On 4 March 2012 23:49, Bart Libert (EducaSoft) <educas...@gmail.com> wrote: > and doesn't it make a problem then that my pc has a maximum jitter of > around 45000 ? > > My expensive one seems to be lucky as he stays very low in jitter, but > the cheap ones I have go upto 45000 in jitter.
You are making the false assumption that the differing performance of the two machines is related to their price, whereas it is completely unconnected. One of the very best performers for latency with LinuxCNC is the Intel D525MW motherboard, and that is about $80 (processor included). This has a jitter well under 10,000nS (and can be tweaked to <5000). I think that you could achieve your stated requirements with one of these boards and the onboard parallel port. However, I would suggest that the Pico USC (if you have a PC with an EPP-capable parallel port) or Mesa 5i25 mated to the 7i76 interface board (if you have an available PCI slot) would give you a more capable and flexible system. However, I would still be suggesting the D525 motherboard, as it is a known-good board, with EPP-capable port in a small form factor. Just mount it in the same box as all the other components and treat it as yet another part of the system, and not a PC. -- atp The idea that there is no such thing as objective truth is, quite simply, wrong. ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
