Popufare-Auxiliary-Documentation/notes/Test-Equipment-Notes.md

Test Equipment Notes

Buses are a harsh environment both physically and electrically. In order to make sure electronic components are ruggedized against the environment they'll be put in, this document collects different resources on test equipment and notes on testing.

RF Spectrum Analyzer

HackRF along with software that does spectrum analysis looks to be a good reasonably priced and open source hardware solution.

Audio Analyzer

Spek looks to be a nice FOSS front end for audio spectrum analysis.

We probably only want decibel measurements to determine what loudness the DIU and other speaker elements should be.

I have used a cheap BAFX3370 decibel meter to get some rough measurements. Ideally there would be a microphone or other decibel monitoring device on the bus to get a better reading.

Test Fixture

To simulate the vibration of the bus, a suitable test fixture should be developed.

At a minimum, the sway and resonance of the fixture should be variable to test how well the assembly is against vibration that can occur on the bus.