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TFT1550 Cable TV system1550nm Modulated Optical Transmitter

Advanced RF signal predistortion circuit design，ensure that the equipment can still have excellent CTB and CSO indicators when the CNR value is ...

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TFT1550 Cable TV system1550nm Modulated Optical Transmitter


Overview        Adopts standard 19 inch rack,TFT1550 is mainly used for indoor front-end program transmission and image / voice signal transmission of any Hybrid fiber coax (HFC) system. Features         ● Advanced RF signal predistortion circuit design，ensure that the equipment can still have excellent CTB and CSO indicators when the CNR value is high；
        ● 45～862MHz or 45～1GHz downlink bandwidth；
        ● Superior SBS suppression design,provides longer transmission distance
        ● Pioneering adjustable SBS function ，provides more flexible configuration；
        ● AGC design，stabilize output performance in different RF input level ranges，simplify installation and operation program；
        ● The built-in microprocessor provides excellent control performance and status display function.
        ● SBS modulated type is 13 to 19dBm（0.5dB step），whether the network architecture is combined with optical amplifiers for 100 km long-distance transmission or 65 km medium distance ring network, it can be adjusted by users according to the application status, so as to reduce unnecessary expenses and reduce the risk of network architecture. Technical Specifications

Performance

Index

Note

Optical Parameter

Laser wavelength(nm)

1550±10

Laser type

DFB

Optical modulation mode

External modulation

Output power(DBm)

2×9

Optional 1×5、1×6、1×7、1×9

2×5、2×6、2×8、2×10

Optical reflection loss(DB)

≥60

Optical connector

FC／APC

Optional SC／APC

RF Parameter  

Working bandwidth(MHz)

47～1000

Input level（DBμV）

83±5

AGC

Flatness(DB)

≤±0.75

47~1000MHz

Reflection loss(DB)

＞16

47~1000MHz

Input impedance(Ω)

75

Link Parameter

CNR(DB)

≥51

CTB(DB)

≥70

CSO(DB)

≥70

Modulation error rate (MER)

≥40dB

SBS Inhibition  （DBm）

≥16

13、16、18 Optional

General Performance

Network management interface

RJ45，R232

Power supply AC (V)

 90～264ty

Optional-48VDC

Power dissipation（W）

≤50

Operating temperature (℃)

-20～85

Fully automatic chassis temperature control

Humidity

20%～85%

Size（mm）

483×381×44

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