7623
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 was 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. 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 | 170/180 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) |
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
- Three kinds of Storage, in Tekscope, July 1972 or @ radiomuseum.org
- 7623A @ amplifier.cd
- Tek 7623A @ barrytech.com / Tek 7623B @ barrytech.com
- Tek 7623 @ radiomuseum.org
- Catalog page with specs
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
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7623
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7623A
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7623A
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7623A trace
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7623A rear connections
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7623A right internal
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7623B
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left side, X and Y output amplifiers
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right side, storage logic board
CRTs used in the 7623
| Page | Part nos | Description | Designers | Used in |
|---|---|---|---|---|
| T7410 | 154-0659-00 | transfer storage CRT | Chris Curtin • Gary Siewell • Wes Hayward | 7623 • R7623 |
Custom ICs used in the 7623
| Page | Model | Part nos | Description | Designers | Used in |
|---|---|---|---|---|---|
| 155-0011-00 | M012 | 155-0011-00 | clock and chop blanking | Les Larson | 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 | M036 | 155-0022-00 • 155-0022-01 | analog multiplexer | Gene Andrews | 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 | M125 | 155-0080-00 | vertical output amplifier | 7603 • R7603 • 7613 • R7613 • 7623 • AN/USM-281C |
CRTs used in the 7623A
| Page | Part nos | Description | Designers | Used in |
|---|---|---|---|---|
| T7411 | 154-0723-00 | transfer storage CRT | Chris Curtin • Gary Siewell • Wes Hayward | 7623A • R7623A |
Custom ICs used in the 7623A
| Page | Model | Part nos | Description | Designers | Used in |
|---|---|---|---|---|---|
| 155-0011-00 | M012 | 155-0011-00 | clock and chop blanking | Les Larson | 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 | M036 | 155-0022-00 • 155-0022-01 | analog multiplexer | Gene Andrews | 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 |