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{{Plugin Sidebar | |||
|manufacturer=Tektronix | |||
|type=067-0657-00 | |||
|summary=7000 Series Normalized Ramp Generator | |||
|image=067-0657-00 front.jpg | |||
|caption=067-0657-00 Front | |||
|introduced=1976 | |||
|discontinued= | |||
|series=7000-series scopes | |||
|designers=Bruce Hofer | |||
|manuals= | |||
* [[Media:Tek 067-0657-00 with schematics.pdf|Tektronix 067-0657-00 Manual]] (OCR) | |||
}} | |||
The '''Tektronix 067-0657-00 Normalized Ramp Generator''' is a calibration plug-in for [[7000-series scopes]]. | The '''Tektronix 067-0657-00 Normalized Ramp Generator''' is a calibration plug-in for [[7000-series scopes]]. | ||
It provides calibrated sweep rates from 0.5 ns/Div to 50 ns/Div (in a 1–2–5 sequence) plus 1 μs/Div and 1 ms/Div. | |||
The calibration fixture is triggered from an external signal (such as a trigger output from a time-mark generator) applied to the front-panel TRIG IN connector. | |||
==Internals== | |||
The 067-0657-00 was the result of some fundamental research by [[Bruce Hofer]] inspired by production issues in the calibration of early [[7904]] scopes. This lead to a new sweep circuit that uses current steering in a differential pair to start the charging of the timing capacitor as is discussed in [[Patent_US_4009399A|patent 4009399]]. The sweep circuit in the 067-0657-00 follows the patent application but does not implement the baseline stability circuit, which was incorporated in the [[7B92A]]. | |||
==Links== | |||
* [[Bruce Hofer]], ''[https://vintagetek.org/years-at-tektronix-hofer/ My Years at Tektronix] | |||
* [https://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_special/067-0657-00%20067-0657-99/067-0657-99_067-0657-00.html 067-0657-xx @ amplifier.cd] | |||
* [[Patent_US_4009399A| US Patent 4009399 Gated Ramp Generator]] | |||
==Pictures== | |||
<gallery> | <gallery> | ||
067-0657-00 front.jpg | |||
067-0657-00 inside.jpg | |||
Tek 067-0657-00 e0.jpg | |||
Tek 067-0657-00 e1.jpg | |||
Tek 067-0657-00 e2.jpg | |||
Tek 067-0657-00 1.jpg | |||
Tek 067-0657-00 2.jpg | |||
Tek 067-0657-00 3.jpg | |||
Tek 067-0657-00 4.jpg | |||
Tek 067-0657-00 11.jpg | |||
Tek 067-0657-00 12.jpg | |||
Tek 067-0657-00 13.jpg | |||
</gallery> | </gallery> | ||
[[Category:7000 series | ==Components== | ||
{{Parts|067-0657-00}} | |||
[[Category:7000 series test and calibration plugins]] | |||