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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.
|— 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)|
|— 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 —|
|Stored writing speed||1000 cm/μs (in reduced-scan mode)|
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.
- 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