MSefi.com read only forum (Jan.15,2018)

Hello,
I have a problem with the hall effect sensor (alfa v6). It works fine when the car starts. But on cranking, sync is random. Not enough power from the hall effect sensor.
The signal processing is done with a max9924 with an input capacitor and a resistor to each input.

ps : there is no loss of sync when the car is started

thank you

What wheel type are you using? That is a VR waveform, not a Hall - how do you have it wired?

I have a tipical distributor alfa GTV6 (6cylindre).
- ground : body
- +12 V : input
- and Signal to the MS and the MAX9924
In the images above, we see a test with the reverse sensor.
This is a problem of signal acquisiton before MAX9924 because when I do not I do not sync signal output from MAX9924.
I think the sensor voltage is not high enough to craking. Moreover, there is an offset.

I do not have the solution.
thank you