Logic analyser glitches and ground bounce?

[japlytic]

When I use a logic analyser for Timing measurements, I often get short glitches of a few nanoseconds in some cases even though the system under test functions correctly, but when I make State measurements (clocked by a specific signal with a rising or falling edge), the glitches are gone.
So I happened to run into an article about ground bounce, which most likely corresponds to the problem I am having.

Could the logic analyser be introducing ground bounce at the logic analyser, even though it may be a good design?

[stj]

Re: Logic analyser glitches and ground bounce?

i dont know about bounce, but grounding on high speed stuff is tricky.

are both devices grounded via the mains supply or other secondary route?
is your probe-ground short and not wraped over some other signal source?

[japlytic]

Re: Logic analyser glitches and ground bounce?

are both devices grounded via the mains supply or other secondary route?
is your probe-ground short and not wraped over some other signal source?

Both are grounded by the mains supply and the probe ground length is not excessive.

[stj]

Re: Logic analyser glitches and ground bounce?

well hopefully the manis earth is only capacitivly coupled.

maybe you can wrap the signal-earth through a ferrite ring a few times?