Typical applications – Haltech F10 User Manual
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Switch 3 – Pull to Ground
This switch adds a 4.7kΩ pull to ground opposing the Pull-Up 2 resistor.
Switch 4 – Filter Capacitor 1
This switch adds a 0.1uF filter capacitor to the input of the trigger circuit.
Switch 5 – Filter Capacitor 2
This switch adds a 0.001uF filter capacitor to the input of the trigger circuit after series
impedance.
Switch 6 – Resistor Bypass
This switch applies a short circuit across a 4.7kΩ series resistance on the input of the
trigger circuit.
Switch 7 – Input Impedance
This switch allows the user to set the input protection impedance to either low ore
high. High is used in coil negative applications where low is used for Hall Effect or
optical digital trigger applications.
Switch 8 – Input Threshold
This switch controls the threshold voltage at which the trigger circuit will switch state.
Typical Applications
Software Switches
Trigger Type
1 2 3 4 5 6 7 8
Haltech S1/S3,S2/S4 Hall
Effect Sensor
2
2
2
2
3
3
3
3
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
LOW 3.4V
Ignition Coil Negative
terminal
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
HIGH 3.4V
Driven 12V square wave
(some tacho output
signals)
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
HIGH 3.4V
3
3
3
3
= On 2
2
2
2
= Off