Ok for me also.
After the special sequence (touch in x arrangement) :
System -> Service -> Signal Ctrl Ph Noise Opt, and is on by default.
I have a problem, possibly simple or already explained in the post : if I save a setup, and if I recall it after, trace is in "freeze" mode (indicated at left of screen), and if I go in menu "Trace/PF", the "Trace Type" button is in "freeze" state but it's impossible to change it (light gray).
The setup is for EMC test with pass/fail selected (same as described by Dave). More simple setup is in freeze state after recall, but it is possible to change "Trace type" in "Clear Write" for example.
Only solution is then to restart DSA or press "preset" button and redo same setup, but with button. Sure it's simple !
Any idea ?
Edit : found solution. Switch Pass/Fail in "off", then set "Trace type" to "Clear Write" and then set "Pass/Fail" to "on".