7B87: Difference between revisions
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|designers=Art Metz | |designers=Art Metz | ||
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* [http://bama.edebris.com/download/tek/7b87/tek-7b87.pdf | * [[Media:070-2788-00.pdf|Tektronix 7B87 Instruction Manual]] (1986, OCR)<br /><small>''[http://bama.edebris.com/download/tek/7b87/tek-7b87.pdf Alternate Copy @ BAMA] | ||
}} | }} | ||
The '''Tektronix 7B87''' is a 400 MHz time base plugin for 7000-series scopes. | The '''Tektronix 7B87''' is a 400 MHz time base plugin for 7000-series scopes. | ||
Revision as of 02:08, 10 March 2022
The Tektronix 7B87 is a 400 MHz time base plugin for 7000-series scopes. It is specifically designed to be used in the "B" Horizontal bay of the 7854 digital scope for which it provides a clock for single-sweep acquisition. Otherwise it is similar to the 7B85. It has no provision for X-Y mode.
When used in a scope other than the 7854, the 7B87 can be used as a delaying timebase even though the delay mode buttons are labeled differently.
Key Specifications
| Sweep | 5 s/Div to 10 ns/Div in 1-2-5 sequence, ×10 magnifier down to 1 ns/Div, variable to ×2.5 |
|---|---|
| Jitter | 0.1 ns or less |
| Trigger sensitivity | 0.3 Div to 50 MHz, 1.5 Div to 400 MHz |
Pictures
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7B87 front
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Left side
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Right side
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7B87 in a 7854
Custom ICs used in the 7B87
| Page | Model | Part nos | Description | Designers | Used in |
|---|---|---|---|---|---|
| 155-0049-00 | M079G | 155-0049-00 • 155-0049-01 • 155-0049-02 | sweep control with lockout | Bill DeVey | 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 | 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 |
| 155-0185-00 | M187 | 155-0185-00 | four-digit Counter, latch and D/A converter/DVM | Don Larson | 7B15 • 7B85 • 7B87 |