TE Technology TC-24-12 - Manual (Page 11)

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A. Suppose that the Proportional Bandwidth Potentiometer (R14) was set to 0.6 volts to
just sustain a temperature oscillation. (Reference sections 12.5 and 12.6).
B. It was then observed that the natural period of this oscillation was 2 minutes.
(Reference section 12.7)
C. The Proportional Bandwidth Potentiometer (R14) should be adjusted so the voltage at
TP4 is equal to 1.2 volts. (Reference section 12.8 and the “Proportional Bandwidth as
a Function of Voltage” graph.)
D. The Integral Rate Potentiometer (R16) should be set to the inverse of the natural
period. This is 1/(2 min) = 0.5 repeats per minute. The potentiometer should be
adjusted until TP5 is at 0.98 volts. (Reference section 12.9 and the “Integral Rate as a
Function of Voltage” graph.)