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Measure RIS Distribution Calibration (G Dataflow)

Last Modified: September 15, 2017

Takes an acquisition from a specified channel and retrieves the initial X value, which includes the time-to-digital conversion.

This function performs the acquisition by calling Read Waveform 2,000 times. The time-digital conversion should be a uniform distribution between two sample points, because triggers should occur randomly. To test this distribution, the distribution of initial X values is created. The percentage of triggers in the smallest bin of this distribution is returned for comparison to a specification to determine if RIS is operating correctly.

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session in

The instrument handle that you obtain from Start Calibration. The handle identifies a particular instrument session.

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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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maximum time

The maximum time, in milliseconds, to allow for each acquisition.

Default: 10000

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channels

The channel to calibrate.

Channel String Syntax

This input parameter has the following options:

  • A single channel, such as 0.
  • A list of channels, such as 0,1 or 3,2,1,0
  • A range of channels, such as 0-7 or 0:7.
  • All channels, which is designated by an empty string.
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Note  

The order of channels in a list is important. The attributes are set on the channels in the order they occur in the string.

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distribution size

The number of bins in the initial x distribution.

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session out

Passes the instrument handle to the next node in the program. This parameter has the same value as session in.

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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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minimum bin percent

The percent of triggers in the minimum bin. Valid values are between 0 and 100.0

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distribution array

The distribution of trigger times.

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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