OPTICAL TRANSMITTER

Housing No.  1

Housing No. 2

Housing No. 3

  I  GENERAL DESCRIPTIONS

    Sky Shine-1310nm-OT-AUTO series laser transmitter, the main equipment to build Cable TV HFC network, is mainly used in transmitting the TV image    signal, digital TV signal, TV voice signal, and digital signal (compressed signal) in a long distance. The equipment chooses the excellent  DFB laser as light source and the frequency part adopts the perfect auto processing techniques and advanced predistortion circuit, with the perfect microprocessor auto monitored control system inside, to guarantee the optimized performance of transmitter.

  II  FEATURES AND ADVANTAGES OF SKY SHINE SERIES TRANSMITTER

   1.Choose world-famous DFB laser imported with original package, with narrow spectrum line, good linearity, high output power.

   2.The frequency drive circuit adopts the pluggable AGC circuit and auto processing drive level to keep the indexes of CSO, CTB and CNR in their optimum value and ensure the high performance of transmitter. which also can enhance the value of CNR greatly.

   3.Pluggable multi frequency-point frequency predistortion technology combines with AaGas devices to improve CTB and CSO greatly and enhance the value of CNR greatly.

   4.Perfect microprocessor auto monitored control circuit inside to monitor exactly the optical output power and status of laser to ensure the stable optical output power. And start time delay to extend the laser’s working life.

   5.With blue indicator on the front panel to exactly indicate all kinds of working status.

   6.19”standard rack,  RS485t and RS232 interface net-management interface to realize monitoring net management conveniently.

   7.We have different styles of Housing and we also can provide as per Clint need Housing well come OEM .

•         ORTEL, FUJITSU DFB laser 

•         Automatic Gain Control

•         Plug-in predistortion board

•         Automatic Power Control

•         19”standard mount rack

•         RS485t and RS232 interface

•         Net management software

        Testing conditions：With normative optic fiber and optical receiver composing the testing link, under fixed link loss, lay out 96         PAL-  D analog TV channel signal within the range of 860Mhz and receiving optical power is -1dBm. The indexes of C/CTB, C/CSO,C/N is tested under the above conditions.

    VI  PANEL VIEW

     1. FRONT PANEL VIEW

1、Indicator, to indicate all kinds of status parameters, unit type, release date and so on.

2、LD laser indicator: when the green light on, the unit is in its normal condition.

3、ALM indicate alarm when the unit is out of condition.

4、UP to tip up the indicating contents.

5、AGC indicator to indicate that AGC mode is in operation.

6、ADJ to modulate the RF input level when switch to AGC mode

7、RF test, the RF test port to test the RF signal on link

8、RF input indicator to indicate the status of  RF input signal.

9、POW indicator to indicate the status of power supply. With two power supply, the indicator is green when the main power supply is in work and the light is flittering red when the sub-supply is working.

10、  DN to down the content pages.

11、  MGC indicator to indicate the working status of  MGC.

12、  AGC/MGC switch to switch the mode of AGC and MGC.

13、  MGC modulation to modulate the RF input level when switch to MGC.

   2.BACK PANEL VIEW 

1，OPT OUT, the optical output port of transmitter, which expose invisible laser beam, so don’t look it directly to avoid accident injury to human body and eyes.

2，Cooling fan to provide good surroundings for the transmitter.

3，Cooling fan to provide good surroundings for the transmitter.

4，RFin, RF input port of transmitter, with standardized 75F connector, and the RF input level should be within the range of  75dBuV to 85dBuV, or it will influnce the signal quality( Please note too high RF input level may cause damage to the laser).

5，RS232 standardized interface.

6，RS485 standardized interface.

7，AC220 power input.

8，GND, the grounding end.

    VII  STATUS DISPLAYING

  1. Electrifying Display

         The LCD will display the type of the unit when the power is on, and after about ten seconds, the self-test is finished with sound of  pooping.

  2. Status Display                                                                                                                                                                                

        When the machine begins to work normally, push the UP button on the front panel to switch the display as follows:

            1. +24V POW: 24.3V, when switch power supply is at 24V and the real operation voltage is at 24.3V.

        2. +5V POW: +5.1V, when switch power supply is at 5V and the real operation voltage is at 5.1V.

              3. -5V POW: -5.03V, when switch power supply is at -5V and the real operation voltage is at -5.1-03V.

              4. LD POW: 10.6mw, the output power in work is 10.6mw

              5. LD TEMP: 25℃, the operating temperature is 25℃

              6. LD COOL: 0.25A, when the inside temperature of operating laser is at 25℃, built-in refrigerating current(or heating-up) current is at 0.25A

              7. LD BIAS: 46mA the operating current is 46mA

              8. S/N0000000000000000,  the machine series number is 0000000000000000