Additional Features: Ranges: 100 microvolt to 100V range Current up to 100 mA The Agilent 41421B Source/Monitor Unit (Medium Power SMU: MPSMU) is a plug-in unit for the 4142B Modular DC Source/Monitor. The 4142B can force and measure up to +/-100 V or +/-100 mA (maximum power: 2 W). The Agilent 41421B pA Meter / DC Voltage Source consists of an extremely stable picoampere meter and two programmable DC voltage sources, one of which operates as a ramp and staircase generator as well as a DC source. These features make the unit ideal for making DC characteristic measurements such as leakage current, current-voltage characteristics and quasi-static C-V measurements required by the semiconductor industry for new product development and for improving production yields. It is equally useful in measurements of electronic components and materials to determine leakage currents or insulation resistances.