AiM EVO4 User Manual
Page 14
CHAPTER 5
THE RPM CHANNEL
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In order to properly configure EVO4 using
the control panel you must:
n Ensure AIM sensor is selected.
n Define "max RPM."
n Select the possible multiplication factor
(RPM factor).
EVO 4
Its value is typically 1 for two-stroke engi-
nes and four-stroke multi-cylinder, and 2 for
single-cylinder four-stroke engines.
n When the RPM signal is noisy
Sometimes the signal from a low voltage
point 0-50 V of the coil is particularly noisy
and EVO4 does not read RPM properly, as
in the examples:
In such cases, the filter shown in Fig.17 (Code X05ADRPMM30) can be useful. The input of the
filter must be connected to the signal RPM, and the output to the input square wave EVO4 for
5-50 V (pin 3 of connector rpm / K).
Dirty signal from the ECU
Dirty signal from the coil
Filtered wave signal