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3T77: Difference between revisions
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It was [[introduced in 1962]], along with the [[567]] and [[3S76]]. | It was [[introduced in 1962]], along with the [[567]] and [[3S76]]. | ||
[[Bob Webb]] and maybe [[Jim Geddes]] and possibly [[Cliff Moulton]] designed the Type [[77]] | [[Bob Webb]] and maybe [[Jim Geddes]] and possibly [[Cliff Moulton]] designed the a plug-in called "Type 77" (not to be confused with the identically named but totally different non-sampling sweep plug-in also called [[77|Type 77]]). The "Type 77" sampling sweep evolved into the 3T77. | ||
The '''Tektronix 3T77A''' made its first appearance in the 1966 catalog. | |||
Both versions trigger on either the internal trigger pick-off from the vertical plug-in or from an external trigger signal input. | |||
Triggering is faster and more sensitive with an external input. | Triggering is faster and more sensitive with an external input. | ||
The 3T77 can operate in any of four modes: external sweep, manual sweep, normal, or single sweep. | The 3T77/3T77A can operate in any of four modes: external sweep, manual sweep, normal, or single sweep. | ||
In external sweep mode, an external control voltage is applied to a BNC connector on the front panel of the 3T77. | In external sweep mode, an external control voltage is applied to a BNC connector on the front panel of the 3T77. | ||
This voltage determines the X-position of the spot on the CRT and, correspondingly, the delay from the trigger event to the sampling point. | This voltage determines the X-position of the spot on the CRT and, correspondingly, the delay from the trigger event to the sampling point. | ||
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{{MissingSpecs}} | {{MissingSpecs}} | ||
==Links== | |||
{{Documents|Link=3T77}} | |||
{{PatentLinks|3T77}} | |||
==Internals== | ==Internals== | ||
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{{Parts|3T77A}} | {{Parts|3T77A}} | ||
[[Category:560 series plugins]] | [[Category:560 series plugins]] | ||
[[Category:560 series sampling plugins]] | |||