Author Topic: Tachometer Output - Divider Question  (Read 5662 times)

Offline Slow_Audi

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Tachometer Output - Divider Question
« on: September 08, 2020, 05:48:09 pm »
What should the tachometer divider be for a 36-1 crank wheel? Having trouble understanding the tachometer divider. I'm sure I could dial it in with my scope and guesswork but it would be preferable to understand the theory. Thanks in advance.

Offline Kamuto

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Re: Tachometer Output - Divider Question
« Reply #1 on: September 11, 2020, 12:51:08 am »
no, your trigger have no relation with tacho pulses, only cylinder number does
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Offline Slow_Audi

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Re: Tachometer Output - Divider Question
« Reply #2 on: September 17, 2020, 10:56:27 pm »
Thanks, I've been trying to 'backwards engineer' numbers but nothing makes sense. What do these numbers mean in the divider area? Are they call out for a script or are they the actual integer involved in the math?

Offline jrussell

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Re: Tachometer Output - Divider Question
« Reply #3 on: December 04, 2020, 07:36:43 pm »
A divider of 16 is 1:1 mapping. 1 pulse per revolution. That allows adjustment up or down if you need to do something weird such as use a 8cyl tach on a 4cyl engine, etc.
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