单/双通道消光比测试仪可独立进行偏振消光比测试、光功率测试、数字校准、自动选择量程，配备 USB(RS232) 接口，编写上位机软件可自动进行数据测试、 记录、分析，可方便地组成自动测试系统。 广泛应用于光通信设备、光纤、光无源器件与光有源器件的测试，功率范围宽、测试精度高、性价比高、可靠性好。
The single/dual channel extinction ratio tester can independently perform polarization extinction ratio test, optical power test, digital calibration, and automatic range selection. It is equipped with USB (RS232) interface. The upper computer software can automatically test, record, and analyze data, and can easily form an automatic test system. It is widely used in the testing of optical communication equipment, optical fiber, optical passive components and optical active components. It has wide power range, high testing accuracy, high cost performance and good reliability.
