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Noise

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    Last Modified: August 16, 2021

    Wideband source noise

    <25 mV peak-to-peak in 20 V range, device configured for normal transient response, 10 Hz to 20 MHz, typical

    The following figures illustrate measurement noise as a function of measurement aperture for the PXIe-4135.

    Figure 1. Voltage Measurement Noise vs. Measurement Aperture, Nominal
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    Note  

    When the aperture time is set to 2 power-line cycles (PLCs), measurement noise differs slightly depending on whether the Power Line Frequency is set to 50 Hz or 60 Hz.

    Figure 2. Current Measurement Noise vs. Measurement Aperture, Nominal
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    Note  

    When the aperture time is set to 2 power-line cycles (PLCs), measurement noise differs slightly depending on whether the Power Line Frequency is set to 50 Hz or 60 Hz.

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    Note  

    Measurement noise vs. aperture plot measurements were taken with no load and no cabling. When using small aperture times, measurement noise may be impacted by system cabling.

    Figure 3. Measurement Noise, 10 nA Range, No Load, 0 V, 3 m Cables, Nominal
    Figure 4. Measurement Noise, 10 nA Range, 1 GΩ Load, 9 V, 3 m Cables, Nominal

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