3A1: Difference between revisions
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* [[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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The '''Tektronix Type 3A1''' is a 10 MHz dual-trace amplifier plug-in for [[560-series scopes]], [[introduced in 1962]]. | The '''Tektronix Type 3A1''' is a 10 MHz dual-trace amplifier plug-in for [[560-series scopes]], [[introduced in 1962]]. It is compatible with any scopes in the 560 series other than the [[560]]. | ||
{{BeginSpecs}} | {{BeginSpecs}} |
Revision as of 18:46, 16 September 2023
The Tektronix Type 3A1 is a 10 MHz dual-trace amplifier plug-in for 560-series scopes, introduced in 1962. It is compatible with any scopes in the 560 series other than the 560.
Key Specifications
Bandwidth | 10 MHz |
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Risetime | 35 ns |
Deflection | 10 mV/div to 10 V/div, 1−2−5 sequence |
Input impedance | 1 MΩ // 47 pF |
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.
Tektronix added a 260 ns delay line to the 3A1 to make the 3A6.
Pictures
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3A1 Front
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3A1 Right
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3A1 Right
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3A1 Top
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3A1 Bottom
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3A1 Input Amplifier Schematic