+---------------------+ +--------------------+ | | | | | | | | | | | | + Node N + | | | | | | | | | SUT | | | | | | | | | | | | | | | | | +----------+----------+ +-------+------------+ | ^ | PHY(e.g. Cable) | +---------------------------------+
+---------------------+ +--------------------+ | | | | | Application | | | | | | | +---------------------+ | | | Test Port | | | +---------------------+ | | | Ln | | SUT | | ... | | | | L1 | | | | L0 | | | | | | | +----------+----------+ +-------+------------+ | ^ | | +---------------------------------+