PXIe represents the PXI Express high-speed modular instrumentation bus. The number 41 stands for the series of precision source measure units. 4142 refers to a four-channel SMU featuring extended voltage and current ranges, 100 pA current sensitivity and higher single-channel power capacity.

This module adopts a 3U single-slot structure and offers four fully independent channels. Each channel features 60 VDC CAT I isolation against chassis ground. The programmable voltage range is ±24 V with a minimum adjustment step of 0.1 millivolts. The current range covers ±150 mA, supported by five auto-ranging current scales. The maximum output power per channel is 3.6 watts. The module delivers 100 pA current sensitivity on the low current range.

The simultaneous sampling rate for voltage and current measurement reaches up to 600 kS/s, and the signal update rate is up to 100 kS/s. For electrical performance, the voltage accuracy is within ±0.02 percent of the full range plus 50 microvolts. The current accuracy is within ±0.03 percent of the full range plus 100 pA on the minimum current scale. It supports four-wire remote sense with guard function and programmable output impedance. Built-in protection functions include overvoltage protection, overcurrent protection, reverse polarity protection and overtemperature protection.

The operating temperature ranges from 0 degrees Celsius to 55 degrees Celsius, and the rated accuracy is guaranteed within the temperature range of 18 degrees Celsius to 28 degrees Celsius. The storage temperature ranges from -40 degrees Celsius to 70 degrees Celsius. The applicable humidity is 10 percent to 70 percent without condensation. A warm-up period of 30 minutes is required to achieve full measurement accuracy. The recommended calibration cycle is one year. The external interface is a 25-pin male D-Sub connector.

The module uses PXIe Gen1 bus and supports plug-and-play function under Windows operating systems. Users can complete hardware configuration, parameter setting and device diagnosis via NI-MAX. Interactive operation is available with InstrumentStudio. Secondary development and automated control can be realized through LabVIEW, LabWindows/CVI, C++ and Python with the dedicated NI-DCPower driver.

It supports PXI trigger lines to implement hardware synchronization between multiple modules, and can be linked with other PXI instruments to form continuous test sequences. All signal connections are realized through the front-panel 25-pin D-Sub connector.

It supports four-quadrant bidirectional operation, capable of both sourcing and sinking power to meet the test demands of various active devices. With 100 pA ultra-low current sensitivity, it can accurately detect tiny leakage current and weak current signals. Equipped with SourceAdapt technology, it adjusts transient response dynamically to suppress overshoot and ensure stable output for different loads.

The four-wire remote sense with guard design effectively eliminates measurement errors caused by wire resistance and common-mode interference. High-speed sampling and updating performance enable fast I-V curve sweeping and pulse testing. Multiple working modes are available to adapt to single-point measurement, continuous sequence testing and complex customized test procedures. Comprehensive protection mechanisms prevent the device under test and the module itself from damage caused by abnormal operating conditions.

It is used for characteristic testing of power semiconductors such as MOSFETs, IGBTs and power diodes. It conducts performance verification for power management chips, multi-channel integrated circuits and system-on-chips on high-pin-count automated test equipment. It is applied to parameter measurement of precision sensors, MEMS devices and passive components.

It can perform charge and discharge cycle tests for medium-capacity batteries and supercapacitors. It also serves for reliability and performance testing of avionics and defense electronic modules that require medium voltage and current output with high measurement precision.

Insert the module into a 3U slot of the PXIe chassis and fasten the front panel latch. Connect the device under test and sense wires to the 25-pin D-Sub connector, and make proper wiring for the guard terminal when conducting low-current measurement. Power on the chassis, and the system will automatically identify the module. Open NI-MAX to set voltage and current limits, enable remote sense function and configure trigger parameters. Develop corresponding test programs to complete automated testing and data collection.

Place the equipment in a clean, dry and well-ventilated environment and keep the ambient temperature within the rated range. Do not apply excessive force when plugging and unplugging connectors to avoid damaging internal pins. Regularly inspect connecting cables and connectors for dirt, aging and poor contact. Ensure sufficient air circulation around the module during long-time continuous operation. When the module is not in use, cut off the power supply, disconnect all cables, and store it in a dry environment with electrostatic protection.

Do not operate beyond the rated voltage, current and power parameters to avoid permanent damage to internal circuits. Follow standard electrostatic protection rules during handling and operation. Disconnect all power supplies of the chassis before installing, removing or maintaining the module. Complete regular calibration work according to the recommended cycle to maintain long-term measurement accuracy. Dispose of the module in accordance with local electronic waste regulations after the end of service life.