Guralp Systems CMG-6TD User Manual
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Configuration with Scream!
The spectral amplitudes for the various frequency responses available are
shown in the figures below.
5.1.3.2 Level triggering
Using the Level triggering method, a trigger is generated whenever one of the
selected components reaches a certain level above the baseline. You can
select which tap is monitored from the Data source drop-down menu, and the
channel(s) to be considered from the Channel column of the table. The values
in the Level column are the number of counts above the baseline that channel
must reach before a trigger is generated.
As with the STA/LTA method, the values of the Level will often be the same
for all selected channels. If you want to use different values for some
channels, you should clear the Common values check-box before altering
them.
Once you have enabled the Level triggering method on a particular channel,
you can use the Control window to change the level at which the system
triggers without restarting the digitiser.
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Issue F - February 2014