SSP KONSTANTER (single-output system power supplies) DC power supplies can be manually or remote controlled for laboratory or systems applications. Despite high output power, the devices are small in size and lightweight as well. The floating output is provided with protective isolation from the mains power supply, as well as all optional computer interfaces, and has been classified as a safety extra-low voltage circuit (SELV) in accordance with VDE / IEC. Nominal power supplied by the voltage and current controlled output can be delivered over widely adjustable voltage and current ranges. These devices are generally equipped with operating elements and displays, as well as an analog interface. An optional IEEE488/ RS232C or an RS232C interface can be inserted into the device in order to link it to computer controlled systems. Manual adjustment of voltage and current is accomplished by means of two rotary knobs with adjustable resolution. A wide variety of additional functions can be selected with the keys. Two 4-place digital LED displays provide information concerning measurement and set values. Current operating modes, selected display parameters and the status of device and interface functions are indicated with LEDs. The analog interface allows for the adjustment of output voltage and current with external control voltages, and for the linking of several devices in the master-slave operating mode. The power output can be activated and deactivated, the front panel can be locked, and stored configurations can be recalled via the floating optocoupler inp