The design process determines the inherent quality, cost, performance and reliability of the product. Our product design regards quality design as an important part of the R & D process, and improves the quality level of products through prevention and quality optimization design activities. There are strict quality control standards for design activities to ensure that every step meets the requirements.

We have strict and perfect inspection procedures and test standards. All circuit boards are put in the + 45℃test chamber for 100 hours of aging test. All complete machines will be put in the - 10℃/+ 50℃test chamber for 4 hours of high and low temperature test. Every machine will be tested for vibration. Standard test procedures ensure all instruments can achieve the best performance and longest service life.

All of the OTDR are tested by standardized testing process. Step 1:Dynamic Range Test We will readjust or weed out one machine unless its test result shows that it has good performance in Dynamic Range Test. Step 2:Blind Area Test Event Blind Area and Attenuation Blind Area of each instrument are tested under suitable test conditions. Step 3:Distance Accuracy Test The most accurate calibration factor is selected by comparing the standard optical fibers of different lengths.