3A1: Difference between revisions
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{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Bandwidth | 10 MHz }} | {{Spec | Bandwidth | 10 MHz }} | ||
{{Spec | Risetime | {{Spec | Risetime | 35 ns }} | ||
{{Spec | Deflection | 10 mV/div to 10 V/div, 1−2−5 sequence}} | |||
{{Spec | Input impedance | 1 MΩ // 47 pF }} | {{Spec | Input impedance | 1 MΩ // 47 pF }} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
Revision as of 09:12, 21 January 2022
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 |
| 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.
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
