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1550nm Directly Modulated Transmitter Support 30KM

1550nm Directly Modulated Transmitter Support 30KM

1550nm internally modulated optical transmitter for long distance transmission 30KM adopts advanced electric dispersion compensation technology based on the standard model. The standard model will create serious chirp distortion (the bias current of the laser is modulated by the sigh and optical frequency is shifted and jittered). The distortion becomes more and more serious with the increase of transmission distance, transmission bandwidth and the number of channels. The device adopts the advanced technology of EMD compensation. According to the actual transmission distance, it can be accurately compensate in 1km step. The max compensation distance can reach 50km. It is mainly used in large area coverage and long-distance point-to-point transmission of secondary optical fiber network. It provides high-quality but low-cost solution to realize triple play and FTTx transmission system. 


Features

  • It adopts advanced electric dispersion compensation technology. According to the actual transmission distance, it can be accurately compensate in 1km step. The max  compensation distance can reach 50km.

  • It adopts original low chirp and high linearity DFB laser as signal source.

  • The perfect pre-distortion circuit ensures the perfect performance of CTB and

      CSO in high standard CNR value.

  • Automatic gain (AGC) control enables stable output in different RF input level.

  • Different networks can be optimized by OMI adjustment.

  • Fully automatic case temperature control, intelligent fans, the fans starts to work when case temperature reaches 30℃.

  • Built -in dual backup power supply, hot plug and automatic switch supported.

  • The working parameters of the whole machine are controlled by microprocessor

      and the LCD status display on the front panel has many functions such as laser status monitoring, parameter display, fault alarm, network management, etc.; once the                 working parameters of the laser deviate from the allowed range set by the software, the system will alarm promptly.

  • Standard RJ45 interface provided, supporting remote network management of  

     SNMP and WEB.



 Installation

2.1 Preparation before Installation

      2.1.1 Please examine the machine to see if there is distinct.

       2.1.2 Please examine if the accessories is complete and the quality cards is here.


 If not, please contact sales or dealer. 

2.2 Installation

      2.2.1 Please keep a space about 4.5cm between machines for ventilation. 

       2.2.2 Please make sure: the socket works very well and well grounded; The

                impedance ≤4Ω; 220V power with three cables, the middle one should connected to the 

               ground. Incorrect grounding may hurt the device or influence the quality of signal.

      2.2.3 Please make sure the key is turned to OFF before the power supply 

              connected.

      2.2.4 Please keep the interface of the fiber clean before connecting the fiber. The 

connector could choose FC/APC or SC/APC. 


3. 2 Main Technical Parameters


Category

 Items

Unit

Index

Remarks

Min.

Typ.

Max.

Optical Index

Operating Wavelength Range

nm

1528.77


1563.86

Compatible with ITU wavelength

No. of Output Ports

No


1

2


Output Power per Port

dBm

3


10

1dBm interval

Laser Linewidth

MHz


0.65

1.0


SMSR

dB

45

50



XP

dB

20




RIN

dB/Hz



-160

RIN(20~1002MHz)

Optical Return Loss

dB

50




Fiber Connector


SC/APC

FC/APC、LC/APC

RF Index

Operating Bandwidth

MHz

47


1002


Input Level

dBμV

75

80

85

AGC

Flatness

dB

-0.75


+0.75

47~1002MHz

Return Loss

dB

16



47~1002MHz

Input Impedance

Ω


75



RF connector


F Metric/Imperial

Specified by user

Link Index

Dispersion Compensation Distance

Km



50


CNR1

dB

48.0



25Km, 30Km 0dBm 59CH Analog+40CH digital

CTB1

dB

63.0



CSO1

dB

60.0



CNR2

dB

46.0



50Km, Rx 0dBm 59CH Analog+40CH digital

CTB2

dB

63.0



CSO2

dB

55.0



General Index

Network Management Interface


SNMP,WEB supported


Power Supply

V

90


265

AC

-72


-36

DC

Power Consumption

W



30

Dual Power Supply, 1+1 standby

Operating Temp

-5


+65

Auto case temp control

Storage Temp

-40


+85


Operating Relative Humidity

%

5


95


Dimension

mm

370×483×44

D、W、H

Weight

Kg

4.1



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