A flexible harness wrap for protecting bundles or cables laid therein is disclosed. The leg part has an elastic coupling claw projecting outward from the pass-through part to be coupled in the panel hole, and a turn lock part. The die is further provided with an on-die sampling oscilloscope circuit connected to the output port, for measuring a waveform of the outputted signals. However, because of earlier operations, the entire length of casing is typically filled with drilling fluid.