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                                                                          Technical documentation: 

MyChron 3 XG LOG 

– Version 1.07 

2

Data are stored in a huge 8 Mbytes internal flash memory and may be downloaded to a PC 
through an USB cable. 
For further information on the gauge’s display, please refer to the following drawing. 

 

Gear display

1st displayed channel

Temperature unit of measure

Displayed input channels

4 alarm led:

Lap / Split times

from "AL 1" to "AL 4"

USB port

10 fully configurable shift lights

Battery voltage

Best lap time

Speed

RPM digital value

Night vision

Low battery warning

2nd displayed channel

Speed unit of measure

Configurable RPM scaling

RPM graphical bar

Figure 2: MyChron 3 XG LOG

 display 

 
 

Installation notes 

 
 

  We recommend to choose a place where the instrument will not be 

in contact with oil or fuel, be sure that the gauge is not installed too 
close to heat sources and protect the instrument from vibrations; 

 

  We remind you that 

MyChron 3 XG LOG

 is not equipped with 

internal batteries, so it needs to be powered by an external 

9 – 15V

 

power source (i.e. the car’s battery). 

Do not exceed these limits.

 

 

Speed 
direction 

 

In order to correctly measure the 
lateral g-force using the internal 
accelerometer, it is suggested to 
install the gauge with the 
Junction box’s front panel 
perpendicular to the vehicle’s 
speed, as shown in Figure 3. 

Figure 3:

 How to correctly install  Your 

MyChron 3 XG LOG

 (Junction box’s top side view) 

Lateral 

accelerometer 

 

  Once the gauge and the Junction box have been correctly installed, 

you may plug all the sensors inside the junction box front panel; 

 

  Moreover, you may connect the gauge to the engine’s ECU using 

the serial/CAN cable. 

 

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