At present, there are many fake and inferior optical transceivers on the market. In order to allow security users or consumers to have a clearer understanding of the process of optical transceivers from production to delivery, we will pay attention to how the optical transceivers challenge the triple quality inspection from production and processing to the factory. product. Security products are different from different consumer products. Most of the over-precision electronic component companies choose the outsourcing model, and hand over the core hardware to a professional department for management. The manufacturers conduct multiple quality inspections on the products, which can save a lot of labor costs. It also facilitates the company's management. For large security companies, mature assembly lines are equipped with professional technical personnel. When the shipment volume reaches a certain limit, it is also a good choice to manage the entire production and processing process by yourself.
1. Optical module inspection
is very important. I believe that many people do not know the optical module very well. In fact, in the optical transceiver, the importance of the optical module far exceeds the core chip. It is composed of optoelectronic devices, functional circuits and optical interfaces. Its function is photoelectric conversion. The transmitting end converts electrical signals into optical signals. After transmission through optical fibers, the receiving end converts the optical signals into electrical signals. After the power is turned on, the optical module is in the process of constantly emitting light, and there will be attenuation over time. Therefore, it is very important to detect the work of the optical module.
An optical power meter is needed to detect the optical module. When the optical module leaves the factory, the original manufacturer will hand over the quality inspection report of this batch to the processing manufacturer. The manufacturer uses the optical power meter for actual evaluation. When the difference is within the report range Inside, it is a qualified product.
Optical module inspection can also be regarded as the first hurdle of optical transceiver inspection. Inspection of product parts when they leave the factory is also responsible for the company's own interests. If the unqualified products are not found in time, the waste of raw materials and labor time will inevitably increase the cost of shipments after the second quality inspection, which is also a manifestation of irresponsibility to consumers. Optical transceiver second inspection-waveform comparison.
After the optical module is qualified, it can be installed and processed in large quantities. In addition to the optical module, there are chips and communication circuits on the optical transceiver circuit board. This test is a comparison of waveforms when the product is "streaking"; it is a test of product performance when the product has not been fully formed and has not undergone aging.
2. Inspection after "aging" of optical transceivers.
Unlike other products, most security products require "aging" inspection, which is a test of the high temperature resistance of electronic components. According to Mr. Zhu, if there are any quality problems in security monitoring products, they will often be within the first 24 to 48 hours. Therefore, leaving this initial inspection time to the manufacturer can quickly deal with the problematic products, which is also for customers. Kind of responsibility. Place the formed circuit board in a high-temperature room and conduct a distance test before leaving the factory. This is also the last inspection of the performance of the product before leaving the factory.
Connect the "aged" pair of products to the power supply, carry out analog long-distance signal transmission, and use the video generator to detect whether the transmission signal will have problems such as color difference. The video source can emit different colors and lines, red, gray, gray levels of different degrees, etc., to detect different functions of the image respectively. In addition, if the factory default transmission distance of the optical transceiver is 20km, the bare wire (optical fiber) greater than 20km is generally selected for testing in the environmental test to ensure that the product has long-distance transmission without errors.
Through the above introduction, I believe that everyone has a clearer understanding of the quality inspection of optical transceivers. We also tell you how to detect or test a qualified optical transceiver through actual tests. Security products are not a single product, they need to be integrated from a variety of front-end, mid-end and back-end products; when building a complete monitoring system, no link can be ignored. Therefore, the quality assurance of security products is the key to the success or failure of the monitoring system. Feichang Technology , a professional manufacturer of optical transceivers, optical fiber transceivers, industrial switches, and protocol converters, independently researches and develops brands, welcome to come to understand and exchange.
For more details, please visit Feichang Technology (www.futuretel.com.cn)