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{{Plugin Sidebar| | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
summary=1 GHz | |type=7B15 | ||
image= | |summary=1 GHz delaying timebase | ||
caption=7B15| | |image=7b15-front.jpg | ||
|caption=7B15 | |||
|introduced=1978 | |||
series= | |discontinued=1990 | ||
manuals= | |series=7000-series scopes | ||
* [ | |designers=Art Metz;Bruce Hofer;Val Garuts | ||
* [ | |manuals= | ||
* [[Media:070-2319-00.pdf|7B15 Operator's Manual]] (OCR) | |||
* [[Media:070-2318-00.pdf|7B15 Instruction Manual]] (OCR) | |||
}} | }} | ||
The '''Tektronix 7B15''' is a 1 GHz delaying time base for [[7000-series scopes]], | |||
in particular, the 1 GHz [[7104]] (typically used with [[7A29]] vertical amplifiers and a [[7B10]] delayed time base). | |||
The 7B15 was designed by [[Art Metz]], [[Bruce Hofer]], and [[Val Garuts]]. | |||
The 7B15 | The 7B15 provides digital readout of delay and delta times. | ||
In effect, the 7B15/[[7B10]] pair are speed-improved versions of the [[7B85]]/[[7B80]]. | |||
{{BeginSpecs}} | |||
{{Spec | Sweep | 200 ms/Div to 2 ns/Div in 1−2−5 sequence, ×10 magnifier down to 200 ps/Div, variable to ×2.5}} | |||
{{Spec | Triggering | to 1 GHz }} | |||
{{Spec | Jitter | less than 30 ps at 1 GHz }} | |||
{{Spec | Features | | |||
* Digital read-out of delay and delta times | |||
* Variable Trigger Holdoff | |||
* HF Sync mode | |||
}} | |||
{{EndSpecs}} | |||
==Links== | |||
* [[Patent US 4109182A]] | |||
{{Documents|Link=7B15}} | |||
{{PatentLinks|7B15}} | |||
==Internals== | |||
A ramp generator is started when the trigger signal arrives. | |||
The delayed sweep is started when a comparator detects that the ramp has reached a control voltage, set by the front panel knobs. | |||
The control voltage is therefore proportional to the amount of delay and is measured using a [[155-0185-00]] 4-digit DVM circuit, | |||
then displayed on the [[7000 series readout system|oscilloscope readout]]. | |||
The display, scaled in seconds, provides the operator with a precise readout of the delay. | |||
== | Other custom Tek ICs used: [[155-0150-00]] trigger detector, [[155-0160-00]] trigger amplifier. | ||
The 7B15 uses the +50 V supply provided by the mainframe. | |||
==Prices== | |||
<!-- http://www.usinflationcalculator.com/ --> | |||
{| class="wikitable" | |||
|- | |||
! Year | |||
! 1980 | |||
! 1985 | |||
! 1990 | |||
|- | |||
! Catalog price | |||
|align=right| $1,695 | |||
|align=right| $2,695 | |||
|align=right| $3,300 | |||
|- | |||
! In 2023 Dollars | |||
|align=right| $6,300 | |||
|align=right| $7,700 | |||
|align=right| $7,800 | |||
|- | |||
|} | |||
==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
7b15-front.jpg | 7B15 front panel | |||
7b15-left.jpg | left side | |||
7b15-right.jpg | right side | |||
Tek-7b15-vs-7b85-left.jpg | Family resemblance: 7B15 (top) vs. 7B85 (bottom). Left side. | |||
Tek-7b15-vs-7b85-right.jpg | Family resemblance: 7B15 (top) vs. 7B85 (bottom). Right side. | |||
Tek 7b15 front.jpg | |||
Tek 7b15.JPG | |||
</gallery> | </gallery> | ||
==Components== | |||
{{Parts|7B15}} | |||
[[Category:7000 series horizontal plugins]] | [[Category:7000 series horizontal plugins]] | ||