7B87: Difference between revisions
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{{Plugin Sidebar | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
summary=400 MHz | |type=7B87 | ||
image=Tek 7b87 front.jpg | | |summary=400 MHz time base for 7854 | ||
caption=Tektronix 7B87 Timebase plug-in| | |image=Tek 7b87 front.jpg | ||
introduced= | |caption=Tektronix 7B87 Timebase plug-in | ||
discontinued= | |introduced=1981 | ||
|discontinued=1986 | |||
series= | |series=7000-series scopes | ||
manuals= | |designers=Art Metz | ||
* [ | |manuals= | ||
* [ | * [[Media:070-2788-00.pdf|Tektronix 7B87 Instruction Manual]] (1986, split schematics, legible, OCR) | ||
* [[Media:070-2788-00 whole schematics lowres.pdf|Tektronix 7B87 Instruction Manual]] (1986, whole schematics but barely legible, OCR) | |||
}} | }} | ||
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. | ||
It is specifically designed to be used in the B Horizontal bay of the [[7854]] digital scope for which it | 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 via [[7000 Series plug-in interface|interface pin B5]], ''Aux Sweep Gate''. | ||
provides a clock for single-sweep acquisition. Otherwise it is similar to the | 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. | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Sweep | 5 s/Div to 10 ns/Div in 1-2-5 sequence, ×10 magnifier down to 1 ns/Div, variable to ×2.5}} | {{Spec | Sweep | 5 s/Div to 10 ns/Div in 1-2-5 sequence, ×10 magnifier down to 1 ns/Div, variable to ×2.5}} | ||
| Line 22: | Line 24: | ||
{{Spec | Trigger sensitivity | 0.3 Div to 50 MHz, 1.5 Div to 400 MHz }} | {{Spec | Trigger sensitivity | 0.3 Div to 50 MHz, 1.5 Div to 400 MHz }} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
==Prices== | |||
{| class="wikitable" | |||
|- | |||
! Year | |||
! 1981 | |||
! 1984 | |||
! 1986 | |||
|- | |||
! Catalog price | |||
| align="right" | $1,400 | |||
| align="right" | $1,670 | |||
| align="right" | $1,800 | |||
|- | |||
! In 2023 Dollars | |||
| align="right" | $4,700 | |||
| align="right" | $4,900 | |||
| align="right" | $5,000 | |||
|- | |||
|} | |||
==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
Tek 7b87 front.jpg | 7B87 front | |||
Tek-7b87-left.jpg | Left side | |||
Tek-7b87-right.jpg| Right side | |||
Tek7854-with-keyboard.jpg | 7B87 in a [[7854]] | |||
</gallery> | </gallery> | ||
==Components== | |||
{{Parts|7B87}} | |||
[[Category:7000 series horizontal plugins]] | [[Category:7000 series horizontal plugins]] | ||
Latest revision as of 11:11, 8 December 2023
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 via interface pin B5, Aux Sweep Gate. 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 |
Prices
| Year | 1981 | 1984 | 1986 |
|---|---|---|---|
| Catalog price | $1,400 | $1,670 | $1,800 |
| In 2023 Dollars | $4,700 | $4,900 | $5,000 |
Pictures
-
7B87 front
-
Left side
-
Right side
-
7B87 in a 7854
Components
Some Parts Used in the 7B87
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 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 |
| 155-0185-00 | 155-0185-00 | Monolithic integrated circuit | four-digit Counter, latch and D/A converter/DVM | 7B15 • 7B85 • 7B87 |