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IviRFSigGen Configure ALC [ALC] (G Dataflow)

Last Modified: September 7, 2018

Configures the ALC (Automatic Level Control) of the signal generator's RF output.

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instrument handle

The instrument handle that you obtain from the IviRFSigGen Initialize Node or IviRFSigGen 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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source (Internal)

Specifies the source of the controlling voltage for the Automatic Level Control. The RF level at the sensor point is held constant. The driver uses this value to set the IviRFSigGen>>ALC>>ALC Source property. Defined Values: IVIRFSIGGEN_VAL_ALC_SOURCE_INTERNAL - The ALC is controlled by an internal measurement source. IVIRFSIGGEN_VAL_ALC_SOURCE_EXTERNAL - The ALC is controlled by an external voltage. Default Value: IVIRFSIGGEN_VAL_ALC_SOURCE_INTERNAL

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bandwidth (0.0)

Specifies the bandwidth of Automatic Level Control (ALC). Narrow bandwidth impoves noise and allows AM with modulation frequencies beyond bandwidth frequency. The value is coerced to reflect the ability of the current RF signal generator. The driver uses this value to set the IviRFSigGen>>ALC>>ALC Bandwidth property. Units: Hertz Default Value: 0.0

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instrument handle out

The instrument handle that you obtain from the IviRFSigGen Initialize Node or IviRFSigGen 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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