Data Acquisition Toolbox

Device Object Information

To display hardware information for a specific device object, you supply the device object as an argument to daqhwinfo. The hardware information for the analog input object ai created in the preceding section is given below.

• out = daqhwinfo(ai)
  out = 
                  AdaptorName: 'winsound'
                         Bits: 16
                     Coupling: {'AC Coupled'}
                   DeviceName: 'AudioPCI Record'
              DifferentialIDs: []
                        Gains: []
                           ID: '0'
                  InputRanges: [-1 1]
                MaxSampleRate: 44100
                MinSampleRate: 8000
               NativeDataType: 'int16'
                     Polarity: {'Bipolar'}
                   SampleType: 'SimultaneousSample'
               SingleEndedIDs: [1 2]
                SubsystemType: 'AnalogInput'
                TotalChannels: 2
      VendorDriverDescription: 'Windows Multimedia Driver'
          VendorDriverVersion: '5.0'
  

Among other things, this information tells you that the minimum sampling rate is 8 kHz, the maximum sampling rate is 44.1 kHz, and there are two hardware channels that you can add to the analog input object.

Alternatively, you can return hardware information via the Workspace browser by right-clicking a device object, and selecting Explore -> Display Hardware Info from the context menu.

Adaptor-Specific Information

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