GIGALIGHT’s 200G QSFP-DD optical transceiver checker can be used to test optical transceivers, AOC and DAC. The checker can read the internal memory EEPROM of the modules and display details of theEEPROM (such as the Part Number, Vendor Name, description and range.), monitor all DDMinformation. In addition it can measure the power of the module.The QSFP28-DD Checker combines the Serial Pattern Generator, Bit Error RateAnalyzer.Itprovides common transmission rate for 8x25Gbps NRZ.The friendly graphic user interface (GUI) provides clear monitoring for bit error rate, bit errorcounter, time, status, power of the module, selection of data rate and PRBS pattern.