National Instruments (NI) recently introduced its new PXI-2527 multiplexer switch module, further expanding its product line in the field of automated testing. The PXI-2527 is a 300V, 32-channel multiplexer ideal for medium to high-density automated test applications, providing engineers with more channel configuration options and increased test flexibility.

The PXI-2527 features a high-power electromechanical relay that not only provides an ideal front end for the PXI DMM module, but also provides a simple channel extension for various measurements. The module supports multiple channel configurations, including 64×1 1-wire, 32×1 2-wire and 16×1 4-wire configurations, to meet different test requirements. In addition, the PXI-2527 has an onboard relay counting function that enables deterministic operation via hardware triggers, resulting in increased test throughput.

The technical specifications of the PXI-2527 include but are not limited to the following:

Independent input specifications: All input specifications are DC, AC RMS, or a combination of both, unless otherwise indicated.

Maximum switching voltage: Channel to channel 300V, channel to ground 300V (CAT I).

Maximum switching power (per channel) : AC system 60W, 62.5VA (up to 60Hz); For the DC system, refer to the user manual.

Maximum total current (switch or load) : 2A.

Bandwidth (-3 dB, 50Ω terminal) : 1-line >30MHz, 2-line >25MHz.

Dynamic relay operation time: typical 1ms, maximum 3.4ms.

Estimated relay life: mechanical 1×10^8 cycles.

The PXI-2527 also supports thermocouple measurement, and users can use the PXI-2527 for thermocouple voltage to temperature conversion in combination with the TB-2627, and the software program provided by NI can complete this conversion and ensure the accuracy of the measurement.

The introduction of this module not only expands NI’s options for modular instrumentation in PXI, but its high performance and flexibility make it ideal for automated testing, helping engineers improve test efficiency and accuracy.