-way CATV HFC network. Mainly used for TV image signal, digital television signal, telephone voice signal and data (or compressed data) signal fiber input in the all-optical network. This product adopts the imported high-performance DFB laser as the optical source. The RF drive part adopts RF power digital automatic processing technology (independently developed by ourselves) and advanced RF pre-distortion circuit, and built-in microcomputer automatic monitoring system, ensures the excellent performance indicators.
2. Performance Characteristics
1. Adopt international famous brand, high-performance DFB laser, narrow spectral lines, good linearity and high output power.
2. The RF drive part adopts the RF power digital automatic processing technology which is our company independently developed. Can automatic processing the drive level power according to the input RF signal level and the number of channels (15-110 channels), make the CSO, CTB and C/N index always at the optimal value to ensure that the overall performance.
3. 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.
4. Adopt advanced 32 bits processor; coordinate with perfect automatic monitoring system circuit. It can timely and accurately monitor working status of the laser to ensure a stable output optical power and effectively extend the working life of the laser.
5. Built-in blue screen 160×32 dot matrix LCD monitor on the front panel, accurately display all working status parameters.
6. 19″1U height standard rack mount, equipped with standard Ethernet interface correspond with IEEE802.3 10Base-T and RS-232 interface, can conveniently realize network management monitoring.
7. Full support <GB/T 20030-2005 HFC Network device management system specification>.
3.Technique Parameters Table
|
Item |
Unit |
Technique parameter |
|
Output optical power |
mW |
10 |
|
Optical wavelength |
Nm |
1550±20 |
|
Laser type |
DFB laser |
|
|
Optical modulation mode |
Direct optical intensity modulation |
|
|
Optical connector type |
SC/APC |
|
|
Frequency range |
MHz |
45-1006 |
|
RF input level |
dBuV |
72-88 |
|
Flatness in band |
dB |
±0.75 |
|
RF input impedance |
Ω |
75 |
|
Input return loss |
dB |
≥ 16(47-550)MHz; ≥ 14(550-1006)MHz |
|
C/CSO |
dB |
≥ 60 |
|
C/CTB |
dB |
≥ 65 |
|
C/N |
dB |
≥ 51 |
|
AGC control range |
dB |
±5 |
|
MGC control range |
dB |
0-10 |
|
Power supply voltage |
V |
AC 110V-250V(50Hz)(dual power) |
|
Consumption |
W |
30 |
|
Operating temperature |
°C |
0 -- 45 |
|
Storage temperature |
°C |
-20 -- +65 |
|
Relative humidity |
% |
Max 95% No Condensation |
|
Dimension |
mm |
483(L)×380(W)×44(H) |
4. Block Diagram
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