Inputs/Outputs – ASO1 (Auxiliary Synchronization Output)
Figure: Inputs/Outputs – ASO1
With the auxiliary synchronization output, freely definable impulses depending on the angle of the crankshaft can be generated. For the output, the user defines whether the angle will be absolute or based on the global timing. The output can generate between 1 and 20 impulses and only be assigned to one system at a time. One example of the application of the ASO output for a detonation controller can be found in section ASO: Auxiliary Synchronization Output.
- No. of Points
Select the number of impulses from the No. of Points list. Please note that the DetCon detonation controller devices require a single impulse with 200 µs synchronous with the first cylinder in the ignition sequence. You can get this setting via the button Configure for DetCon2/20. - Angle Reference
Select from the Angle Reference drop-down list whether the angle shall be based on the absolute angle of the crankshaft or the actual angle depending on global timing. Then, enter the trigger angle for each impulse and the length of the impulse in µs. This setting also determines when ASO signals are generated. For this, also read the information box ASO signals depending on the ignition release. - Mode
Select the mode for the ASO signal.
In the default setting Trailing Rising Edge (default), the signal is low-active.
In the setting Trailing Falling Edge (inverted), the signal is high-active.

* ) active edge marks the configured engine rotation angle

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Maximum impulse duration
Please note that the duration of the impulse can be entered as max. 300 µs. Input of higher values will not be accepted by the system.
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ASO signals depending on the ignition release
The setting in the drop down list Angle Reference determines when ASO signals are generated:
- Actual Angles Depending on Global Timing
ASO pulses are only transmitted if ignition is active, indicated by the green status display Firing Active in the window Runtime Data – Overview. - Absolute Timing
ASO pulses are generated independently of the ignition release as soon as the synchronization of the pickups is accomplished.
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