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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.
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 was essentially a re-named [[7633]].  
 
There were also '''R7623'''(A,B) rack-mount versions.


Project Engineer for the 7613 and 7623 was [[Bill DeVey]].
Project Engineer for the 7613 and 7623 was [[Bill DeVey]].

Revision as of 05:50, 17 November 2021

Tektronix 7623
100 MHz multi-mode storage scope
Tektronix 7623A, front view

Produced from 1972 to 1992

Manuals
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 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.

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

  • 7623

    7623

  • 7623A

    7623A

  • 7623A

    7623A

  • 7623A trace

    7623A trace

  • 7623A rear connections

    7623A rear connections

  • 7623A right internal

    7623A right internal

  • 7623B

    7623B

  • left side, X and Y output amplifiers

    left side, X and Y output amplifiers

  • right side, storage logic board

    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

Custom ICs used in the 7000 series readout system

Page Model Part nos Description Designers Used in
155-0014-01 M019D 155-0014-00 • 155-0014-01 analog-to-decimal converter Barrie Gilbert 7000 series readout system • 7854 • 7934 • 7J20 • 7L5 • P7001
155-0015-01 M020F 155-0015-00 • 155-0015-01 analog data switch Barrie Gilbert 7000 series readout system • 7854 • 7934
155-0017-00 M025 155-0017-00 5 MHz decade counter Barrie Gilbert 7000 series readout system • 7854 • 7934
155-0018-00 M026 155-0018-00 zeros logic control Les Larson 7000 series readout system • 7934
155-0019-00 M027 155-0019-00 decimal point and spacing control Les Larson 7000 series readout system
155-0020-00 M028 155-0020-00 output assembler Les Larson 7000 series readout system
155-0021-00 M029C 155-0021-00 • 155-0021-01 timing generator Les Larson 7000 series readout system • 7854 • 7934
155-0023-00 M160 155-0023-00 character generator (0 1 2 3 4 5 6 7 8 9) Barrie Gilbert 7000 series readout system
155-0024-00 M161 155-0024-00 character generator (↓ < I / + - + C Δ >) Barrie Gilbert 7000 series readout system
155-0025-00 M162 155-0025-00 character generator (m μ n p X K M G T R) Barrie Gilbert 7000 series readout system
155-0026-00 M163 155-0026-00 character generator (S V A W H d B c Ω E) Barrie Gilbert 7000 series readout system
155-0027-00 M164 155-0027-00 character generator (U N L Z Y P F J Q D) Barrie Gilbert 7000 series readout system
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