kclo4
2008-05-26 10:40:08 UTC
Dear All, I am trying to use a PC DIO 96 board to control a pcb. I want to configure some I/O as Input and some others as output and drive the input with the output through the pcb and if input and ouput are the same then the line is ok. The problem is : it seems I can not drive the output with the input. When the ouput is high if I measure the level without connecting it, it is +5V but if I connect it to an input it becomes low (about+1V). I first thought it was a problem of pull-up or pull down resistor so I tried with a 1Kohms resistor as pull up but no effect.does anyone have any idea??Thanks you for your answer