Tool/software:
Hello:
Recently, there are something strange about PGA900 with OWI communication .
1、three boards with PGA900 using OWI communication, they can execute the zero and calibration , but when send the saving command to save the Zero and Span data into target at the Zero output state , the zero and span output both become the zero output; when send the saving command to save the zero and span data into target at the Span output state , the zero and span output both become the Span output.
2、one board with PGA900 using OWI communication, it can execute zero and Span calibration . but after span calibration, the zero output changed.
3、one board with PGA900 using OWI communication, before calibration ,the zero and span output is correct, but when execute the zero calibration ,the span output becomes the same value as the zero output, and then , I send the span calibration command ,there is no use.
when appearing above problems, I checked the AVDD , the bridge output , and Resistive sensor N input and P input , there are all correct.
I want to know which cause these problems , and how to solve
thanks and best regards
Kim