Guralp Systems CMG-3ESPCD - Manual (Page 65)

CMG-3ESPCD Digital Broadband Seismometer Command line interface
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tap 4 will output all four components ( 1 + 2 + 4 + 8 = 15).
To set triggered output streams, you should use the TRIGGERED command
detailed below.
6.4 Triggering
This section describes the commands which affect triggering.
6.4.1 TRIGGERS
Syntax: components TRIGGERS
Selects which component or components can generate a trigger. Only these
components will be examined by the triggering algorithm.
The argument components is an integer below 16, whose binary bits
represent the Z (1), N (2), E (4) and auxiliary (8) components respectively as
described above. Issuing 0 TRIGGERS will disable the triggering system.
6.4.2 TRIGGERED
Syntax: tap components TRIGGERED
Selects which component or components will be output when a trigger is
generated, and at which tap (sample rate).
The argument tap is the tap number at which to output the triggered stream.
You can set which taps output which sample rate using the SAMPLES/SEC
command, described above.
The argument components is an integer below 16, which represents which
components to output in the same fashion as in the CONTINUOUS command,
above.
(This command and the previous one have similar names; remember that a
component TRIGGERS the system, whilst taps and components are
TRIGGERED.)
6.4.3 STA
Syntax: Z­secs N­secs E­secs X­secs STA
Sets the length of the “short-term” averaging period in the STA/LTA triggering
algorithm.
The arguments Z­secs, N­secs, E­secs and X­secs are the time period
over which to calculate the average for the Z, N, E, and auxiliary components
respectively. If a component is not considered by the triggering algorithm (see
TRIGGERS, above), the value you specify here will be ignored. For example,
1 1 2 2 STA
MAN-C3E-0002 65 Issue B - November 2013