4.2 Analog Output 1

QUICK INFO:

The PLEX KNOCK MONITOR has 2 analog outputs with an output range from 0 to 5V that can be used to record

knock level, knock count and other parameters with a dynamometer, ecu or external datalogger.

Options available:

1) Knock signal from sensor 1(current signal from knock sensor after passing set filter linearised to the 5V range. 0V = level 0, 5V =  level 255)

2) Knock signal from sensor 2(current signal from knock sensor after passing set filter linearised to the 5V range. 0V = level 0, 5V =  level 255)

3) Max of the signals from both sensors(the higher of the 2 signals above)

4) Knock threshold level(the current calculated or set knock threshold level. 0V = level 0, 5V =  level 255)

5) Total knock count(0V = 0 count, 5V = 255 count, count can be reset on device or via the software if it reaches maximum)

6) Knocking cylinder number indication(voltage level indicating which was the last cylinder that knocked.

0.625V cylinder 1, 1.25V cylinder 2, 1,875V cyl3, 2.5V cyl4, 3.125V cyl5, 3.75V cyl6, 4.375V cyl7, 5V cyl8

7) Ignition retard(output goes above 0V if knock is detected and slowly ramps down if no knock is detected, can be used to add basic knock control to an ecu)

8) Knock warning( output goes to 5V when knock is detected and to 0V when there is no knock.

9) Fixed 0V, used for calibration and test purposes

10) Fixed 5V, used for calibration and test purposes