hi
i have a usb to RS232 converter for connect to my laptop . When I measured the voltage on tx and rx , Voltage is approximately 6 volt(in idle time) . but voltage on this points on computer case is approximately 10 volt (in idle time) .
What is the reason for this difference ؟؟
i have a usb to RS232 converter for connect to my laptop . When I measured the voltage on tx and rx , Voltage is approximately 6 volt(in idle time) . but voltage on this points on computer case is approximately 10 volt (in idle time) .
What is the reason for this difference ؟؟