Here’s a quick video demo of our Lite2Sound PX v1.4 kit and a Tektronix 603 X-Y storage monitor CRT. I used a sawtooth waveform from a synthesizer as the X-input, and Lite2Sound as the Y-input. Of course, I had to try the original “comb filter” effect! Our Lite2Sound PX kit has more gain than Lite2Sound BC, and it has auto gain control. -Eric
Light from the oscilloscope screen hits a photodiode, producing an electrical signal which is amplified and fed into the oscilloscope input. Modulation results from the the beam moving off the screen, passing under the black graticule (grid), or being obstructed by objects in front of the screen.