An ellipsometer measurement apparatus for determining the thickness of a film applied on a substrate, is described. The system includes a redundancy system, for example, a standby modem interface card and a plurality of standby outdoor units that are incorporated into the base station. The nisin-containing whey can be prepared by inoculating a pasteurized dairy composition with a culture of a nisin-producing microorganism, incubating the composition until the pH attains a value between about 6. The lifting device moves the pickup device between a standby position and a pickup position. When the IC is a programmable IC, for example, the compensated circuit can be a programmable interconnect multiplexer of the programmable IC.