Hi Hong Jihun,
Here are a few troubleshooting steps you can try that might resolve your issue:
- Check if your device is supported by the "Data Acquisition Toolbox" of MATLAB. You may refer to the following documentation for more details: https://www.mathworks.com/help/daq/install-hardware-support-package-for-vendor-support.html.
- Make connections to your device and run the commands "daq.getVendors" and "daq.getDevices" to check whether you can see your device listed correctly.
- You will need to install the support package specific to your vendor and device. Ensure that you install the required hardware support package from the Add-Ons library.
- Start the "Analog Input Recorder," and you should be able to see your devices and the graphs.