1550nm CATV Optical Transmitter Direct Modulation OPT-OT1550 Series

1550nm CATV Optical Transmitter Direct Modulation OPT-OT1550 Series

1550nm CATV Optical Transmitter Direct Modulation OPT-OT1550 Series I. Main Technical Characteristics 1. The transmitting modules of this machine adopt the imported DFB laser named SEI and so on. 2. The internal RF driving amplifier and controlling circuit of this machine can ensure the best...

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1550nm CATV Optical Transmitter Direct Modulation OPT-OT1550 Series


Optical Transmitter (1) - 副本.jpg

I. Main Technical Characteristics


1. The transmitting modules of this machine adopt the imported DFB laser named SEI and so on.

2. The internal RF driving amplifier and controlling circuit of this machine can ensure the best C/N. The perfect and stable circuit of optic power output and controlling circuit of thermoelectric refrigeration device of laser module assure the user the best quality and stable working for a long time.

3. The internal micro-processor software has many functions such as laser monitoring, number display, trouble alarm and on-line management. Once the working parameter of the laser is out of the fixed range, there will be a red light glistening to alarm.

4. With AGC/MGC control to garantee the prefect CTB and CSO when C/N in high standard.Through pressing the button“AGC/MGC”,it can change AGC control to MGC control and the pilot lamp will disply the working statut.When the transmitter works in the statut of MGC control, use the little screwdriver to turn the screws in the little holes of OMI, then the MER of transmitter will be adjusted.   

5. The RS-232 standard connector makes it is possible to manage on line and monitor in another place.

6. The machine adopts 19”standard shelf and it can work with the voltage from 110V to 254V.



II. Display Board Operation Guide

Press the button “Status” in the board, the working parameter of this machine can be seen in turn as follows,

  1.ModelOPT-OT1550-4,6,8,10

  2.Output Power: display the output power of this machinemW.

  3.Laser Temp: the laser works between 20℃ and 30℃.If the temperature is out of this range, the red light will glisten to warm.

  4.Bias Current: The bias current of the laser is the main working parameter of the laser. Only when the parameter is above 30mA, RF driving circuit can begin to work. The red light will shine to warn when the RF driving level comes out of the fixed value.

  5.REFRG Currentshowing the working current of heating or cooling which can make sure the standard temperature is 25℃.

  6.+ 5V testReadsshowing internal actual Voltage of ±5V.

  7.- 5V testReadsshowing internal actual-5V.

  8.+24V testReadsshowing internal actual voltage of+24V.


III. Main Technical Parameters

Model       (OPT-OT1550)

04

06

10

Optic Power     (mW)

4

6

10

Optic Power     (dBm)

6.0

8.0

10.0

Optic Wavelengt  (nm)

1550±20

Fiber Connector

FC/APC、SC/APC、SC/UPC (Selected by the Customer)

Working Bandwidth (MHz)

45~862

Channels

59

CNR           dB

51

CTB           (dB)

65

CSO           (dB)

60

RF Input Level   (dBμV)

Not with pre-distortion

78±5

With pre-distortion

83±5

Band Unflatness

≤0.75

Power Loss         (W)

≤30

Power Voltage       (V)

220V(110254) OR -48VDC

Working Tem      (℃)

-2085

Specification

19"×15"×1.75"



VI.Diagram


diagram.png





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