Tacho Output - ECU Master EMU User Manual

Tacho output

Tacho output function is used to control electronic tachometers. Based on engine speed, the EMU
generates a square wave signal with a frequency proportional to the crankshaft speed. The
tachometer should be connected to AUX 4 which is equipped with a 10K pullup resistor connected
to + 12V. If any other output than AUX 4 is used, an external pullup resistor must be used.
PARAMETER
Output
RPM Multiplier
DESCRIPTION
Device output to which the tachometer is connected
The value of the output frequency scaling that matches tachometer
indication to the engine speed
EMU
G12
G17
G24
B24
Example of the tachometer wiring diagram
Page 89