Advanced options: noise filter settings – AEM 30-71XX Infinity Stand-Alone Programmable Engine Mangement System Full Manual User Manual
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© 2014 AEM Performance Electronics
Infinity User Manual
Advanced Options: Noise Filter Settings
Bandpass Center Frequency
Units: kHz
Description: The raw voltage from the knock sensor is sent through a software-adjustable
filter chip before being measure by the ECU. It is assumed that the frequencies above or
below this Center Frequency represents mostly noise and should be filtered out.
Amplifier Gain
Units: Scalar
Description: This is a tuner preference and is used to scale the knock sensor signal
input(s). Depending on the knock sensor type, some output larger signals. This gain
channel should be adjusted so that the Knock_X_raw channels are low when the engine is
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