What are 6.5 Digit Multimeters Good For?
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From: Michael A. Terrell on 13 Mar 2010 20:19 Dave Platt wrote: > > In article <4B9AE570.8B9E88(a)earthlink.net>, > Michael A. Terrell <mike.terrell(a)earthlink.net> wrote: > > >> I pointed out that if one were to set the playback amplitude so that a > >> least-significant-bit signal produced audio at the listening position > >> equal in power to the random thermal noise of air molecules hitting > >> the eardrum, a full-scale 32-bit signal would vaporize the power > >> lines, explode the building and kill the listener :-) > > > > > > Yes, but what's the downside of letting one more audiophool eliminate > >themselves from the genepool? > > I have reservations about the amount of collateral damage which can > occur. Some of the neighbors might be nice, sensible people... and > innocent kittens might be hurt in the explosion, as well :-) How else will it make the news? ;-) -- Lead free solder is Belgium's version of 'Hold my beer and watch this!'
From: Archimedes' Lever on 13 Mar 2010 20:26 On Sun, 14 Mar 2010 00:36:08 GMT, Jan Panteltje <pNaonStpealmtje(a)yahoo.com> wrote: >On a sunny day (Sat, 13 Mar 2010 08:13:20 -0600) it happened John Fields ><jfields(a)austininstruments.com> wrote in ><l37np519aum4a3r6n9aetaona9ij7hesm7(a)4ax.com>: > >>On Sat, 13 Mar 2010 13:27:35 GMT, Jan Panteltje >><pNaonStpealmtje(a)yahoo.com> wrote: >> >>>On a sunny day (Fri, 12 Mar 2010 13:00:04 -0800) it happened D from BC >>><myrealaddress(a)comic.com> wrote in <MPG.26044b27299d843e9896f7(a)209.197.12.12>: >>> >>>>In article <hne8fg$uqm$1(a)news.albasani.net>, pNaonStpealmtje(a)yahoo.com >>>>says... >>>>> >>>>> On a sunny day (Fri, 12 Mar 2010 10:50:48 -0600) it happened John Fields >>>>> <jfields(a)austininstruments.com> wrote in >>>>> <ekrkp5lg8obtcmftn2tmq8adsnlte9u59e(a)4ax.com>: >>>>> >>>>> >On Fri, 12 Mar 2010 12:30:31 GMT, Jan Panteltje >>>>> ><pNaonStpealmtje(a)yahoo.com> wrote: >>>>> > >>>>> >>On a sunny day (Thu, 11 Mar 2010 17:56:35 -0800) it happened D from BC >>>>> >><myrealaddress(a)comic.com> wrote in <MPG.26033f321480b139896e5(a)209.197.12.12>: >>>>> >> >>>>> >>>6.5 digit multimeters sell around $1000.00. >>>>> >>>For electronics development, are these $1000 multimeters really >>>>> >>>necessary? >>>>> >>>What are they good for? >>>>> >> >>>>> >>They are not needed, all you need is a 5 Euro multimeter, >>>>> >>and in extreme cases a precise reference. >>>>> >>That means if you use one of those reference chips, you borrow >>>>> >>the very accurate multimeter for a day, measure your reference chip, >>>>> >>write it down, and use that to calibrate your cheap multimeter, >>>>> >>or o compute it's real value, >>>>> >>Saved: 1000$ >>>>> > >>>>> >--- >>>>> >If you don't _need_ the accurate multimeter, then how do you get around >>>>> >the fact that unless you use _it_ to measure the reference, your cheap >>>>> >multimeter is pretty much a boat anchor? >>>>> > >>>>> > >>>>> >JF >>>>> >>>>> Sorry can you explain that again in electronics English? >>>> >>>>He means you still need an accurate tool to make use of a less accurate >>>>tool. Which raises the question, why have the less accurate tool? >>>> >>>>btw... Boat anchor is a term I sometimes use for large heavy antiqued >>>>test equipment. >>>>Pre LCD scopes are boat anchors. >>> >>>Yes, OK, but Fields did not read very well, >>>you only need the accurate one ONCE. >>>And that means you can go to a place and have yor reference measured. >> >>--- >>You seem to be the one having trouble with the language since even if >>it's used only once, you still _need_ the higher accuracy instrument in >>order to determine the error in the lower accuracy one. >> >>JF > >No you do not, how do you think those instruments came about? >In your theory nothing could ever be made. >:-) Ohms law was not a guess, idiot. It is what it is all the time, without err. All the elements that make it up can be arrived at and proven via other observations of the physical realm, not just with a volt/ohm meter.
