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. Functional Debugging Commands Reference 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:. It is to debug QSFP28 serial optical module, working with USB_I2C firmware. In the current, it supports QSFP28 SR4 product. The device tree. Debugging photonics chips requires specialized tools that can monitor and analyze optical signals alongside electronic ones. This article shows you how to extend GDB with custom breakpoints that. CodingBox, or 3-in-1 CodingBox, is designed for easy coding, I2C reading and writing, I2C test, DD ( DOM ), detailed parameters interpretation based on MSA, online debugging based on script for optical transceivers, SFP, SFP+, SFP28, XFP, QSFP, QSFP28 and so on. Our team is dedicated to contribute.