570: Difference between revisions

Revision as of 08:29, 17 February 2020

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Curve tracer for tubes Tektronix 570 front Produced from 1955 to (?) Manuals Tektronix 570 Manual 070-167 (good quality, OCR, PDF) Tektronix 570 Manual (good quality, PDF) Tektronix 570 Manual (mediocre quality, PDF) Tektronix 570 Factory Calibration Procedure (PDF) Media:Tek 570 fcp feb 1964.pdf (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix 570 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

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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.

Pictures

Early Tektronix 570

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

12-pin adaptor
12-pin adaptor
7-pin miniature adaptor
7-pin miniature adaptor

@@ Line 41: / Line 41: @@
 ==Pictures==
+=== Early Tektronix 570 ===
+<gallery>
+Tek570-test-setup.jpg
+Tek 570 top controls and storage.jpg
+</gallery>
+===Tektronix 570 Serial Number 5010===
 <gallery>
 Tektronix-570-Outside-Front.jpg
-Tek570-test-setup.jpg
 Tektronix-570-Inside-Right.jpg
 Tektronix-570-Inside-Left.jpg
@@ Line 51: / Line 56: @@
 Tektronix-570-Outside-Front-Close2.jpg
 Tektronix-570-Inside-Right-Close3.jpg
-Tek 570 top controls and storage.jpg
+</gallery>
+=== Tektronix 570 Serial Number 5055 ===
+<gallery>
 tek_570_sn5055_1.jpg
 tek_570_sn5055_2.jpg
@@ Line 64: / Line 71: @@
 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
@@ Line 76: / Line 86: @@
 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
@@ Line 85: / Line 98: @@
 </gallery>
-===Adaptors===
+===Adaptors for Different Tube Bases===
 <gallery>
 Tek 570 12-pin fixture 1.jpg|12-pin adaptor