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                                                                                                             Technical documentation: 

MyChron 3 XG 

4

Dimensions 

87 [3,43]

48 [1,89]

4 [0,1

6]

39 [1,

54]

126 [4,96]

100 [3,94]

120 [4.72]

110 [4.33]

Speed

Power IN

CH3

CH1

CH2

CH4

GEAR

Beacon

RPM

 

Dimensions in millimeters [inches]

 

Channels 1

÷

4 pinout 

 

Pin Function 

Pin  Function 

 

Analog signal input  3 

+V battery 

2 GND 

4  V 

reference 

 
 

Speed channel pinout 

 

Pin Function 

Pin  Function 

 

Speed signal input 

+V battery 

2 GND 

4  Not 

connected 

 
 

Beacon channel pinout 

 

Pin Function 

Pin Function 

 

Magnetic / Optic 
codified lap 

3 +V 

battery 

2 GND 

Optic not codified 
lap 

 
 

Gear channel pinout 

 

Pin Function 

Pin Function 

 

Gear signal input 

+V battery 

2 GND 

4 V 

reference 

 
 

“Power in” channel pinout  

 

Pin Function 

Pin  Function 

 

9-15 V power input  3 

GND 

2 GND 

   

 

RPM channel pinout  

 

Pin Function 

 

RPM 150-400 V input (coil) 

2 GND 

RPM 8-50 V square wave (ECU) 

 

Note: when connecting the RPM channel, it is reminded to 
connect either the RPM signal sampled from the coil or the 
other one sampled from the ECU, not both. Moreover, do 
not connect the RPM “coil” signal on the RPM “ECU” 
input. 

 

 

 

3 & 4 pins female Binder 712 connectors pinout: external view 

 

Technical characteristics 

 

General characteristics 

Value 

 

Input channels 

Internal memory 

2 Mbytes flash EPROM 

PC interface 

300 kbyte/sec USB port 

Max sampling frequency per 
channel 

Up to 200 Hz 

Total sampling frequency 

500 Hz 

Internal g-sensor 

±

5g 

External power 

From 9 to 15 VDC 

Voltage output (V reference) 

4.5 V (for potentiometers) 

 
 

Other characteristics 

Value 

 

MyChron 3 PG dimensions 

126x92x24 mm 

Display dimensions 

87x48 mm 

Environmental IP 

65 

 

1

3

2

1

4

3

2

 

Summary of Contents for MyChron 3 XG

Page 1: ...a sond and Pitot tube speed sensors engine s RPM sampled either from the ECU square wave signal or from the coil lap and split times engaged gear number the gauge is able to sample the gear number either using an on board gear sensor or calculating them using the speed vs RPM ratio 1 speed input lateral G force the G force sensor is mounted inside the Junction box logger temperature Data is stored...

Page 2: ...use the USB data download cable and plug it both in the gauge s USB port and in the PC s USB port as explained in Figure 4 Moreover it is reminded to use a 9 15 Volts external power source in order to be able to switch on the gauge CH2 CH1 CH4 CH3 Power IN GEAR Beacon Speed RPM Figure 4 How to connect your MyChron 3 XG to the PC Software Speed direction Lateral accelerometer Once the data logger h...

Page 3: ...them you have to transmit the configuration to the instrument by pressing the Transmit button It is reminded that in order to transmit the configuration the gauge must be switched on and connected to the PC as shown in Figure 4 4 How to calibrate autocalibrate the sensors Once the configuration has been transmitted to the PC you have to calibrate autocalibrate the sensors The internal lateral acce...

Page 4: ...ion 1 9 15 V power input 3 GND 2 GND RPM channel pinout Pin Function 1 RPM 150 400 V input coil 2 GND 3 RPM 8 50 V square wave ECU Note when connecting the RPM channel it is reminded to connect either the RPM signal sampled from the coil or the other one sampled from the ECU not both Moreover do not connect the RPM coil signal on the RPM ECU input 3 4 pins female Binder 712 connectors pinout exter...

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