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PXIE-2529

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PXIE-2529
May 27, 2026

PXIE-2529

The PXIe‑2529 (780587‑29) is a high‑density 2‑wire PXI matrix switch module with 128 crosspoints, designed for PXI Express hybrid and peripheral slotsNI. It can be configured as 4×32 or 8×16 2‑wire matrix using different terminal block accessoriesNI. Built with latching electromechanical relays (Ag–Pd–Au contacts), it delivers low thermal offset for precision low‑voltage measurements and handles moderate power signals up to 150 VDC / 1 ANI. The module includes onboard relay counting and hardware triggering for deterministic, high‑throughput test sequencesNI.

Description

Model Nomenclature

  • PXIe: PXI Express bus

  • 25: Switch/matrix series

  • 29: 128‑crosspoint, 2‑wire, 150 V / 1 A matrix with latching relaysNI

Technical Specifications

  • Form factor: 3U, 1‑slot PXIeNI

  • Matrix size: 128 crosspoints, 2‑wire

  • Configurations: 4×32 or 8×16 (via terminal blocks)NI

  • Relay type: Electromechanical, latching; Ag–Pd–Au contactsNI

  • Max switching voltage: 150 VDCNI

  • Max switching current: 1 A DCNI

  • Bandwidth: 10 MHz

  • Scan rate: 120 cycles/sNI

  • On‑resistance: Typical <1.5 Ω

  • Relay life: >10⁶ operations (rated)

  • Operating temp: 0 °C to 55 °C; storage: −20 °C to 70 °CNI

  • Power: 7.5 W (+12 V), 2.5 W (+3.3 V)NI

  • Dimensions: 21.6 × 2.0 × 13.0 cm; weight: 410 gNI

Interface and Communication

  • Front panel: 100‑pin HDI connector for matrix I/ONI

  • Bus: PXIe Gen1, triggers 0–7 for multi‑module syncNI

  • Trigger: Hardware input, min pulse width 150 ns

  • Software: NI‑MAX configurable; LabVIEW/CVI/C++ APIs; NI‑SWITCH / Switch Executive supportedNI

Core Features

  • High‑density matrix: 128 crosspoints in one slot, 2‑wire for precision resistance/voltage measurementsNI

  • Dual topology: Software/accessory selectable 4×32 or 8×16NI

  • Low thermal offset: Gold‑alloy contacts minimize drift in low‑level DC measurementsNI

  • Latching relays: Lower power, stable state after triggerNI

  • Relay health monitoring: Onboard counter for predictive maintenanceNI

  • Deterministic scanning: Hardware triggers ensure repeatable timingNI

Application Scenarios

  • Semiconductor parametric test (low‑voltage, high‑channel count)

  • Aerospace/defense subsystem signal routing

  • Industrial sensor and low‑power device validation

  • Automotive ECU and distributed I/O testing

  • Precision 2‑wire resistance/multiplexing systems

Usage and Maintenance

Installation

Insert into 3U PXIe hybrid/peripheral slot. Connect 100‑pin HDI cable to terminal block matching 4×32 or 8×16 topologyNI. Power on; NI‑MAX auto‑detects. Configure matrix size, triggers, and relay counting.

Operation

Do not exceed 150 VDC / 1 A per channelNI. Use ESD precautions. For low‑voltage measurements, allow warm‑up to minimize thermal offset.

Maintenance

Keep module/chassis clean and ventilated. Avoid overtorquing HDI connectors. Periodically check relay count; replace when near end‑of‑life. Store dry/anti‑static when unused.


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