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The Tektronix 520 is an vectorscope [[introduced in 1967]]. Versions were made for  
{{Instrument Sidebar
NTSC and for PAL.
|manufacturer=Tektronix
|model=520
|class=Audio/Video
|series=
|summary=NTSC/PAL vectorscope
|image=520A_wTrace.jpg
|caption=520A vectorscope
|introduced=1967
|discontinued=(?)
|designers=Phil Crosby;Ron Olson
|manuals=
* [[Media:070-0639-02.pdf|Tektronix 520 Manual]]
* [[Media:070-1709-00.pdf|Tektronix 520A Manual]]
* [[Media:Tek 520 pal fcp sept 1968.pdf | Tektronix 520 PAL Factory Calibration Procedure, September 1968]]
* [[Media:Tek_520_catalog_page.pdf|Tektronix 520 Entry in 1968 Catalog]]
}}
The '''Tektronix 520''' is a vectorscope [[introduced in 1967]]. Versions were made for NTSC and for PAL.


* [http://w140.com/tek_520.pdf Tektronix 520 Manual (PDF)]
[[Phil Crosby]] was the project lead and designed the demodulation circuitry. [[Ron Olson]] designed the sweep.
* [http://w140.com/tek_520a.pdf Tektronix 520A Manual (PDF)]


* [http://w140.com/tek_520_cat.pdf Tektronix 520 Entry in 1968 Catalog (PDF)]
The HV oscillator's power transistor is mounted to the rear panel.
Since its collector has 40 kHz with tens of volts peak-to-peak a decision was made to add metal plating to the transistor's Bakelite cover to prevent EMI.
Unexpectedly, the outgassing from the Bakelite caused the metal plating to blister, which shorted the collector to the case.
When this problem was discovered, the metal plating was removed from the design. In hindsight, the designers didn't believe the plating was necessary in the first place.


{{MissingSpecs}}
==Links==
{{Documents|Link=520}}
{{Documents|Link=520A}}
{{PatentLinks|520}}
{{PatentLinks|520A}}
==Pictures==
====520====
<gallery>
Tek 520 cat.jpg | 520 catalog image
Tek type r520.jpg
Tek 520 pal.jpg|520 PAL version
</gallery>
====520A====
<gallery>
<gallery>
Image:Tek 520 cat.jpg
520A_wTrace.jpg
Image:Tek type r520.jpg
520A_Front.jpg
Image:R520a front.jpg
R520a front.jpg
Image:R520a rear.jpg
520A_Rear.jpg
R520a rear.jpg
Tek 520a 1.jpg
Tek 520a 2.jpg
Tek 520a 3.jpg
Tek 520a 4.jpg
Tek 520a 5.jpg
Tek 520a 6.jpg
Tek 520a 7.jpg
Tek 520a 8.jpg
Tek 520a 9.jpg
Tek 520a 10.jpg
Tek 520a 11.jpg
</gallery>
</gallery>
{{Parts|520}}
[[Category:TV vectorscopes]]

Latest revision as of 13:33, 12 July 2024

Tektronix 520
NTSC/PAL vectorscope
520A vectorscope

Produced from 1967 to (?)

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 520 is a vectorscope introduced in 1967. Versions were made for NTSC and for PAL.

Phil Crosby was the project lead and designed the demodulation circuitry. Ron Olson designed the sweep.

The HV oscillator's power transistor is mounted to the rear panel. Since its collector has 40 kHz with tens of volts peak-to-peak a decision was made to add metal plating to the transistor's Bakelite cover to prevent EMI. Unexpectedly, the outgassing from the Bakelite caused the metal plating to blister, which shorted the collector to the case. When this problem was discovered, the metal plating was removed from the design. In hindsight, the designers didn't believe the plating was necessary in the first place.

Key Specifications

  • please add

Links

Documents Referencing 520

Document Class Title Authors Year Links
Service Scope 47 Dec 1967.pdf Article A New Vectorscope 1967
Tekscope 1971 V3 N6 Nov 1971.pdf Article A Quick-Cal Procedure for the 520 Vectorscope Ed Handris 1971
Tekscope 1971 V3 N6 Nov 1971.pdf Article Tektronix and the World of Television Measurements Stephen D. Kerman 1971
TekWeek (partial) October 10, 1975.pdf Article Questions for guest speakers Tom Long Steve Kerman Dave Friedley Thor Hallen Charlie Rhodes 1975

Documents Referencing 520A

(no results)

Patents that may apply to 520A

Page Title Inventors Filing date Grant date Links
Patent US 3453403A Power selection device Eldon Hoffman 1966-08-18 1969-07-01

Pictures

520

520A


Some Parts Used in the 520

Part Part Number(s) Class Description Used in
T5201 154-0513-00 154-0513-01 154-0513-02 154-0513-03 CRT CRT with special graticule 520 521 522