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* [http://w140.com/tek_517_517a_OCR.pdf Later Manual Covering the 517 and 517A (PDF, OCR)] | * [http://w140.com/tek_517_517a_OCR.pdf Later Manual Covering the 517 and 517A (PDF, OCR)] | ||
}} | }} | ||
The '''Tektronix 517''' is a 50 MHz scope [[introduced in 1950]] or [[introduced in 1951|1951]]. | The '''Tektronix 517''' is a 50 MHz scope [[introduced in 1950]] or [[introduced in 1951|1951]]. | ||
The power supply is an external box, like the [[507]], [[551]] and [[555]]. [[Category:Introduced in 1950]] | |||
The 517 does not take plug-ins. There is also a 517A (1955-1965). | The 517 does not take plug-ins. There is also a 517A (1955-1965). | ||
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Tektronix engineer [[Frank Hood]] recollects: | Tektronix engineer [[Frank Hood]] recollects: | ||
<blockquote> | <blockquote> | ||
"A lot of progress was made in 1949 and 1950. Work was well underway by [[Logan Belleville]], [[Dick Rhiger]] and [[Howard Vollum|Howard]] on the high speed scope, the 517. This used some brand new circuitry, [[distributed amplifier|distributed (or chain) amplifiers]], using 16 to 20 tubes in each stage to get the power needed to handle the high frequencies. Our best prediction at that time was that there were only about 30 to 50 people in the whole world who had need of a scope with 60 to 100 megacycle bandwidth. As it turned out, when we brought out a higher speed scope, people were able to design equipment of greater bandwidth and needed even faster measuring instruments. The cycle was regenerative. Having faster, more accurate measuring tools created a demand for even more measuring tools. We eventually sold several thousand of this instrument." | "A lot of progress was made in 1949 and 1950. | ||
Work was well underway by [[Logan Belleville]], [[Dick Rhiger]] and [[Howard Vollum|Howard]] | |||
on the high speed scope, the 517. | |||
This used some brand new circuitry, [[distributed amplifier|distributed (or chain) amplifiers]], | |||
using 16 to 20 tubes in each stage to get the power needed to handle the high frequencies. | |||
Our best prediction at that time was that there were only about 30 to 50 people in the whole world | |||
who had need of a scope with 60 to 100 megacycle bandwidth. | |||
As it turned out, when we brought out a higher speed scope, | |||
people were able to design equipment of greater bandwidth and needed even faster measuring instruments. | |||
The cycle was regenerative. | |||
Having faster, more accurate measuring tools created a demand for even more measuring tools. | |||
We eventually sold several thousand of this instrument." | |||
</blockquote> | </blockquote> | ||
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Units with serial numbers from 101 through 1739 use 12-pin Jones 2412 connectors; | Units with serial numbers from 101 through 1739 use 12-pin Jones 2412 connectors; | ||
after that it is a 16-pin Jones connector. | after that it is a 16-pin Jones connector. | ||
''(Was a 16-pin Jones connector used or did they go directory from the 12-pin Jones connector to the 16-pin Amphenol power connector used by the [[555]]?)'' | ''(Was a 16-pin Jones connector used or did they go directory from the 12-pin Jones connector | ||
to the 16-pin Amphenol power connector used by the [[555]]?)'' | |||
The voltages on the 12-pin connector are: | The voltages on the 12-pin connector are: | ||
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==Pictures of 517 == | ==Pictures of 517 == | ||
<gallery> | <gallery> | ||
517_cat_whole.jpg|front | |||
517_cat_int_left.jpg|bottom internal | |||
517_cat_int_right.jpg|right internal | |||
517_cat_int_top.jpg|top internal | |||
517_cat_ps_int.jpg|power supply internal | |||
517 power connector.jpg|12-pin Jones socket on power supply | |||
Jones 12pin male.jpg|12-pin Jones plug | |||
Jones 12m inside.jpg|12-pin Jones plug inside | |||
Tek 517 420 hv.jpg|High voltage supply | |||
Tek 517 front.jpg|Front view | |||
Tek 517 indicator jones.jpg|12-pin Jones connector on indicator unit | |||
Tek 517 left.jpg|Left internal view | |||
Tek 517 vert output.jpg|Distributed vertical output amplifier | |||
Tek 517 wood cap support.jpg|Wooden support for capacitor C826 | |||
Tek crt table.png|Tek CRT Reference Chart | |||
517 trig amp underside.jpg | |||
517 vert stages one through three.jpg | |||
517 4th vert stage.jpg | |||
517 right internals.jpg | |||
517 timing switch 2.jpg | |||
517 timing switch 1.jpg | |||
517 power test point.jpg | |||
517 hv osc.jpg | |||
Tek 517a vert pre.png | Vertical pre-amplifier circuit | |||
Tek 517a vert amp.png | Vertical amplifier circuit | |||
Tek 517a trigger amp.png | Trigger amplifier circuit | |||
Tek 517 late sweep.png | | |||
Tek 517a crt circuit.png | CRT circuit | |||
Tek 517a trigger rate gen.png | | |||
Tek 517 hvps2.png | High-voltage power supply circuit | |||
517 ps fan.jpg | |||
517 ps bottom left.jpg | |||
517 ps bottom right.jpg | |||
517 ps front left int.jpg | |||
517 ps right rear bottom.jpg | |||
517 ps bottom.jpg | |||
517 ps right int.jpg | |||
517 assembly2.jpg | |||
B170_A.JPG| 170 ohms Attenuator | |||
Tek 517 ad.jpg | |||
517a rear vert interface.jpg|Direct CRT access mod | |||
517a single sweep controls.jpg|Single-sweep mod | |||
Tek 517 735 on cart.jpg | Tek 517 735 on cart.jpg | ||
Tek 517 735 left.jpg | Tek 517 735 left.jpg | ||