7B50: Difference between revisions
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|discontinued=1988 | |discontinued=1988 | ||
|series=7000-series scopes | |series=7000-series scopes | ||
|designers=Murlan Kaufman | |designers=Murlan Kaufman | ||
|manuals= | |manuals= | ||
'''7B50''' | '''7B50''' | ||
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It is specified for triggering up to 100 MHz. Triggering uses [[tunnel diodes]]. | It is specified for triggering up to 100 MHz. Triggering uses [[tunnel diodes]]. | ||
The sweep is fully discrete, no ICs. | The sweep is fully discrete, no ICs. | ||
There is a | |||
There is also a 7B50A. | |||
[https://vintagetek.org/years-at-tektronix-hofer/ According to Bruce Hofer], | |||
<blockquote> | |||
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 2 fastest settings. | |||
</blockquote> | |||
The task of designing the 7B50 was inherited and completed by [[Murlan Kaufman]]. | The task of designing the 7B50 was inherited and completed by [[Murlan Kaufman]]. |
Revision as of 12:12, 9 January 2023
The Tektronix 7B50 is a timebase plug-in for 7000-series scopes, particularly the 7500 series. It is specified for triggering up to 100 MHz. Triggering uses tunnel diodes. The sweep is fully discrete, no ICs.
There is also a 7B50A. According to Bruce Hofer,
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 2 fastest settings.
The task of designing the 7B50 was inherited and completed by Murlan Kaufman.
Key Specifications
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X-Y operation
The 7B50 has a dedicated switch to put it in "amplifier mode" for X-Y operation. In this mode, the Trigger Source switch controls the signal source – internal from a vertical plug-in via the trigger path, or external — and the Trigger Coupling switch controls AC vs. DC coupling. In amplifier mode, gain can be varied using an uncalibrated potentiometer.
Pictures
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7B50
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7B50A
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7B50A
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7B50A bottom
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7B50A rear
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7B50A top
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7B50
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7B50
Custom ICs used in the 7B50
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Custom ICs used in the 7B50A
Page | Model | Part nos | Description | Designers | Used in |
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155-0109-00 | M120B | 155-0109-00 • 155-0109-01 | trigger | Gary Vance | 5B25N • 5B31 • 5B40 • 5B42 • 5B44 • 5S14N • 7B50A • 7B53A • 7B80 • 7B85 • 7B87 • 7B81P • 7B90P • 7S14 • 7612D • SC502 • SC503 • SC504 |
155-0126-00 | M121 | 155-0126-00 | trigger source selector and P-P auto amplifier | Art Metz | 7B50A • 7B80 • 7B85 • 7B87 • 7B81P • 7B90P |