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Automated Measurements with PXI Digital Multimeters

Ensuring Accuracy and Reliability in Automated Tests

Automated Measurements with PXI Digital Multimeters

In a high-speed automated test system, every component must be fast, accurate, and fully integrated. A PXI Digital Multimeter (DMM) is not just a benchtop meter placed in a chassis; it's a precision instrument designed to perform a wide range of electrical measurements with the speed and reliability demanded by modern test applications. Think of it as the precision Swiss Army knife for your automated test system, offering unparalleled versatility and performance.

Key Features & Benefits of PXI DMMs

A PXI DMM provides several key advantages that make it an indispensable tool for a wide range of automated test and validation tasks.

  • High-Speed Measurements:

    Unlike a benchtop DMM, which is often limited by its human-interface and communication overhead, a PXI DMM can perform measurements at blazing speeds. This is critical for high-volume manufacturing test where every second counts.

  • Integrated Design: 

    A PXI DMM fits seamlessly into a PXI chassis alongside other modules like power supplies, switches, and RF instruments. This modularity allows for a compact system footprint and a single, unified software interface for all instruments, simplifying development and maintenance.

  • Versatility: 

    A PXI DMM is a multifunctional instrument capable of measuring a variety of electrical parameters, including DC/AC voltage, DC/AC current, resistance, frequency, and period. It often includes additional features like diode testing and continuity checks.

PXI vs. Benchtop: A Matter of Automation

While a traditional benchtop DMM is perfect for manual troubleshooting, a PXI DMM is optimized for automation. The key difference lies in:

  • Throughput: 

    PXI DMMs can perform thousands of readings per second, making them far superior for data-intensive applications.

  • Synchronization:

    In a PXI chassis, the DMM can be tightly synchronized with other instruments, ensuring all measurements are perfectly aligned in time—a feat impossible to achieve with a manual, benchtop setup.

  • Cost & Footprint: 

    A PXI system can consolidate the functionality of multiple benchtop instruments into a single, compact chassis, reducing both cost and valuable lab space.

Makkal's Expertise in Automated DMM Solutions

We specialize in designing and implementing complete, automated test systems built on the NI PXI platform. Our expertise extends beyond simply providing a PXI DMM. We deliver a fully integrated solution that leverages the power of LabVIEW and TestStand to automate your measurements, analyze data in real time, and generate comprehensive reports, all while ensuring your system is optimized for speed and reliability.

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