Detonation Monitor

Sat May 26 21:47:08 GMT 2001

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Hello=20

My Nissan runs two detonation microphones that are linked into the ECU.

I would like to monitor the microphones to see if they are receiving =
signals that are at the detonation frequency.

I believe that the frequency of most of the noise can be calculated from =
the bore diameter and should therefore be avoided.

Is there an aftermarket device that can be built / purchased that will =
allow you to select the right frequency to pick up detonation?

Thanks=20

Hugh

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<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 5.50.4134.600" name=3DGENERATOR>
<STYLE></STYLE>
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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DVerdana size=3D2>Hello </FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT><FONT face=3DVerdana=20
size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DVerdana size=3D2>My Nissan runs two detonation =
microphones that=20
are linked into the ECU.</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DVerdana size=3D2>I would like to monitor the =
microphones to see if=20
they are receiving signals that are at the detonation =
frequency.</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DVerdana size=3D2>I believe that the frequency of most =
of the noise=20
can be calculated from the bore diameter and should therefore be=20
avoided.</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DVerdana size=3D2>Is there an aftermarket device that =
can be built=20
/ purchased that will allow you to select the right frequency to pick up =

detonation?</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DVerdana size=3D2>Thanks </FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DVerdana size=3D2>Hugh</FONT></DIV></BODY></HTML>

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