SBAA051A January   1994  – April  2015 MSC1210Y2 , MSC1210Y3 , MSC1210Y4 , MSC1210Y5

 

  1.   Principles of Data Acquisition and Conversion
    1.     Trademarks
    2. 1 System Sampling Rate
      1. 1.1 Error Considerations
      2. 1.2 Aliasing Error
      3. 1.3 How Many Samples per Cycle?
      4. 1.4 Aperture Error
    3. 2 A Few A/D Converter Points
      1. 2.1 Accuracy
      2. 2.2 Selecting the Resolution
      3. 2.3 Resolution
    4. 3 Increasing System Throughput Rate
    5. 4 System Throughput Accuracy
    6. 5 Digital Codes
    7. 6 Summary

6 Summary

The criteria that determine the key parameters and performance requirements of a data acquisition and conversion system are:

  • Number of analog input channels;
  • Amplitude of data source signals;
  • Bandwidth of data;
  • Desired resolution of data; and,
  • End use of converted data.

Although this discussion did not treat all system criteria from a rigorous mathematical point of view, it does not identify and attempt to shed insight on the most important considerations from a practical viewpoint.