Reviewing a 100 odd buffer capture of A/C ripple showing loaded/unloaded and idle verse 3,000rpm to confirm the alternator was performing well under load as well as normal conditions and noticed that between buffers 32-33 that the signal of 1 channel (chC) dropped by 0.6 better the 2 pages, no other changes, just a "drop" and the trace was missing for 0.5ms on that channel and missing for 0.3ms on ChA and B.
Saved the full trace and then just buffers 31-32 to see if there was some refresh issue or glitch due to file size etc, but the same identical issue is shown in the smaller file (attached):
Zoom into original full file, shows screen redraw lacks 0.25ms of Channel B and 0.5ms of Channel C !!
Can't recall ever seeing something like this! Psdata file for 31-32 and the full file attached.