ABC Series Power Supplies employ high frequency switch-mode conversion and power factor correction. ABC Power Supplies are full-range, automatic-crossover voltage/current stabilizers with a full rectangular output characteristic. The ABC is controlled digitally over the entire voltage/current range. Voltage and current are displayed on a two-line alphanumeric LCD display. Control of the ABC can either be local (via the front panel keypad) or remote (via either the IEEE 488.2 GPIB communication bus or RS 232 serial bus) using SCPI commands.