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'''Cam switches''' are used in many Tek instruments, particularly in [[7000-series plug-ins]], but also in [[TM500]] equipment and 400-series portable scopes. | '''Cam switches''' are used in many Tek instruments from the late 1960s to the early 1990s, particularly in [[7000-series plug-ins]], but also in [[TM500]] equipment and 400-series portable scopes. | ||
The lobes on the rotary cam encode the lookup table of which contacts should be open or closed in each rotational position of the shaft, | The lobes on the rotary cam encode the lookup table of which contacts should be open or closed in each rotational position of the shaft, |