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{{Oscilloscope Sidebar |manufacturer=Tektronix |designers=Frank Hood;Logan Belleville |
{{Oscilloscope Sidebar
series= |
|manufacturer=Tektronix
model= 511|
|series=
summary=10 MHz Tube scope<br />''First Tektronix oscilloscope''|
|model=511
image=Tek 511 1.jpg|
|summary=10 MHz Tube scope<br />''First Tektronix oscilloscope''
caption=Tektronix 511 front |
|image=Tek 511 1.jpg
introduced=1947 |
|caption=Tektronix 511 front
discontinued=1953 |
|introduced=1947
manuals=
|discontinued=1953
* [http://w140.com/tek_511.pdf Tektronix 511 Manual (PDF)]
|designers=Frank Hood;Logan Belleville
* [http://bama.edebris.com/download/tek/511aearly/Tek%20511A%20Pre%20SN2869.pdf Tektronix 511A Manual pre SN 2869 (PDF)]
|manuals=
* [http://bama.edebris.com/download/tek/511alater/Tek%20511A%20SN%202869-5099.pdf Tektronix 511A Manual SN 2869-5099 (PDF)]
* [https://w140.com/tek_511.pdf Tektronix 511 Manual] (PDF)
* [http://richardsears.wordpress.com/2012/01/07/near-the-beginning-of-an-era-the-tektronix-511a/ Richard Sears' 511A Page]
* [http://bama.edebris.com/download/tek/511aearly/Tek%20511A%20Pre%20SN2869.pdf Tektronix 511A Manual pre SN 2869] (PDF)
* [http://w140.com/1947+Tektronix_Catalog.pdf Tektronix 1947 Catalog with 511 (PDF)]
* [[Media:IM-511A-2.pdf|Tektronix 511A Manual SN 2869-5099]] (PDF, OCR)
* [https://richardsears.wordpress.com/2012/01/07/near-the-beginning-of-an-era-the-tektronix-511a/ Richard Sears' 511A Page]
* [https://w140.com/1947+Tektronix_Catalog.pdf Tektronix 1947 Catalog with 511] (PDF)


* [[Media:tek_511_manual.pdf|Tektronix 511 Manual (PDF, OCR, bad-OCR)]]
* [[Media:tek_511_manual.pdf|Tektronix 511 Manual]] (PDF, OCR, bad-OCR)
}}
}}
The 511 was '''Tek's second product''', [[introduced in 1947|introduced in June 1947]]. (The first was the [[101|Type 101 Video Calibrator]].)  
The 511 was '''Tek's second product''', [[introduced in 1947|introduced in June 1947]]. (The first was the [[101|Type 101 Video Calibrator]].)  
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==Specifications==
==Specifications==
The 511A does not have response down to DC.
The 511A does not have response down to DC − frequency range is specified as 10 Hz to 10 MHz.  
The frequency range is specified as 10 Hz to 10 MHz.  
There is also a 511AD, where the "D" in the model number indicates that it has a L-C [[delay line]].
There is also a 511AD.
The "D" in the model number indicates that it has a L-C [[delay line]].
The 511 weighs 65 pounds (29 kg) and consumes 180 W.   
The 511 weighs 65 pounds (29 kg) and consumes 180 W.   
The 511A weighs 50 pounds (23 kg) and consumes 230 W.
The 511A weighs 50 pounds (23 kg) and consumes 230 W.
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==Internals==
==Internals==
The 511 uses a standard CRT, the [[5CP1A]].  
The 511 uses a standard CRT, the [[5CP1A]] ([[phosphor|P1]]), [[5CP7A]] ([[phosphor|P7]]) or [[5CP11A]] ([[phosphor|P11]]).
The vertical output of the 511A is a pair of [[6AG7]] tubes,  
The vertical output of the 511A is a pair of [[6AG7]] tubes,  
AC-coupled to the vertical deflection plates.   
AC-coupled to the vertical deflection plates.   
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