Guralp Systems CMG-6TD - Manual (Page 17)

CMG-6TD First encounters
Be sure to allow enough time for all the data to transfer. The 6TD
should be able to transfer data at a sustained rate of around 10 Mb/s, so
a full 8 Gb CMG-6TD instrument should take around 12 minutes to
transfer all its data.
MAN-T60-0002 17 Issue F - February 2014