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Author Topic: Spikes on Waveform (Drivertest  (Read 2786 times)

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Spikes on Waveform (Drivertest
« on: May 07, 2013, 12:45:26 PM »
Hi gentlemen.
Could you give me a comment on it?

I installed Mach3 and ran drivertest.
Attached are results.
There are many spikes on 25k and smaller spikes on 35k.
I got this waveform after optimization on XP.
Is this normal(or proper) waveform to use?


Offline Hood

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Re: Spikes on Waveform (Drivertest
« Reply #1 on: May 08, 2013, 02:45:45 AM »
These are not very good although at least they are consistent which may help things. Ideally the line should be totally flat with no, or very little, disturbances.
The only way to know for sure how it will affect things is to try it.
Re: Spikes on Waveform (Drivertest
« Reply #2 on: May 08, 2013, 04:54:42 AM »
Thank you for your opinion Hood and sorry.
I mispasted the one before optimization. :-[
This is the one I gonna paste first.

Anyway, your first opinion may help me detect the present malfunction.
Further opinion is seriously appreciated.

Re: Spikes on Waveform (Drivertest
« Reply #3 on: May 27, 2013, 09:03:29 AM »
I post in this topic because I have the same problem with a desktop PC. I istalled only winXP and mach3, but i have a lot of jitter in clock generation. Drivertest give me a result similar the result postet in the first post of Rasgueado. With 25KHz clock i have a shortest time of 36us, and longest time of 49 us. Testing mach3 with motors i have a very bad running.
Jitter in driverpulse result are not random, but they appear very regular.

PC sould be good for mach3 specific. It's a pentium dual 1600 MHz, with 1 GB of ram...

For comparison i run drivertest in other 2 desktop PC and in one laptop PC where i have mach3, and i have a very good result (only the laptop have very little jitter).
I try al the optimization suggest, but without improvement.

What can i do?

Offline ger21

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Re: Spikes on Waveform (Drivertest
« Reply #4 on: May 27, 2013, 10:04:29 AM »
Check the bios for C1E or EIST and disable them if you can.

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