I am building the Elenco AM/FM radio kit. And for a static power test it is telling me to connect my equipment ground to circuit ground test point 15 while the circuit is being powered by a 9volt battery. . I’m just pretty confused on what it means by “equipment ground” and what I can do to satisfy this. I have a DC power supply unit that has a ground terminal can I use that? I am a beginner and have very little knowledge so explain it like you’re explaining it to a five-year-old please. Thank you for your time and help!