I'm using my new Tek oscilloscope to collect data from a DIY spectrometer. The scope is in X-Y mode with infinite persistence. The X axis is controlled by the rotational position of the diffraction grating in the spectrometer, and the Y axis is controlled by the photomultiplier tube, which is detecting the spectra. In this video, I discuss the scope setup, and in future videos, I will talk more about the spectrometer, and how to use it.