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The Tektronix Type 5T3 is a timing plug-in for the Type [[661]] oscilloscope. | The Tektronix Type 5T3 is a timing plug-in for the Type [[661]] [[sampling oscilloscope]]. | ||
It uses TD253B [[tunnel diodes]] for triggering. | It uses TD253B [[tunnel diodes]] for triggering. | ||
It has a high-impedance external trigger input that is buffered by an [[8056]] [[nuvistor|Nuvistor]] cathode follower. | It has a high-impedance external trigger input that is buffered by an [[8056]] [[nuvistor|Nuvistor]] cathode follower. |