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. Thats why I hoped such a hardware solution would solve this Op 5 maart 2012 00:42 heeft Jon Elson <[email protected]> het volgende geschreven: > Bart Libert (EducaSoft) wrote: >> Dear guys (and possibly girls, why not) >> >> I have a question which may sound quite newbie, but I can assure I'm >> not newbie at all (just newbie in this matter :) >> >> I am currently building a laser cutter machine and for that I will >> need to be able to output pulses between 25kHz and 50kHz (50kHz would >> be the max but would be nice to be achievable) >> >> Now I tried this with EMC on a very high end machine I have here (A >> Dual Xeon quadcore machine on a serverboard) and emc is aproximately >> capable of doing it. >> > Mesa and Pico Systems (me) have boards that generate step pulses and/or > pulse width modulated pulses in hardware. The Pico Systems Universal > Stepper Controller can generate up to 300,000 steps/second on each > of 4 axes simultaneously. The timing of the steps is programmed (by > LinuxCNC) in 100 ns increments, so at 50,000 steps/sec (50 KHz) > you have a granularity of 1/2 %. Using software to generate step > pulses, the granularity will be vastly higher, and this can lead to > stalls of stepping motors. By relieving the computer of the load > of making each step pulse, even a very low-performance computer > plus the step generator board can run rings around your $4K machine. > > See > http://pico-systems.com/osc2.5/catalog/product_info.php?cPath=4&products_id=30 > for more info. > > Jon > > ------------------------------------------------------------------------------ > Virtualization & Cloud Management Using Capacity Planning > Cloud computing makes use of virtualization - but cloud computing > also focuses on allowing computing to be delivered as a service. > http://www.accelacomm.com/jaw/sfnl/114/51521223/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
