AnalogMultiChannelWriter.WriteMultiSample Method
- Updated2023-02-21
- 2 minute(s) read
AnalogMultiChannelWriterWriteMultiSample Method
Namespace: NationalInstruments.DAQmx
Assembly: NationalInstruments.DAQmx (in NationalInstruments.DAQmx.dll) Version: 20.7.40.49302
Syntax
public void WriteMultiSample( bool autoStart, double[,] data )
Public Sub WriteMultiSample ( autoStart As Boolean, data As Double(,) )
Parameters
- autoStart
- Type: SystemBoolean
If set to this method automatically calls Start if you do not explicitly call it. You cannot set this parameter to if you have installed events on the task. - data
- Type: SystemDouble
A 2D array of samples to write to the task. Each element in the first dimension of the array corresponds to a channel in the task. Each element in the second dimension of the array corresponds to a sample to write to each channel. The order of the channels in the array corresponds to the order in which you add the channels to the task.
Exceptions
| Exception | Condition |
|---|---|
| DaqException | The NI-DAQmx driver returned an error. |
| IndexOutOfRangeException | data has a non-zero lower bound. |
Remarks
NI-DAQmx scales the generated 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.
If the task uses on-demand timing, this method returns only after the device generates all samples. If the task uses any timing type other than on-demand, this method returns immediately and does not wait for the device to generate all samples. Your application must call the WaitUntilDone method to block until the device has generated all samples.
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.