LT1 (93+) Ignitions

[Kurek, Larry]

The high resolution is a 360 pulse per cam rotation signal, while the low
resolution pulse is a eight pulse per cam revolution signal. The high
resolution is a simple square wave, with identical on/off duty, while the
low resolution has different on times for each pulse (again, square),
telling the PCM which cylinder is currently being fired.

TTYL!

Larry

> -----Original Message-----
> From: Bruce Plecan [mailto:nacelp at bright.net]
> Sent: Wednesday, February 10, 1999 1:58 PM
> To: DIY_EFI
> Subject: LT1 (93+) Ignitions
> 
> 
> Anybody got any clues, or knowlege about what kind of signals
> (Pattern+Voltage) one might expect to see on Distrib low reference,
> Distributor ignition feed, Hi Resolution signal, low 
> resolution signal,
> Ignition control?....
>   This is for the front mounted distributor.
> TIA
> Bruce
>