Channel View
The Channel View is a central location for viewing and configuring hardware and shared variables. When you launch LabVIEW SignalExpress, the application automatically detects installed or simulated NI-DAQmx devices, NI-DMM devices, and NI switch modules and displays the devices in the Channel View. You also can import and export Channel View data from Microsoft Excel spreadsheets.
In the default layout, the Channel View is a supplementary view that appears below the primary view as a table with two columns: Physical Channel and Acquire. LabVIEW SignalExpress displays the devices it detects in the Physical Channel column.
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Note If LabVIEW SignalExpress does not detect any installed or simulated NI-DAQmx devices, NI-DMM devices, or NI switch modules, the Channel View does not appear in the default layout. If you display the Channel View with no supported hardware present, the Channel View appears empty. |
Use the View pull-down menu at the top of the Channel View to specify whether to display hardware or shared variables. If you select Shared Variables from the View pull-down menu, the Shared Variable Name and the Sample Period (s) columns appear.
The Acquire column contains checkboxes that specify whether to acquire signals from hardware or read the values of shared variables. When you place a checkmark in the Acquire checkbox for a hardware item, LabVIEW SignalExpress adds an Acquire Signals step to the Project View and additional columns appear with item-specific configuration options. When you place a checkmark in the Acquire checkbox for a shared variable, LabVIEW SignalExpress adds a Read Shared Variables step to the Project View or, if a Read Shared Variables Step already exists, adds the value of the shared variable as an output of the existing step.
If the Channel View is not visible, select View»Channel View to display the Channel View.
Configuring Items from the Properties Window
You can use the Properties window to configure channels, devices, or shared variables. The Properties window displays the configuration options for the device(s), channel(s), or shared variable(s) you select in the Channel View. If you select multiple items, the Properties window displays all the configuration options the items share so you quickly can update values for all the items. For example, if the Channel View shows that you are measuring voltage on 10 channels and you want to measure resistance on those 10 channels, you can select all 10 channels and use the Properties window to update the measurement type once instead of on each individual channel.
If the Properties window is not visible, select View»Properties to display the Properties window. For hardware devices, as you make changes in the Properties window, the Channel View table displays new columns with the appropriate configurable options for the selected measurement.