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Allocate Named Waveform (G Dataflow)

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Last Modified: September 26, 2018

Specifies the initial size of a named waveform so that it can be allocated in onboard memory before loading the associated data.

Programming Patterns

After this node allocates the size of the named waveform to onboard memory, data can then be loaded in smaller blocks using Write Waveform.

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waveform size

Size of the waveform in samples.

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session in

Handle that identifies your instrument session previously allocated by Initialize With Channels.

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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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channel name

Name of the waveform generator channel that the node uses.

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waveform name

Name of the waveform.

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session out

Reference to your instrument session to wire to the next node.

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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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waveform name out

Name of the named waveform.

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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