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{{Oscilloscope Sidebar |
{{Oscilloscope Sidebar
title=Tektronix 514|
|manufacturer=Tektronix
summary=10 MHz Tube scope |
|series=
image=Tek 514d front.jpg |
|model=514
caption=Tektronix 514 front |
|summary=10 MHz scope
years=1949 - ? |
|image=Tek 514d front.jpg
manuals=
|caption=Tektronix 514 front
|introduced=1949
|discontinued=1956
|designers=Dick Rhiger
|manuals=
* [http://bama.edebris.com/download/tek/514d/Tek%20514D%20Series%20A%20Manual.pdf Tektronix 514D Manual (PDF)]
* [http://bama.edebris.com/download/tek/514d/Tek%20514D%20Series%20A%20Manual.pdf Tektronix 514D Manual (PDF)]
* [[Media:Tek 514 history parts list.pdf|Tektronix 514 History Parts List (PDF)]]
}}
}}
The Tektronix 514 is a monolithic general-purpose oscilloscope introduced in 1949 or 1950.
The '''Tektronix 514''' is a monolithic general-purpose oscilloscope introduced in 1949 or 1950.


It was designed by Tektronix engineers Bob Davis and Dick Rhiger.
It was designed by Tektronix engineers [[Bob Davis]] and [[Dick Rhiger]].


Using a three-section distributed [[distributed amplifier]], it provides frequency response from DC to 10MHz.  
Using a three-section [[distributed amplifier]], it provides frequency response from DC to 10 MHz.
Prior to the 514, customers had to choose between an instrument with 10 MHz bandwidth (the [[511]]) ''or'' an instrument with DC response (the [[512]]).
Prior to the 514, customers had to choose between an instrument with 10 MHz bandwidth (the [[511]])  
''or'' an instrument with DC response (the [[512]]). The 514 provides DC response ''and'' 10 MHz bandwidth. 


The 514 provides DC response ''and'' 10 MHz bandwidth.  It weighs 60 pounds (27 kg) and consumes 360 W. The 514 uses a [[5CPA]] CRT with a total accelerating voltage of 3000 V. The deflection sensitivity of the CRT is approximately
The 514 uses a [[5CPA]] CRT with a total accelerating voltage of 3 kV (−1.5 kV on the CRT cathode and +1.5 kV on the CRT anode).
27 V/cm vertical and 32 V/cm horizontal.
The standard [[phosphor]] for a 514 was P1.
The deflection sensitivity of the CRT is approximately 27 V/cm vertical and 32 V/cm horizontal.


The power supply is regulated based on a -140 V reference produced by a [[OD3]] gas regulator tube.
The power supply is regulated based on a −140 V reference produced by an [[OD3]] gas regulator tube.
The +225 V supply uses three [[5V4G]] rectifier tubes in parallel.


A 514D model exists, which has a 24-section 250 ns lumped L-C [[delay line]].   
Throughout its production run, a 'D' variant was available (514D, with the 'D' being stamped in by hand
There is also a 514AD. ''(How does the 514AD differ from the 514D?)''
on some models), which has a 24-section 250 ns lumped L-C [[delay line]].   
There was also an 'A' version (514-A & 514-AD respectively), which appears to have been available in 1954.  
''(There were also some models marked 'Series A', which may have been a predecessor to the 514A? How does the 514AD differ from the 514D?)''


It has no [[thermal cutoff]].
It has no [[thermal cutoff]].


==Specifications==
{{BeginSpecs}}
[[Category:Specifications needed]]
{{Spec | Frequency response | DC to 10 MHz }}
{{Spec | Input impedance |1 MΩ // 30 pF }}
{{Spec | Vertical deflection | 100 V/cm down to 300 mV/cm (DC) / 30 mV/cm (AC), 1 - 3 - 10 sequence}}
{{Spec | Weight | 28.1 kg (62 pounds) }}
{{Spec | Power consumption | 375 W }}
{{EndSpecs}}
 
==Links==
* [http://paulcarbone.com/blog/?p=909 Paul's research on models, variants, and years available]
* [[Media:Tektronix Photo Manual 1952.pdf| Tektronix Photo Manual 1952]]


==Pictures==
==Pictures==


<gallery>
<gallery>
File:Tek 514d front.jpg|Front
Tek 514d front.jpg         | Front
File:Tek 514d dist amp.jpg|Distributed vertical amp
Tek 514 with bk curve tracer.jpg|514AD with B&K Curve Tracer
File:Tek 514d delay trimmers.jpg|Delay line trimmer caps  
Tek 514d dist amp.jpg       | Distributed vertical amp
File:Tek 514d bottom.jpg|Bottom view
Tek 514d delay trimmers.jpg | Delay line trimmer caps  
Image:Tek 514d-vert schem2.png|Vertical amp schematic
Tek 514d bottom.jpg         | Bottom view
Tek514-PowerSupply.jpg      | Power Supply
Tek514-upperDeckRear.jpg    | Upper Deck, rear
Tek514-upperDeckFront.jpg  | Upper Deck, front
Tek514-lowerDeckFront.jpg  | Lower Deck, front
Tek514-lowerDeckRear.jpg    | Lower Deck, rear
Tek514-fanMotor.jpg        | Fan Motor
Tek514-lineSocket.jpg      | Line Socket
Tek 514d-vert schem2.png   | Vertical amp schematic
Tek_514_Vertical_preamp_early.jpg | Vertical preamp, early
Tek_514_HV_PS_early.jpg    | HV Power Supply, early
Tek 514ad 5535 1.jpg|514AD
Tek 514ad 5535 2.jpg|514AD
Tek 514ad 5535 3.jpg|514AD
Tek 514ad 5535 4.jpg|514AD
Tek 514ad 5535 5.jpg|514AD
Tek 514ad 5535 6.jpg|514AD
Tek 514ad 5535 7.jpg|514AD
Tek 514ad 5535 8.jpg|514AD
Tek 514ad 5535 9.jpg|514AD
Tek 514ad 5535 10.jpg|514AD
</gallery>
</gallery>


[[Category:500 series scopes]]
{{Parts|514}}
 
[[Category:Monolithic tube scopes]]
Retrieved from "https://w140.com/tekwiki/wiki/Special:MobileDiff/9606...69994"

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