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{{Oscilloscope Sidebar|
{{Oscilloscope Sidebar
title=Tektronix 7623|
|manufacturer=Tektronix
image=7623B.jpg|
|series=7000-series scopes
caption=Tektronix 7623B, front view|
|model=7623
introduced=1973 |
|summary=100 MHz multi-mode storage scope
discontinued=1990|
|image=Tek-7623A.jpg
summary=60 MHz variable-persistence storage scope|
|caption=Tektronix 7623A, front view
manuals=
|introduced=1972
* [http://bama.edebris.com/download/tek/7623/tek-7623.pdf Tektronix 7623 Manual (PDF)]
|discontinued=1992
* [http://bama.edebris.com/download/tek/7623a/Tektronix_7623A_Service_1974.pdf Tektronix 7623A Manual (PDF)]
|designers=Bill DeVey;John Durecka;Doug Giesbers;Ed Wolf;Chuck Davis;Dave McCullough;Dick Anderson
* [http://w140.com/tek_7623a_military.pdf Tektronix 7623A Military Service Manual (PDF)]
|manuals=
'''7623'''
* [[Media:070-1366-00.pdf|Tektronix 7623 Service Manual]] (OCR)
 
'''7623A'''
* [[Media:070-1685-00.pdf|Tektronix 7623A Service Manual]] (OCR)
* [[Media:070-1684-00.pdf|Tektronix 7623A Operators Manual]] (OCR)
 
'''7623A'''
* Needed: 7623A Tektronix 7623A Service Manual, Revised 1984, please add
 
'''7623B'''
* Manuals needed, ''please add''
 
<small>
'''Alternate copies'''
* [http://bama.edebris.com/download/tek/7623/tek-7623.pdf Tektronix 7623 Service Manual]
* [http://bama.edebris.com/download/tek/7623a/Tektronix_7623A_Service_1974.pdf Tektronix 7623A Service Manual] (1974)
* [https://w140.com/tek_7623a_military.pdf Tektronix 7623A Military Service Manual]
</small>
 
N.B. For more info on the Low-Voltage Power Supply, see Manuals in the 7603 section.
 
<small>
'''Modifications'''
* [[Media:050-0876-10.pdf | M30179 050-0876-10 (1984): CRT Replacement]]
* [http://hakanh.com/dl/docs/kitinstructions/050-0876-10.pdf M30179 050-0876-10 (1977): CRT replacement]
* [[040-0686-01 | 7xx3 pushbutton illumination mod]]
</small>
}}
}}
The '''Tektronix 7623''' is a 100 MHz analog multi-mode storage mainframe, introduced in 1972.<br />
The '''7623A''' facelift in 1975 increased standard writing speed to 150 div/µs (from 100 div/µs for a 7623 without option 12).
Front panel controls were changed in the 7623A, too. <br />
The '''7623B''' version replaced the [[7613]], 7623A and [[7633]] in 1991. 
It added a reduced scan mode to increase stored writing speed and is essentially a re-named [[7633]].
It was produced until the entire 7000 series was discontinued in 1992.
There were also '''R7623'''(A,B) rack-mount versions.


The '''Tektronix 7623''' is a 60 MHz [[CRT storage scope]]. Storage is made directly in the CRT storage tube.  
Project Engineer for the [[7613]] and 7623 was [[Bill DeVey]] under direction of [[Oliver Dalton]].  
There is also a (later) [[7623B]] version.
[[John Durecka]] did the electrical design. [[Doug Giesbers]], [[Ed Wolf]], and [[Chuck Davis]] provided the mechanical design.  
Aiding the overall design effort were [[Dave McCullough]] and [[Dick Anderson]].  


==Specifications==
{{BeginSpecs}}
{{SpecGroup | Common}}
{{Spec | Fastest cal. sweep | 5 ns/Div }}
{{Spec | Bandwidth | 100 MHz with [[7A11]], [[7A16]], [[7A17]] and similar amplifiers; 75 MHz with [[7A13]], [[7A18]]}}
{{Spec | Calibrator | 40 mV, 400 mV or 4V into 1 MΩ, 1 kHz}}
{{Spec | Storage modes | variable persistence, fast variable persistence, bistable, fast bistable, non-store }}
{{Spec | Weight | 13.6 kg (30 lb) }}
{{Spec | Power | 170 W (R-version 180 W) }}
{{Spec | Options |
* Option 01 - No Readout
* Option 03 - EMI modification
* Option 05 - Line frequency change (50-400 Hz), only for R7623
* Option 07 - No signals out board
* Option 08 - Protective panel cover
* Option 12 - Fast Writing CRT (200 cm/µs, 220 Div/µs)}}
{{SpecGroup | 7623 }}
{{Spec | Stored writing speed | fast var persist - 100 Div/μs, var persist - 0.5 Div/μs, bistable - 0.03 Div/μs}}
{{Spec | CRT | [[T7410]] ([[154-0659-00]]), 8 x 10 Div. @ 0.9 cm, P31 phosphor, 8.5 (+7/-1.5) kV acceleration }}
{{SpecGroup | 7623A }}
{{Spec | Stored writing speed | fast var persist - 150 Div/μs, fast bistable - 50 Div/μs, var persist - 0.5 Div/μs, bistable - 0.03 Div/μs}}
{{Spec | CRT | [[T7411]] ([[154-0723-00]]), 8 x 10 Div. @ 0.9 cm, P31 phosphor, 8.5 (+7/-1.5) kV acceleration }}
{{SpecGroup | 7623B }}
{{Spec | Bandwidth | tba }}
{{Spec | Stored writing speed | 1000 cm/μs  (in reduced-scan mode) }}
{{EndSpecs}}


