Guralp Systems Scream - Manual (Page 111)

User guide
9.2.5 GSE file format
Scream! supports recording in the GSE 2.0 format (cm6 sub-format)
using the same rules for file and directory names as for GCF files (see
above), but using the extension .cm6.
Files in GSE format must represent a contiguous period of time. If a
discontinuity is detected in the incoming data stream, then the file
which is currently recording will be closed, and a new file opened
with a file-name and time stamp matching the start of the new file.
This operation will take place regardless of the options you have
specified for Granularity, although the Granularity options will still
work.
You can set your own header fields by preparing an [ExportInfo]
section in the scream.ini file. See the MiniSEED section on page
107, for more details.
The specifications you can use are sta:, chan:, aux:, calib:,
calper:, hang:, and vang:
Each specification sets the header field with the same name. If you
miss out a specification, Scream! will fill in the default value.
9.2.6 CSS file format
Scream! supports recording in the CSS 3.0 flat file format, using the
same rules for file and directory names as for GCF files (see above), but
using the extension .w, together with a wfdisc table stored in the
Base directory.
.w files in CSS format must represent a contiguous period of time. If a
discontinuity is detected in the incoming data stream, then the file
which is currently recording will be closed, and a new file opened
with a file-name and time stamp matching the start of the new file.
This operation will take place regardless of the options you have
specified for Granularity, although the Granularity options will still
work.
Samples are stored in the .w files as signed 32-bit integers (s4 or i4),
using the Byte Order you have specified. Scream! updates the wfdisc
table whenever data are added to a .w file.
You can set your own header fields by preparing an [ExportInfo]
section in the scream.ini file. See the MiniSEED section on page
107, for more details.
January 2014 111