When the JS is set to 1500rpm, and a jumper is wired from 3x INJ pin 19 to Inj 1 on the JS board, the frequency of the led blinking is easily noticable. If a jumper is wired from 3x ign pin 14 to ign 1 on the JS board, the frequency of the led blinking is so high that it is barely noticable at the same 1500 rpm.
Why is this? Seems like at the same rpm, the frequency of the ign and inj inpulses should be the same.
Thanks for your help.
Mike
JS LED question
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racingmini_mtl
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Re: JS LED question
It depends on whether you have both ignition and injection set to full sequential or semi-sequential. There's also the question of duty cycle: is the injection pulse width similar to the dwell time? More duty cycle will make the flashing less obvious. By the way, inverting the ignition output will have a similar effect.
Jean
Jean
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racingmini_mtl
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Re: JS LED question
And I should add that the output circuits are different for injection and ignition on the MS3X. The JS leds were designed to be use with ground switching circuits such as injector and (high current) ignition drivers. The MS3X logic level drivers will create an inverted output because they're designed to provide a 5V pulse and not ground the output.
Jean
Jean