I've got a "personal training lab" from CIE (see picture middle of the page here: https://cie-wc.edu/Electronics-Technology.aspx). It has a function generator on it and I'd like to use it to learn how to use my oscilloscope. But I've read about the dangers of testing things while connected to A/C current. Does anyone know if/how I can safetly test circuits on this training lab with my scope? I don't have an isolation transformer.