I have tried this capture, but I am not convinced that I have the correct test points on the CD Player I am using.
The Analogue Persistance
display mode seems to work very well for this, but I am still waiting on advice from Steve as to what sort of trace he expects to see and whether or not you need a reference CD to obtain a sensible trace.
If you are interested, there is an article here which details the process of performing the test on a PS2 (I'm still debating whether or not to dismantle mine in the name of science!).
http://www.megagames.com/ps2/ps2_laser_ ... cope.shtml