Just having a little more fun on the bench with the Moteino (see previous video on this Arduino close with RFM12B wireless transceiver), and the Tektronix MDO4000 Mixed Domain Oscilloscope. Here, we view the analog waveforms for two different low-speed serial busses (RS-232 and SPI), decode those busses, and look at the RF spectrum characteristics, and FSK modulation characteristics vs. time - all using a single capture on the scope.