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IviDownconverter Get Band Crossing Info [BCI] (G Dataflow)

Last Modified: October 24, 2017

Returns the band crossing information for sweeps. Sweep timing is influenced by points in the sweep where frequency bands are crossed. This node returns pairs of start/stop frequencies over which the sweep timing is constant. Sweep timing between different pairs of start/stop frequencies is variable. Thus, users may choose to use IviDownconverter Wait Until Settled between sweeps across bands. The bands are returned in ascending order of frequency. Use the IviDownconverter Number of Bands [BCI] property to determine how many pairs of frequencies will be returned by this node.

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instrument handle

The instrument handle that you obtain from the IviDownconverter Initialize or IviDownconverter 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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buffer size (2048)

Pass the number of elements in the start frequencies and stop frequencies arrays. Default Value: 2048

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actual number of frequencies

Indicates the number of frequency values returned in each frequency output array.

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instrument handle out

The instrument handle that you obtain from the IviDownconverter Initialize or IviDownconverter Initialize With Options Nodes. 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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start frequencies

A user-allocated buffer into which the start frequencies for each band are stored. Each value is paired with the corresponding element in the Stop Frequencies output array. The frequencies are returned in ascending order. Units: Hertz

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stop frequencies

A user-allocated buffer into which the stop frequencies for each band are stored. Each value is paired with the corresponding element in the Start Frequencies output array. The frequencies are returned in ascending order. Units: Hertz

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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