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Making multichannel current measurements requires multiple test instruments and external current shunt accessories. Typical test applications during the product design stage include checking for current leaks, making precise current measurements for embedded systems with multi-output control functions, and monitoring multiple devices or loads. Wiring and configuring these instruments become more complex as the number of current measurement channels increases. Improperly configured test instrument connections cause measurement errors.
Using a switching system that connects multiple input channels to one or two measuring channels reduces setup complexity. A data acquisition (DAQ) system is ideal for this purpose. The switching system measures one channel at a time but at a very high speed, which works for non-dynamic current measurement applications. A PC software application can assist in configuring the wiring, selecting triggering mechanisms, executing measurements, and plotting data graphically for monitoring and analysis.
Additional resources for multichannel current measurement
Integrating an in-circuit tester into Industry 4.0 requires machines that can support IPC-CFX. Learn how to define communication protocols to ensure alignment with IPC-CFX standards.
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Characterizing current and voltage for high energy-efficient LEDs requires the ability to generate and measure current and voltage. Learn how to evaluate the IV characteristics of two- and three-terminal devices with just a source / measure unit.
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Resistance measurements require eliminating error-inducing factors, such as residual test lead resistance, thermal electromotive force, and leakage currents in the measurement path. Learn how to address these measurement issues using a remote sense function (4-wire connection), offset compensation, and a guard function.
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