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Why Do 446x and 445x Series DSA Boards have a 42.4V Maximum Range?

Hardware: Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PXI-4461, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PCI-4462, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PCI-4453, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PCI-4451, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PCI-4452, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PCI-4461, Modular Instruments>>Dynamic Signal Acquisition and Analysis (DSA)>>PXI-4462, Signal Sources (AWG/FG/AO)>>Arbitrary Waveform and Function Generators>>PXI-5412

Problem:
The 446x and 445x series DSA boards have a rated maximum voltage range of 42.4 volts.  Why is the  voltage greater compared to the 447x series (10V), and why is it a seemingly odd number?

Solution:
The 446x and 445x DSA boards are rated for an overprotection of 30 Vrms, which result in  a protection for peak voltages of sqrt(2)*30 = 42.4.

Related Links:
KnowledgeBase 1FMGTO0O: What Are the Voltage Ranges of the NI 4551/4552 and NI 4451/4452?

Products and Services: NI 446X Specifications


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Report Date: 08/01/2007
Last Updated: 08/26/2007
Document ID: 4C08JPJZ

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