A grounding scheme for improved high speed probing of a system-under-test using a ground rail positioned on the SUT near each side of a package attached to the SUT having signal access points, whereby each of the ground rails are electrically connected to a ground access point of the SUT. The first display is preferably a touch screen monitor, which allows the entry of data into the controller without the need for a keyboard. Methods are disclosed on the combination of scanning regimes and modes of operation to achieve versatile functionality in measurements, in the 3D imaging of moving tissue such as the eye, heart, or moving embryos or functionallow noise imaging by making use of angular compounding or polarisation. Logs of multiple layers are marked for long groove cuts and for final corner notch cuts. The opening defines the location of a parting line beyond which the fluid will not travel on the second side of the wafer.