Guralp Systems CMG-DCM build <10,000 - Manual (Page 53)

Operator's Guide
The gdi­base and gdi­record programs are designed to be
stateless, so that the data on the disk are always consistent. This
means the system is tolerant of the power or disk being removed at any
time.
Any number of input modules can be configured to acquire data in
any supported format from any source, simultaneously. These
modules convert their data and pass it to the multiplexor. Data can be
acquired in any of the following formats, from multiple sources:
●
BRP via serial lines;
●
Scream via 100BaseTX Ethernet or ppp;
●
GDI-link via 100BaseTX Ethernet or ppp; and
●
CD1.1
The architecture has been designed to support the addition of extra
formats simply by adding input modules. Please contact Güralp
Systems if you have requirements which are currently unsupported.
Any number of output modules can be configured to send data in any
supported format to any destination. The following data formats are
supported:
●
GCF output via serial port or TCP stream;
●
GCF output via Scream (TCP or UDP);
●
GDI (Güralp Data Interconnect);
●
GDI-link;
●
CD1.1;
●
WIN format output;
●
QSCD - Quick Seismic Characteristic Data (designed by KIGAM)
output; and
●
GSMS (Güralp Seismic Monitoring System) output.
In the default, factory configuration, the CMG-EAM is configured to
receive serial GCF input on all of its serial ports except Data Out.
There is a single chain of data through the multiplexor to a Scream
server. Data are also recorded to disk in GCF format. This is shown in
the following diagram:
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