Guralp Systems CMG-DCM build <10,000 - Manual (Page 84)

CMG-EAM (Platinum Firmware)
The tap to be used as input should be selected from the Trigger input
drop-down menu. All configured taps are available, regardless of
whether they have been selected for continuous output or not. An
optional highpass filter can be applied to eliminate the effect of any
DC offset in the sensor's output. The available corner frequencies are
100, 300 and 1000 seconds.
The check-boxes labelled with component designators are used to
include or exclude the associated component from the triggering
algorithm. If one is ticked, a trigger will be activated if that
component's instantaneous output exceeds the value entered into the
Triggering level field in the same row.
The final section of the triggering configuration screen concerns
external triggering and pre- and post-trigger times.
Full coverage of external triggering is beyond the scope of this manual
and the interested reader is referred to the relevant digitiser manual.
The pre-trigger time and post-trigger time drop-down menus control
the amount of data transmitted around each trigger period. The
options offered range from 5 seconds to 4 minutes. The “0 seconds”
setting disables the feature.
The “Add new trigger tap” button inserts and extra row in the
decimator output table and returns the display to the main digitiser
configuration settings screen.
The next section of the main display shows and controls the
transmission of data from the auxiliary and state-of-health channels of
the digitiser:
84 Issue C