Aim-TTi Single Power Supply USB/RS232/LAN(LXI)/Analog PL303-P - Aim-TTi PL303-P, The Aim-TTi PL303-P offers remote control and read-back using analog, RS232, USB, LAN (LXI) interfaces. They retain all of the capabilities of the New PL Series when under manual control. When working with any particular piece of equipment, engineers often require a voltage source variable over only a narrow range. Set the voltage too high and damage might occur, set it too low and the circuit may reset. Thats where the V-Span function of the Aim-TTi PL303-P comes in. It allows the user to redefine the end-stop values of the voltage control to define a specific voltage range. An engineer is working on a circuit that will eventually operate from four NiMh cells. They use V-Span to set a Vmax of 5.8V (to prevent over-voltage damage) and a Vmin of 3.6V (to ensure that the circuit doesnt reset). They now have a power supply which provides high resolution analog control over the exact voltage range