Guralp Systems CMG-DCM build <10,000 - Manual (Page 105)

Acquisition Modules and Platinum Firmware Digitiser Configuration
Stream ID Data content
SCO Windowed minimum for component
S2O Windowed minimum for horizontal resultant
S3O Windowed minimum for 3-dimensional resultant
SCP Windowed PGA for component
S2P Windowed PGA for horizontal resultant
S3P Windowed PGA for 3-dimensional resultant
SCQ Windowed maximum for component
S2Q Windowed maximum for horizontal resultant
S3Q Windowed maximum for 3-dimensional resultant
SCR Windowed RMS for component
S2R Windowed RMS for horizontal resultant
S3R Windowed RMS for 3-dimensional resultant
SCS Windowed SI for component
S2S Windowed SI for horizontal resultant
S3S Windowed SI for 3-dimensional resultant
SCT Windowed average for component
S2T Windowed average for horizontal resultant
S3T Windowed average for 3-dimensional resultant
8.1.1.5 Causal filtering
The normal decimation chain on a CMG-DM24 uses acausal finite impulse
response (FIR) filters. Acausal FIR filters have significantly higher latency
than causal FIR filters. The last filter in a decimation chain has the biggest
effect on the overall latency of the chain. The CMG-DM24 offers a single
causal FIR filter which can be connected at any point in the decimation chain
to provide a lower-latency output.
To enable the causal FIR filter, ensure that the CMG-DM24 is in normal
operation mode (not strong motion mode) and then click
.
Scroll to the bottom of the page and click .
MAN-EAM-0003 105 Issue E - February 2014