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The Tektronix 570 is a curve tracer for tubes.
{{Instrument Sidebar
|class=Curve Tracer
|manufacturer=Tektronix
|model=570
|summary=Curve tracer for tubes
|image=Tektronix-570-Outside-Front.jpg
|caption=Tektronix 570 front
|introduced=1955
|discontinued=(?)
|designers=John Kobbe
|manuals=
* [[Media:070-167.pdf|Tektronix 570 Manual 070-167]] (PDF, OCR, good quality)
* [[Media:070-359.pdf|Tektronix 570 Manual 070-359 (1963)]] (PDF, good quality)
* [https://w140.com/mmm/tek-570.pdf Tektronix 570 Manual (mediocre quality, PDF)]
* [https://w140.com/tek_fcp/tek_570_fac_cal.pdf Tektronix 570 Factory Calibration Procedure 1959 (PDF)]
* [[Media:Tek 570 fcp feb 1964.pdf|Tektronix 570 Factory Calibration Procedure 1964 (PDF)]]
* [[Media:Tek 570 fcp.pdf]]
}}
The '''Tektronix 570''' was Tek's first curve tracer.  It is a curve tracer for tubes, introduced in 1955.
It sweeps the plate voltage between zero and a selectable maximum voltage while "stepping" the control grid through a set of voltages. 
 
A selectable screen voltage is available for testing tubes with screens. 
The plate voltage is measured and applied to the X-axis of the display. 
Plate current is measured and amplified and is applied to the Y-axis of the display. 
 
{{MissingSpecs}}
 
==Internals==
 
The 570 contains five transformers:
* T310: center-tapped isolation transformer for plate sweep
* T340: multitap transformer for heater voltages
* T401: multitap autotransformer for selecting peak plate voltage, feeds T310
* T501: transformer for floating supplies and screen voltage supply
* T620: transformer for 60 kHz HV power oscillator for CRT voltages
 
The screen supply is regulated and uses a [[6CD6GA]] tube as the series regulator.
 
The vertical and horizontal amplifiers are almost identical. 
The first stage is a differential amplifier made of two [[6AU6]] tubes.
The second stage is a differential amplifier made of both halves of a [[6BQ7A]].
 
A [[T0520|T52P1]] CRT is standard in the 570.
 
==Pictures==
 
=== Early Tektronix 570 (Brown Era) ===
<gallery>
Tek570-test-setup.jpg
Tek 570 top controls and storage.jpg
</gallery>
===Tektronix 570 Serial Number 5010===
<gallery>
Tektronix-570-Outside-Front.jpg
Tektronix-570-Inside-Right.jpg
Tektronix-570-Inside-Left.jpg
Tektronix-570-Inside-Left-Close2.jpg
Tektronix-570-Inside-Bottom.jpg
Tektronix-570-Inside-Left-Close.jpg
Tektronix-570-Outside-Front-Close2.jpg
Tektronix-570-Inside-Right-Close3.jpg
</gallery>
=== Tektronix 570 Serial Number 5055 ===
<gallery>
tek_570_sn5055_1.jpg
tek_570_sn5055_2.jpg
tek_570_sn5055_3.jpg
tek_570_sn5055_4.jpg
tek_570_sn5055_5.jpg
tek_570_sn5055_6.jpg
tek_570_sn5055_7.jpg
tek_570_sn5055_8.jpg
tek_570_sn5055_9.jpg
tek_570_sn5055_10.jpg
tek_570_sn5055_11.jpg
tek_570_sn5055_12.jpg
</gallery>
=== Tektronix 570 Serial Number 5148 ===
<gallery>
tek_570_sn5148_1.jpg
tek_570_sn5148_2.jpg
tek_570_sn5148_3.jpg
tek_570_sn5148_4.jpg
tek_570_sn5148_5.jpg
tek_570_sn5148_6.jpg
tek_570_sn5148_7.jpg
tek_570_sn5148_8.jpg
tek_570_sn5148_9.jpg
tek_570_sn5148_10.jpg
tek_570_sn5148_11.jpg
tek_570_sn5148_12.jpg
</gallery>
=== Tektronix 570 Serial Number 5429 ===
<gallery>
Tek 570 sn5429 1.jpg
Tek 570 sn5429 2.jpg
Tek 570 sn5429 3.jpg
Tek 570 sn5429 4.jpg
Tek 570 sn5429 5.jpg
Tek 570 sn5429 6.jpg
Tek 570 sn5429 7.jpg
</gallery>
 
===Adaptors for Different Tube Bases===
<gallery>
Tek 570 12-pin fixture 1.jpg|12-pin adaptor
Tek 570 12-pin fixture 2.jpg|12-pin adaptor
Tek 570 seven pin miniature adapter 1.jpg|7-pin miniature adaptor
Tek 570 seven pin miniature adapter 2.jpg|7-pin miniature adaptor
Tek 570 assorted adapters.jpg
</gallery>
[[Category:Curve tracers]]
 
[[Category:Specifications needed]]
[[Category:Introduced in 1955]]

Revision as of 13:08, 4 March 2022

Tektronix 570
Curve tracer for tubes
Tektronix 570 front

Produced from 1955 to (?)

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 570 was Tek's first curve tracer. It is a curve tracer for tubes, introduced in 1955. It sweeps the plate voltage between zero and a selectable maximum voltage while "stepping" the control grid through a set of voltages.

A selectable screen voltage is available for testing tubes with screens. The plate voltage is measured and applied to the X-axis of the display. Plate current is measured and amplified and is applied to the Y-axis of the display.

Key Specifications

  • please add

Internals

The 570 contains five transformers:

  • T310: center-tapped isolation transformer for plate sweep
  • T340: multitap transformer for heater voltages
  • T401: multitap autotransformer for selecting peak plate voltage, feeds T310
  • T501: transformer for floating supplies and screen voltage supply
  • T620: transformer for 60 kHz HV power oscillator for CRT voltages

The screen supply is regulated and uses a 6CD6GA tube as the series regulator.

The vertical and horizontal amplifiers are almost identical. The first stage is a differential amplifier made of two 6AU6 tubes. The second stage is a differential amplifier made of both halves of a 6BQ7A.

A T52P1 CRT is standard in the 570.

Pictures

Early Tektronix 570 (Brown Era)

Tektronix 570 Serial Number 5010

Tektronix 570 Serial Number 5055

Tektronix 570 Serial Number 5148

Tektronix 570 Serial Number 5429

Adaptors for Different Tube Bases