7B50A
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The Tektronix 7B50A is a redesign of the 100 MHz 7B50 timebase plug-in for 7000-series scopes, introduced in 1976.
The 7B50A was nothing more than a 7B80 with its fastest calibrated sweep rate limited to 5 ns/div via a modified cam-switch that locked out the two fastest settings.
Key Specifications
| Sweep | 50 ns/Div to 5 s/Div (1–2–5), ×10 magnifier (down to 5 ns/Div), variable sweep (up to ×2.5) and holdoff (up to ×2 sweep lengths at 20 ms/Div and faster) |
|---|---|
| Excluded sweep | First 10 ns in 78xx, 79xx; First 20 ns in 77xx; First 50 ns in other mainframes |
| Trigger | 50 mV or 0.3 Div up to 50 MHz, 250 mV or 1.5 Div up to 150 MHz; AC >30 Hz, LF REJ >30 kHz, HF REJ <50 kHz |
| Jitter | <500 ps at 150 MHz |
| Ext. Trigger | Max. 250 V DC+peak AC, 1 MΩ // 20 pF |
| Sweep/Trigger Modes | Peak-Peak Auto, Auto, Norm, Single Sweep |
X-Y operation
In the 7B50A, like in the 7B80, X-Y mode was an option (Opt.2).
Links
Documents Referencing 7B50A
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Patents that may apply to 7B50
| Page | Title | Inventors | Filing date | Grant date | Links |
|---|---|---|---|---|---|
| Patent US 3562464A | Cam actuated switch having movable and fixed contacts on circuit board | Howard Vollum • Willem H Verhoef • Tony Sprando | 1968-10-07 | 1971-02-09 | Cam switches • 2701 • 2703 • 432 • 434 • 465 • 475 • 5A38 • 5A45 • 7A15 • 7A16A • 7A18 • 7A19 • 7A24 • 7A26 • 7B10 • 7B15 • 7B50 • 7B51 • 7B52 • 7B53A • 7B50A • 7B70 • 7B71 • 7B80 • 7B85 • 7B87 • 7B92 • 7B92A • 7D01 • 7D12 • 7D15 • 7J20 • 7S12 • 7T11 • 7T11A |
| Patent US 3584174A | Push-button switch apparatus having cam actuated switch contacts and selective illumination means | Tony Sprando • Peter S Winkelmann | 1969-06-09 | 1971-06-08 | Back-lit switches • 7A11 • 7A12 • 7A13 • 7A14 • 7A16 • 7A16P • 7A22 • 7A42 • 7B42N • 7B50 • 7B51 • 7B52 • 7B53A • 7B70 • 7B71 • 7B92 • 7B92A • 7D10 • 7D11 • 7D12 • 7D114 • 7D15 • 7D20 • 7F10 • 7L5 • 7L12 • 7L13 • 7L14 • 7L18 • 7M13 • 7S11 • 7S12 • 7T11 • 067-0587-00 • 067-0587-01 • 067-0587-02 • 067-0587-10 |
Pictures
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7B50A
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7B50A Opt.2 (X-Y)
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RHS
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LHS with opt 2
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7B50A bottom
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7B50A rear
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7B50A Opt.2 top
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Components
Some Parts Used in the 7B50A
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 155-0109-00 | 155-0109-00 • 155-0109-01 | Monolithic integrated circuit | trigger | 5B25N • 5B31 • 5B40 • 5B42 • 5B44 • 5S14N • 7B50A • 7B53A • 7B80 • 7B85 • 7B87 • 7B81P • 7B90P • 7S14 • 7612D • SC502 • SC503 • SC504 |
| 155-0126-00 | 155-0126-00 | Monolithic integrated circuit | trigger source selector and P-P auto amplifier | 7B50A • 7B80 • 7B85 • 7B87 • 7B81P • 7B90P |