AnalogMultiChannelReader.ReadWaveform Method (Int32)

public AnalogWaveform<double>[] ReadWaveform(
	int samplesPerChannel
)

Public Function ReadWaveform ( 
	samplesPerChannel As Integer
) As AnalogWaveform(Of Double)()

Parameters

samplesPerChannel

Type: SystemInt32
The number of samples to read. If you set samplesPerChannel to -1 for a continuous acquisition, the read retrieves all samples available in the buffer at the time of the read. If you set samplesPerChannel to -1 for a finite acquisition, the read behavior is set by the ReadAllAvailableSamples property of the DaqStream you are reading from.

Return Value

NI-DAQmx scales the returned data to the units of the measurement, including any custom scaling you apply to the channel. You specify these units with the create channel methods or the DAQ Assistant.

The data returned from analog waveform reads is affected by the WaveformAttributeMode property of the DaqStream you are reading from.

NI-DAQmx read and write methods time out after the amount of time specified by the Timeout property on the task you are reading from or writing to.

Refer to NI-DAQmx Readers and Writers for more information about memory limitations in NI-DAQmx read methods.

Reference