7B15: Difference between revisions

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{{Plugin Sidebar|
{{Plugin Sidebar
title=Tektronix 7B15|
|manufacturer=Tektronix
summary=1 GHz Delaying Timebase|
|type=7B15
image=Tek 7b15 front.jpg |  
|summary=1 GHz delaying timebase
caption=7B15|
|image=7b15-front.jpg  
years=?|
|caption=7B15
type=horizontal plugin|
|introduced=1978
series=[[7000-series scopes]]|
|discontinued=1990
manuals=
|series=7000-series scopes
* [http://bama.edebris.com/download/tek/7b15/tek-7b15.pdf Tektronix 7B15 Manual (PDF)]
|designers=Art Metz;Bruce Hofer;Val Garuts
* [http://w140.com/smb/7b15_sm.pdf Tektronix 7B15 Manual (OCR, PDF)]
|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 is a 1 GHz delaying time base for [[7000-series scopes]], in particular, the 1 GHz [[7104]].
The 7B15 provides digital readout of delay and delta times. 
In effect, the 7B15/[[7B10]] pair are speed-improved versions of the [[7B85]]/[[7B80]].


A typical configuration would be two [[7A29]] vertical amplifiers plus a [[7B15]] and a [[7B10]] time base.
{{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.


==Specifications==
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>
File:Tek 7b15 front.jpg
7b15-front.jpg            | 7B15 front panel
File:Tek 7b15.JPG
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]]
[[Category:Specifications needed]]
[[Category:Image needed]]

Latest revision as of 09:10, 19 August 2024

Tektronix 7B15
1 GHz delaying timebase
7B15

Compatible with 7000-series scopes

Produced from 1978 to 1990

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

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 provides digital readout of delay and delta times. In effect, the 7B15/7B10 pair are speed-improved versions of the 7B85/7B80.

Key Specifications

Sweep 200 ms/Div to 2 ns/Div in 1−2−5 sequence, ×10 magnifier down to 200 ps/Div, variable to ×2.5
Triggering to 1 GHz
Jitter less than 30 ps at 1 GHz
Features
  • Digital read-out of delay and delta times
  • Variable Trigger Holdoff
  • HF Sync mode

Links

Documents Referencing 7B15

Document Class Title Authors Year Links
Technology Report October 1979.pdf Article Patent Received: 4,109,182 Simultaneous Delayed Sweep Display Oliver Dalton 1979
Tekscope 1979 V11 N1.pdf Article 1 GHz at 1 mV in a General Purpose Plug-in Oscilloscope Hans Springer 1979

Patents that may apply to 7B15

Page Title Inventors Filing date Grant date Links
Patent US 3562464A Cam actuated switch having movable and fixed contacts on circuit board Howard Vollum Willem H Verhoef Tony Sprando 1968-10-07 1971-02-09
Patent US 4013855A Modular pushbutton switch John E. Reichen Richard Neff Meyer Gary W. Reed 1975-03-17 1977-03-22
Patent US 4109182A Delayed sweep system for an oscilloscope Oliver Dalton 1976-03-10 1978-08-22

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 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

Year 1980 1985 1990
Catalog price $1,695 $2,695 $3,300
In 2023 Dollars $6,300 $7,700 $7,800

Pictures

Components

Some Parts Used in the 7B15

Part Part Number(s) Class Description Used in
151-1036-00 151-1036-00 Discrete component dual n-channel JFET 4701 7B15
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
155-0149-00 155-0149-00 Monolithic integrated circuit sweep control 7B10 7B15
155-0150-00 155-0150-00 Hybrid integrated circuit trigger detector 7904A 7104 7B10 7B15 7B92A SCD1000
155-0160-00 155-0160-00 Monolithic integrated circuit 1.5 GHz trigger amplifier and source select 7B10 7B15 067-0587-02 067-0587-10
155-0185-00 155-0185-00 Monolithic integrated circuit four-digit counter, latch and D/A converter/DVM 7B15 7B85 7B87