**//SCIENTIFIC-INSTRUMENTS-TEMPERATURE-CONTROLLER//** Package ''TCON'' contains 2 channel symbols ''A'', ''B'' and functions for temperature control. The temperature controller of IR ellipsometer is Scientific Instruments Model 9700 and works with 2 sensors, either of which can be selected as control sensor. The channel symbols A, B evaluate to integers 1 and 2, respectively. ''SETPOINT'' ''GET-T'' ''CHANNEL'' ''CHANGING?'' ''HEATER-OUTPUT'' ''HEATER'' ''HEATER-MAX'' ''BRACKET''