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National Instruments PXI-2568 31-channel SPST relay module
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National Instruments · PXI

PXI-2568

The National Instruments PXI-2568 is a software-programmable, general-purpose PXI switch with 31 independent latching SPST Form A armature relays for automated test equipment loads.

ManufacturerNational Instruments
ModelPXI-2568
Part Number778572-68
Product Type31-channel SPST relay module
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Free Shippingfull policy linked
30-Day Warrantystandard coverage
30-Day Returnspolicy applies
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Relay configuration31 independent SPST Form A relays
Relay behaviorLatching
Current per channel2 A maximum switching or carry
Signal connector62-pin D-Sub
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Overview

Product overview

Key product information and technical features.

The PXI-2568 provides independent relay connections rather than a shared multiplexer topology. Its latching armature relays combine low on-resistance with low thermal offsets.

Select loads using the voltage, current, and switching-power limits together. The specifications restrict signals to 100 Vrms, 150 Vpk, or 150 VDC and prohibit direct connection to mains supply circuits.

  • Independent SPST Form A switching paths.
  • Fully software-programmable relay operation.
  • Latching relays with low thermal offsets.
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National Instruments

Manufacturer

PXI / PXI Hybrid

Hardware platform and bus connection

PXI-2568

General-purpose relay switching module

Relay control

NI-SWITCH documentation identifies the relays as K0 through K30.

Do not combine maximum voltage and current ratings without observing the per-channel switching-power limit; direct mains connections are prohibited.
Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI PXI-2568 Product PageProduct Page · ni.com
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NI PXI-2568 SpecificationsSpecifications PDF · download.ni.com
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General Purpose Relay and Relay Driver Cable and Accessory CompatibilityAccessory Guide · ni.com
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Finding Relay Names for NI Switch DevicesTechnical resource
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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Are the PXI-2568 relays latching?

Yes. It uses independent latching SPST Form A armature relays.

Can the PXI-2568 switch 150 V at 2 A?

Not simultaneously: that combination exceeds its 60 W switching-power limit. Apply the voltage, current, and 62.5 VA limits together when selecting a load.

What relay names are used for NI-SWITCH control?

NI identifies the PXI-2568 relays as K0 through K30 in its hardware diagram.

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