Table Of Contents

IviSpecAn Configure Trace Type (G Dataflow)

Last Modified: October 24, 2017

Configures the type of trace to acquire.

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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 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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trace name ("")

Pass the name of the trace you are configuring. This control accepts either a virtual repeated capability name or an instrument-specific trace name. Users who want to achieve interchangeability should use a virtual repeated capability name. The virtual repeated capability name should be sufficiently specific to the test system such that it is unlikely to conflict with a physical repeated capability name. Virtual repeated capability names are aliases for instrument-specific trace strings. The instrument-specific trace strings can differ from one instrument to another. Virtual repeated capability names allow you to use and swap instruments without having to change the trace names in your source code. You specify virtual repeated capability names in MAX. Default Value: ""

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trace type (Clear Write)

The type of trace to acquire. The driver sets the IviSpecAn>>Basic Operation>>Trace Type property to this value. Valid Values: IVISPECAN_VAL_TRACE_TYPE_CLEAR_WRITE - Sets the spectrum analyzer to clear previous sweep data off the display before performing a sweep. Subsequent sweeps may or may not clear the display first, but the data array at the end of the sweep is entirely new. IVISPECAN_VAL_TRACE_TYPE_MAX_HOLD - Sets the spectrum analyzer to keep the data from either the previous data or the new sweep data, which ever is higher. IVISPECAN_VAL_TRACE_TYPE_MIN_HOLD - Sets the spectrum analyzer to keep the data from either the previous data or the new sweep data, which ever is lower. IVISPECAN_VAL_TRACE_TYPE_VIDEO_AVERAGE - Sets the spectrum analyzer to maintain a running average of the swept data. IVISPECAN_VAL_TRACE_TYPE_VIEW - Disables acquisition into this trace but displays the existing trace data. IVISPECAN_VAL_TRACE_TYPE_STORE - Disables acquisition and disables the display of the existing trace data. Default Value: IVISPECAN_VAL_TRACE_TYPE_CLEAR_WRITE

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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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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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