Guralp Systems CMG-DCM build <10,000 - Manual (Page 147)

Acquisition Modules and Platinum Firmware Recording and Retrieving Data
%l 2 char SEED location identifier ‡
%b block length
%f bits/sample or compression format
%p samples/second
%% % (a literal percent sign)
If the format string ends in a .extension (without any escape sequences in
the extension) then this extension will be noted and used in some other
locations – e.g. for the top level date directory.
The default format strings are:
•
GCF Directory format: %Y%j­gcfraw
•
GCF File format: %Y%jT%H%MZ.gcf
•
miniSEED Directory format: %Y%j­mseed
•
miniSEED File format: %Y%j­%H%M­%s­%c­%n­%l.mseed
Slashes “/” will cause subdirectories to be created. Using them as date
separators will have unintended and, usually, undesirable consequences.
11.2.2.1 Some examples
The GCF default, %Y%jT%H%MZ.gcf, includes the data and time but no stream
identifiers, resulting in a single file containing all streams per recording
period. This will produce file-names like:
2008315T1445Z.gcf
If you are recording at two different sample rates, including a %p will cause all
streams at the same rate to be grouped into one file per rate per recording
period. Using %Y%jT%H%MZ_%p.gcf might produce files like:
2008315T1445Z_200.gcf and
2008315T1445Z_50.gcf
If you need one file per stream, include the %C sequence. Using the format %Y
%jT%H%MZ_%C.gcf would produce files like:
2008315T1445Z_406N2.gcf
2008315T1445Z_406E2.gcf and
2008315T1445Z_406Z2.gcf
Adding a %S would add the system ID, so %Y%jT%H%MZ_%S_%C.gcf would
produce files like:
2008315T1445Z_EKA_406N2.gcf
MAN-EAM-0003 147 Issue E - February 2014