Guralp Systems CMG-DCM build <10,000 - Manual (Page 164)

Acquisition Modules and Platinum Firmware Transmitting Data
User description: Sets the name of the service. If multiple instances are
created, this can be set to meaningful names for the data that each will be
handling.
Enable: Causes this service to start automatically when the system is
re-booted. If this check-box is cleared, the service will need to be started
manually (from the “Control” → “Services” menu)
Delete: Causes the configuration for this instance to be removed from the
system when the form is submitted.
Buffer size: GCF data from the compressor are held in a ring buffer from
which all client services, such as GCF transmitters or the mass storage device
recorder, read. The number in the field determines both how long a
communication link can be down before data are lost and the time interval
between “flush to disk” operations (which can affect power consumption).
The next section of this page, shown overleaf, contains a drop-down menu
and a table which allow the operator to control which channels are
transmitted and, optionally, renaming them.
Channels
Naming mode: The drop-down menu offers three choices:
• Automatic - all channels are compressed and named automatically:
Offers no filtering and uses the system-generated names for each
channel as forwarded by gdi­base.
• Semi-automatic - all channels are compressed, names may be mapped
below: One or more of the channels may be renamed by adding entries
to the mapping table. If you wish to use this mode, it may be useful first
MAN-EAM-0003 164 Issue E - February 2014