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SMT6 Developers Manual - One Ignition Input Signal

SMT6 DEVELOPERS MANUAL

Perfect Power Online Manuals.

 

Support for your SMT6 Unit.

ONE IGNITION INPUT SIGNAL

In SMT6 MODE=10, 11 and 12 and 13

 

IG1IN YELLOW Pin 8
IG1OUT WHITE Pin 20

 

These are the prime ignition (CB1) input and output signals. The input trigger level (See RPM Deflection) and input and output polarity can be specified.

 

The IG1IN signal serves as a map deflection input, and it requires that the signal repeats every engine turn.

 

The output is affected by :

  • Cylinders
  • Teeth Per Firing
  • Input Polarity
  • Output Polarity
  • Interlaced

 

At RPM position zero (bottom map row) the output signal is copied from the input, and no timing is applied. This allows the changing of input and output polarity, until the engine starts and runs. At this point the RPM indication should be correct.

 

The BIPOLAR (MAGN) INP parameter is active, but does not change the output drastically; it only changes the input trigger level.


Ign Input : Polarity   SMT Mode = 10

 

SMT6 - One Ignition Input Signal

Ign Input : Polarity 1  SMT Mode = 10

 

SMT6 - One Ignition Input Signal

 

It is obvious from the above that in input and output edge combination is chosen from the one that does not have the "flutter" at the firing edge (trigger edge).