Table Of Contents
niUSRP Fetch Rx Data (2D I16) (G Dataflow)
Fetches complex, 16-bit signed integer data from the specified channels. To use the niUSRP Fetch Rx Data (2D I16) node, you must set the Host Data Type property to I16.
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session handle
Your instrument session.
number of samples
Number of samples to fetch from the acquisition channel. For finite acquisitions, if you specify a value of -1, NI-USRP returns all the remaining samples. NI-USRP returns the samples when the requested number of samples is retrieved from the device or when the timeout is exceeded, whichever happens first.
timeout
The time to wait, in seconds, before returning an error if the requested number of samples have not been acquired.
Default: 10
error in (no error)
Error conditions that occur before this node runs. This input provides standard error in functionality.
status
A Boolean that is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred. Right-click the error in control on the front panel and select Explain Error or Explain Warning from the shortcut menu for more information about the error.
code
The error or warning code. Right-click the error in control on the front panel and select Explain Error or Explain Warning from the shortcut menu for more information about the error.
source
The origin of the error or warning. Right-click the error in control on the front panel and select Explain Error or Explain Warning from the shortcut menu for more information about the error.
channel list
The channel(s) from which to fetch the data.
session handle out
A reference to your instrument session to be passed to the next node.
data
The received baseband samples as an array of complex, 16-bit signed integer data. The real and imaginary components of the data correspond to the in-phase (I) and quadrature-phase (Q) data, respectively. I and Q are interleaved [I, Q, I, Q, ...] in the array. The total number of elements returned in the array equals (the value of the number of samples input x 2) x the number of channels. Each row of the 2D array corresponds to a separate channel.
timestamp
The timestamp of the first receive (Rx) sample returned and the time associated with the first sample of the waveform, according to the onboard device timer.
whole seconds
The integer number of seconds for the time associated with the first sample of the waveform, according to the onboard device timer.
fractional seconds
The double-precision, floating-point value representing the remaining fraction of a second for the time associated with the first sample of the waveform, according to the onboard device timer.
error out
Error information. This output provides standard error out functionality.
status
A Boolean that is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred. Right-click the error out indicator on the front panel and select Explain Error or Explain Warning from the shortcut menu for more information about the error.
code
The error or warning code. Right-click the error out indicator on the front panel and select Explain Error or Explain Warning from the shortcut menu for more information about the error.
source
The origin of the error or warning. Right-click the error out indicator on the front panel and select Explain Error or Explain Warning from the shortcut menu for more information about the error.
Where This Node Can Run:
Desktop OS: Windows
FPGA: Not supported