Table Of Contents

Configure Waveform Acquisition (G Dataflow)

Last Modified: September 16, 2017

Configures the DMM for waveform acquisitions.

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session in

Instrument identifier from previous NI-DMM nodes.

Default: None

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function

Measurement function used in a waveform acquisition.

NI-DMM sets the Function property to this value.

Name Description
1003 Waveform Voltage
1004 Waveform Current

Default: Waveform Voltage (1003)

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rate

Rate of the acquisition in samples per second.

NI-DMM sets the Waveform Rate property to this value. The valid rate is calculated by dividing 1,800,000 by an integer divisor, and the rate falls between 10 and 1,800,000 samples per second. The waveform rate is coerced upwards to the next valid rate.

Default: 1,800,000

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waveform points

Number of points to acquire before the waveform acquisition completes.

NI-DMM sets the Waveform Points property to this value.

Default: 500

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range

Expected maximum amplitude of the input signal and range for the measurement function.

NI-DMM sets the Range property to this value. Range values are coerced up to the closest input range.

Auto Range is not supported during waveform acquisitions.

Refer to the help manual for your DMM for valid ranges.

Default: 10.0

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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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session out

Instrument identifier for subsequent NI-DMM nodes.

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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

Hardware Support:

This node is supported by the following modules:

  • PXI-4070
  • PXI-4071
  • PXI-4072
  • PXIe-4080
  • PXIe-4081
  • PXIe-4082

For the PXIe-4080, PXIe-4081, and PXIe-4082, setting waveform points to 0 causes the waveform points to be acquired continuously.


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