Initiates an acquisition, waits for it to complete, and retrieves the data for a single channel and record.
Identifies a particular instrument session.
Error conditions that occur before this node runs.
The node responds to this input according to standard error behavior.
Standard Error Behavior
Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.
Default: No error
The channel from which to acquire data.
Channel String Syntax
The maximum number of samples to fetch for each waveform.
This function reads the actual record length and attempts to acquire all available samples. If the function fails to complete within the timeout period, the function returns an error. If the acquisition finishes with fewer points than requested, some devices return partial data if the acquisition finished, was aborted, or a timeout of 0 was used.
Fetching All Available Samples
Use -1 for this parameter if you want to fetch all available samples.
Default: -1
The time, in seconds, to wait for the data to be acquired.
Alternate Uses
Use 0 for this parameter to fetch whatever is currently available. Use -1 for this parameter to imply an infinite timeout.
Default: 5
Passes the instrument handle to the next node in the program. This parameter has the same value as session in.
Error information.
The node produces this output according to standard error behavior.
Standard Error Behavior
Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.
The timing and scaling information about the waveform.
The timestamp, in seconds, of the first fetched sample. This timestamp is comparable between records and acquisitions; devices that do not support this parameter use 0 for this output.
The time, in seconds, from the trigger to the first sample in the acquired waveform.
The time, in seconds, between two samples in the acquired waveform.
The offset factor of the given channel. Use for scaling binary data with the following formula:voltage = binary data x gain factor + offset
The gain factor of the given channel.Use for scaling binary data with the following formula: voltage = binary data × gain factor + offset.
A reserved value. Do not use.
A reserved value. Do not use.
A cluster containing the initial time value, time increment, and a waveform array.
The initial time value in the cluster is relative to the trigger. The relative initial time value is the time from the trigger to the first point, so the trigger always occurs at time equals zero.
The initial time value relative to the trigger, such that the trigger always occurs at time equals zero.
The time interval between two samples in the waveform. This value is 1 / sampling rate for time-domain acquisitions.
An array of waveform data containing one waveform.
Where This Node Can Run:
Desktop OS: Windows
FPGA: Not supported