7623

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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.

Project Engineer for the 7613 and 7623 was Bill DeVey.

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

Custom ICs used in the 7623

Page Class Manufacturer Model Part nos Description Designers Used in
155-0011-00 Monolithic integrated circuit Tektronix M012 155-0011-00 clock and chop blanking Les Larson 485 4851 4852 7313 7403N 7504 7514 7603 7613 7623 7633 7704 7704A 7834 7844 7854 7904 7904A R7903 7912AD 7912HB 7934 7104
155-0014-01 Monolithic integrated circuit Tektronix M019D 155-0014-01 A/D converter Barrie Gilbert 7000 series readout system 5403 5440 5441 5443 5444 7313 7504 7514 7603 7613 7623 7633 7704 7704A 7844 7904 R7903 7904A 7912 7J20 P7001
155-0015-01 Monolithic integrated circuit Tektronix M020F 155-0015-01 analog data switch Barrie Gilbert 7000 series readout system 7504 7313 7704 7503 7504 7514 7834 7844 R7903 7904 7912 R7103 7104 5403 5440 5443 5444 7603 7613 7623 7633 7854
155-0022-00 Monolithic integrated circuit Tektronix M036 155-0022-00 155-0022-01 analog multiplexer Gene Andrews 335 468 2220 2221 2230 7403 7503 7603 7613 7623 7623A 7633 7704 7704A 7834 7844 7854 7912AD 7912HB 7904 R7903 7904A 7934 7A12 7A18 7D12 NT-7000 P7001
155-0080-00 Hybrid integrated circuit Tektronix M125 155-0080-00 vertical output amplifier 7603 R7603 7613 R7613 7623

Custom ICs used in the 7623A

Page Class Manufacturer Model Part nos Description Designers Used in
155-0022-00 Monolithic integrated circuit Tektronix M036 155-0022-00 155-0022-01 analog multiplexer Gene Andrews 335 468 2220 2221 2230 7403 7503 7603 7613 7623 7623A 7633 7704 7704A 7834 7844 7854 7912AD 7912HB 7904 R7903 7904A 7934 7A12 7A18 7D12 NT-7000 P7001

Custom ICs used in the 7000 series readout system

Page Class Manufacturer Model Part nos Description Designers Used in
155-0014-01 Monolithic integrated circuit Tektronix M019D 155-0014-01 A/D converter Barrie Gilbert 7000 series readout system 5403 5440 5441 5443 5444 7313 7504 7514 7603 7613 7623 7633 7704 7704A 7844 7904 R7903 7904A 7912 7J20 P7001
155-0015-01 Monolithic integrated circuit Tektronix M020F 155-0015-01 analog data switch Barrie Gilbert 7000 series readout system 7504 7313 7704 7503 7504 7514 7834 7844 R7903 7904 7912 R7103 7104 5403 5440 5443 5444 7603 7613 7623 7633 7854
155-0017-00 Monolithic integrated circuit Tektronix M025 155-0017-00 5 MHz decade counter Barrie Gilbert 7000 series readout system
155-0018-00 Monolithic integrated circuit Tektronix M026 155-0018-00 zeros logic control Les Larson 7000 series readout system
155-0019-00 Monolithic integrated circuit Tektronix M027 155-0019-00 decimal point and spacing control Les Larson 7000 series readout system
155-0020-00 Monolithic integrated circuit Tektronix M028 155-0020-00 output assembler Les Larson 7000 series readout system
155-0021-00 Monolithic integrated circuit Tektronix M029C 155-0021-00 timing generator Les Larson 7000 series readout system
155-0023-00 Monolithic integrated circuit Tektronix 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 Monolithic integrated circuit Tektronix M161 155-0024-00 character generator (↓ < I / + - + C Δ >) Barrie Gilbert 7000 series readout system
155-0025-00 Monolithic integrated circuit Tektronix 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 Monolithic integrated circuit Tektronix 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 Monolithic integrated circuit Tektronix M164 155-0027-00 character generator (U N L Z Y P F J Q D) Barrie Gilbert 7000 series readout system