Digital Multimeters (DMMs) and Precision DC Sources

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Are SMU PXIe 413x true floating supply resources?

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Are the SMU PXIe-4137 and 4139 true floating resources?

If so, up to how much voltage can they float?

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Accepted by topic author MrVito

Hi MrVito,


This will be specified in the documentation under the Isolation section.  The PXIe-4137 will allow 250 VDC channel to ground, while the PXIe-4139 will allow 150 VDC.  Note that is the maximum between any channel terminal and chassis ground.  If you are floating a voltage, you need to make sure that all terminals for that channel stay below this limit.


PXIe-4137 Specifications:


PXIe-4139 Specifications:

Michael B.
Product Support Engineer
National Instruments
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