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Sinking Power vs. Ambient Temperature Derating

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    Last Modified: November 30, 2020

    The following figure illustrates sinking power derating as a function of ambient temperature. This applies to the PXIe-4139 (20W) when used with any chassis and only applies to the PXIe-4139 (40W) when used with a chassis with slot cooling capacity <58 W.

    Figure 1. Sinking Power vs. Ambient Temperature Derating
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    Note  

    When using the PXIe-4139 (40W) with a chassis with slot cooling capacity ≥58 W, ambient temperature derating does not apply.


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