Sorry, I just looked at that pdf again and now I see your operate pin is 23, which is the same as the box I use, just newer. Ok now I think I have it figured out. You need to send 5V to pin 1 of the digital connector. So from your DAQ box, you need to pick any digital channel you want (what DAQ you using?). Also you need to connect the digital ground to pin 5. Now once you figure out how to make the pin read 5 volts, I suggest just using digital pin 0, you can then connect it to Pin 1 (for both force plates) digital connector. And to test that it is working, without the forceplate connected, also prob pin 23 on the 37 forceplate connector and you should see 5v there also. I am 99% sure this is what you have to do. However you need to do the basics of learning how to write a high signal to a digital pin. From reading your posts, it seems it is always 5V. How are you planning to feed the 5v into that digital connector? I suggest taking an old DP9 cable, cut off the end you don't need, then figure out the wires that match the pins and wire all 9 wires into your daq ( then you can control the range of the force plate). I hope this makes some sense, but like I said, first step is to figure out how to change digital level (suggest search Digital in the example finder, and use the write digital channel example).
