Haltech E6A - Manual (Page 40)

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Trigger Edge : This field determines whether the E6A is to trigger on a rising or a falling
edge. Refer to Appendix E - Trigger Interface for details on how to determine this
setting. If a Reluctor Adapter is being used, this field should be set to Falling.
Output Type: This field is used to determine how the ignition output signal is to be defined.
Constant Duty should only be used with the Haltech Ignition Module or other
“intelligent” igniters and special aftermarket systems that perform dwell control.
Constant Charge may be selected if the igniter operates simply as a switch (ie a “dumb”
igniter) and requires a dwell signal.
Coil Charge Time: Only required if Constant Charge selected as Output Type. This is the
time require to charge the coil fully, or until the igniter’s current limit is reached,
typically 4-5 ms. Refer to Appendix E for additional information.
Coil Break Time: Only required if Constant Charge selected as Output Type. This is the
minimum time the E6A should allow before the coil is switched on again, usually 1-2
ms. Coil Break Time defines the ignition output signal when there is insufficient time to
charge the coil fully. refer to Appendix E for additional information.
Output Edge: The Output Edge should be falling with a 30% switch when using a Haltech
igniter as supplied with the E6A kit (This is the default setting). If you are using any
other igniter, refer to Appendix E [E.4] for details on how to set this field for the
igniter used.
In Advanced Mode, several other fields are available. Some of them are fairly complex and
should not be changed unless you are totally familiar with their operation. Consult Appendix
B - The Advanced Features, to familiarise yourself with their functions. The Advanced Mode
fields are :
Trigger Type : There are three settings for this field :
The Standard trigger sends one trigger to the ECU for each spark event. On a V8, for
instance, there are 4 firing strokes for each revolution and, therefore, the E6A would be
expecting 4 triggers each revolution. These triggers should occur between 60 - 100°
BTDC (as described under Trigger Degrees above) and can be generated by either a
crank angle sensor or cam angle sensor in a distributor.
A Multitooth trigger has multiple triggers for each ignition event. The number of teeth
must be a multiple of the number of cylinders. For instance, on a V8 for each engine
cycle (2 revolutions) you would expect there to be 8, 16, 24, 32 etc. The ECU needs to
know if this is the type of trigger being used or else too many sparks and fuel pulses
will be delivered. A multitooth trigger also requires a Synchronisation Event (usually a
Home Trigger) to give the ECU a reference to its position. For more information on
Synchronisation Events consult Appendix E [E.3]. For multitooth triggers, consult
Appendix B - The Advanced Features.
A variation on the multitooth trigger is the Motronic trigger. This setting is designed to
be compatible with the trigger wheel used for Bosch Motronic controlled engines.