Configure Global Virtual Channels - National Instruments SCC-68 User Manual

Configure Global Virtual Channels

If you want to use virtual channels in multiple NI-DAQmx tasks or
applications, configure global virtual channels with the DAQ Assistant.
You can launch the DAQ Assistant to create a global virtual channel in
MAX or in LabVIEW.
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The DAQ Assistant prompts you to create a new global virtual channel by
selecting an I/O type, such as analog input, the measurement or generation
to perform, the sensor applicable for that measurement, and the physical
channel from which to create a global virtual channel.
The DAQ Assistant prompts you to create a new global virtual channel.
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To open the DAQ Assistant in MAX, right-click Data Neighborhood
and select Create New. In the Create New window, select NI-DAQmx
Global Virtual Channel and click Next.
To open the DAQ Assistant directly in LabVIEW to create a global
virtual channel, drop a DAQmx Global Channel control on the front
panel, right-click it, and select New DAQmx Channel.
Select an I/O type, such as analog input.
Select the measurement or generation to perform.
Choose the sensor to use, if applicable for that measurement. A dialog
box opens for the task you have specified.
Select the physical channel from which to create a global virtual
channel. Alternatively, you can copy information from an existing
global virtual channel. Click Next.
Type the new global virtual channel name. Click Finish.
Configure the onboard CJC sensor, if necessary.
To use the onboard CJC sensor for thermocouple measurements,
ensure that the CJC sensor is wired to AI 7, then select Built-In for the
CJC source. If this option is not available, check your configuration.
For more information, refer to the
CJC sensor wiring instructions, refer to the
Sensor for Cold-Junction Compensation (CJC)
Select the terminal configuration. Refer to the
Measurement Considerations
setting.
Save your configuration.
Click Test. Verify your data in the window that opens. If the data is
incorrect, verify the settings in the DAQ Assistant window.
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Configuring the SCC-68 section. For
Using the Temperature
section.
Analog Input
section for more information about this
SCC-68 User Guide