==Links==
==Links==
* http://www.barrytech.com/tektronix/tek7000/tek7623a.html
* [https://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_mainframe/7623A/7623A.html 7623A @ amplifier.cd]
* [http://www.barrytech.com/tektronix/tek7000/tek7623a.html Tek 7623A @ barrytech.com] / [http://www.barrytech.com/tektronix/tek7000/tek7623b.html Tek 7623B @ barrytech.com]
* [https://www.radiomuseum.org/r/tektronix_transfer_storage_oscilloscope_7623.html Tek 7623 @ radiomuseum.org]
{{Documents|Link=7623}}
 
==Internals==
The 7623 uses a [[Transfer storage CRT]] which includes an internal, fast-responding storage mesh.  In fast mode, the time base is inhibited after a sweep, and the transfer cycle is started. Individual sweeps therefore occur in about one-second intervals.
 
The vertical output amplifier is built around a [[155-0080-00]] hybrid in the non-A version.  The 7623A vertical amplifier is a discrete design with [[bridged T-coil]]s.
Other custom Tek ICs used in the 7623 include [[155-0011-00]] clock & chop blanking, [[155-0022-00]] channel switch, and the [[7000 series readout system]] chips.
 
The 7623, like the other 76xx models, has a linear supply which does not provide [[7000 Series plug-in interface|+5 V for lights (A9)]] without [[Media:040-0686-01.pdf | modification]].
 
==Prices==
{| class="wikitable"
|-
! Year
! 1973
! 1974
! 1976
! 1980
! 1984
! 1990
! 1991
|-
! Model
|align=center| 7623
|align=center| 7623A
|align=center| 7623A
|align=center| 7623A
|align=center| 7623A
|align=center| 7623A
|align=center| 7623B
|-
! Catalog price
|align=right|  $2,850
|align=right|  $3,000
|align=right|  $3,500
|align=right|  $4,295
|align=right|  $6,310
|align=right|  $8,900
|align=right| $12,350
|-
! In 2023 Dollars
|align=right| $19,700
|align=right| $18,700
|align=right| $18,900
|align=right| $16,000
|align=right| $18,600
|align=right| $20,900
|align=right| $27,800
|-
|}


==Pictures==
==Pictures==


<gallery>
<gallery>
File:Tek-7623A.jpg|7623A
Tek 7623 Faceplate.jpg|7623
File:7623B.jpg|7623B
Tek-7623A.jpg|7623A
USA Tektronix 7623A FrontRAW.jpg | 7623A
Tek 7623a trace.jpg  | 7623A trace
Tek 7623a rear.jpg  | 7623A rear connections
USA Tektronix 7623A Right1.jpg | 7623A right internal
7623B.jpg | 7623B
7623-left.jpg | left side, X and Y output amplifiers
7623-right.jpg | right side, storage logic board
7623A-6_Side_view_of_mounting_bracket-large.JPG | Sideview of mounting bracket
7623A-5_Left-hand_mounting_bracket-large.JPG | Left-hand_mounting bracket
7623A-1_Close-up_of_left-hand_mounting_bracket-large.JPG | Close-up of left-hand mounting bracket
7623A-4_Front_view_with_front_cover_in_place-large.JPG | Front view with front cover in place
7623A-3_Front_cover_with_partition_open-large.JPG | Front-cover with partition open
7623A-2_Front_cover_with_partition_closed-large.JPG | Front-cover with partition closed
</gallery>
</gallery>


==Components==
{{Parts|7623}}


[[Category:7000 series storage mainframes]]
{{Parts|7623A}}
[[Category:Specifications needed]]
 
{{Parts|7623B}}


{{Custom ICs|7000 series readout system}}


__NOTOC__
[[Category:7000 series storage mainframes]]
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