What Are PXI Source Measure Units?

PXI Source Measure Units (SMUs) combine high-precision source and measure capability with features designed to reduce test time and increase flexibility.

InstrumentStudio™ Interactive Software

PXI SMUs are shipped with an interactive soft front panel called InstrumentStudio for ready-to-run configuration and measurements. It includes two modes: one for constantly outputting a DC current or voltage and another for multichannel sweeps. You can also monitor and debug the instrument in parallel with running code.

Hardware-Timed Sequences

Get your results faster by removing the communication latency between the host computer and SMU among each measurement of a sequence and, at each step, change various SMU parameters such as output mode, aperture time, current range, and transient response.

Custom Transient Response

Digitally control the transient properties of PXI SMUs to maximize stability, reduce overshoot, and greatly decrease test times with NI SourceAdapt, a patented technology on PXI SMUs.

High-Power Pulsing

Operate beyond the basic DC power boundary of PXI SMUs by pulsing current or voltage instead of supplying a constant DC source, allowing you to test at high instantaneous power with limited or no heat sink infrastructure.

Advanced Sequencing

Change nearly any parameter of PXI SMUs, including aperture time, compliance limit, output mode, and measurement range, without delay to save measurement time during hardware-timed sequences.

Featured Content


PXI 101

Learn the basics of the PXI platform for automated test and measurement with the PXI 101 Platform Resource Kit, which includes architectural notes, relevant case studies, and performance metrics.

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Hardware Services

Service Program Options

Every PXI purchase includes the following services:

  • One-year warranty for basic repair coverage
  • Calibration in adherence to NI specifications prior to shipment
  • Basic assembly and functional test
  • 30 day technical support trial*


NI offers additional hardware services as part of expanded service programs that can improve uptime and lower maintenance costs.


*You can extend access to technical support by purchasing a Standard Service Program for software.