Hi e2e,
We have a customer that purchased the PGA450Q1EVM. They are having trouble seeing any echo. Here are their comments:
While running the software (v 1.38.32) and watching the graph on the EVAL MONITOR tab, clicking “transduce and receive” does not appear to change the signal or do anything. I have provided (see below) a screenshot of the graph but I’m fairly certain it’s just noise. Looking at the signal with a scope I do not see an echo signal coming back, but I suspect that’s because it’s very small and amplified in the micro.
We are wondering if the transducer on the EVM is defective, but wanted to check with you just in case the transducer is fine and there is some setup problem.
Thanks for your help.
Regards,
John Wiemeyer