I have a K8000 with functioning outputs, both DAC and DA. The problem is that the AD inputs assume a value related with DA ouput and not related with analog input. In fact, with no linking at the four AD, AD values are 16,3,0,3 when DA is set to 0, and 144,243,238,243 when DA is set to 255. The AD value slightly change at each test. Furthermore, the AD values don’t change with an analogue input (4 Volts). Testing the card with the test program, the AD values rise when DA rise. What happens?