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IviACPwr Fetch Measurement Array [MSR] (G Dataflow)

Last Modified: October 24, 2017

Returns the values measured by a previous call to the IviACPwr Initiate Measurement VI. The IviACPwr Fetch Measurement Array VI returns an array of measured values of 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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Measurement Buffer Size

Specifies the size of the user-allocated measurement array.

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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 (Array Current Cycle)

Specifies the type of measurement to return. Valid Values: Harmonic Group: Array Current Harmonic Phase - IVIACPWR_VAL_MEASURE_ARRAY_CURRENT_HARMONIC_PHASE (0) Current Harmonic Phase Angles are measured in degrees. Array Current Harmonic Magnitude Absolute - IVIACPWR_VAL_MEASURE_ARRAY_CURRENT_HARMONIC_ABS (1) Current Harmonic Magnitudes are measured as an absolute value in RMS Amps. Array Current Harmonic Magnitude Percent Fundamental - IVIACPWR_VAL_MEASURE_ARRAY_CURRENT_HARMONIC_PCT (2) Current Harmonic Magnitudes are measured as a Percent of fundamental. Array Voltage Harmonic Phase - IVIACPWR_VAL_MEASURE_ARRAY_VOLTAGE_HARMONIC_PHASE (3) Voltage Harmonic Phase Angles are measured in Degrees. Array Voltage Harmonic Magnitude Absolute - IVIACPWR_VAL_MEASURE_ARRAY_VOLTAGE_HARMONIC_ABS (4) Voltage Harmonic Magnitudes are measured as an absolute value in RMS Volts. Array Voltage Harmonic Magnitude Percent Fundamental - IVIACPWR_VAL_MEASURE_ARRAY_VOLTAGE_HARMONIC_PCT (5) Voltage Harmonic Magnitudes are measured as a percent of the fundamental. Waveform Group: Array Current Cycle - IVIACPWR_VAL_MEASURE_ARRAY_CURRENT_CYCLE (6) Single cycle of the current waveform in Amps. Array Voltage Cycle - IVIACPWR_VAL_MEASURE_ARRAY_VOLTAGE_CYCLE (7) Single cycle of the Voltage Waveform in Volts. Default Value: Array Current Cycle - IVIACPWR_VAL_MEASURE_ARRAY_CURRENT_CYCLE (6)

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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 data array.

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Measurement Actual Size

Returns the number of values stored in the measurement array.

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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