Ignition Amplifier with rising edge trigger

Discuss which Sensors work best with these ECUs and share how you are using inputs and outputs
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cooberpedy
Posts: 17
Joined: Wed Sep 28, 2016 11:42 am
ECU Model: S100 Pro
Firmware Version: 89.00
Location: Germany

Ignition Amplifier with rising edge trigger

Post by cooberpedy »

Hi all,
my ignition amplifiers have rising edge on the trigger instead of the common falling edge.
Is there an option in software where I can select the ignition trigger edge on S100?
Alex DTA
Posts: 1499
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: Ignition Amplifier with rising edge trigger

Post by Alex DTA »

Yes, tick Externally Amplified Coils, that will invert the signal.

Is there a reason you want to keep the amplifiers? The ECU can probably drive the coils directly (unless they are CDI). One less failure point.
cooberpedy
Posts: 17
Joined: Wed Sep 28, 2016 11:42 am
ECU Model: S100 Pro
Firmware Version: 89.00
Location: Germany

Re: Ignition Amplifier with rising edge trigger

Post by cooberpedy »

Yes, good point.
Initially, my plan was to reuse the built in knock- / missfire detection of the amplifier units. But I'm not sure if I can get it to work.....as these ion-sensing units are quite comlex ;) :roll:
stevieturbo
Posts: 3286
Joined: Tue Aug 02, 2011 12:08 pm
ECU Model: No ECU
Location: Norn Iron

Re: Ignition Amplifier with rising edge trigger

Post by stevieturbo »

I'm not aware of any aftermarket ecu that uses the ion sensing of the old Saab coils
cooberpedy
Posts: 17
Joined: Wed Sep 28, 2016 11:42 am
ECU Model: S100 Pro
Firmware Version: 89.00
Location: Germany

Re: Ignition Amplifier with rising edge trigger

Post by cooberpedy »

agree, so my plan was to hook up my own controller along with the S100 to the ion sensing amplifiers along with the S100 and see if I can get it to work, not in closed loop, as this would require a special "retard on knock" input for the S100, but at least for tuning or diagnosis. I'm using BMW S85 units.
Alex DTA
Posts: 1499
Joined: Fri Feb 28, 2014 1:03 pm
ECU Model: S40 Pro
Distributor: DTA
Firmware Version: 79

Re: Ignition Amplifier with rising edge trigger

Post by Alex DTA »

If your controller can output a 0 - 5V output, you can input that in to one of the analogues and pull timing that way.
cooberpedy
Posts: 17
Joined: Wed Sep 28, 2016 11:42 am
ECU Model: S100 Pro
Firmware Version: 89.00
Location: Germany

Re: Ignition Amplifier with rising edge trigger

Post by cooberpedy »

Whats the sampling rate of the ANA inputs? If they are fast enough it could work.
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