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 dual-trace amplifier plug-in | The '''Tektronix Type 3A1''' is a 10 MHz dual-trace amplifier plug-in for [[560-series scopes]], [[introduced in 1962]]. | ||
for [[560-series scopes]]. | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
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{{Spec | Risetime | 35 ns }} | {{Spec | Risetime | 35 ns }} | ||
{{Spec | Input impedance | 1 MΩ // 47 pF }} | {{Spec | Input impedance | 1 MΩ // 47 pF }} | ||
{{Spec | Deflection factor | 10 mV/div to 10 V/div, | {{Spec | Deflection factor | 10 mV/div to 10 V/div, 1−2−5 sequence}} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
Revision as of 23:25, 27 May 2021
Template:Plugin Sidebar 2 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 |
|---|---|
| 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
