Both units of Figure 1 are highly sensitive and directional with respect to the vibrational axes producing the greatest responses: P1 responds best in the front-back axis with a displacement threshold
of 3 dB re: 1 nm; and B5 is most responsive to vertical motion with a displacement threshold
of --10 dB re: 1 nm.
For each axis of motion, the displacement threshold
was plotted in polar coordinates.
Both devices offer pushbutton functionality with user-defined magnet-to-device displacement thresholds
, maximum displacement, etc.