What is DAQmx in LabVIEW?

What is DAQmx in LabVIEW?

NI-DAQmx is an NI instrument driver that controls every aspect of your DAQ system, including signal conditioning, from configuration to programming in LabVIEW to low-level OS and device control.

How do I use user events in LabVIEW?

Create User Event Details If you wire a cluster to the user event data type input, LabVIEW uses the type name of the cluster as the name of the user event. The names and data types of the cluster elements define the event data the user event carries.

What is dynamic event in LabVIEW?

Dynamic event registration allows you to use VI Server references, such as Application, VI, or Control, to specify at run time the objects for which you want LabVIEW to generate events.

How do I launch NI-DAQmx?

You can launch the DAQ Assistant from MAX in the following ways:

1. Right-click Data Neighborhood and select Create New from the shortcut menu. In the Create New window, select NI-DAQmx Task.
2. Right-click your device under Devices and Interfaces in MAX and select Create Task.

What is event structure in LabVIEW?

An Event Structure is a primitive structure that can have multiple subdiagrams (also known as “Event cases”), one of which is selectively executed at runtime. The structure waits for an event to occur, or until the timeout elapsed. While it waits, it doesn’t take up any CPU time.

How do I open DAQmx in LabVIEW?

To launch the DAQ Assistant from a task name control in LabVIEW, complete the following steps:

1. Open a blank VI in LabVIEW.
2. Place the DAQmx task name control from the DAQmx Name Controls palette on the front panel.
3. Right-click the control and select New NI-DAQmx Task»MAX from the shortcut menu.

Where can I find NI DAQmx examples?

NI-DAQmx 8.5 and Later: Windows XP and 2000 examples are located at: \All Users \Documents\National Instruments\NI-DAQ\Examples\Visual Basic 6.0\…

What is TDMS in LabVIEW?

TDMS_Index. The TDMS_Index file provides consolidated information on all the attributes and pointers in the bulk data file, and speeds up access to the data while reading. In LabVIEW, you can choose from three interfaces to write data to the TDM data model.

How do I configure a DAQmx trigger?

Configures triggering for the task. The instances of this polymorphic VI correspond to the trigger and trigger type to configure. The DAQmx Trigger properties include all triggering options included in this VI, as well as additional triggering options. Use the pull-down menu to select an instance of this VI.

What is pretrigger samples per channel in DAQmx?

pretrigger samples per channel specifies the minimum number of samples to acquire per channel before recognizing the Reference Trigger. The number of post-trigger samples per channel is equal to number of samples per channel in the DAQmx Timing VI minus pretrigger samples per channel .

What is the difference between reference trigger and pretrigger samples per channel?

Trigger when the signal enters the window. Trigger when the signal leaves the window. pretrigger samples per channel specifies the minimum number of samples to acquire per channel before recognizing the Reference Trigger.

What is the difference between post-trigger samples and task out?

The number of post-trigger samples per channel is equal to number of samples per channel in the DAQmx Timing VI minus pretrigger samples per channel . task out is a reference to the task after this VI or function runs. If you wired a channel or list of channels to task/channels in, NI-DAQmx creates this task automatically.