From: Michael A. Terrell on 13 Mar 2010 20:30 Jan Panteltje wrote: > > You do not need a wife at all, you can have yourself cloned. > Just imgine 2 of you having an argument ;-) You already do that. -- Lead free solder is Belgium's version of 'Hold my beer and watch this!'
From: Michael A. Terrell on 13 Mar 2010 20:31 John Fields wrote: > > On Sat, 13 Mar 2010 13:23:56 GMT, Jan Panteltje > <pNaonStpealmtje(a)yahoo.com> wrote: > > >On a sunny day (Fri, 12 Mar 2010 15:31:33 -0600) it happened John Fields > ><jfields(a)austininstruments.com> wrote in > ><a3blp59kk10s93orbunu7mg8s921d1t56f(a)4ax.com>: > > > >>On Fri, 12 Mar 2010 20:33:42 GMT, Jan Panteltje > >><pNaonStpealmtje(a)yahoo.com> wrote: > >> > >>>On a sunny day (Fri, 12 Mar 2010 10:50:48 -0600) it happened John Fields > >>><jfields(a)austininstruments.com> wrote in > >>><ekrkp5lg8obtcmftn2tmq8adsnlte9u59e(a)4ax.com>: > >>> > >>>>On Fri, 12 Mar 2010 12:30:31 GMT, Jan Panteltje > >>>><pNaonStpealmtje(a)yahoo.com> wrote: > >>>> > >>>>>On a sunny day (Thu, 11 Mar 2010 17:56:35 -0800) it happened D from BC > >>>>><myrealaddress(a)comic.com> wrote in <MPG.26033f321480b139896e5(a)209.197.12.12>: > >>>>> > >>>>>>6.5 digit multimeters sell around $1000.00. > >>>>>>For electronics development, are these $1000 multimeters really > >>>>>>necessary? > >>>>>>What are they good for? > >>>>> > >>>>>They are not needed, all you need is a 5 Euro multimeter, > >>>>>and in extreme cases a precise reference. > >>>>>That means if you use one of those reference chips, you borrow > >>>>>the very accurate multimeter for a day, measure your reference chip, > >>>>>write it down, and use that to calibrate your cheap multimeter, > >>>>>or o compute it's real value, > >>>>>Saved: 1000$ > >>>> > >>>>--- > >>>>If you don't _need_ the accurate multimeter, then how do you get around > >>>>the fact that unless you use _it_ to measure the reference, your cheap > >>>>multimeter is pretty much a boat anchor? > >>>> > >>>> > >>>>JF > >>> > >>>Sorry can you explain that again in electronics English? > >> > >>--- > >>If you can't understand it in plain English, what makes you think you'll > >>be any less confused in "electronics English", whatever that may be? > >> > >>The point I was making was that your statement that 6.5 digit > >>multimeters aren't needed is wrong, since without one you wouldn't be > >>able to determine the accuracy of the cheap multimeter. > >> > >> > >>JF > > > >I know a guy who was actually a technican, he started studying philoosphy. > >He showed mw one of his books. > >To make a long story short: Philosophy is not for me. > > --- > The book had an ugly cover? A mirror? -- Lead free solder is Belgium's version of 'Hold my beer and watch this!'
From: Michael A. Terrell on 13 Mar 2010 20:35
Jan Panteltje wrote: > > Well, I dunno, I have met people who first thing wanted to stuff the lab with lots of super expensive stuff. > Sort of an ego trip. > It impresses customers perhaps, but not me. Or dimbulb. -- Lead free solder is Belgium's version of 'Hold my beer and watch this!' |