Trigger Detector (G Dataflow)

The edge or slope in which the node detects the trigger.

This input accepts a ring or a 1D array of rings. This input accepts a 1D array of rings when signal is a 1D array of waveforms or a 2D array of double-precision, floating-point numbers.

Default: rising

A Boolean specifying whether the history, or internal state, of the node has to be reset.

This input accepts a Boolean or a 1D array of Booleans. This input accepts a 1D array of Booleans when signal is a 1D array of waveforms or a 2D array of double-precision, floating-point numbers.

The internal state contains the final state of the input signal. This node uses this as the initial state the next time this node is called.

Default: False

Input signal.

This input accepts the following data types:

• Waveform
• 1D array of waveforms
• 1D array of double-precision, floating-point numbers
• 2D array of double-precision, floating-point numbers

The threshold value that the input signal must cross before a trigger is detected.

This input accepts a double-precision, floating-point number or a 1D array of double-precision, floating-point numbers. This input accepts a 1D array of double-precision, floating-point numbers when signal is a 1D array of waveforms or a 2D array of double-precision, floating-point numbers.

Default: 0

Amount above or below the threshold level through which the input signal must pass before a trigger level crossing is detected.

This input accepts a double-precision, floating-point number or a 1D array of double-precision, floating-point numbers. This input accepts a 1D array of double-precision, floating-point numbers when signal is a 1D array of waveforms or a 2D array of double-precision, floating-point numbers.

Default: 0

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

Sample period of the time-domain signal in seconds.

Set this input to 1/fs, where fs is the sampling frequency of the time-domain signal.

This input is available only if you wire a 1D array of double-precision, floating-point numbers or a 2D array of double-precision, floating-point numbers to signal.

Default: 1

Mode in which to retrieve the trigger location.

This input accepts a ring or a 1D array of rings. This input accepts a 1D array of rings when signal is a 1D array of waveforms or a 2D array of double-precision, floating-point numbers.

Default: Index

A Boolean that determines whether the node detected a valid trigger.

This output can return a Boolean or a 1D array of Booleans.

The index or time of the detected trigger.

This output can return a double-precision, floating-point number or a 1D array of double-precision, floating-point numbers.

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.