Read Waveform (1D U32)
- Updated2023-02-17
- 3 minute(s) read
Read Waveform (1D U32)
Returns data as an array of unsigned 32-bit integers.
Inputs/Outputs
session in
Instrument session obtained from the Initialize Acquisition Sessionnode, the Initialize Generation Sessionnode, or the Initialize External Calibrationnode.
samples to read
The specified number of samples to fetch.
If you specify a value for samples to read that is greater than the number of samples in the device memory, NI-HSDIO returns the samples that are acquired after max time milliseconds. Setting this parameter to -1 acquires the samples per record specified in the niHSDIO Configure Acquisition Sizenode.
maximum time (ms)
The time, in milliseconds, allotted for the node to complete before NI-HSDIO returns a timeout error.
If you set the value to -1, the node never times out. If you set this parameter to 0, the node returns immediately with up to the number of samples specified in samples to read.
If samples to read is greater than the number of samples in the device memory and all the available samples are acquired before a timeout, NI-HSDIO returns the available samples.
Default value: 10000
record to fetch
Parameter that specifies which record you want to fetch from onboard memory.
error in
Error conditions that occur before this node runs.
The node responds to this input according to standard error behavior.
Default value: No error
session out
Handle that identifies the session in all subsequent node calls.
The session out parameter is obtained from the Initialize Acquisition Sessionnode or the Initialize Generation Sessionnode.
data
The returned acquired waveform.
number of samples read
The number of samples that were successfully acquired and transferred into data.
error out
Error information.
The node produces this output according to standard error behavior.