7623: Difference between revisions
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Project Engineer for the [[7613]] and 7623 was [[Bill DeVey]] under direction of [[Oliver Dalton]]. | Project Engineer for the [[7613]] and 7623 was [[Bill DeVey]] under direction of [[Oliver Dalton]]. | ||
[[John Durecka]] did the electrical design. [[Doug Giesbers]], [[Ed Wolf]], and [[Chuck Davis]] provided the mechanical design. | [[John Durecka]] did the electrical design. [[Doug Giesbers]], [[Ed Wolf]], and [[Chuck Davis]] provided the mechanical design. | ||
The [[T7410|CRT for the 7623]] was developed by [[Gary Siewell]], [[Chris Curtin]], and [[Wes Hayward]]. | |||
Aiding the overall design effort were [[Dave McCullough]] and [[Dick Anderson]]. | Aiding the overall design effort were [[Dave McCullough]] and [[Dick Anderson]]. | ||
Revision as of 07:57, 29 June 2024
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 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.
Project Engineer for the 7613 and 7623 was Bill DeVey under direction of Oliver Dalton. John Durecka did the electrical design. Doug Giesbers, Ed Wolf, and Chuck Davis provided the mechanical design. The CRT for the 7623 was developed by Gary Siewell, Chris Curtin, and Wes Hayward. Aiding the overall design effort were Dave McCullough and Dick Anderson.
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 W (R-version 180 W) |
| Options |
|
| — 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) |
Links
- 7623A @ amplifier.cd
- Tek 7623A @ barrytech.com / Tek 7623B @ barrytech.com
- Tek 7623 @ radiomuseum.org
Documents Referencing 7623
| Document | Class | Title | Authors | Year | Links |
|---|---|---|---|---|---|
| Tekscope 1972 V4 N4 Jul 1972.pdf | Article | Three Kinds of Storage | 1972 | 7313 • 7613 • 7623 • T7411 | |
| 7000 series brochure March 1973.pdf | Brochure | 7000 series brochure, March 1973 | 1973 | 7A11 • 7A12 • 7A13 • 7A14 • 7A15A • 7A16A • 7A17 • 7A18 • 7A19 • 7A21N • 7A22 • 7B50 • 7B53A • 7B70 • 7B71 • 7B92 • 7CT1N • 7D11 • 7D13 • 7D14 • 7D15 • 7M11 • 7L12 • 7S11 • 7S12 • 7T11 • 7704A • R7704 • 7904 • R7903 • 7603 • R7603 • 7403N • R7403N • 7313 • R7313 • 7613 • R7613 • 7623 • R7623 • P7001 | |
| Tekscope 1975 V7 N3.pdf | Article | Storage Expands Your Oscilloscope Measurement Capabilities | Dave McCullough | 1975 | 7514 • 7313 • 7613 • 7623 • 7633 |
| Tekscope 1976 V8 N3.pdf | Article | Clearing Up the 7623 Storage Picture | 1976 | 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-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.
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 |
| In 2023 Dollars | $19,700 | $18,700 | $18,900 | $16,000 | $18,600 | $20,900 | $27,800 |
Pictures
7623
-
7623
-
left side, X and Y output amplifiers
-
right side, storage logic board
7623A
-
7623A
-
7623A
-
7623A trace
-
7623A rear connections
-
7623A right internal
-
Sideview of mounting bracket
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Left-hand_mounting bracket
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Close-up of left-hand mounting bracket
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Front view with front cover in place
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Front-cover with partition open
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Front-cover with partition closed
7623B
-
7623B
Components
Some Parts Used in the 7623
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 155-0011-00 | 155-0011-00 | Monolithic integrated circuit | clock and chop blanking | 485 • 7313 • 7403N • R7403N • 7503 • 7504 • 7514 • 7603 • AN/USM-281C • 7613 • 7623 • 7623A • 7633 • 7704 • R7704 • 7704A • 7834 • 7844 • 7854 • 7904 • 7904A • R7903 • R7912 • 7912AD • 7912HB • 7934 • 7104 • R7103 • AN/USM-281C |
| 155-0022-00 | 155-0022-00 • 155-0022-01 | Monolithic integrated circuit | analog multiplexer | 147 • 148 • 149 • 335 • 468 • 1430 • 1441 • 1461 • 1900 • 1910 • 2220 • 2221 • 2230 • 5223 • 5403 • 5440 • 5441 • 5443 • 5444 • 5A38 • 7313 • 7403N • 7503 • 7504 • 7514 • 7603 • AN/USM-281C • 7613 • 7623 • 7623A • 7633 • 7704 • R7704 • 7704A • 7834 • 7844 • 7854 • R7912 • 7912AD • 7912HB • 7904 • R7903 • 7904A • 7934 • 7A12 • 7A18 • 7A18A • 7A18N • 7B52 • 7B53N • 7D10 • 7D11 • 7D12 • NT-7000 • P7001 |
| 155-0080-00 | 155-0080-00 | Hybrid integrated circuit | vertical output amplifier | 7603 • R7603 • 7613 • R7613 • 7623 • AN/USM-281C |
| 2N3055 | 151-0140-00 | Discrete component | general-purpose silicon NPN power transistor | TM504 • TM506 • TM5006 • 7603 • 7613 • 7623 • 7623A • 7623B • 7633 |
| CA3046 | 156-0048-00 | Monolithic integrated circuit | transistor array | 4601 • 7104 • 7403N • 7503 • 7B53A • 7D12 • DM502 • FG504 • S-52 • Telequipment D34 • 7603 • 7613 • 7623 • 7633 • FG507 • Keithley 227 |
| T7410 | 154-0659-00 | CRT | transfer storage CRT | 7623 • R7623 |
Some Parts Used in the 7623A
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 155-0011-00 | 155-0011-00 | Monolithic integrated circuit | clock and chop blanking | 485 • 7313 • 7403N • R7403N • 7503 • 7504 • 7514 • 7603 • AN/USM-281C • 7613 • 7623 • 7623A • 7633 • 7704 • R7704 • 7704A • 7834 • 7844 • 7854 • 7904 • 7904A • R7903 • R7912 • 7912AD • 7912HB • 7934 • 7104 • R7103 • AN/USM-281C |
| 155-0022-00 | 155-0022-00 • 155-0022-01 | Monolithic integrated circuit | analog multiplexer | 147 • 148 • 149 • 335 • 468 • 1430 • 1441 • 1461 • 1900 • 1910 • 2220 • 2221 • 2230 • 5223 • 5403 • 5440 • 5441 • 5443 • 5444 • 5A38 • 7313 • 7403N • 7503 • 7504 • 7514 • 7603 • AN/USM-281C • 7613 • 7623 • 7623A • 7633 • 7704 • R7704 • 7704A • 7834 • 7844 • 7854 • R7912 • 7912AD • 7912HB • 7904 • R7903 • 7904A • 7934 • 7A12 • 7A18 • 7A18A • 7A18N • 7B52 • 7B53N • 7D10 • 7D11 • 7D12 • NT-7000 • P7001 |
| 2N3055 | 151-0140-00 | Discrete component | general-purpose silicon NPN power transistor | TM504 • TM506 • TM5006 • 7603 • 7613 • 7623 • 7623A • 7623B • 7633 |
| T7411 | 154-0723-00 | CRT | transfer storage CRT | 7623A • R7623A |
Some Parts Used in the 7623B
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 2N3055 | 151-0140-00 | Discrete component | general-purpose silicon NPN power transistor | TM504 • TM506 • TM5006 • 7603 • 7613 • 7623 • 7623A • 7623B • 7633 |