Truncation Error and Apodization

Waiting 6+ min to process a basic 2-D H COSY NMR data set is never going to be something we want to do. 

In practice, for the acquisition of 2-D NMR data sets, we limit the collection of the time domain data to 2 k (2048) or 4 k (4096) data points. In the case of the collection of 2-D HMQC and HSQC 

NMR data sets, we may want to further restrict the number of data points we collect to keep the acquisition time as short as possible (perhaps 150 ms), because the extended use of decoupling with the RF channel of the NMR may result in excessive RF heating of the sample and/or probe damage. 

Because the application of the apodization function can be done after an NMR data set has been collected, we are free to experiment rvith different functions to evaluate the effect various functions have on the quality of the processed NMR data. We always disclose exacdy what post-acquisition processing has taken place to generate our final spectrum, and many researchers, research advisors, supervisors, reviewers, and regulators do not hold excessive and/or fancy NMR data processing manipulations in high regard. It is best to keep our NMR processing 

Apodization function. Syn. window function. The mathematical function multiplied by the time domain signal. 

---