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IviACPwr Fetch Measurement [MSR] (G Dataflow)

Version:
    Last Modified: October 24, 2017

    Returns the value measured by a previous call to the IviACPwr Initiate Measurement VI. The IviACPwr Fetch Measurement VI returns a single measured value for the requested measurement type. Call this VI multiple times to retrieve the available measurement types and output phases. The available measurement types are divided into measurement groups. Use the IviACPwr Initiate Measurement VI to measure fresh values for that group.

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    instrument handle

    The instrument handle that you obtain from IviACPwr Initialize or IviACPwr Initialize With Options. The handle identifies a particular instrument session.

    Default: None

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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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    phase name

    Specifies the name of the output on which to configure the current limit.

    Pass the virtual output phase name that you assign to the instrument in the IVI Configuration utility.

    Users who want to achieve interchangeability should use a virtual output phase name. The virtual output phase name should be sufficiently specific to the test system such that it is unlikely to conflict with a physical output phase name.

    Virtual output phase names are aliases for instrument-specific output phase strings, which can differ from one instrument to another. With virtual output phase names, you can use and swap instruments without having to change the output phase names in your source code. Assign a virtual output phase name to an instrument-specific output phase through the IVI Configuration utility. This control accepts virtual output phase names you have assigned to the specific instrument you are using and also accepts the instrument-specific output phase names.

    Default Value: ""

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    Note  

    You can specify the output phase name as a string variable or as a literal enclosed in double quotes.

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    Measurement Type (Frequency)

    Specifies the type of measurement to return. Valid Values: Base Group: Voltage RMS L-N - IVIACPWR_VAL_MEASURE_VOLTAGE_RMS_LN (0) Voltage RMS line to neutral is measured. Current RMS - IVIACPWR_VAL_MEASURE_CURRENT_RMS (1) Current RMS is measured. Frequency - IVIACPWR_VAL_MEASURE_FREQUENCY (2) Frequency is measured. Voltage DC - IVIACPWR_VAL_MEASURE_VOLTAGE_DC (3) Voltage level is measured when in DC Only Mode. Current DC - IVIACPWR_VAL_MEASURE_CURRENT_DC (4) Current level is measured when in DC Only Mode. Power Factor - IVIACPWR_VAL_MEASURE_POWER_FACTOR (5) Power Factor is measured. Crest Factor - IVIACPWR_VAL_MEASURE_CREST_FACTOR (6) Crest Factor is measured. Current Peak - IVIACPWR_VAL_MEASURE_CURRENT_PEAK (7) Peak Current is measured. Power VA - IVIACPWR_VAL_MEASURE_POWER_VA (8) Power is measured in Volts-Amps. Real Power - IVIACPWR_VAL_MEASURE_POWER_REAL (9) Real Power is measured in Watts. Power DC - IVIACPWR_VAL_MEASURE_POWER_DC (10) Power is measured in Watts when in DC Only Mode. Phase Angle - IVIACPWR_VAL_MEASURE_PHASE_ANGLE (11) Phase Angle is measured in Degrees. Voltage RMS L-L - IVIACPWR_VAL_MEASURE_VOLTAGE_RMS_LL (12) Voltage RMS (line-to-line) is measured. Distortion Group: Current OHD - IVIACPWR_VAL_MEASURE_CURRENT_OHD (13) Current Odd Harmonics Distortion is measured. Current EHD - IVIACPWR_VAL_MEASURE_CURRENT_EHD (14) Current Even Harmonics Distortion is measured. Current THD - IVIACPWR_VAL_MEASURE_CURRENT_THD (15) Current Total (Odd+Even) Harmonic Distortion is measured. Voltage OHD - IVIACPWR_VAL_MEASURE_VOLTAGE_OHD (16) Voltage Odd Harmonics Distortion is measured. Voltage EHD - IVIACPWR_VAL_MEASURE_VOLTAGE_EHD (17) Voltage Even Harmonics Distortion is measured. Voltage THD - IVIACPWR_VAL_MEASURE_VOLTAGE_THD (18) Voltage Total (Odd+Even) Harmonic Distortion is measured. Default Value: Frequency - IVIACPWR_VAL_MEASURE_FREQUENCY (2)

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    instrument handle out

    The instrument handle that you obtain from IviACPwr Initialize or IviACPwr Initialize With Options.

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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.
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    measurement

    Returns the measured value.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: Not supported

    Web Server: Not supported in VIs that run in a web application


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