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Running Self-Calibration

    Last Modified: July 19, 2019

    Running self-calibration enables the PXIe-5172 to yield full performance over its operating temperature range and two-year external calibration cycle.

    Before running self-calibration, warm up the PXIe-5172 for at least 15 minutes.


    Warm-up begins after the chassis and controller or PC is powered and NI-SCOPE is loaded and recognizes the PXIe-5172. In some RIO applications, the power consumed by the module can be significantly higher than the default image for the module. In these cases, you can improve performance by loading your image and configuring the device before warm-up time begins. Self-calibration is recommended following the specified warm-up time.

    PXIe-5172 modules are externally calibrated at the factory, but for optimal performance, use self-calibration in any of the following situations:

    • After first installing the PXIe-5172 in your chassis
    • After any module in the chassis is installed, uninstalled, or moved
    • When the system is in an environment where the ambient temperature varies or the module temperature has drifted more than ±5 °C from the previous self-calibration
    • To periodically adjust for small performance drifts that occur with product aging
    • When 90 days have elapsed since the previous self-calibration

    You can use the nodes on the NI-SCOPE External Calibration palette to programmatically return the date and module temperature of the previous self-calibration. You can also view this information by selecting the device in MAX.

    Self-calibrate the PXIe-5172 programmatically in NI-SCOPE or on demand in MAX.
    Option Description
    NI-SCOPE Use the Self Calibrate node to self-calibrate the module.
    MAX Select the device in the Devices and Interfaces menu and click the Self-Calibrate button.
    When the two-year external calibration interval expires, an external calibration is required to ensure performance that is within specification over the subsequent two years.

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