NI-DAQmx .NET Framework 4.0 API Reference

CounterSingleChannelReader.ReadMultiSamplePulseFrequency Method

  • Updated2023-02-21
  • 1 minute(s) read
CounterSingleChannelReader.ReadMultiSamplePulseFrequency Method
Reads one or more pulse samples in terms of frequency from a counter task.

Namespace:  NationalInstruments.DAQmx
Assembly:  NationalInstruments.DAQmx (in NationalInstruments.DAQmx.dll) Version: 20.7.40.49302

Syntax

public CIDataFrequency[] ReadMultiSamplePulseFrequency(
	int numberOfSamples
)
Public Function ReadMultiSamplePulseFrequency ( 
	numberOfSamples As Integer
) As CIDataFrequency()

Parameters

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

Return Value

Type: CIDataFrequency
A 1D array of pulse samples in terms of frequency from the task. Each element of the array corresponds to a sample from the task.

Exceptions

ExceptionCondition
DaqExceptionThe NI-DAQmx driver returned an error.
OutOfMemoryExceptionThere is not enough memory to carry out this operation.

Remarks

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.

See Also

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