Other Parts Discussed in Thread: , ENERGIA
Hi Everyone,
I am currently working on the PGA460. My application is an air range sensor. I use an Airmar ATK75 transducer (75kHz).
I experience some issues when I try to read the distance information. In fact, all the returned values (8 objects) never update and are not coherent with the analogic signal that I can see on the TEST pin of the PGA460. I already read the FAQ about this case and I changed the value of my threshold but without any success.
So I implemented the data dump mode in order to see more precisely what happen. In fact the initial burst peak is larger on the data dump than on the analog output. Plus the signal remains stuck at 0 after the initial burst (for a few milliseconds). Even if I raise the gain value at the maximum output stay stuck at 0. After that (at the end of the recording) I can see valid signal with a peak that corresponds to a real object.
I also notice another strange thing, when I change the threshold value the shape of the initial burst peak is modified on the data dump data.
If you have any clue for helping me to find a solution you will be welcome.
Thank you.