The parameters reflecting the size of the laser DC bias current

The optical transmitter within the microprocessor system is an important part of the optical transmitter, its function is not only to fully display the state parameters of the optical transmitter.vSampled values displayed by the operating temperature is taken from the ATC circuit, it reflects the actual temperature of the laser tube core, the normal value of the parameter should be at about 25 ℃, of course, there will be a change in the scope, but this range is smaller and more good range ATC control accuracy, I also see that some manufacturers of optical transmitter 23 ° C, 22 ° C, I do not know why; from the characteristics of the optical transmitter laser is 25 ℃ temperature environment. The laser bias current. The parameters reflecting the size of the laser DC bias current, the sampled values from the APC circuit, the laser output power, DC bias current.
The optical transmitter is a high-end professional equipment, its installation and commissioning must be operated by professional and technical personnel, and read carefully before random attachment instructions to avoid damage to equipment due to misuse or accidents caused injury to the operator, and its specific debugging steps are as follows. The transmitter into the front-end cabinet and fixed, reliable chassis grounding equipment before the power, you should confirm the chassis and the power outlet is connected to ground (ground resistance should be less than 4Ω), to prevent electrostatic damage to the laser device, and prevent chassis charged and cause harm to humans. In order to ensure that the equipment long-term stability in the poor areas of the grid voltage instability or voltage waveforms, it is recommended that users with a dedicated AC power supply. green laser pointer  has the laser indicator.
In the region of ambient temperature change is too big or the room environment is poor (the ideal working environment is 25 ° C), necessary for the device is equipped with a dedicated air-conditioning equipment to improve the working environment of the device. Turn the machine off, adjust the front panel Status button to view the equipment operating parameters confirm that the device has entered the normal working condition. The optical signal output optical power meter is connected to the optical transmitter with a standard fiber test jumper, measuring equipment output optical power, and confirm the value of the output optical power and front panel display, and has reached the standard value; in the measurement The optical power should recognize the power meter at the 1310nm wavelength measurement file, to confirm the standard test jumper fiber test jumper for the match. Will be cleaning the fiber optic connector access power meter, measure the output optical power, and to confirm that the optical fiber connector has been cleaned. The audio modulation of green laser pointer  is digital.