Guralp Systems Scream - Manual (Page 71)

User guide
6.3.1 Timing
This column details the instrument's GPS timing status. The colours
are the same as those used for the top half of the instrument's icon in
the main window. Double-click on a column entry to see the status
messages coming from that instrument.
Grey : Scream! has not received any GPS information from the
instrument since the last reset.
Green : The instrument has reported a satisfactory GPS timing fix.
Yellow : The instrument has reported a gap in the timing stream. This
may occur if the GPS signal deteriorates to the point where the
receiver cannot keep a lock on the satellites.
Red : The instrument has not reported a satisfactory timing fix for over
an hour. This will happen if there have been gaps in the signal (as
above), but also if it has not reported anything. If you have set the GPS
system to power down for intervals longer than an hour, the icon will
turn red even if the system is working normally.
6.3.2 Mass position
This column details the instrument's mass position status.
Double-click on a column entry to open a Waveview window on the
instrument's mass position channels.
Note: some instruments must be switched to
one-second response mode for these channels to give
meaningful data.
Grey : Scream! has not received any mass positions information from
the instrument since the last reset.
Green : The instrument has reported satisfactory mass positions (all
components < 25% of full scale).
Yellow : One or more components are reporting mass positions
between 25% and 50% of full scale. Most instrument types will still
function normally, but the masses should be re-centred when it is next
convenient.
Red : One or more components are reporting mass positions over 50%
of full scale. Most instrument types will still function adequately, but
the masses should be re-centred as a matter of urgency.
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