Guralp Systems CMG-EDU - Manual (Page 27)

Operator's guide
Byte order is not applicable to the ASCII-like GSE or UFA formats.
Granularity: Allows you to decide how large files are allowed to
become before a new one is started, for three different types of stream
(high sample rates, low sample rates and status streams.) The
distinction between high and low sample rates is set by the number in
the Sample Rates >= box; the remaining boxes give the number of
hours of data that Scream! should combine into a single file for each
type of stream. In the example above, streams with a sample rate of 20
samples/sec or above will be recorded in files with up to 1 hour's data
per file; lower-rate streams will be recorded in 4-hour files, whilst a
new status file will be started every 12 hours. You will need to choose
a Filename format (see above) which gives each file a unique name.
If you prefer to set a limit on a file's size, rather than its duration,
choose Kilobytes from the drop-down menu (instead of Hours or
Minutes) and set as appropriate.
Post-processor: This option allows you to specify a program which
Scream! will run every time it closes a file. The name of the file is
passed as a parameter. You can use this feature to interface to other
analysis or archival systems, for example:
•
FTP or emailing files to remote data centres,
•
format conversion using a third party utility,
•
post-processing of file data headers to add site-specific
information.
4.3 Playback
4.3.1 GCF files
To replay a stored GCF file or files:
1. Select File Replay Files... → from Scream!'s main menu and
select the data you want to replay, or drag GCF files from a
Windows Explorer window into Scream!'s main window.
Using Microsoft Windows, you cannot select files from more
than one window at the same time. However, you can use the
Search tool to select files from more than one directory. Open a
window on the topmost data directory and click Search, or
press F3:
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