Guralp Systems CMG-DCM build <10,000 User Manual
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Acquisition Modules and Platinum Firmware
Monitoring Operations
The first column shows the time-that the block was received (not the
time-stamp on the block itself) and the second column shows the event type -
“GCF block received” in most cases.
The “Details” column shows the stream ID from the received data block and
the block time-stamp. The digitiser ID is shown if it is encoded in the block;
otherwise, a best guess is displayed. The rest of the entry shows the block
type, sample rate, compression level and the number of samples in the data
block.
A hexadecimal display of the block header is shown in the final column.
14.4.6 GDI Channels Display
It is often useful, particularly when configuring a acquisition module for a
complex array, to see a list of the Stream IDs, or channel names, which the
CMG-EAM is receiving. The GDI Channels Display feature allows you to view
a list of all active channels, together with some additional detail about each.
To access the GDI Channels Display from the web interface, select:
Tools → GDI Channels Display
Similar information is available from the command line via the command
gdi-dump -l but the format is optimised for automated processing rather
than human consumption. Giving the help option provides usage details.
Use of the web interface, however, is recommended.
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Issue E - February 2014