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IviDigitizer Configure Width Trigger Source [WT] (G Dataflow)

Last Modified: October 24, 2017

Configures the width trigger source, and the IviDigitizer Trigger Level, IviDigitizer Width Trigger Low Threshold, IviDigitizer Width Trigger High Threshold, IviDigitizer Width Trigger Polarity, and IviDigitizer Width Trigger Condition properties.

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A width trigger occurs when a pulse, that passes through Level, with a width between or outside, the width thresholds is detected.

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Note  

This node is part of the IviDigitizerWidthTrigger [WT] extension group.

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Width Condition (Within)

Specifies whether a pulse that is within or outside the user-specified thresholds arm waveform acquisition. This value sets the IviDigitizer Width Arm Condition property. Valid Values: - IVIDIGITIZER_VAL_WIDTH_WITHIN (1) Configures the digitizer to trigger on pulses that have a width that is less than the high threshold and greater than the low threshold. The end-user specifies the high and low thresholds with the IviDigitizer Width Arm High Threshold and IviDigitizer Width Arm Low Threshold properties. - IVIDIGITIZER_VAL_WIDTH_OUTSIDE (2) Configures the digitizer to trigger on pulses that have a width that is either greater than the high threshold or less than a low threshold. The end-user specifies the high and low thresholds with the IviDigitizer Width Arm High Threshold and IviDigitizer Width Arm Low Threshold properties. Default Value: IVIDIGITIZER_VAL_WIDTH_WITHIN (1)

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Threshold High (1.0)

Sets the width triggering high threshold in seconds. This value sets the IviDigitizer Width Trigger High Threshold property. Unit: volt Default Value: 1.0

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Trigger Level (1.0)

Specifies the trigger level. This value sets the IviDigitizer Trigger Level property. Unit: volt Default Value: 1.0

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Trigger Source ("")

Specifies the trigger source. This value sets the trigger source property. Users who want to achieve interchangeability should use a virtual trigger source name. The virtual trigger source name should be sufficiently specific to the test system such that it is unlikely to conflict with a physical trigger source name. Default Value: "" Note: You can specify the trace name as a string variable or as a literal enclosed in double quotes.

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Threshold Low (1.0)

Sets the width triggering low threshold, in seconds. This value sets the IviDigitizer Width Trigger Low Threshold property. Unit: volt Default Value: 1.0

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Width Polarity (Positive)

Sets the width polarity. This value sets the IviDigitizer Width Trigger Polarity property. Valid Values: - IVIDIGITIZER_VAL_WIDTH_POSITIVE (1) Configures the digitizer to trigger on positive pulses that have a width that meets the condition the user specifies with the IviDigitizer Width Trigger Condition property. - IVIDIGITIZER_VAL_WIDTH_NEGATIVE (2) Configures the digitizer to trigger on negative pulses that have a width that meets the condition the user specifies with the IviDigitizer Width Trigger Condition property. - IVIDIGITIZER_VAL_WIDTH_EITHER (3) Configures the digitizer to trigger on either positive or negative pulses that have a width that meets the condition the user specifies with the IviDigitizer Width Trigger Condition property. Default Value: IVIDIGITIZER_VAL_WIDTH_POSITIVE (1)

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instrument handle out

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

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instrument handle

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

Default: None

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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