3.2 Inputs 3 MS3PRO HARDWARE
3.2.7 Knock input
The MS3Pro employs a DSP based knock sensor interface chip. This can use either one or two knock sensors,
and incorporates a built in, software adjustable bandpass filter. The interface allows you to adjust the triggering
threshold as a function of RPM and detect knock only at specific crank angles so as to filter out noise occurring
when the piston is in a position where it can’t possibly be detonating. The MS3Pro supports cylinder by cylinder
knock detection and can identify which cylinder is knocking by crank angle.
3.2.8 Digital I/O channels
These use an on/off switch to ground to trigger the digital switched inputs.or the digital I/O channels. The Digital
Switched 12V In line is triggered by 12 volts instead. There are also three digital frequency inputs capable of
receiving high frequency signals, which can be used for speed inputs, frequency based MAF or MAP sensors, or
a number of other functions.
Digital frequency inputs have a cutoff frequency of 160 kHz. The cutoff frequency on digital switched inputs is
16 kHz.
3.2.9 Barometric pressure input
The MS3Pro Ultimate has a built in MPX4115 barometric pressure sensor. The “vent” is designed to allow pressure
in the case to match the outside air pressure while maintaining a leakproof seal.
AMP EFI MS3ProUltimate manual version 1.203, firmware 1.5.0, 5/23/2017 Page 26
To Next Page
Loading...