Guralp Systems Scream - Manual (Page 129)

User guide
mode carry on recording, and do not send these messages. (This does
not work with DCMs, EAMs and NAMs: only SAMs.)
Scream Start / Stop : Generated by Scream! when it starts, and when it
shuts down cleanly. If a computer suffers a sudden loss of power or is
not shut down properly, Scream will not be able to respond in time so
you will not see a Scream Stop message.
Scream recording stopped : Whenever recording fails for a particular
stream, because of a write error on the local disk. Check that the disk
is not full, and that you have write access to the relevant directories. If
you have Auto Record – Enable active and have set recording to GCF
format, replaying a previously-recorded GCF file will cause Scream! to
attempt to record to the same file, causing this error. The file will be
undamaged.
GPS Control Timeout : Generated if Scream! has previously received
satisfactory GPS synchronization messages, but has not received any
within the last 12 hours. Scream! will not send another GPS Control
Timeout message until GPS operation resumes, at which point it will
restart the 12-hour timer.
Digitiser Trigger Report : Whenever the digitiser triggers. Scream!
determines this from lines in status messages, and not from the data
streams. Accordingly, there may be a slight delay between a trigger
and this message. The contents of the status lines are repeated in the
message.
Mass Positions : Generated if an instrument reports a mass position
above the value you specify, expressed as a percentage of the
maximum possible value. Most Güralp instruments can operate
satisfactorily with mass positions up to 50% of their travel; some can
operate with significantly higher mass positions.
Disk Full Warning : Generated if the amount of data on the hard disk
exceeds a specified percentage of the size of the disk.
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