Guralp Systems Scream - Manual (Page 105)

User guide
back-slash (\) character under Windows or the solidus (/) under
Linux.
For example:
T\YYYY_MM_DD;HHhNNmSSs will give file-names like
dmz2\1997_10_05;07h35m20s.
You should always ensure that files are given unique names. Scream!
writes each stream separately. If it finds that it cannot write to a file
because it is already open for another stream, the write will fail and
data will not be recorded.
Scream! can record data in many formats. Some file formats, such as
gcf and MiniSEED, divide their internal data into blocks, each of which
has a time-stamp. Such formats can store streams which includes
gaps. Most other formats are not block-structured and only have a
single time-stamped header at the start of the file. If Scream! is saving
data in a non-block-structured format and encounters a gap in the
stream, it starts a new file. If the file-name configuration does not
permit sufficient granularity, Scream! will silently over-write the
previous file, resulting in loss of data. You should pay particular
attention to the file-name settings when using these formats in order to
avoid this scenario.
Data Format : Selects the format of the recorded data files. Options
are GCF, SAC, MiniSEED, P-SEGy, PEPP, SUDs, GSE, UFF (ufa and
ufb; see below), and CSS. A single instance of Scream! can only
record in one format at a time; if you need output in multiple formats,
you can either
•
record in GCF and perform conversions later using
freely-available tools, or
•
record in one format and set up a Scream! server to relay
real-time data to another Scream! on the same computer (see
Chapter 5 on page 53).
Byte Order : For SAC, SEG-y, UFB and CSS files, the byte order of the
files can be specified. This can be used to match the byte order with
the native order of the platform where you are going to perform
analysis. GCF and MiniSEED are defined to be in “Motorola or
SPARC” byte order. PEPP and SUDs data are defined to be in “Intel”
byte order. Byte order is not applicable to the ASCII-like GSE or UFA
formats.
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