Table Of Contents

Configure Frequency List (G Dataflow)

Last Modified: May 16, 2018

Configures the properties of the waveform generator that affect frequency list generation, selecting the frequency list to produce and setting the amplitude, DC offset, and start phase.

The waveform generator must not be in the Generating state when you call this node.

Programming Patterns

You must set the output mode input of Configure Output Mode to frequency list before calling this node.

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DC offset

The DC offset of the standard waveform that you want the waveform generator to produce in volts (V). The DC Offset property sets to this value.

This value is the offset at the output terminal. As an example, to configure a waveform with an amplitude of 10.00 V to range from 0.00 V to +10.00 V, set DC offset to 5.00 V.

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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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frequency list reference

Handle of the frequency list you want the waveform generator to produce.

You can create multiple frequency lists using Create Frequency List, which returns a reference that you use to identify each list.

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amplitude

Amplitude of the standard waveform that you want the waveform generator to produce in Vpk-pk. The Amplitude property sets to this value.

This value is the amplitude at the output terminal. As an example, to produce a waveform ranging from -5.00 V to +5.00 V, set amplitude to 10.00 V.

Behavior with DC Waveform Type

This input does not affect waveform generator behavior if you set the waveform input of Create Frequency List to DC.

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start phase

The horizontal offset of the standard waveform that you want the waveform generator to produce in degrees of one waveform cycle. The Start Phase property sets to this value

A start phase of 180 degrees means output generation begins halfway through the waveform. Whereas a start phase of 360 degrees offsets the output by an entire waveform cycle and is therefore identical to a start phase of 0 degrees.

Behavior with DC Waveform Type

This input does not affect waveform generator behavior if you set the waveform input of Configure Standard Waveform or Create Frequency List to DC.

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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.

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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