Description
CATV Optical Transmitter has one optical output power, 10dBm (10mW) 1550nm, power supply AC, supports up to 1.2GHz band and DOCSIS 3.1 system, with two RF inputs and high isolation. The CATV Optical Transmitter supports DOCSIS 3.1 system and up to 1.2GHz band. It easily transmits QAM and IPQAM signals due to its two RF inputs and strong isolation. With electronically controlled dispersion compensation, support a transmission distance of 50 kilometres. For multi-wavelength networking, built-in CWDM is a possibility.
1550nm is the transmission wavelength for HFC downstream, according to Next Generation Broadcasting (NGB) planning and PON regulations. Network transformation is difficult due to the high cost of a 1550nm externally modulated transmitter and the dispersion problems of a 1550nm directly modulated transmitter. As a result, we develop a 1550nm optical transmitter with electronically controlled dispersion adjustment.
The CATV Transmitter can receive and send signals automatically, and it has outstanding performance and stability. The light emitting module is of good quality and will suit your requirements. Laser transmitter equipment, laser light sources, and other electronic devices commonly use optical transmitter and receiver modules. The 1550 Transmitter features a small and convenient handle, is simple to operate, and can be used indoors.
Performance Characteristics
- 1.2GHZ band, support DOCSIS 3.1 system.
- The AGC and MGC gain control modes are optional.
- Two inputs with 50dB isolation for high quality RF insertion.
- Dual power supply; hot backup; a variety of power supply options are available, optional AC220V and DC48V.
- Laser output power, bias current and cooling current are detected in real time.
- Optional CWDM for optical signal insertion.
- Electronically controlled dispersion compensation can support a transmission distance of 50KM.
- Low-cost solution is comparable to the performance of external modulated transmitter.
- ITU standard wavelength is optional.
Specification
Technique Parameters
|
Item |
Unit |
Parameter |
|
|
Optical part |
|||
|
Optical wavelength |
nm |
ITU wavelength |
|
|
Laser type |
|
Butterfly-typed DFB laser |
|
|
Optical modulation mode |
|
Direct optical intensity modulation |
|
|
Optical connector type |
|
FC/APC or SC/APC |
|
|
Output optical power |
mW |
10 |
The insertion loss of the VOA and CWDM is excluded. |
|
External optical signal input |
dBm |
-5～10 |
|
|
RF part |
|||
|
Frequency range |
MHz |
47～870/1003/1218 |
|
|
RF input level |
dBuV |
77± 5 |
|
|
Flatness in band |
dB |
± 0.75 |
|
|
Input return loss |
dB |
≥ 16 |
|
|
RF AGC control range |
dB |
±5 |
|
|
RF MGC adjustable range |
dB |
0～20 |
|
|
RF input isolation |
dB |
≥ 50 |
Isolation between two RF inputs |
|
RF input test port |
dB |
-20±1 |
|
|
Laser drive level test port |
dB |
-20±1 |
|
|
Electronically controlled optical attenuator tolerance |
dB |
≤1: ATT 0-15dB |
|
|
≤3: ATT 16-20dB |
|||
|
CNR |
dB |
≥ 48 |
550MHZ 59CH analog signal 77dBuV/CH 550-870MHZ 40CH digital signal 67dBuV/CH 25 Km, -1dBm input |
|
C/CSO |
dB |
≥ 58 |
|
|
C/CTB |
dB |
≥ 63 |
|
|
CNR |
dB |
≥ 46 |
550MHZ 59CH analog signal 77dBuV/CH 550-870MHZ 40CH digital signal 67dBuV/CH 50Km, -1dBm input |
|
C/CSO |
dB |
≥ 55 |
|
|
C/CTB |
dB |
≥ 63 |
|
|
MER |
dB |
≥ 40 |
25 Km, -1dBm input, 96CH digital 77dBuV/CH |
|
≥ 39 |
50 Km, -1dBm input, 96CH digital 77dBuV/CH |
||
|
Others |
|||
|
Maximum power consumption |
W |
≤10 |
|
|
Operating temperature |
℃ |
-5 ～ + 55 |
|
|
Storage temperature |
℃ |
-30 ～ + 70 |
|
|
Weight |
Kg |
1 | |
Application
Order information
| Product Model | Descriptions |
|---|---|
| BD-5500 | Directly Modulated CATV Optical Transmitter,one optical output power: 10dBm 1550nm, dual power supply |
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