Second order transfer element

Second order transfer element .
This module mustallow the analysis of the behavior of an element with proportional transfer function able to oscillate, with a delay of the second order, both in the time domain and in the frequency domain. Technical features:
•Power supply: +15 V ; 0 V ; -15 V
•Signal voltage range: -10V, ..., +10V
•Gain factor = 1
•Time constant T = 10 ms .... 30 s, selectable through two rotary switches
•Damping coefficient d = 0 .... 3, with potentiometer setting
It must be mounted on an insulated didactic module, it must show a schematic diagram and 2 mm terminals for the electrical connection;   two selectors, one potentiometer, one resetinput for the restoration of the initial conditions, one led indicator of over-range.It must include also a bus for the supply that allows the connection between the panels.