On Tue, 15 Sep 2015 16:30:59 +0200 Xavier Bestel <[email protected]> wrote:
> I'd like to do some PPS comparisons on an SBC (like a Beaglebone or RPi) > using a TDC. So far the ones I've seen which could be suitable are > ACAM's TDC-GPX and TI's THS788: > http://www.acam.de/fileadmin/Download/pdf/English/DB_GPX_e.pdf > http://www.ti.com/lit/ds/symlink/ths788.pdf > However these chips don't look so simple to connect to a standard SBC. > Would anyone of you already have attempted that journey, or simply have > a reasonably good idea about how to do that ? Why don't they connect easily to SBCs? (beside, is there such a thing as a standard SBC?) Yes, they both use differential inputs (for obvious reasons) but this easy to solve with a single gate. Alternatively you can try the PICTIC-II [1] which you can extend to do more than just timestamping and to multiple ports. For this application it should be precise/accurate enough. Attila Kinali [1] http://www.ko4bb.com/dokuwiki/doku.php?id=precision_timing:pictic -- It is upon moral qualities that a society is ultimately founded. All the prosperity and technological sophistication in the world is of no use without that foundation. -- Miss Matheson, The Diamond Age, Neil Stephenson _______________________________________________ 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.
