Hi Ozan,
Thank you for commenting. No, I just checked and I am in normal A sweep. I changed to B-end-A but no change really. I can see the ramp on U800 changing while rotating the hold-off button but it does not affect the trace. I noticed that the time-base display is 50 ms on the screen for the slowest sweep (when it completely goes across the x-axis) but it does not change for the three or four adjacent positions. Is the signal I observed on the output of U900 normal according to you? Thanks.
Christophe
