Have been using the Chroma 62000 series power supplies with Labview via USB for about a year now. I occasionally experience a problem where the device wont respond to any init or config commands. In the past, this usually only happens if the device sits idle for a period of time(typically 60 minutes or more). Recently, our contract manufacturer has been seeing this issue occur after after just a minute or two of downtime between switching out UUT's in our test fixture. When wetry to run the initiate.vi I get the following error:
"chr62000 Initialize.vi Driver Status: (Hex 0xBFFF003E) Could not perform operation because of I/O error. Elaboration: Attribute: IVI_ATTR_INSTRUMENT_MODEL VISA: (Hex 0xBFFF003E) Could not perform operation because of I/O error. [Error Code: -1073807298, User-defined error code.]"
I can open the Visa Test Panel in MAX and the device respond to queries. However, the only way to restore normal operation in LabVIEW is to restart the PC.
Anyone every come across similar issues? Thoughts?