You can define a frequency list file in ../topspin/exp/stan/nmr/list/f1, f2, f3
there you make a file containing
O BaseFrequency of H offset 1 offset 2 . .
.
0 600.15 2700
4200
0 600.15
2700
4200
Once you have the file, you should put 'fq1' command in a pulseprogram (fq1:f1) and define the list file in acquisition menu under 'lists'. Check noediff, std-related pulseprograms in Bruker PP library.