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noise sources are reduced by the common-mode rejection of the NI PXIe-4357. Noise sources
that couple into the measurement as normal mode signals can be further reduced by the digital
filtering on the NI PXIe-4357. Refer to the NI PXIe-4357 Specifications document for the filter
and common-mode rejection specifications.
Measuring Temperature with the DAQ Assistant
The following procedure assumes you have already installed NI-DAQmx and
Note
connected the RTD sensor to your device. Refer to the
well as the NI PXIe-4357 and TB-4357 Installation Guide and Terminal Block
Specifications document for pinouts and additional signal connection content.
To measure temperature using the DAQ Assistant, do the following:
1.
In MAX, right-click Data Neighborhood, and select Create New from the shortcut menu.
Select NI-DAQmx Task in the Create New window, and click Next.
Within LabVIEW, LabWindows/CVI, Measurement Studio, or LabVIEW
Note
Signal Express, you can also access the DAQ Assistant. Refer to the NI-DAQmx
Help, which is installed by default at Start»All Programs»National Instruments»
NI-DAQ, for additional information.
2.
Select Acquire Signals»Analog Input»Temperature»RTD.
3.
Select a physical channel for the NI PXIe-4357 and click Next. The physical channel is the
terminal at which you measure an analog signal.
4.
Enter a name, such as
5.
In the configuration tab, specify the input range, RTD type, nominal resistance, and wiring
configuration. The default internal excitation is 0.9 mA.
6.
Click Save.
You have now created a task.
A task is a software entity that encapsulates the physical channels—the
Note
terminals at which you measure an analog signal—along with other channel-specific
information such as the range, terminal configuration, and custom scaling. A task
also includes timing and triggering.
7.
To start the measurement, click Run.
myTemperatureTask
Connecting Signals
, and click Finish.
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NI PXIe-4357 User Manual
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