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

1.1 Error Considerations

The application and ultimate use of the converted data determines the required sampling and conversion rate of the data acquisition and conversion system. System sampling rate is determined, as shown in Figure 1, by the highest bandwidth channel, the number of data channels and the number of samples per cycle.

Figure01_sbaa051.gifFigure 1. Determining Minimum System Sampling Rate