Every machine has its own way of communicating with its operator. Some send status emails, some illuminate, but most of them vibrate and make noise. If it hums happily, that’s usually a good sign, but ...

[El Artis] just finished building an audio spectrum analyzer that uses a character LCD. The uses an Arduino to drive the display, but unlike other meters that use the microcontroller for analysis, [El ...

Depending on what kind of signals you're examining, a swept-tuned, vector, or real-time spectrum analyzer may be the optimum choice. Like most modern radio communications devices, wireless local-area ...

LeCroy’s WaveMaster 8 Zi digital oscilloscopes, Agilent’s N9030A PXA spectrum analyzer, and Tektronix's RSA6120A spectrum analyzer are top of the list for test and measurement in 2009. Test-equipment ...