I am running AVSPC on a multisource file with 12 scans on the same source for a total duration of 3 hours. Each scan is of approxim- ately 15 minutes duration. I expected the output file to have 12 scans as well. Instead, it only contains three scans, each of 60 minutes duration. It appears that AVSPC concatenates identically named scans into 1 hour chunks. Gustaaf