NC30 Tacho Signal Type

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999Gomerz
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NC30 Tacho Signal Type

Post by 999Gomerz » Tue Oct 28, 2014 4:23 am

Hey Guys,

I am wondering if anyone can help me, I have searched and cant find any info.

Does anyone know what the output from the VFR400 CDI for the Tacho is?

And perhaps the scale?

Cheers,
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V4beermonster
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Re: NC30 Tacho Signal Type

Post by V4beermonster » Tue Oct 28, 2014 6:09 pm

Looks like yellow and green on the wiring diagram
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magg
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Re: NC30 Tacho Signal Type

Post by magg » Tue Oct 28, 2014 9:06 pm

If you are referring to the actual waveform I might be able to help, give me a day or two to make a measurement.
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999Gomerz
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Re: NC30 Tacho Signal Type

Post by 999Gomerz » Tue Oct 28, 2014 10:44 pm

Thanks Magg, much appreciated. I don't have a scope to measure it. If you have the scale that would be great too.
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Re: NC30 Tacho Signal Type

Post by CRM » Thu Oct 30, 2014 8:09 pm

Nice one magg
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magg
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Re: NC30 Tacho Signal Type

Post by magg » Thu Oct 30, 2014 10:33 pm

Tacho signal:

+6V pulses fixed at 0.4 mS wide and spaced 4mS between leading edges at 4000 rpm, 3mS at 6000rpm and assumed to continue in same pattern.
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999Gomerz
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Re: NC30 Tacho Signal Type

Post by 999Gomerz » Sat Nov 01, 2014 2:23 am

Thanks Magg that's awesome.
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CRM
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Re: NC30 Tacho Signal Type

Post by CRM » Sat Nov 01, 2014 8:59 pm

magg wrote:Tacho signal:

+6V pulses fixed at 0.4 mS wide and spaced 4mS between leading edges at 4000 rpm, 3mS at 6000rpm and assumed to continue in same pattern.
:worthy:
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999Gomerz
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Re: NC30 Tacho Signal Type

Post by 999Gomerz » Mon Nov 03, 2014 6:30 am

This works out to 4 pulses per revolution for reference.

Thanks again Mag!
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