[time-nuts] Thunderbolt - temperature
Mark Sims
holrum at hotmail.com
Sat Jul 12 07:06:33 EDT 2008
I suspect that the fluctuation is some sort of noise or software glitch (but one of my systems is powered by a very nice linear supply so probably not power related).
What is strange is the decay. If it was a noise glitch, one would expect it to last one sample. But, it decays back to the original curve over 30 seconds or so. I suspect that there is some kind of filtering of the A/D going on, but one would expect a filter with a 30 second time constant to smooth out the rising edge also.
Perhaps it is seeing a very large glitch, which gets filtered down to a smaller instantaneous transient response. That then gets filtered out over the next 30 seconds.
I saw a couple more of the spikes last night... no apparent correlation with any of the other parameters. Also no disturbances in any of the other values.
---------------------------------------- .
Are the apparent rapid temperature fluctuations observed by some real or
are they the result of inadvertent detection of an intermittent burst of
EMI from a switching supply?
_________________________________________________________________
Making the world a better place one message at a time.
http://www.imtalkathon.com/?source=EML_WLH_Talkathon_BetterPlace
More information about the time-nuts
mailing list