A new SourceMeter has been introduced by Keithley Instruments, Inc., The device is a low cost solution that is optimised for high precision test applications such as current vs. voltage (I V) characterisation of photovoltaic (solar) cells, high brightness LEDs (HBLEDs), low voltage materials, and semiconductor devices, as well as resistance measurements.

However, it now provides these advanced source and measurement unit capabilities at 20V and 1A signal.

The Model 2401 can function as a voltage source, a current source, a voltmeter, an ammeter, and an ohmmeter, and provides four-quadrant bipolar and automatic source/sink operation.

Referring to Keithley’s SMU convention, operating in I vs. V quadrants one or three, it operates as a source, delivering power to a load. In quadrants two or four, it operates as a sink, dissipating power internally from an external source such as a PV cell or other energy source.

The instrument’s combination of low cost, tightly integrated sourcing and measurement and wide dynamic range makes it suitable for a variety of both benchtop and system applications.