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The Tektronix 514 is a monolithic general-purpose oscilloscope.
{{Oscilloscope Sidebar |manufacturer=Tektronix |designers=Dick Rhiger |
It was designed by Tektronix engineers Bob Davis and Dick Rhiger.
series= |
Using a [[distributed amplifier]] it provides frequency response  
model= 514|
from DC to 10MHz.  
summary=10 MHz Tube scope |
Prior to the 514, customers had to choose between an instrument with
image=Tek 514d front.jpg |
10MHz bandwidth (the [[511]]) or an instrument with DC response (the [[512]]).
caption=Tektronix 514 front |
The 514 provides DC response and 10MHz bandwidth.   
introduced=1949 |
discontinued=1956  |
 
manuals=
* [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.
 
It was designed by Tektronix engineers [[Bob Davis]] and [[Dick Rhiger]].
 
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]]). 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).
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 an [[OD3]] gas regulator tube.
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]]. 
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]].


* [http://bama.edebris.com/download/tek/514d/Tek%20514D%20Series%20A%20Manual.pdf Tektronix 514D Manual (PDF)]
{{BeginSpecs}}
{{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==


<gallery>
<gallery>
Image:Tek 514d-vert schem2.png
Tek 514d front.jpg          | Front
Tek 514 with bk curve tracer.jpg|514AD with B&K Curve Tracer
Tek 514d dist amp.jpg      | Distributed vertical amp
Tek 514d delay trimmers.jpg | Delay line trimmer caps
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:Monolithic tube scopes]]