Benchtop Measurement and Test
Distributed Measurement and Control
Systems Engineering Software
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Provides support for NI data acquisition and signal conditioning devices.
Provides support for Ethernet, GPIB, serial, USB, and other types of instruments.
Provides support for NI GPIB controllers and NI embedded controllers with GPIB ports.
The voltage read by the NI test tools and Voltmeter are both 3.3V, but the data read by python with nidaqmx is 2.0 or others. The problem only occurs in NI USB-6210, which doesn't occur in NI USB-6341.
Hahaha, I have solved the problem !!! The default setting of the input configuration is "difference", which is not right for us. What we need is "RSE". So in the python code, we should set the "terminal_config". like:
task = nidaqmx.Task()task.ai_channels.add_ai_voltage_chan("Dev2/ai0", min_val=-10, max_val=10, terminal_config=nidaqmx.constants.TerminalConfiguration.RSE)
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