R7903

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Tektronix R7903
500 MHz non-storage mainframe
Tektronix R7903

Produced from 1974 to 1982

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix R7903 is a rackmount version of the 7903, a 3-slot 7904 that takes only one horizontal plug-in. Otherwise, aside from being rackmount shape, it the same as a 7904. The designers of the R7903 were Val Garuts, Thor Hallen, John McCormick, Les Larson, Bill DeVey, Bill Peek, Hans Springer, Joe Burger, Joel Swanno, and Ken Hawken.

Key Specifications

Bandwidth 500 MHz
Fastest calibrated sweep 500 ps/Div (with 7B92A, other time bases "uncalibrated for first 60 ns")
Acceleration voltage 24 kV

Links

Patents that may apply to R7903

Page Title Inventors Filing date Grant date Links
Patent US 3453403A Power selection device Eldon Hoffman 1966-08-18 1969-07-01

Internals

Early R7903 (SN B149999 and earlier) use the 670-2532-00 A11 horizontal amplifier board and have issues with horizontal aberrations for sweep rates of 1 ns/Div or faster. After discovery of the issue modification kits (040-0801-00) that replace the horizontal amplifier board were offered. For more information see the manual of the 067-0657-00 Normalized Ramp Generator that was use to investigate this issue.

Pictures

Components

Some Parts Used in the R7903

Part Part Number(s) Class Description Used in
154-0644-00 154-0644-00 154-0644-04 154-0644-05 154-0644-09 154-0893-05 CRT CRT with distributed deflection plates 7704A 7854 7904 7904A R7903
155-0009-00 155-0009-00 Monolithic integrated circuit horizontal lockout logic 7504 7514 7704 7704A R7704 7834 7844 7854 7904 R7903 7904A 7934 7104
155-0010-00 155-0010-00 Monolithic integrated circuit chop divider and blanking 7504 7514 7704 R7704 7704A 7834 7854 7904 R7903 7904A 7934 7104
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
155-0012-00 155-0012-00 Monolithic integrated circuit Z Axis Logic 485 7504 7514 7704 R7704 7704A 7834 7844 7854 7904 R7903 7904A R7912 7934 7912AD 7912HB 7104 R7103
155-0013-00 155-0013-00 155-0013-01 Monolithic integrated circuit horizontal chop and alt. binary 7504 7514 7704 R7704 7704A 7834 7854 7904 7904A R7903 7934 7104
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
155-0059-00 155-0059-00 Monolithic integrated circuit HF amplifier 7834 7844 7854 7904 R7903 R7912 7912AD
155-0060-00 155-0060-00 155-0060-01 Monolithic integrated circuit channel selector amplifier R7903 7904 R7912
155-0064-00 155-0064-00 Hybrid integrated circuit vertical output amplifier 7834 7854 7904 R7903 7912AD 485 PG502
155-0065-00 155-0065-00 155-0064-01 155-0125-00 Hybrid integrated circuit deflection amplifier 7844 7904 R7912 R7903
155-0067-02 155-0067-00 155-0067-02 155-0067-03 Monolithic integrated circuit SMPS controller 7704A 7834 7844 7854 7904 R7903 7904 7904A 7934 R7912 7912AD 7912HB 7934 7104 R7103 308 434 485 690 P7001
155-0078-00 155-0078-xx 155-0273-00 155-0274-00 Monolithic integrated circuit broadband amplifier 464 465 466 468 475 475A 475M 485 7834 7844 7854 7904 R7903 R7912 7912AD 7912HB 7104 7A16A 7A16P 7A24 7A26 7A42 067-0587-01 067-0680-00 AM503 PG502 PG508 DC510 DC5010 FG5010
155-0095-00 155-0095-00 155-0095-01 155-0095-03 Hybrid integrated circuit HF differential amplifier 7834 7844 7904 R7903 R7912 7912AD
203-0126-90 203-0126-90 Monolithic integrated circuit ft doubler amplifier R7903 7904 7844

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