Haltech IG5 User Manual

Page 29

Multi-tooth This trigger pattern is the same as that for the Standard Trigger except that
there are multiple trigger events for each spark event. The number of teeth for a
multitooth trigger must be a multiple of the spark events. This trigger requires a home
signal for synchronisation of the trigger and engine position.

Motronic This trigger is a variation of the multitooth trigger pattern. This setting is
compatible with the BOSCH Motronic controlled engines. The Motronic wheel has
multiple teeth with a set number of teeth missing for synchronization removing the
need for a separate home signal. The BOSCH Motronic wheel usually has 60 teeth
positions with 58 teeth and 2 missing teeth.

Twin Trigger This trigger is used in conjunction with twin distributor ignition
systems. Since it is a distributed system there is no requirement for a home signal so
this channel is used to carry the second trigger.

Number of Teeth

This field is only applicable if the trigger type is Multitooth or Motronic. The Number
of teeth:
Multitooth The number of teeth on the multitooth wheel

Motronic The number of teeth on the motronic wheel including the missing teeth

Tooth Offset

This field is only applicable if the trigger type is Multitooth or Motronic. The offset is
the number of teeth the synchronisation event occurs prior to the trigger

Home Edge

This field is similar to Trigger Edge it defines the active edge for the Home channel.
If a reluctor adaptor is being used this field should be set to falling.

Spark Mode

This field defines the ignition delivery used, the options are: Distributor, Direct Fire or
Twin Distributor.

Coils on 4-cylinder motor

This field is only applicable if the spark mode is Direct Fire and the number of
cylinders in the main set-up is “4”. The options for this field are: “2” or “4”. If “2”
is selected waste spark is used. If “4” is selected there is one coil for each cylinder.

Engine Type

This field defines the engine type: Piston or Rotary.