Is A Fluke 8000a True RMS ?

Humbug. Just let a microprocessor sample a signal fast enough, an calculate RMS value. The multimeter becomes a bit more expensive though.

Phil Allison wrote in news: snipped-for-privacy@googlegroups.com:

It is averaged. With a DC supply, we call it PARD (Periodic And Random Distortion) and is realted to knowledge of and conditioning of the ripple voltages that a DC supply usually has riding on the overall DC potential.

You are talking about full waveform signatures (fool wave) and yes getting a truly accurate number is likely impossible without some quantum computer looking at the thing. But the industries close guess as we see in our instrumentation's claims are pretty close and good enough for most of why it was needed to measure it to start with.

It would not have looked as good to have a sales tag of:

"True Enough RMS"

Even though that is pretty much what it is.

Sjouke Burry wrote in news:5bcaa11d$0$8539$ snipped-for-privacy@textnews.kpn.nl:

That IS exactly what Fluke and others do. DSPs have been in use for decades. Where have you been?

Still using a 1940s scope? Gone are those days. Even they were a big improvement on early mechanical scopes.

NT

Like to see one of them.

I saw a mechanical spectrum analyser. (audio of course) This thing had 10 pieces of wood or whatever at the end of equal length springs protruding from a rigid board, each spring a slightly different gauge than the next, or previous.

Last I saw it, it was owned by an outfit named Play It Again Sam in Lakewood, Oho, a purveyor of used hifi audio equipment, much of it vintage.

Bernie (the owner) will not even discuss a price, he intends to die in possession of that thing.

Such ICs are dedicated analog computers that employ log and anti-log circui try.

... Phil

Just a paper chart recorder. I think it managed several hertz.

Or use a speaker & little mirror for the y axis. X axis can be either sig gen + mirror or a motorised scanning mirror. Add a light beam. Frequency response is all over the place, they're not very useful IRL.

NT

snipped-for-privacy@gmail.com wrote in news: snipped-for-privacy@googlegroups.com:

Still mumbling stupid s*it? Here in s.e.d. are those days. Your name appears on a LOT of the posts.

Maybe try less partial sentences.

post again when you're sober

I so wish I could killfile using google groups. There are so many people I would not miss a bit.

Rick C.

snipped-for-privacy@gmail.com wrote in news:ce65c3e2-0e38-414e-a819- snipped-for-privacy@googlegroups.com:

f*ck off and die again the next time you take a breath.

I don't drink, you dippy little bitch.

it didn't happen.

You're doing something that results in you not being sensible at times. You write the resulting unhappiness loud & clear. It's not helping you.

I find a mental killfile works ok. I just decide not to read their posts. Just got to reach the conclusion that it's really not time worth spending. Once every few months I'll read one - they never change.

NT

I've seen something similar, used to monitor power line frequency. It had, I think, seven arms. One read it by looking for the highest amplitude "wiggle").

snipped-for-privacy@gmail.com wrote in news:90187236-f1f8-450d-89df-003c1c66f8f1 @googlegroups.com:

Do not... I repeat, don't try to construct a contraction, you're not very good at it. This is a fail. An apostrophe instead of simply typing the 'i' in 'is'. You be partly dumb, dude.

There. Sound like a better mood?

snipped-for-privacy@gmail.com wrote in news:0a104af8-ab10-4e90-a8b0-7a965c14ed66 @googlegroups.com:

I *could* give a fat flying f*ck what your 'feelings' are, or what other read (but I don't). I also have little faith in your grasp of what others do in pretty much any setting.

Maybe I'll go back to using a newsreader. Then I could killfile this guy. He seems to have successfully sucked all the air from this discussion.

Rick C.

snipped-for-privacy@gmail.com wrote in news: snipped-for-privacy@googlegroups.com:

You're a goddamned idiot. A minute ago (a post ago) you were blaming me for 'sucking the air out'. Sorry, you retarded punk, but IF you HAD read the thread, the discussion was done and over a long time ago. It has just been your petty, retarded observations that linger. Maybe you were friends with Hulk Hogan's son and you want a real-ality TV show. The fact is that you are truly pathetic and post here attempting to make yourself look as if you are blameless. Sorry, but your assholedness is all your fault, child.

One thing I learned a long time ago is that anyone can hurl insults, but something less obscene requires a bit of intellect and learning.

Rick C.