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Open Bench Logic Sniffer / Weirdness with channels 13-15
with channels 13-15.
If I connect anyone of those three channels to logic 0, it does not appear low
in the capture (there's noise like it's floating or something). If I connect two
of those three channels to logic 0, then I see all three as logic 0 even with
the third disconnected. I've also done this with a clock and see the same
behavior (one channel connected to the clock doesn't capture the clock, when I
connect two then all three show the clock signal).
The other channels seem to work perfectly (I've only been using 0-15). I just
updated the firmware and ROM to v1.01 and 3.07 and the behavior is still there.
I'm new to logic analyzers, so I could totally be doing something wrong, but I
can't think what it is. I thought this behavior might be because of disconnected
channels, so I connected them all to ground except the one I'm testing and see
the same behavior.
I've also tested with Sigrok and noted the same behavior (but the software
crashes for probably unrelated reasons - seems buggy ATM). I've been using the
LogicSniffer "offical" client, otherwise.
Any ideas? Is it possibly broken?