Sounds like you have a power supply ripple issue.
-Chuck Harris
Raymond Domp Frank wrote:
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On Thu, Sep 3, 2020 at 06:32 PM, Chuck Harris wrote:
Randomness doesn't exist in the digital logic world.
Some would argue randomness doesn't exist - full stop, nor does a digital world.
Thanks for that, Chuck. So the 7854 uses (pseudo) random sampling? If something is wrong with the pseudo random generator, i.e. repeating partial sequences a few times, then continuing, that could explain the repetition of the garbling that I thought I saw. And doesn't it show that AQR takes far too long and just repeats until finally meeting acquisition complete criteria or thinks it meets them and doesn't? That's not an acq. RAM or DAC problem. That looks more like a random address generator/acquisition-complete problem.
BTW, I just noticed a similar 3/sec or so slight brightness flare in the steady-state display. Video artifact or Z-modulation? Power supply?
Raymond
