Chapter 5
Configuring Your System
Trillium Compact User Guide
16889R5
2014-03-04
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5.3 Increasing System Sensitivity
If increased system sensitivity is required for either the Taurus or Trident, decrease the
digitizer input range and increase the sensitivity. Use
as a guide.
Note that the exact nominal system sensitivity will vary depending on the normalization
frequency (typically 1 Hz) and the lower corner period. The exact nominal sensor sensitivity
for a particular model of Trillium Compact can be taken from the appropriate table in
Section 9.1 “Frequency Response for 120 s and 20 s Models”
Increasing the sensitivity of a digitizer by decreasing the input range below the 40 Vpp output
range of the Trillium Compact
can cause the digitizer to clip during the strong events.
Table 5-2
Increasing system sensitivity
Digitizer Input
Range (Vpp)
Digitizer
Software Gain
Digitizer Sensitivity
(count /µV)
Sensor Sensitivity
(V/(m/s))
System Sensitivity
(Counts/(m/s))
40
1
0.4
750
0.3e9
16
1
1
750
0.75e9
8
1
2
750
1.5e9
4
1
4
750
3e9
2
1
8
750
6e9