Guralp Systems CMG-DCM - Manual (Page 59)

Operator's guide
Finally, at the bottom of the page, is a table headed Shared Memory
Diagnostics. This table lists the number of blocks which have passed
through the DCM's internal shared memory areas. One shared memory
space is allocated to each input port, but extra areas may also exist.
The entries in this table give the key index of each shared memory
area, its name (if it has one – this may be taken from its allocated port),
and the number of data, status and CD blocks received.
The “Bad blocks” column reports how many corrupt blocks have been
detected in this shared memory area. A “bad block” is either one which
could not be parsed, or one whose checksums do not match the data.
Bad blocks are noted, but not discarded.
4.5 Disk files
This link allows you to browse through any files currently on the
DCM's primary hard disk.
The name of each file is shown, together with its size. If there are
directories on the disk, they are shown at the end of the list. The
amount of free space on the disk is also displayed.
Click on a link to download a file or enter a directory.
If no suitable storage medium can be found, the module will report the
error Failed to open USB disk.
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