NI PXI-2531, NI PXIe-2531, NI PXI-2532, NI PXIe-2532

High-Density Multiconfiguration Matrix Switch Modules

Overview

The NI PXI-2531, PXIe-2531, PXI-2532, and PXIe-2532 are 512-crosspoint,

high-speed matrix switch modules. With the ability to create up to a 4x2176 or

8x1088 one-wire matrix in a single PXI chassis and even larger configurations

with multichassis solutions, an NI 2531/2 is ideal for high-channel-count

automated test configurations. Featuring compact reed relays with switching

speeds up to 2,000 cycles/s and the ability to synchronize with instruments,

these modules provide maximum throughput in a test system for signals up to

100 VDC/100 VAC or 0.5 A.

Matrix Operation

The NI 2531/2 modules are general-purpose matrices used to route referenced

or differential signals. Through software, you can control the modules to connect

any row to any column. One of the key advantages of these matrices is you can

adapt them to your switching needs. You can configure them in many different

matrix configurations by using NI terminal blocks listed. For example, you can

create a 4x128 one-wire matrix by using the TB-2640 terminal block with an NI

2531/2 module. You can easily transform the same module into an 8x64

one-wire matrix by using a TB-2641 terminal block. Because the NI 2531/2

modules are built with sixteen 2x16 matrices, you can also create matrix sizes

outside the standard terminal block configurations. Other one-wire configurations

include a 16x32 matrix or four independent 4x32 matrices. In a two-wire

configuration, you can build a dual 4x32 or 16x16 matrix. Contact NI for more

information on creating custom configurations.

Relay Count Tracking

An NI 2531/2 counts relay closures on each of its 512 relays. Relay counts are

incremented each time a relay is actuated. You can programmatically retrieve

the counts, which are stored on board the module, and use them for predictive

maintenance to reduce unexpected system downtime.

Automatic Scanning

These modules maximize throughput in automated test applications by the

use of scanning. Scanning improves throughput by downloading a list of up to

32,000 connections to the switch and cycling through the list using an event

(trigger) without any interruption from the host processor. You can most

efficiently implement scanning by mating an NI 2531/2 with an instrument

such as the NI PXI-4070 6½-digit FlexDMM, which issues a trigger after

each measurement.

512-crosspoint matrix in a single

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3U PXI slot

4x128 (1-wire), 8x64 (1-wire),

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4x64 (2-wire), and 8x32 (2-wire)

matrix configurations

Switch capacity

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NI 2531: Up to 60 VDC/30 VAC, 0.5 A

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NI 2532: Up to 100 VDC/100 VAC, 0.5 A

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2,000 cycles/s

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32,000-step scan list for

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deterministic scanning

Fully software programmable

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Onboard relay count tracking

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Multiple-module synchronization

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with hardware triggers

Sixteen 2x16 matrix banks for

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custom matrix configurations

Available in both PXI and PXI Express

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versions for optimal slot placement

Operating Systems

Windows XP/2000/NT

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Recommended Software

LabVIEW

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LabWindows

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™

/CVI

Measurement Studio

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for Visual C++

NI Switch Executive

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Other Compatible Software

Visual Basic

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ANSI C/C++

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Driver Software (included)

NI-SWITCH

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NI-DAQmx

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Compliance

UL (NI 2532 only)

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CE

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Module

Maximum Voltage

Maximum Current

Module Connector

Terminal Block Connector

NI 2531

60 VDC, 30 VAC

0.5 A per channel (10 W max)

2x 150 pos, Samtec ERM8 series (optimized for ruggedness)

2x female VHDCI (with optional screw terminal breakout)

NI 2532

100 VDC, 100 VAC

0.5 A per channel (10 W max)

2x 160 pos, Samtec BTE-EM (optimized for high voltage)

Standard 0.050 in. pitch headers to ribbon cables

(with optional screw terminal breakout)