Table Of Contents

Store Calibration Internal Reference (G Dataflow)

Version:
    Last Modified: March 3, 2017

    For the NI 5112, this function allows you to store the measured internal reference voltage value.

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    session in

    The instrument handle that you obtain from Start Calibration. The handle identifies a particular instrument session.

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    error in

    Error conditions that occur before this node runs.

    The node responds to this input according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Default: No error

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    which reference

    The reference to store, fetch, or route.

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    internal reference

    The value of the internal reference stored during the last external calibration session.

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    session out

    Passes the instrument handle to the next node in the program. This parameter has the same value as session in.

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    error out

    Error information.

    The node produces this output according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Routing the Internal Reference

    The NI 5112 supports routing the internal reference to the front BNC connectors using Route Internal Reference Calibration. You can measure the internal reference with a DMM to verify it is within specification, then call this function to store the measured value in the EEPROM. Storing the internal reference allows you to track the drift of the internal reference over time. The reference value is stored for tracking purposes only, and is not used during the digitizer operation. The reference value is stored in the EEPROM as a 32-bit floating point number.

    Using Cal Store Internal Reference in an External Calibration Session

    This function requires an instrument handle returned from Start Calibration. The reference value is not written to the EEPROM until End Calibration is called with action set to Store Calibration. If this function is not called during an external calibration session, the internal reference value is set to zero in the EEPROM when Cal End is called with action set to Store Calibration. This process ensures consistent calibration count, date, and internal reference values in the EEPROM.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: Not supported


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