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The Tektronix Type 506 is an oscilloscope with bandwidth above 20MHz that uses
{{Oscilloscope Sidebar |manufacturer=Tektronix |designers=|series=560-series scopes|
[[2-series or 3-series horizontal plug-ins]]
model= 506 |
but special high-speed vertical plug-ins, the [[9A1]], and [[9A2]].
summary=20 MHz scope |
image=Tek 506 trace.jpg |
caption =506 with [[9A1]] and [[3B1]] |
introduced = 1964 |
discontinued = (?) |
manuals=
* [[Media:070-445.pdf|Tektronix 506 Manual]] (PDF)
* [[Media:Tek 506 mod 129b.pdf|Tektronix 506 Mod 129B (PDF, needs OCR)]]


* [http://w140.com/tek_506_Manual_070-445_Aug_1964.pdf Tektronix 506 Manual (PDF)]
}}
The '''Tektronix Type 506''' is an oscilloscope with bandwidth above 20 MHz that uses [[560-series plug-ins|560-series horizontal plug-ins]] but special high-speed vertical plug-ins, the [[9A1]], and [[9A2]].


Like the scopes in the [[560-series_scopes|560 Series]], the 506 mainframe contains neither vertical nor horizontal amplifiers; the plug-ins directly drive the CRT deflection plates.
{{MissingSpecs}}
The 506 uses the [[T5033|T5033-31-1]] CRT, which has P31 [[phosphor]].  It uses no post-deflection acceleration, total accelerating voltage is 3.5 kV.
==Internals==
The CRT circuit uses two [[5642]] high-voltage rectifier tubes, one for the CRT cathode voltage and one for the intensification voltage, which is applied to a second grid in the CRT.
The calibrator signal is produced by shaping mains frequency into a square wave.
It is not just a simple clipping circuit. To speed up the edges, positive feedback is used.
A cross-connected triode and pentode form a schmitt trigger.
The input of the shaping circuit is the cathode of the triode and the output is the cathode of the pentode, which drives a voltage divider whose tap is selected by the front panel calibrator rotary switch.
The power supply is fairly typical of Tektronix scopes of the period.
An [[OG3]] tube establishes a −82 V reference voltage in the −100 V power supply section.
The −100 V supply is then used as the reference voltage for the other power supply sections.
Output tubes are used for all of the regulated supply voltages except the −12.2 V supply, which uses a [[2N1529]] germanium PNP transistor.
==Pictures ==
<gallery>
<gallery>
File:Tek 506 331023143159.jpg
Tek 506 trace.jpg|506 with [[9A1]] and [[3B1]]
Tek 506 331023143159.jpg
Tek_506_power_supply.png|Power Supply
Tek_506_crt_circuit.png|CRT Circuit
Tek 506 calibrator.png|Calibrator
Tek 506 interconnecting.png|Interconnecting Sockets
</gallery>
</gallery>


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[[Category:560 series scopes]]
[[Category:560 series scopes]]
[[Category:Specifications needed]]
[[Category:Specifications needed]]
[[Category:Introduced in 1964]]

Revision as of 12:27, 20 August 2021

Tektronix 506
20 MHz scope
506 with 9A1 and 3B1

Produced from 1964 to (?)

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix Type 506 is an oscilloscope with bandwidth above 20 MHz that uses 560-series horizontal plug-ins but special high-speed vertical plug-ins, the 9A1, and 9A2.

Like the scopes in the 560 Series, the 506 mainframe contains neither vertical nor horizontal amplifiers; the plug-ins directly drive the CRT deflection plates.

Key Specifications

  • please add

The 506 uses the T5033-31-1 CRT, which has P31 phosphor. It uses no post-deflection acceleration, total accelerating voltage is 3.5 kV.

Internals

The CRT circuit uses two 5642 high-voltage rectifier tubes, one for the CRT cathode voltage and one for the intensification voltage, which is applied to a second grid in the CRT.

The calibrator signal is produced by shaping mains frequency into a square wave. It is not just a simple clipping circuit. To speed up the edges, positive feedback is used. A cross-connected triode and pentode form a schmitt trigger. The input of the shaping circuit is the cathode of the triode and the output is the cathode of the pentode, which drives a voltage divider whose tap is selected by the front panel calibrator rotary switch.

The power supply is fairly typical of Tektronix scopes of the period. An OG3 tube establishes a −82 V reference voltage in the −100 V power supply section. The −100 V supply is then used as the reference voltage for the other power supply sections. Output tubes are used for all of the regulated supply voltages except the −12.2 V supply, which uses a 2N1529 germanium PNP transistor.

Pictures