3A1: Difference between revisions
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* [http://bama.edebris.com/download/tek/3a1/3a1.djvu | * [[Media:070-0343-01.pdf|Tektronix 3A1 Manual]] (PDF) / [http://bama.edebris.com/download/tek/3a1/3a1.djvu @ BAMA] (DJVU) | ||
* [[Media:Tek 3a1 fcp nov 1963.pdf|Tektronix 3A1 Factory Calibration Procedure, November 1963]] | * [[Media:Tek 3a1 fcp nov 1963.pdf|Tektronix 3A1 Factory Calibration Procedure, November 1963]] | ||
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Revision as of 09:58, 20 August 2021
The Tektronix Type 3A1 is a 10 MHz dual-trace amplifier plug-in for 560-series scopes, introduced in 1962.
Key Specifications
Bandwidth | 10 MHz |
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Risetime | 35 ns |
Input impedance | 1 MΩ // 47 pF |
Deflection factor | 10 mV/div to 10 V/div, 1−2−5 sequence |
Internals
The input signal passes through compensated attenuators and then into a cathode-follower stage made of two 7586 Nuvistor tubes.
Channel switching in ALTERNATE mode is done using diodes. The output stage that drives the vertical deflection plates of the scope uses a pair of 8233 frame grid power pentode tubes.
Pictures
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Front view
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Right side
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Right side
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Top view
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Bottom view
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input amplifier schematic