Guralp Systems CMG-3TB - Manual (Page 61)

Operator's guide
Most data can be found on the calibration sheet for your sensor.
Under
Instrument response, you should fill in the sensor
response code for your sensor, according to the table below.
Instrument Type should be set to the model number of the
sensor.
If the file calvals.txt exists in the same directory as
Scream!'s executable (scream.exe), Scream! will look there for
suitable calibration values. See the Scream! documentation for
more information.
9. Click OK. The script will return with a graph showing the
responsivity of the sensor in terms of amplitude and phase plots
for each component (if appropriate.)
The accuracy of the results depends on the amount of data you
have selected, and its sample rate. To obtain good-quality results
at low frequency, it will save computation time to use data
collected at a lower sample rate; although the same information
is present in higher-rate streams, they also include a large
amount of high-frequency data which may not be relevant to
your purposes.
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