NRZ and PAM4 serial link design with glscopeclient

This video demonstrates some of the new features in glscopeclient for doing serial link design.
00:00 - TDR analysis of thru lines
03:25 - 10 Gbps NRZ channel
09:42 - 28 Gbps NRZ channel
10:40 - 56 Gbps PAM-4 channel

[@grahamsutherland1106]

This looks really useful for quickly iterating through design and diagnostic ideas, without spending time and money on hardware revisions! Also shows just how demanding PAM4 can be at these rates.