Which comprises the following steps: step 1, providing an optical module to be debugged; step 2, writing the two bias current DAC values into a register of an optical module to be debugged; step 3, determining luminous efficiency eta and threshold current I th (ii) a. Which comprises the following steps: step 1, providing an optical module to be debugged; step 2, writing the two bias current DAC values into a register of an optical module to be debugged; step 3, determining luminous efficiency eta and threshold current I th (ii) a. In this context, PHY can be understood as an optical module. When testing PRBS, there are 3 test nodes: MAC ----> PHY, PHY -----> MAC, and PHY ----- PHY. Example: For device N9200-64DC, test ports. Getting the best from VIAVI ONT 800G FLEX Test Modules for development, debugging and validation of coherent and ZR optical modules. The VIAVI ONT-800 family has been supporting pluggable digital coherent optics module (DCO) development from early 100G CFP through to the very latest 800G ZR. InfiniBand offers a technological pathway for building AI/ML networks, with its primary advantages being low static forwarding latency and hardware fault self-repair. In building a high-performance InfiniBand network, OSFP-800G-SR8 and OSFP-SR4-400G-FL InfiniBand optical modules serve as one of the. Higher bit rates (50 Gb/s and higher) and adoption of advanced modulation formats (PAM-4 or Coherent), require complex digital signal processors (DSPs) in optical pluggables. The presence of DSPs can potentially make Ttr and Trt significantly different. The evaluation board can test the optical eye diagram, electric eye diagram, optical power, wavelength, sensitivity and power consumption of SFP28 module at the same time, and test the. The assumption is that TP1 is equivalent to B on the host testing and B' on the module testing and TP4 is equivalent to C on the host C' on the module. Assumes that the connectors and compliance boards are perfect and lossless For Outputs: Measure and specify the signals with the compliance board.