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Cam switches: Difference between revisions
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Cam switches are used in many Tek instruments, particularly in [[7000-series plug-ins]], but also in 400-series portable scopes. | Cam switches are used in many Tek instruments, 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, | ||
which is typically rotated by a knob on the front panel of the instrument. | which is typically rotated by a knob on the front panel of the instrument. | ||
A benefit of this design is low parasitics compared to traditional rotary wafer switches. | A benefit of this design is low parasitics compared to traditional rotary wafer switches. | ||
For cleaning, Tek recommends swiping paper soaked in isopropyl alcohol between the contacts and pads. | |||
==Maintenance== | ==Maintenance== | ||
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[[Category:Repair issues]] | [[Category:Repair issues]] | ||
[[Category:Electromechanical components]] | |||