P80

The Tektronix 80P is the probe for the Type 80 plug-in for the 581 and 585 oscilloscopes. It is a cathode-follower probe, and contains a 6688 pentode. The tube functions as a phase splitter, not a simple cathode-follower.

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  Vents for tube

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  Connector, plugs into Type 80

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  Schematic