Digital I/O for QA402

[blurpy]

I’m curious of the status of that as well. Matt showed a breakout board in this post a while ago:

Sneak Peek: The QA402

Hi @ChUml, Below is a representative plot of THD. [image] Below is a representative plot of THD+N [image] Compared to what was previously posted you can see a lot of clean-up around discontinuities. This is from smarter switching points for the relays. For loopback, here is THD [image] And for loopback, here is THD+N [image] One issue is that the input and output relays need to be configured differently depending on whether you are wanting to optimize for THD or THD+N. For best THD…

But I haven’t seen any news after that.