3A3: Difference between revisions
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discontinued=1972 | | discontinued=1972 | | ||
manuals= | manuals= | ||
* [[Media:070-408.pdf|Tektronix 3A3 Manual (early)]] (PDF) / [https://bama.edebris.com/download/tek/3a3/3a3early.djvu | * [[Media:070-408.pdf|Tektronix 3A3 Manual (early)]] (PDF) / [https://bama.edebris.com/download/tek/3a3/3a3early.djvu (DjVu)] | ||
* [[Media:070-787-00.pdf|Tektronix 3A3 Manual (late)]] (PDF) / [https://bama.edebris.com/download/tek/3a3/3a3late.djvu | * [[Media:070-787-00.pdf|Tektronix 3A3 Manual (late)]] (PDF) / [https://bama.edebris.com/download/tek/3a3/3a3late.djvu (DjVu)] | ||
* [[Media:Tek 3a3 fcp june 1968.pdf|Tektronix 3A3 Factory Calibration Procedure, June 1968]] | * [[Media:Tek 3a3 fcp june 1968.pdf|Tektronix 3A3 Factory Calibration Procedure, June 1968]] | ||
* [[Media:Tek 3a3 cal outline.pdf|Tektronix 3A3 Calibration Outline (PDF, OCR)]] | * [[Media:Tek 3a3 cal outline.pdf|Tektronix 3A3 Calibration Outline (PDF, OCR)]] | ||
Revision as of 11:30, 20 August 2021
The Tektronix 3A3 is a dual trace differential amplifier for 560-series scopes. It was designed by Roy Hayes.
Key Specifications
| Bandwidth | 500 kHz or 5 kHz (switch-selectable) |
|---|---|
| Deflection | 0.1 mV/Div to 10 V/Div, 1−2−5 |
| 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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Front
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Right side
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Left side
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Nuvistor in input stage
Newer version (from SN 4990 up, FET in input stage)
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Front
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Right side
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Left side
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Top
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Bottom
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Dual JFET in input stage
