For all TX measurements of your PCIe 4.0 device you need to setup your oscilloscope to be able to capture the waveforms with enough depth and bandwidth to ensure good signal integrity. This section reviews some basic setup procedures for ensuring your signals are properly scaled, that your bandwidth is set correctly, and that your memory depth and channel setup is optimized for making PCIe 4.0 measurements.It is assumed that you are already working with an oscilloscope that has been properly calibrated and that the cables you are using have also been calibrated and the oscilloscope channels have been deskewed. Refer to the PCIe 3.0 test procedures to review how this is done if needed. (Refer to the next section for CBB4 Setup)