Am Sun, 09 Sep 2012 02:40:23 +0200 schrieb Magnus Danielson <[email protected]>:
> Hi Florian, > > On 09/08/2012 07:34 PM, Florian Teply wrote: > > The idea I have right now is employing something on the order of > > three to five comparators per output, fed with different trigger > > levels. That way I should be able to get some information on the > > transient shape as well. But then I'll have to throw a few hundred > > Time Interval Counters at the problem in order to get the > > information on the duration of the transients. So in general, > > amplitude information comes from the comparator trigger levels, > > time information from the TICs. > > > > What I expect from the DUTs is transients in the range between 1 and > > maybe 50 nanoseconds duration, but on some circuits they may be a > > lot quicker as the bipolars are wicked fast (about 3-5 ps gate > > delay in ECL inverters). > > > > What do you guys think, would a truckload of TICs do the job? Maybe > > not on the Bipolars, but at the plain CMOS this should do. > > > > Any hints? > > Check out Agilents Acquiris products, in particular the U1050A-002: > http://www.home.agilent.com/agilent/product.jspx?nid=-536902438.733419.00&cc=SE&lc=eng > This indeed is interesting. Now I can at least put some price tag to the setup I had in mind. The unit you refer to goes for a bit more than 10k for 12 channels, so including a cPCI crate I'd have to find some 80k$ for all the outputs of a single chip. There I'll definitely have to trade channels for measurement time, as I'll probably use 8 to 10 hours of beam time per run, going at 600-800 euros/h. So it'll be definitely less expensive to just test one chip at a time... Apart from that, I'll also check with ACAM in Germany as they have ready-made chips that would do that, and 65 to 120 ps RMS accuracy is okay for the CMOS stuff. Maybe they sell their chips for only a few hundred euros each... ;-) Best regards, Florian _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
