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[[Image:7623B.jpg|200px|thumb|right|7623B]]
{{Oscilloscope Sidebar|
The 7623 is a 60MHz [[CRT storage scope]]. Storage is made directly in the CRT storage tube.  
title=Tektronix 7623|
There is also a (later) [[7623B]] version.
image=Tek-7623A.jpg|
caption=Tektronix 7623A, front view|
introduced=1972 |
discontinued=1992 |
summary=100 MHz multi-mode storage scope|
manuals=
* [http://bama.edebris.com/download/tek/7623/tek-7623.pdf Tektronix 7623 Service Manual (PDF)]
* [http://bama.edebris.com/download/tek/7623a/Tektronix_7623A_Service_1974.pdf Tektronix 7623A Service Manual (PDF)]
* [[Media:070-1685-00.pdf|Tektronix 7623A Service Manual (PDF, OCR, 30MB)]]
* [[Media:070-1684-00.pdf|Tektronix 7623A Operators Manual (PDF, OCR)]]
* [http://w140.com/tek_7623a_military.pdf Tektronix 7623A Military Service Manual (PDF)]
* B model manuals needed [[Category:Manual needed]]
<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. The '''7623B''' version, specified at 100 MHz, added a reduced scan mode to increase stored writing speed (essentially it was a re-named [[7633]]). It replaced the [[7613]], 7623A and [[7633]] in 1991.  There were also '''R7623'''(A,B) rack-mount versions.


==Years made==
Project Engineer for the 7613 and 7623 was [[Bill DeVey]].
1970 — 1990


==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 | 170/180 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}}


==Manuals==
==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.


* [http://bama.edebris.com/download/tek/7623/tek-7623.pdf Tektronix 7623 Manual (PDF)]
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.
* [http://bama.edebris.com/download/tek/7623a/Tektronix_7623A_Service_1974.pdf Tektronix 7623A Manual (PDF)]
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.
* [http://w140.com/tek_7623a_military.pdf Tektronix 7623A Military Service Manual (PDF)]
 
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]].


==Links==
==Links==
* ''Three kinds of Storage'', in [[Media:Tekscope 1972 V4 N4 Jul 1972.pdf | Tekscope, July 1972]] or [http://www.radiomuseum.org/forum/tektronix_three_kinds_of_storage.html @ radiomuseum.org]
* [http://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]
* [http://www.radiomuseum.org/r/tektronix_transfer_storage_oscilloscope_7623.html Tek 7623 @ radiomuseum.org]
* [http://www.teknetelectronics.com/DataSheet/TEKTRONIX/TEKTR_760381630.pdf Catalog page with specs]
==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
|-
! 2015 value
|align=right| $15,070
|align=right| $14,280
|align=right| $14,440
|align=right| $12,230
|align=right| $14,260
|align=right| $15,980
|align=right| $21,280
|-
|}


==Pictures==
==Pictures==


<gallery>
<gallery>
Image:7623B.jpg|7623B
Tek 7623 Faceplate.jpg|7623
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
</gallery>
</gallery>


[[Category:Specifications needed]]




__NOTOC__
[[Category:7000 series storage mainframes]]

Revision as of 12:19, 29 July 2021

Manuals – Specifications – Links – Pictures

The Tektronix 7623 is a 100 MHz analog multi-mode storage mainframe, introduced in 1972.
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. The 7623B version, specified at 100 MHz, added a reduced scan mode to increase stored writing speed (essentially it was a re-named 7633). It replaced the 7613, 7623A and 7633 in 1991. There were also R7623(A,B) rack-mount versions.

Project Engineer for the 7613 and 7623 was Bill DeVey.

Key Specifications

     — Common
Fastest cal. sweep 5 ns/Div
Bandwidth 100 MHz with 7A11, 7A16, 7A17 and similar amplifiers; 75 MHz with 7A13, 7A18
Calibrator 40 mV, 400 mV or 4V into 1 MΩ, 1 kHz
Storage modes variable persistence, fast variable persistence, bistable, fast bistable, non-store
Weight 13.6 kg (30 lb)
Power 170/180 W
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)
     — 7623
Stored writing speed fast var persist - 100 Div/μs, var persist - 0.5 Div/μs, bistable - 0.03 Div/μs
CRT T7410 (154-0659-00), 8 x 10 Div. @ 0.9 cm, P31 phosphor, 8.5 (+7/-1.5) kV acceleration
     — 7623A
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
CRT T7411 (154-0723-00), 8 x 10 Div. @ 0.9 cm, P31 phosphor, 8.5 (+7/-1.5) kV acceleration
     — 7623B
Bandwidth tba
Stored writing speed 1000 cm/μs (in reduced-scan mode)

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-coils. 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 +5 V for lights (A9) without modification.

Links

Prices

Year 1973 1974 1976 1980 1984 1990 1991
Model 7623 7623A 7623A 7623A 7623A 7623A 7623B
Catalog price $2,850 $3,000 $3,500 $4,295 $6,310 $8,900 $12,350
2015 value $15,070 $14,280 $14,440 $12,230 $14,260 $15,980 $21,280

Pictures