When you have produced the file with DigiLite TS Generator, the filename will be something like DT_.#71
For SR500, just change # to Z = DT_.Z71
For SR667, change # to 3 and add 2 to the last digit of the filename = DT_.373
For SR750, change # to 4 and add 2 to the last digit of the filename = DT_.473
As for all SRs, up to 5 characters can be used in the filename after DT_
As well as those shown in the DigiLite Config symbol rate dropdown box, DigiLite v2.50 can operate at SRs of 250, 333 and 467, but the TS generator program does not work below SR500. Let me know if you need to generate SD card files for SR < 500.