External Modulated 2 Ports Catv Optical Transmitter 1550nm Wavelength 9dbm
Description
1550nm externally modulated optical transmitter is the core equipment in this 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. Adopting EPON or P2P access mode to realize triple-play, FTTx , RFTV broadcasting network in 1550nm optical transmitter wavelength still plays an important role.
1550nm directed modulation optical transmitter max support 20km transmission distance.
If more than 20km, then it should be 1550nm extener modulated optical transmitter.
FTTH Diagram
Product Features
●Both the external modulator and laser are imported from the United States or Japan.
●Perfect pre-distortion circuit ensures the best CTB and CSO when the CNR is in high standard.
●Perfect SBS suppress circuit and adjustable SBS in 13~19,suitable for different types of CATV net.
●AGC control.
●Internal double power which can be changed automatically.
●Automatically shell temperature control.
●Internal microprocessor software has the function of laser monitoring, parameter display, fault warning, net management and so on. Once the working parameter of the laser goes out of the fixed value of the software, the machine will warn.
●The transmitter provides RJ45 and RS232 standard interface for the connecting the computer and monitoring.
Details
|
Parameter |
Specification |
|
Product Name |
Optical Transmitter 1550nm |
|
Working Wavelength |
1550±10 |
|
SBS adjustable |
13 ~ 19dbm or 13,16,18,19dbm adjustable |
|
Output Optical Power |
1x5,1x7,1x9,1x10,2x5,2x7,2x8,2x9,2x10,2x11 |
Technical Specification
|
Parameter |
Index |
Remarks |
|
|
Optical Parameters |
Wavelength (nm) |
1550±10 |
1x5,1x9, 1x10,2x5,2x7,2x8,2x9,2x10,2x11 |
|
|
Output power (dBm) |
1×3 ~ 2×10 |
|
|
|
Optical return loss (dB) |
≥60 |
|
|
|
Connector type |
SC/APC |
Or FC/APC |
|
RF parameters |
bandwidth (MHz) |
47~862/1000 |
|
|
|
Input level (dBmV) |
23±5 |
AGC |
|
|
Flatness (dB) |
≤±0.75 |
45~862MHz |
|
|
Return loss (dB) |
≥16 |
45~750MHz |
|
|
Input inpedance (Ω) |
75 |
|
|
Link Parameters |
channels |
PAL-D/60ch |
|
|
|
CNR (dB) |
≥53 |
65Km fiber,Receive0dBm |
|
|
CTB (dB) |
≥65 |
|
|
|
CSO (dB) |
≥65 |
|
|
|
SBS (dBm) |
13~19 |
Step 0.1 |
|
General Parameters |
Net interface |
RJ45,R232 |
|
|
|
Power (V) |
90~265 |
Or -48VDC |
|
|
Power loss (W) |
≤50 |
|
|
|
Working Temp(℃) |
0~50 |
Automatically shell temp control |
|
|
Storage Temp(℃) |
-20~85 |
|
|
|
Working relative Temp |
20%~85% |
|
