NI PXIe-2532B 128×1 Matrix Switch Module | Replacement, Equivalent & Selection Guide
The NI PXIe-2532B (National Instruments) is a high-density 128×1 matrix switch module designed for PXI Express systems. It delivers reliable signal routing for automated test and measurement applications requiring large-scale switching with minimal signal degradation. This page provides full technical specifications, compatible replacement options, and a practical selection guide to help engineers choose the right module for their system.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | PXIe-2532B |
| Manufacturer | National Instruments (NI) |
| Form Factor | PXI Express (PXIe), 1-Slot |
| Topology | 128×1 Matrix (Single-Wire) |
| Max Switching Voltage (DC) | 60 V DC |
| Max Switching Current | 1 A |
| Max Switching Power | 60 VA |
| Bandwidth (–3 dB) | Up to 300 MHz (typical) |
| Relay Type | Reed relay |
| Channel Count | 128 channels |
| Operating Temperature | 0 °C to 55 °C |
| Connector | Two 50-pin VHDCI connectors |
| Software Support | NI-SWITCH, LabVIEW, LabWindows/CVI, .NET |
| Approx. Weight | 800 g |
Compatible Replacement & Equivalent Models
When the PXIe-2532B is unavailable or cost-prohibitive, the following models may serve as functional replacements depending on your topology and bandwidth requirements:
- NI PXIe-2532 – Previous generation; same 128×1 topology, slightly lower bandwidth. Direct software-compatible replacement in most NI-SWITCH applications.
- NI PXI-2532 – PXI (non-Express) variant; compatible with legacy PXI chassis. Requires PXI slot (not PXIe).
- NI PXIe-2527 – 32×1 matrix; suitable for lower channel-count applications with similar voltage/current ratings.
- NI PXIe-2529 – 128×1 matrix with triple-wire topology; ideal when three-wire switching is required.
- Pickering 40-726 – Third-party 128×1 PXIe matrix switch; compatible with NI chassis, supports NI-SWITCH via IVI driver.
- Keysight M9157C – PXIe matrix switch module; evaluate bandwidth and topology match before substitution.
Note: Always verify connector pinout, relay type, and driver compatibility before substituting modules in production test systems.
Why Choose the Original NI PXIe-2532B
- Highest channel density in a single PXIe slot — 128 independent channels minimize chassis slot usage.
- Reed relay technology ensures low contact resistance, long operational life (>100 million operations), and excellent signal integrity.
- Native NI-SWITCH integration — seamless configuration via NI MAX, LabVIEW, and TestStand without third-party drivers.
- Calibration support — fully supported by NI calibration services and self-calibration routines.
- Proven in production ATE — widely deployed in semiconductor, aerospace, and defense test environments.
Typical Applications
- Semiconductor wafer and device characterization
- RF/microwave signal routing in automated test systems
- Avionics and defense subsystem functional testing
- Multi-DUT parallel testing to increase throughput
- Data acquisition signal multiplexing
- Sensor simulation and stimulus/response testing
System Compatibility
- Chassis: Compatible with all NI PXI Express chassis (e.g., NI PXIe-1085, PXIe-1082, PXIe-1071). Hybrid slots required for PXI-2532 (non-Express).
- Controllers: NI PXIe-8840, PXIe-8861, PXIe-8880, and all NI embedded/remote controllers supporting PXIe.
- Software: NI-SWITCH 19.0+, LabVIEW 2018+, LabWindows/CVI 2017+, NI TestStand 2019+, Python (nidaqmx/niscope via IVI).
- Accessories: NI SHC50-50-A2 cable, NI TB-2640 terminal block (verify compatibility per application).
Selection Guide
Use the criteria below to determine whether the PXIe-2532B is the right module — or which alternative best fits your needs:
| Requirement | Recommended Model |
|---|---|
| 128 channels, single-wire, PXIe, ≤300 MHz | PXIe-2532B ✓ |
| 128 channels, single-wire, legacy PXI chassis | PXI-2532 |
| 128 channels, three-wire topology | PXIe-2529 |
| 32 channels, lower cost, PXIe | PXIe-2527 |
| 128 channels, third-party / cost-sensitive | Pickering 40-726 |
| High-frequency (>1 GHz) switching required | NI PXIe-2548 / PXIe-2549 |
Quality Assurance & Sourcing
All NI PXIe-2532B modules sourced through Konmask.com are:
- Inspected for physical integrity and connector condition prior to shipment
- Tested for basic power-on functionality where applicable
- Supplied with original NI documentation and calibration records when available
- Eligible for NI factory recalibration service upon request
We source from authorized distributors, certified resellers, and verified surplus channels. Condition (new, refurbished, or surplus) is clearly stated on each listing.
How to Order
- Confirm your chassis slot type (PXIe vs. PXI hybrid) and available slots.
- Verify software version compatibility (NI-SWITCH driver version).
- Select quantity and condition (new / refurbished / surplus) from the product options above.
- Add to cart and proceed to checkout, or contact us for volume pricing and lead time.
- For custom configurations or system integration support, email [email protected].
Replacement & Compatibility FAQ
Q: Can I use the PXIe-2532B in a standard PXI (non-Express) chassis?
A: No. The PXIe-2532B requires a PXI Express slot. For legacy PXI chassis, use the PXI-2532 instead.
Q: Is the PXIe-2532B backward compatible with the PXIe-2532?
A: Yes, in most cases. The 2532B uses the same NI-SWITCH API and topology. Verify your NI-SWITCH driver version supports the 2532B (requires NI-SWITCH 17.1 or later).
Q: Can Pickering or Keysight modules replace the PXIe-2532B in an NI TestStand sequence?
A: Potentially, via IVI-compliant drivers. However, NI-native features (self-calibration, NI MAX integration) will not be available. Thorough validation is required.
Q: What is the typical lead time for the PXIe-2532B?
A: In-stock units ship within 1–3 business days. For new factory orders, contact us for current NI lead times.
Q: Do you provide calibration certificates?
A: Calibration certificates from NI or accredited labs are available upon request. Please specify at time of order.
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