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PEM (Center)
takaaki.yokozawa - 5:15 Wednesday 02 September 2020 (14957) Print this report
Start the investigation BLRMS used in seismometer

Time delay and decay time.

100mHz - 300mHz BLRMS : time delay~20s

1Hz - 3Hz BLRMS : time delay~10s

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yuta.fujikawa - 11:52 Wednesday 02 September 2020 (14960) Print this report
I compared the offline analysis (bandpass and RMS) to BLRMS channels of seismometer.
analyzed channel:seismometer of IXV(K1:PEM-SEIS_IXV_GND_Z_OUT_DQ)
BLRMS channels:K1:PEM-SEIS_IXV_Z_BLRMS_{30MHZ100, ... , 10HZ30}

The lower the frequency band, the longer the time delay and stranger the shape.
Other seismometers(EXV,EYV) have a similar tendency.
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takaaki.yokozawa - 9:08 Thursday 03 September 2020 (14969) Print this report

I evaluated the transfer function of the filters.

The txt file was placed in

/users/yokozawa/TF_BLRMS/

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