Hi Jonathon & Dan,
I had the same sort of idea regarding the FTDI USB and PPC USB ports.
Not sure how that being held in some partially on partially off
state could create problems for an ADC but maybe somehow corrupts
the power on reset or something connected, even indirectly, to
the FTDI IC
hi jonathan,
here's a remote possibility that might explain some of the behaviour you
are seeting:
when the power goes down to your roach2's,
does the power also go down on the sample clock or 1 PPS distribution?
if the sample clock continues to be fed to the ADC's,
then the CMOS adc chips can
Hi CASPERites,
With experience on quite a few ROACH2s in the lab and in the field for some
years, and a pattern has emerged which warrants a question to the ROACH2
experts on this list. The SAO team has seen strange faults happen on multiple
ROACH2 units after power failures, dips and
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