DDM, DOM, RGD-What functons do they represent?

DDM, DOM, and RGD are common in SFP transceiver names, which make users confused. In fact, DDM (Digital Diagnostics Monitoring) is a technology that enables users to monitor real-time parameters in SFP modules like input power, output power, and temperature. DOM (digital optical monitoring) is similar to DDM, allowing users to monitor the parameters of the SFP transceiver. RGD means the SFP is a “rugged” grade transceiver that is well fit for industrial networking applications such as manufacturing automation, substations, and smart transport systems.