7B15: Difference between revisions

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{{Plugin Sidebar 2 |
{{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  
introduced=1978 |
|caption=7B15
discontinued=(?) |
|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 '''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 provides digital readout of delay and delta times.  In effect, the 7B15/[[7B10]] pair are speed-improved versions of the [[7B85]]/[[7B80]].
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}}
{{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 | 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 | Triggering | to 1 GHz }}
{{Spec | Jitter | less than 30 ps at 1 GHz }}
{{Spec | Jitter | less than 30 ps at 1 GHz }}
Line 26: Line 27:
}}
}}
{{EndSpecs}}
{{EndSpecs}}
''please add''
 
==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 2022 Dollars
|align=right| $5,900
|align=right| $7,200
|align=right| $7,300
|-
|}


==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>


{{Custom ICs|7B15}}


[[Category:7000 series horizontal plugins]]
[[Category:7000 series horizontal plugins]]
[[Category:Specifications needed]]
[[Category:Image needed]]

Revision as of 14:43, 22 April 2022

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 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

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 2022 Dollars $5,900 $7,200 $7,300

Pictures

Custom ICs used in the 7B15

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
155-0149-00 155-0149-00 155-0149-00 sweep control 7B10 7B15
155-0150-00 H473 155-0150-00 trigger detector Art Metz 7904A 7104 7B10 7B15 7B92A SCD1000
155-0160-00 M136 155-0160-00 1.5 GHz trigger amplifier and source select Art Metz 7B10 7B15 067-0587-02 067-0587-10
155-0185-00 M187 155-0185-00 four-digit Counter, latch and D/A converter/DVM Don Larson 7B15 7B85 7B87