Table Of Contents

IviFgen Configure FM Internal [FM] (G Dataflow)

Last Modified: October 24, 2017

Configures the properties that control the function generator's internal frequency modulation source. These properties are the modulation depth, waveform, and frequency.

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Note  

This node is part of the IviFgenModulateFM [FM] extension group.

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modulation waveform (Sine)

Pass the waveform you want to use to modulate the output signal. The driver sets the IVIFGEN_ATTR_FM_INTERNAL_WAVEFORM attribute to this value. Defined Values: IVIFGEN_VAL_FM_INTERNAL_SINE - Sinusoid waveform IVIFGEN_VAL_FM_INTERNAL_SQUARE - Square waveform IVIFGEN_VAL_FM_INTERNAL_TRIANGLE - Triangle waveform IVIFGEN_VAL_FM_INTERNAL_RAMP_UP - Positive ramp waveform IVIFGEN_VAL_FM_INTERNAL_RAMP_DOWN - Negative ramp waveform Default Value: IVIFGEN_VAL_FM_INTERNAL_SINE - Sinusoid waveform

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instrument handle

The instrument handle that you obtain from the IviFgen Initialize or IviFgen Initialize With Options Node. 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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peak deviation (100 Hz)

Pass the maximum frequency deviation you want the function generator to apply to the carrier waveform. This deviation corresponds to the maximum amplitude level of the modulating signal. The driver sets the IviFgen>>Frequency Modulation Attributes>>FM Internal Deviation [FM] property to this value. Units: Hertz (Hz) Default Value: 100.0

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modulation frequency (1000 Hz)

Specifies the frequency of the internal modulating signal. The driver sets the IviFgen>>Frequency Modulation Attributes>>FM Internal Frequency [FM] property to this value. Units: Hertz (Hz) Default Value: 1000 Hz

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instrument handle out

The instrument handle that you obtain from the IviFgen Initialize or IviFgen Initialize With Options Node. 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.

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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