Haltech E6GMX - Manual (Page 97)

E6GMX Manual
97
Ignition Spark Edge
The ignition “Spark Edge” in the Haltech software sets the natural state of the ignition
waveform. Spark Edge can be configured as Falling or Rising.
Falling Edge Triggered – Most factory ignition modules are falling edge triggered. These
modules expect a naturally low input voltage. When the voltage rises to 12V, the coil is being
charged. When the input voltage returns to 0V, a spark is fired and the coil sits idle until the
input voltage to the ignition module is again raised to 12V.
Rising Edge Triggered – Some CDI style ignition modules are known to be rising edge
triggered. These modules expect to see a naturally high signal. When the voltage falls to 0V,
the module charges the coil. When the voltage returns to 12V, the spark is fired.
GND
+12V
Time
Voltage
Waveform
Naturally Low
GND
+12V
Time
Voltage
Trigger event
Rises to 12V
Trigger event
drops to 0V
Waveform
Naturally High