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IviSpecAn Configure Trigger Source [TRG] (G Dataflow)

Last Modified: October 24, 2017

Specifies the trigger source that causes the spectrum analyzer to leave the Wait-for-Trigger state.

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trigger source (Immediate)

Specifies the source of the trigger signal that causes the analyzer to leave the Wait-For-Trigger state. The driver uses this value to set the IviSpecAn>>Trigger>>Trigger Source property. Valid Values: - IVISPECAN_VAL_TRIGGER_SOURCE_EXTERNAL - The spectrum analyzer waits until it receives a trigger on the external trigger connector. - IVISPECAN_VAL_TRIGGER_SOURCE_IMMEDIATE - The spectrum analyzer does not wait for a trigger of any kind. - IVISPECAN_VAL_TRIGGER_SOURCE_SOFTWARE - The spectrum analyzer waits until the Send Software Trigger function executes. - IVISPECAN_VAL_TRIGGER_SOURCE_AC_LINE - The spectrum analyzer waits until it receives a trigger on the AC line. - IVISPECAN_VAL_TRIGGER_SOURCE_VIDEO - The spectrum analyzer waits until it receives a video level. Default value: IVISPECAN_VAL_TRIGGER_SOURCE_EXTERNAL

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instrument handle out

The instrument handle that you obtain from the IviSpecAn Initialize Node or IviSpecAn Initialize With Options Node. The handle identifies a particular instrument session.

Default: None

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instrument handle

The instrument handle that you obtain from the IviSpecAn Initialize Node or IviSpecAn 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.
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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

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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