nctnico: 2N3055:
Calibration does nothing to fix it.
Fungus:
Approximately less than 10% more than 1%.
It does it at lower frequencies but it is a lot harder to trigger on it reliably and find it (and it is a lot less obvious).
Shift was caused by daisy chaining the channels, most other tests were done with them being fed via equal lengths cables from same T (see attached photo).
Also, you will probably not see any significant noise due to the time base and sample rate (it's only 20 samples per division)
bdunham7:
I've been using siglent SDG2122X up to 120MHz and for signals above 120Mhz i've been using HackRF.
I've tried two different setups, with T coming out of signal generator into bnc/coax into 50ohm terminators at scope end (as shown in attached photo) OR generator into BNC/coax into T connected to ch1 (or ch3) and into another BNC/coax to other channel (which caused shift between the channels).
It is possible to catch the glitches without using trigger but it takes longer to find a nice one.
It seems like i might be looking at the same issue as here:
https://www.eevblog.com/forum/testgear/review-rigol-mso5000-tests-bugs-questions/msg3187486/#msg3187486Also, i have a tektronix mso3054 here that does not show any issues with the signal.