3A3: Difference between revisions
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{{Plugin Sidebar| | {{Plugin Sidebar | ||
manufacturer=Tektronix |series=560-series scopes |type=3A3 | | |manufacturer=Tektronix | ||
summary= | |series=560-series scopes | ||
image=3a3 front.jpg | | |type=3A3 | ||
caption=Type 3A3 Front View (SN 4990 up) | |summary=dual-trace differential amplifier | ||
designers=Roy Hayes| | |image=3a3 front.jpg | ||
introduced=1964 | | |caption=Type 3A3 Front View (SN 4990 up) | ||
discontinued=1972 | | |designers=Roy Hayes | ||
manuals= | |introduced=1964 | ||
|discontinued=1972 | |||
|manuals= | |||
* [[Media:070-408.pdf|Tektronix 3A3 Manual (early)]] (PDF) / [https://bama.edebris.com/download/tek/3a3/3a3early.djvu (DjVu)] | * [[Media:070-408.pdf|Tektronix 3A3 Manual (early)]] (PDF) / [https://bama.edebris.com/download/tek/3a3/3a3early.djvu (DjVu)] | ||
* [[Media:070-0787-00.pdf|Tektronix 3A3 Manual (late)]] (PDF) / [https://bama.edebris.com/download/tek/3a3/3a3late.djvu (DjVu)] | * [[Media:070-0787-00.pdf|Tektronix 3A3 Manual (late)]] (PDF) / [https://bama.edebris.com/download/tek/3a3/3a3late.djvu (DjVu)] | ||
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* [[Media:Tek 3a3 cal outline.pdf|Tektronix 3A3 Calibration Outline (PDF, OCR)]] | * [[Media:Tek 3a3 cal outline.pdf|Tektronix 3A3 Calibration Outline (PDF, OCR)]] | ||
}} | }} | ||
The '''Tektronix 3A3''' is a dual trace differential amplifier for [[560-series scopes]]. | The '''Tektronix 3A3''' is a dual-trace differential amplifier plug-in for [[560-series scopes]]. | ||
It was designed by [[Roy Hayes]]. | It was designed by [[Roy Hayes]]. | ||
Revision as of 06:08, 17 September 2023
The Tektronix 3A3 is a dual-trace differential amplifier plug-in for 560-series scopes. It was designed by Roy Hayes.
Key Specifications
Bandwidth | 500 kHz or 5 kHz (switch-selectable) |
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Deflection | 0.1 mV/Div to 10 V/Div, in 1−2−5 steps |
Input impedance | 1 MΩ // 47 pF |
Internals
Early 3A3s use a 7586 Nuvistor for the front end cathode follower. Serial numbers 4990 and up use a dual JFET.
Pictures
Older version (below SN 4990, Nuvistor in input stage)
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3A3 Front
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3A3 Right
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3A3 Left
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3A3, Nuvistor in Input Stage
Newer version (from SN 4990 up, FET in input stage)
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3A3 Front
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3A3 Right
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3A3 Left
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3A3 Top
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3A3 Bottom
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3A3, Dual JFET in Input Stage