PXI-2527

The PXI-2527 is a 32-channel, 300 V PXI multiplexer switch module from National Instruments, designed for medium- to high-density automated test systems requiring high-voltage signal routing, switching, and measurement expansion. The module uses high-power electromechanical relays and is commonly deployed as a front-end switching solution for PXI digital multimeters (DMMs), DAQ systems, and automated validation platforms.

The NI PXI-2527 supports multiple switch topologies, including:

• 64×1 1-wire multiplexer
• 32×1 2-wire multiplexer
• 16×1 4-wire multiplexer
• Independent switching configurations

This flexible architecture allows engineers to route multiple measurement points to shared instrumentation resources in PXI automated test environments.

One of the key advantages of the PXI-2527 Multiplexer Module is its support for high-voltage and high-power signal switching. The module supports:

• Up to 300 V channel-to-channel
• Up to 300 V channel-to-ground
• Maximum switching current up to 2 A
• Maximum switching power of 60 W / 62.5 VA

This makes the PXI-2527 suitable for industrial, aerospace, automotive, and electronic validation applications requiring reliable high-voltage switching performance.

The National Instruments PXI-2527 features high-power electromechanical relays optimized for automated test systems requiring reliable long-term switching performance. The module also includes onboard relay counting for predictive relay monitoring and maintenance management, helping engineers track relay wear and improve system reliability.

Another important feature of the PXI-2527 is its deterministic hardware-triggered scanning capability. The module supports hardware-triggered scan operations and large scan lists for high-throughput automated measurements. Engineers can perform fast sequential measurements without constant host CPU interaction, improving overall automated test efficiency.

The PXI-2527 integrates with NI Switch Executive, NI-SWITCH, and PXI automation software platforms. Engineers can configure switching routes, automated scans, and synchronized measurement systems within LabVIEW and NI automated test environments. The module is commonly used together with PXI DMMs for voltage, resistance, capacitance, inductance, and thermocouple measurement systems.

Technical specifications describe the PXI-2527 as supporting scanning rates up to approximately 140 channels per second, deterministic trigger operation, and up to 32,000-step scan lists for automated test sequences. The module is rated for Measurement Category I (CAT I) applications and supports shielded cable operation for EMC compliance.

The PXI-2527 Multiplexer Switch Module installs into a compatible PXI chassis and can operate alongside RF instruments, DAQ modules, oscilloscopes, timing hardware, and industrial communication systems. Engineers can build scalable automated validation systems for semiconductor testing, aerospace electronics, industrial automation, automotive electronics, and research laboratories.

The PXI-2527 is suitable for applications such as automated test equipment (ATE), signal routing, DMM channel expansion, thermocouple scanning, industrial switching systems, validation platforms, and high-voltage automated measurement systems. Its flexible topology and high-voltage capability make it especially useful for scalable PXI switching architectures.

Overall, the NI PXI-2527 Multiplexer Switch Module is a reliable high-voltage PXI switching solution for automated test and measurement systems. With its 32-channel architecture, 300 V switching capability, 2 A current support, multiple multiplexer topologies, and integration with NI Switch Executive and PXI automation software, the PXI-2527 is well suited for industrial automation, aerospace testing, and scalable automated measurement applications.