9 transmission modes – Guralp Systems CMG-CD24 User Manual
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Operator's Guide
that were recorded during this period. To retrieve these streams, you
will have to specify the time period explicitly with FROM-TIME (and
TO-TIME if necessary), or download all stored data with ALL-FLASH.
This command should not be confused with the SAMPLES/SEC
command.
5.8.11 RESET-FLASH
Syntax: RESET-FLASH
Resets the Flash memory pointers so that both point to the start of
physical memory. The CD24 will start overwriting old data from the
beginning of memory. You can still access these data, if they have not
been overwritten.
5.8.12 ERASEFILE
Syntax: ERASEFILE (interactive)
Clears the entire Flash memory. When you issue this command, the
CD24 will ask you for confirmation. Enter y to confirm.
You will not be able to access any data previously held in Flash
memory after issuing this command.
5.9 Transmission modes
The CD24 operates in one of several transmission modes. These modes
relate to how the unit uses its Flash memory. For more details, see
5.9.1 DIRECT
Syntax: DIRECT
Instructs the CD24 not to use Flash memory for storage. Instead, all
data are transmitted directly to clients.
5.9.2 FILING
Syntax: FILING
Instructs the CD24 not to transmit blocks to clients automatically, but
to store all digitised data in the Flash memory. The memory is used in
circular fashion, i.e. if it becomes full, incoming blocks begin
overwriting the oldest in memory.
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