APT’s GUI is our instrument control software designed to work with our 400XAC, 300XAC, 7000 and 6000 Series of AC Power Sources. This soft panel GUI allows you to fully control your APT power source from a PC. Choose from USB/RS-232, Ethernet, or GPIB interfaces. We offer instrument drivers for our automated instruments and an USB/RS-232 interface card as our standard interface card.