Onboard Signal Processing (5142):DDC:Fetch Interleaved IQ Data

Short Name: Fetch Interleaved IQ Data

Specifies whether a fetch call retrieves a single waveform with I and Q interleaved, or two separate waveforms. If set to TRUE, the number of elements returned by scalar fetch types (such as 16-bit integer) is twice the requested number of samples. If set to FALSE during DDC acquisitions in Complex mode, two noninterleaved arrays of data are returned per channel, per record.

Note  This attribute can be used only with high-speed digitizers that support onboard signal processing (OSP). NI-SCOPE returns an error if you use this attribute with a device that does not support OSP.

Default Value: TRUE

Defined Values

VI_TRUE—A scalar fetch returns an array of waveforms in the following format: IQIQIQ...

VI_FALSE—A scalar fetch returns an array of waveforms in the following format: III...QQQ...

Remarks

The following table lists the characteristics of this property.