The PCIe Clock Jitter Tool is designed to enable users to quickly and easily take jitter measurements for PCIe Gen1/2/3/4/5 and SRNS/SRIS. This software takes away all the guesswork of PCIe Gen1/2/3/4/5 and SRNS/SRIS jitter measurements and margins in board designs. This tool will provide you with accurate results in just a few clicks. This software tool is provided in an executable format to support various common input waveform file, like .csv, .wfm and .bin. The easy-to-use GUI and helpful tips guide users through each step. Release notes and other documentation are also included in the software package.
From: https://www.silabs.com/products/timing/pci-express-learning-center
My question is what value if any would be in your work?
Clem
PS For a tutorial try this: