The other reason the price is so high is that the cost of entry for a competitor to develop and sell a comparable unit for such low sales volume would also cost that much if not more. The Fluke 8508 does cost more but it is a 3458A "under the hood".
On Mon, Jan 20, 2014 at 3:09 PM, Frank Stellmach <frank.stellm...@freenet.de > wrote: > "3. The 3458A still has got the best linear A/D, around 0.02ppm of input." >>> >> > Is that a typo? Even 0.2 ppm would seem extremely good. I think I saw an >> official number of 0.1ppm somewhere. Probably 0.1ppm of range. And how do >> they implement that? Manual trimming and compensation? >> > > Hello Jan, > > well DNL, INL, sometimes I still struggle with those terms.. > > Those 0.02ppm were nonlinearity of input, measured with a JJ array. > And they use a special multiple slope scheme, with glitch compensation for > the switching FETs. > > Just download the April 1989 HP Journal, there's everything explained in > detail. > > http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1989-04.pdf > > > Frank > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. > -- John Phillips _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
