Guralp Systems CMG-3ESPCD - Manual (Page 24)

CMG-3ESPCD Digital Broadband Seismometer Installing the 3ESPCD
Alternatively, for more downloading options, issue the command DISKMENU
from the digitiser's console before attaching the disk. See Section 6.7 on page
71 for more information. You can use DISKMENU to download any section of
data, whether or not it has already been transferred.
While the FireWire interface is active, it will consume about 200 mA of power
(from a 12 V supply). If you interrupt a transfer whilst in progress, the
digitiser will re-boot, but the data held in memory will not be affected.
To download data over the serial link:
1. Open the digitiser's console. To do this using Güralp Systems' Scream!
software, right-click on the digitiser's icon (once it appears) and select
Terminal....
Alternatively, from a Güralp EAM, issue the command
data-terminal
2. If you want to download all data held in the Flash memory, issue the
command
ALL-FLASH ALL-DATA DOWNLOAD
3. Alternatively, select a particular set of streams, sample rates and times
to download using the STREAM, S/S, FROM­TIME and TO­TIME
commands, and finish with DOWNLOAD. See Section 6.7 on page 71 for
more information.
4. Close the terminal session. If you are using Scream! or an EAM, the
digitiser should start transmitting immediately. Otherwise, you may
need to issue the command GO to start transferring data.
3.8.2 Reading digitiser disks
The digitiser uses a special disk format, DFD, for recording data. You can
read this data into a PC using Scream! or the GCFXtract utility, which is freely
available from the Güralp Systems Web site.
Note: The DFD format is not the same as that used by the Güralp
Systems EAM data modules, which use a FAT32-compatible or extn
journalling 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.)
3.8.2.1 Reading disks with GCFXtract
To read a disk using GCFXtract:
MAN-C3E-0002 24 Issue B - November 2013