Table Of Contents

IviDigitizer Configure Runt Trigger Source [RT] (G Dataflow)

Last Modified: October 24, 2017

Configures the runt trigger. A runt occurs when the trigger signal crosses one of the runt thresholds twice without crossing the other runt threshold.

The end-user specifies the runt thresholds in the Threshold Low and Threshold High inputs. The end-user specifies the polarity of the runt in the Runt Polarity parameter.

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Note  

This node affects instrument behavior only if the trigger type is runt trigger. Set the trigger type and trigger coupling before calling this node.

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Note  

This node is part of the IviDigitizerRuntTrigger [RT] extension group.

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Threshold High (1.0)

Sets the runt triggering high threshold in volts. Unit: volt Default Value: 1.0

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Runt Polarity (Positive)

Sets the runt polarity. This value sets the IviDigitizer Runt Trigger Polarity property. Valid Values: - IVIDIGITIZER_VAL_RUNT_POSITIVE (1) The digitizer triggers on a positive runt. A positive runt occurs when a rising edge crosses the low runt threshold and does not cross the high runt threshold before re-crossing the low runt threshold. - IVIDIGITIZER_VAL_RUNT_NEGATIVE (2) The digitizer triggers on a negative runt. A negative runt occurs when a falling edge crosses the high runt threshold and does not cross the low runt threshold before re-crossing the high runt threshold. - IVIDIGITIZER_VAL_RUNT_EITHER (3) The digitizer triggers on either a positive or negative runt. Default Value: IVIDIGITIZER_VAL_RUNT_POSITIVE (1)

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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 runt triggering low threshold in volts. Unit: volt Default Value: 1.0

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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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