Erratic Tacho Signal

cured5.7 · **Joined:** Tue Nov 03, 2009 5:46 pm **Posts:** 43

I posted earlier about having a tacho signal that is erratic,
i cant find the thread for some reason, but no matter.

What i have is in Studio and on the unit, the tacho signal is generally smooth, but i get high spikes to 12000rpm for a V8!!!

Also in studio it shows the spike and also alot of negative spikes,

I have hooked up to the neg coil, direct method

Also it shows the spikes in the new version as well.

Any ideas?

Mark

Joel@XT · **Joined:** Mon Oct 05, 2009 12:38 pm **Posts:** 56

There is probably some "kickback" on the coil input that is a long-enough pulse that it is being interpreted as another pulse by the GPX.

Can you, when you have a chance, send the gpstudio.dat or xtstudio.dat file to support@xtracing.com and I will take a look at it -- it might help.

cured5.7 · **Joined:** Tue Nov 03, 2009 5:46 pm **Posts:** 43

Just checking the progress of this issue,

any luck Guys?
Data sent ages ago.

Mark

Joel@XT · **Joined:** Mon Oct 05, 2009 12:38 pm **Posts:** 56

Still looking into those spikes. No resolution yet.

cured5.7 · **Joined:** Tue Nov 03, 2009 5:46 pm **Posts:** 43

ok Thanks,

cured5.7 · **Joined:** Tue Nov 03, 2009 5:46 pm **Posts:** 43

Hi Guys,

Just checking to see where we are at with these spikes.

Any luck

mark

Joel@XT · **Joined:** Mon Oct 05, 2009 12:38 pm **Posts:** 56

We've tested a few types of filtering so far but we are not happy with the results. We will keep working on it as time permits.

Erratic Tacho Signal

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