coil on plug probe

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coil on plug probe

Postby davideakins » Sun Sep 02, 2007 4:52 pm

hi i am not sure how to get the best results from this bit of kit.
how to set up , ie do i just use 1 channel ?.
no trigger sorce,can anyone help thanks
david eakins
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Postby davidj » Mon Sep 03, 2007 3:56 pm

Hi David

Use the Automotive preset for ignition, secondary, plug lead to get you started. The thing about pencil coils is that the field strength varys a bit from type to type. This is one reason we didn't do a preset for this probe but we may revise this before long as we get data on a few more coil types.
If no joy with the above preset, remember the probe will be picking up approx 100-200mV so set the DC scale to +/- 200mV or thereabouts. You can set a trigger to stabilise the waveform. At idle, 1mS/div should give a detailed picture of a single full ignition waveform. 20mS/div will show hopefully 2 events i.e a full engine cycle taking approx 160mS on a 4 cylinder.

See how you get on and get back to me if not sure about anything.
Regards,
David
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