Hi,

there are different possibilities to achieve what you want. If the time between 2 subsequent acquisitions is not too short (>> 10 microseconds), you can save each acquired FID to the disk and advance the file pointer after each write operation so that the next data will not add to the existing data but rather be appended to it. The file created by TopSpin will then no longer be called "fid" but "ser". To achieve this, you do not use any longer the "mc" statement but rather use the "old-fashioned" command "wr" in your program.

This is a simple and nonsense example, but I hope it makes the point clear:

1 ze
2 d1
3 p1 ph1
go=2 ph31
d33 wr #0 if #0
lo to 3 times l4
exit

In this program, you start with your recycle delay (d1) and then you issue a pulse (p1). Afterwards you acquire your FID into the buffer by the go-statement. The data which is now in the buffer is then written to the disk by the wr-command. This happens during the delay d33. The "if"-argument means "increase file pointer". So this means that after writing the data to the disk, the next incoming data will be appended to what you just wrote. If you leave that out, the pointer is set to the beginning again and the next time everything will be added. This is also the argument that causes the creation of an "ser"-file instead of an "fid" file. Afterwards you loop to the position "3" l4-times, which means that the pulse is again issued, the fid is acquired again and the data is appended to the file.

So you have to adapt this to your needs. Please mind that writing data to the disk takes a while. If your pulse program reaches the wr-command before the previous wr-command has finished, you will get an error.

In the ser-file created, all of your acquired FIDs are saved sequentially. I hope this is the result that you were looking for.

If the time between acquisitions is too short to wait for the data to be written to disk, you need more than one data buffer. But even then the time cannot be infinitely short.