7B90P
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The Tektronix 7B90P is a digitally programmable 400 MHz time-base plug-in for the digitizing mainframes of the 7000 series. All controls are programmable except for the sweep calibration screwdriver adjustment and the external trigger input terminator switch. The local/remote state of the 7B90P is slaved to the local/remote state of the mainframe.
Key Specifications
Sweep | 10 ns/Div to 500 ms/Div (1–2–5), ×10 magnifier (down to 500 ps/Div), no variable sweep, adjustable and programmable holdoff |
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Excluded sweep | First 10 ns in 79XX programmable mainframes |
Trigger Sensitivity |
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Jitter | <100 ps at 400 MHz |
Ext. Trigger | 1 MΩ: 20 pF, max. 250 V DC+peak AC; 50 Ω: max. 1 W |
Sweep/Trigger Modes | Peak-Peak Auto, Auto, Norm, Single Sweep |
Links
Documents Referencing 7B90P
Document | Class | Title | Authors | Year | Links |
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Tekscope 1979 V11 N1.pdf | Article | An Intelligent, Programmable Transient Digitizer | Dale Aufrecht | 1979 | 7912AD • 7A16P • 7B90P |
Internals
The 7B90P is controlled by a Motorola 6800 microprocessor.
Pictures
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Front
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Front
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Right
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Right
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Left
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A late version of the 7B90P with connectors for the 021-0374-00 GPIB decoder
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Connectors for the 021-0374-00 GPIB decoder on a late 7B90P
Components
Some Parts Used in the 7B90P
Part | Part Number(s) | Class | Description | Used in |
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155-0049-00 | 155-0049-00 • 155-0049-01 • 155-0049-02 | Monolithic integrated circuit | sweep control with lockout | 335 • 464 • 465 • 466 • 475 • 475A • 475M • 485 • 5B31 • 5B40 • 5B52 • 5B42 • 5B44 • 7B53A • 7B80 • 7B85 • 7B87 • 7B92A • 7B90P • 7B10 • 7B15 • SC502 • 7B42N • AN/USM-281C • 067-0657-00 |
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 |
155-0164-00 | 155-0164-00 | Hybrid integrated circuit | time slot switch | 7A16P • 7B90P • 7A29P |
Motorola 6800 | 156-0426-00 | Monolithic integrated circuit | 8-bit microprocessor | 021-0206-00 • 021-0374-00 • 067-0902-00 • 067-1137-99 • 222 • 222A • 222PS • 2424L • 2445 • 2465 • 4051 • 7912 • 7912AD • 7A16P • 7A29P • 7B81P • 7B90P • 833 • 834 • CG5001 • CG551AP • CG5010 • CG5011 • DF1 • DF2 • DM5010 • MI5010 • SI5010 • PS5004 • PS5010 • SG5010 |
Motorola 6820 | 156-0427-00 | Monolithic integrated circuit | "Peripheral Interface Adapter (PIA)" | 021-0206-00 • 7A16P • 7B81P • 7B90P |
Motorola 6821 | 156-0427-03 | Monolithic integrated circuit | "Peripheral Interface Adapter (PIA)" | 067-1137-99 • 7A16P • 7A29P • 7B90P |