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manuals=
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.
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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. 
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).
It weighs 60 pounds (27 kg) and consumes 360 W.
The 514 uses a [[5CPA]] CRT with a total accelerating voltage of 3000 V
(-1.5 kV on the CRT cathode and +1.5 kV on the CRT anode) .
The standard [[phosphor]] for a 514 was P1.
The standard [[phosphor]] for a 514 was P1.
The deflection sensitivity of the CRT is approximately
The deflection sensitivity of the CRT is approximately 27 V/cm vertical and 32 V/cm horizontal.
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.
The +225 V supply uses three [[5V4G]] rectifier tubes in parallel.


Throughout its production run, a 'D' variant was available (514D, with the 'D' being stamped in by hand on some models) 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  
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 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?)''
''(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]].
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{{Spec | Input impedance |1 MΩ // 30 pF }}
{{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 | Vertical deflection | 100 V/cm down to 300 mV/cm (DC) / 30 mV/cm (AC), 1 - 3 - 10 sequence}}
{{Spec | Weight | 62 pounds (28.1 kg) }}
{{Spec | Weight | 28.1 kg (62 pounds) }}
{{Spec | Power consumption | 375 W }}
{{Spec | Power consumption | 375 W }}
{{EndSpecs}}
{{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  
File:Tek514-PowerSupply.jpg      | Power Supply
Tek 514d bottom.jpg        | Bottom view
File:Tek514-upperDeckRear.jpg    | Upper Deck, rear
Tek514-PowerSupply.jpg      | Power Supply
File:Tek514-upperDeckFront.jpg  | Upper Deck, front
Tek514-upperDeckRear.jpg    | Upper Deck, rear
File:Tek514-lowerDeckFront.jpg  | Lower Deck, front
Tek514-upperDeckFront.jpg  | Upper Deck, front
File:Tek514-lowerDeckRear.jpg    | Lower Deck, rear
Tek514-lowerDeckFront.jpg  | Lower Deck, front
File:Tek514-fanMotor.jpg        | Fan Motor
Tek514-lowerDeckRear.jpg    | Lower Deck, rear
File:Tek514-lineSocket.jpg      | Line Socket
Tek514-fanMotor.jpg        | Fan Motor
File:Tek 514d-vert schem2.png    | Vertical amp schematic
Tek514-lineSocket.jpg      | Line Socket
File:Tek_514_Vertical_preamp_early.jpg | Vertical preamp, early
Tek 514d-vert schem2.png    | Vertical amp schematic
File:Tek_514_HV_PS_early.jpg    | HV Power Supply, early
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:Monolithic tube scopes]]
[[Category:Monolithic tube scopes]]
Retrieved from "https://w140.com/tekwiki/wiki/Special:MobileDiff/20797...42934"

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