194 OEM4 Family Installation and Operation User Manual Rev 12Appendix K Specifications ArchiveFigure 69: Front-view of 64-Pin Connector on the Euro4Signal Descriptions Row A PinGND Digital Ground 15VIN Voltage in, 5 VDC ± 0.125 VDC 2Reserved for future use. 3GND Digital Ground 4GPIO_USER0 Reserved. 10 kΩ pull-down resistor. 5GPIO_USER1 Reserved. 10 kΩ pull-down resistor. 6GND Digital Ground 7RTS1(-)/NC COM1 Request to send (-) for RS422 / not connected for RS232 and LVTTL 8TXD1(+)/TXD1 COM1 Transmitted data (+) for RS422 / transmitted data for RS232 and LVTTL 9RXD1(+)/RXD1 COM1 Received data (+) for RS422 / received data for RS232 and LVTTL 10RXD1(-)/NC COM1 Received data (-) for RS422 / not connected for RS232 and LVTTL 11RTS3(-)/NC COM3 Request to send (-) for RS422 / not connected for RS232 and LVTTL 12TXD3(+)/TXD3 COM3 Transmitted data (+) for RS422 / transmitted data for RS232 and LVTTL 13RXD3(+)/RXD3 COM3 Received data (+) for RS422 / received data for RS232 and LVTTL 14GND Digital Ground 15RTS2(-)/DTR2 COM2 Request to send (-) for RS422 / data terminal ready for RS232 and LVTTL 16TXD2(+)/TXD2 COM2 Transmitted data (+) for RS422 / transmitted data for RS232 and LVTTL 17RXD2(+)/RXD2 COM2 Received data (+) for RS422 / received data for RS232 and LVTTL 18RXD2(-)/DCD2 COM2 Received data (-) for RS422 / data carrier detected for RS232 and LVTTL 19TXD3(-)/NC COM3 Transmitted data (-) for RS422 / not connected for RS232 and LVTTL 20CTS3(-)/NC COM3 Clear to send (-) for RS422 / not connected for RS232 and LVTTL 21RXD3(-)/NC COM3 Received data (-) for RS422 / not connected for RS232 and LVTTL 22GND Digital Ground 23GND Digital Ground 24GND Digital Ground 25GND Digital Ground 26GND Digital Ground 27GND Digital Ground 28GND Digital Ground 29GND Digital Ground 30GND Digital Ground 31GPIO_FR Reserved. 10 kΩ pull-up resistor. 32Keying tabComponent sideof Euro4 GPSCard
