Guralp Systems CMG-DCM build <10,000 - Manual (Page 180)

Acquisition Modules and Platinum Firmware Transmitting Data
it must be converted into miniSEED format; this is done by the
gdi2miniseed module, known as the GDI Mini-SEED compressor.
12.2.1 The GDI Mini-SEED compressor
A default instance of the GDI Mini-SEED compressor is provided. Further
instances can be created if required for complex implementations. Although
the default instance is not set to start automatically, it is a necessary
prerequisite for both SEEDlink transmission and recording, so it will be
started as a dependant service when required.
To configure a GDI Mini-SEED compressor from the web interface, select:
Configuration → Services → Mini-SEED
or
Configuration → All options → System services → Mini-SEED
To configure a GDI Mini-SEED compressor from the command line, start
gconfig and select “System services” from the top level menu.
Now select gdi2miniseed - Mini-SEED compressor.
The screen shows a list of all Mini-SEED compressor instances that have been
configured:
Although the default instance is marked as “does not start automatically”, it
will be started if a dependant service is started.
You can reconfigure any existing compressor by clicking on its menu entry.
To configure a new Mini-SEED compressor instance, select Create new
service instance. The following screen allows you to configure the
parameters of the compressor. The first part of the screen is shown below.
MAN-EAM-0003 180 Issue E - February 2014