Hello! In my attempts to understand, why I cannot get my diy output driver for switching the laser power on/off, I discovered that 5i23's gpio pins aru pulled up to only 3,3V, not 5V, when turned off, so there is 1,7 V still remaining supplied to optoisolator. There are jumpers on 5i23 that determine, if pins are pulled up to 3,3 or 5V. I have 7i39 card attached to the same connector. Is there a chance for possible damage for 7i39, if I will set that connector to pull up all pins to 5V instead of 3,3V?
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