Guralp Systems CMG-3T - Manual (Page 6)

CMG-3T
Sensor response
The 3T can be supplied with a response which is flat to velocity from
100 Hz to any of 0.1 Hz (10 seconds), 0.033 Hz (30 seconds), 0.016 Hz
(60 seconds), 0.01 Hz (100 seconds), 0.0083 Hz (120 seconds) or 0.0027
Hz (360 seconds). Alternatively, a hybrid response function may be
provided. See Chapter 5 for more details.
If you do not require high-frequency data, a low-pass filter may be
installed at any frequency (below 100 Hz) that you specify.
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