Difference between revisions of "514"

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The Tektronix 514 is a monolithic general-purpose oscilloscope.
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{{Oscilloscope Sidebar |
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title=Tektronix 514|
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summary=10 MHz Tube scope |
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image=Tek 514d front.jpg |
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caption=Tektronix 514 front |
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introduced=1949 |
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discontinued=1956  |
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manuals=
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* [http://bama.edebris.com/download/tek/514d/Tek%20514D%20Series%20A%20Manual.pdf Tektronix 514D Manual (PDF)]
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* [[Media:Tek 514 history parts list.pdf|Tektronix 514 History Parts List (PDF)]]
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}}
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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]].
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Using a three-section [[distributed amplifier]], it provides frequency response from DC to 10 MHz.
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Prior to the 514, customers had to choose between an instrument with 10 MHz bandwidth (the [[511]])
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''or'' an instrument with DC response (the [[512]]). The 514 provides DC response ''and'' 10 MHz bandwidth. 
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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).
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The standard [[phosphor]] for a 514 was P1.
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The deflection sensitivity of the CRT is approximately 27 V/cm vertical and 32 V/cm horizontal.
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The power supply is regulated based on a −140 V reference produced by an [[OD3]] gas regulator tube.
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The +225 V supply uses three [[5V4G]] rectifier tubes in parallel.
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Throughout its production run, a 'D' variant was available (514D, with the 'D' being stamped in by hand
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on some models), which has a 24-section 250 ns lumped L-C [[delay line]]. 
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There was also an 'A' version (514-A & 514-AD respectively), which appears to have been available in 1954.
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''(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?)''
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It has no [[thermal cutoff]].
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{{BeginSpecs}}
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{{Spec | Frequency response | DC to 10 MHz }}
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{{Spec | Input impedance |1 MΩ // 30 pF }}
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{{Spec | Vertical deflection | 100 V/cm down to 300 mV/cm (DC) / 30 mV/cm (AC), 1 - 3 - 10 sequence}}
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{{Spec | Weight | 28.1 kg (62 pounds) }}
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{{Spec | Power consumption | 375 W }}
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{{EndSpecs}}
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==Links==
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* [http://paulcarbone.com/blog/?p=909 Paul's research on models, variants, and years available]
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* [[Media:Tektronix Photo Manual 1952.pdf| Tektronix Photo Manual 1952]]
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==Pictures==
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<gallery>
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Tek 514d front.jpg          | Front
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Tek 514 with bk curve tracer.jpg|514AD with B&K Curve Tracer
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Tek 514d dist amp.jpg      | Distributed vertical amp
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Tek 514d delay trimmers.jpg | Delay line trimmer caps
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Tek 514d bottom.jpg        | Bottom view
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Tek514-PowerSupply.jpg      | Power Supply
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Tek514-upperDeckRear.jpg    | Upper Deck, rear
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Tek514-upperDeckFront.jpg  | Upper Deck, front
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Tek514-lowerDeckFront.jpg  | Lower Deck, front
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Tek514-lowerDeckRear.jpg    | Lower Deck, rear
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Tek514-fanMotor.jpg        | Fan Motor
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Tek514-lineSocket.jpg      | Line Socket
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Tek 514d-vert schem2.png    | Vertical amp schematic
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Tek_514_Vertical_preamp_early.jpg | Vertical preamp, early
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Tek_514_HV_PS_early.jpg    | HV Power Supply, early
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Tek 514ad 5535 1.jpg|514AD
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Tek 514ad 5535 2.jpg|514AD
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Tek 514ad 5535 3.jpg|514AD
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Tek 514ad 5535 4.jpg|514AD
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Tek 514ad 5535 5.jpg|514AD
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Tek 514ad 5535 6.jpg|514AD
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Tek 514ad 5535 7.jpg|514AD
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Tek 514ad 5535 8.jpg|514AD
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Tek 514ad 5535 9.jpg|514AD
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Tek 514ad 5535 10.jpg|514AD
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</gallery>
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[[Category:Monolithic tube scopes]]

Latest revision as of 08:21, 21 March 2019

Tektronix 514
10 MHz Tube scope
Tektronix 514 front

Produced from 1949 to 1956

Manuals
Manuals – Specifications – Links – Pictures

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.

Specifications

Frequency response DC to 10 MHz
Input impedance 1 MΩ // 30 pF
Vertical deflection 100 V/cm down to 300 mV/cm (DC) / 30 mV/cm (AC), 1 - 3 - 10 sequence
Weight 28.1 kg (62 pounds)
Power consumption 375 W

Links

Pictures