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Topic: Electrickery - VSS signal understand required (Read 1023 times) |
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hoylegj
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Electrickery - VSS signal understand required
« on: May 7th, 2016, 1:29pm » |
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Hi,
I have a 98 24V Scorpio and trying to understand the VSS signal. My understanding so far is that is a square wave, 2.2hz per MPH per Sec, but I can't find the min-peak voltage. I've seen two outputs discussed, 0-5v and 0-14v, that's a fair difference 
Would any one please know. I'm trying to design a bit of circuit to attach to it.
Many thanks
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Snoopy
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Very old.BAD tempered and missing friends.
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Re: Electrickery - VSS signal understand required
« Reply #1 on: May 8th, 2016, 8:40am » |
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Try searching on the MAIN web pages for " Lock on Go" I seem to remember an article describing the signals you mention.
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ADroste
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S-Type 2.7D SE 2008 replaced Scorpio 2.3 Ult.1998
Posts: 598
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Re: Electrickery - VSS signal understand required
« Reply #3 on: May 8th, 2016, 1:00pm » |
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on May 7th, 2016, 1:29pm, hoylegj wrote:| ... two outputs discussed, 0-5v and 0-14v, that's a fair difference ... |
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But actually it is not really a problem for rectangular signals. For car electronics in any case you need to add a limitation input stage for protection purpose. (positive and negative)
If you need the higher voltage, just add a transistor inverter stage.
Regards
Armin
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