Table Of Contents

Configure Data Position (G Dataflow)

Last Modified: September 27, 2017

Configures the various ways the data is clocked relative to the Sample clock.

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session in

Instrument session obtained from the Initialize Acquisition Session node, the Initialize Generation Session node, or the Initialize External Calibration node.

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channel list

The channels you want to apply settings to. Leave channel list blank to apply to all channels.

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position

The edge of the Sample clock signal used to time the operation. You can also configure the device to generate data at a configurable delay past each rising edge of the Sample clock.

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Note  

Delay from Sample Clock Rising Edge has more jitter than the rising or falling edge values.

Name Description
Sample Clock Rising Edge

The device samples or generates data on the rising edge of the Sample clock.

Sample Clock Falling Edge

The device samples or generates data on the falling edge of the Sample clock.

Delay from Sample Clock Rising Edge

The device samples or generates data with a delay from the rising edge of the Sample clock.

Specify the delay using the delay parameter of the niHSDIO Configure Data Position Delay VI.

Configuring position with your hardware

Certain devices have sample clock frequency limitations when a custom delay is used. Refer to the device documentation for more information about these limitations.

To configure a delay on PXI/PXIe-656X devices, you must delay all channels on the device. NI-HSDIO returns an error if you apply a delay to only a partial channel list.

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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

Handle that identifies the session in all subsequent node calls.

The session out parameter is obtained from the Initialize Acquisition Session node or the Initialize Generation Session node.

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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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