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IviPwrMeter Fetch (G Dataflow)

Last Modified: October 24, 2017

Returns the result from a previously initiated single or dual channel measurement.

Call the IviPwrMeter Initiate.vi to initiate a measurement before calling this node.

After this node executes, the value of Reading depends on the math operation specified in IviPwrMeter Configure Measurement.

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Note  

This node does not check the instrument status. Typically, you call this node only in a sequence of calls to other low-level driver nodes. The sequence performs one operation. You use the low-level nodes to optimize one or more aspects of interaction with the instrument. If you want to check the instrument status, call IviPwrMeter Error-Query at the conclusion of the sequence.

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Note  

If an out-of-range condition occurs on one or more enabled channels, the result is a value indicating that an out of range condition occurred. In such a case, Reading contains an IEEE defined -Inf (Negative Infinity) or +Inf (Positive Infinity) value and the node returns the Under Range (0x3FFA2001) or Over Range (0x3FFA2002) warning. Test if the measurement value is out of range with IviPwrMeter Query Result Range Type.

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instrument handle

Instrument handle that you obtain from IviPwrMeter Initialize or IviPwrMeter 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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instrument handle out

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

Default: None

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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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reading

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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