Guralp Systems CMG-CD24 - Manual (Page 22)

CMG-CD24
3. Issue the command FLUSH
This will download all data from the CD24 that it has not
already transferred. If you want to transfer the entire contents
of Flash memory, use the command FLUSHALL. For more
details, see section 5.11.3 on page 80.
4. Close the terminal session. If you are using Scream! or an EAM,
the CD24 should start transmitting immediately. Otherwise,
you may need to issue the command GO to start transferring
data.
2.5.1 Reading CD24 disks
The CD24 uses a special disk format, DFD, for recording data. This
format is also used by other Güralp digitisers such as the DM24.
You can read these data into a PC using Scream! or the Windows
gcfxtract utilities, which are freely available from the Güralp
Systems' web site. Linux and Solaris command line utilities are also
available for reading data from a DFD disk.
The DFD format is not the same as that used by the Güralp Systems
EAM data module, which uses either a FAT32-compatible journalling
file system or an ext3 file system.
Güralp Systems can provide fully tested disks with FireWire and USB
connectors. Alternatively, a third-party FireWire disk may be used
(although compatibility is not guaranteed.)
2.5.1.1 Reading CD24 Disks using SCREAM!
To read a disk with Scream!:
1. Attach the disk to your computer. You can use FireWire, USB,
or any other interface supported by your computer and the disk.
2. Run Scream!, and select File Setup... → from the main menu.
Select the Files tab.
3. Set the Base Directory, Filename Format and Data Format as
described above. Also, if required, set the Post-processor and
Granularity options to your preference. Consult the Scream!
documentation for details.
22 Issue C