Guralp Systems CMG-DCM build <10,000 - Manual (Page 159)

Acquisition Modules and Platinum Firmware Recording and Retrieving Data
and the mass storage device can be mounted and held in a powered-up state
by use of the Pt­storage facility, as described in section 11.3.1.2 on page
152.
Once the mass storage device is mounted, you can proceed to download files
by entering commands like
eam2010 ~ # sx path-to-file
and then immediately typing + followed by to activate
minicom's receive file function. Select “xmodem” from the resulting menu
and then enter a name for the downloaded file. The transfer should start
immediately with a progress indicator displayed:
HyperTerminal users should flush the buffers, mount the mass storage device,
type the command
eam2010 ~ # sx path-to-file
and then immediately select “Receive File...” from the “Transfer” menu. A
dialogue asking for the destination directory name is followed by another
asking for the destination file name:
MAN-EAM-0003 159 Issue E - February 2014