R7903: Difference between revisions

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|designers=Val Garuts;Thor Hallen;John McCormick;Les Larson;Bill DeVey;Bill Peek;Hans Springer;Joe Burger;Joel Swanno;Ken Hawken
|designers=Val Garuts;Thor Hallen;John McCormick;Les Larson;Bill DeVey;Bill Peek;Hans Springer;Joe Burger;Joel Swanno;Ken Hawken
|manuals=
|manuals=
* [[Media:070-1462-00.pdf|R7903 Operator Manual]] (PDF)
* [[Media:070-1462-00.pdf|R7903 Operator Manual]]
* [[Media:070-1464-00.pdf|R7903 Service Manual]] (PDF)
* [[Media:070-1464-00.pdf|R7903 Service Manual]]
}}
}}
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 '''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.
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</gallery>
</gallery>


{{CRTs|R7903}}
==Components==
{{Custom ICs|R7903}}
{{Parts|R7903}}
{{Custom ICs|7000 series readout system}}
{{Custom ICs|7000 series readout system}}




[[Category:7000 series non-storage mainframes]]
[[Category:7000 series non-storage mainframes]]

Revision as of 12:55, 6 October 2023

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.

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

Internals

Early R7903 (SN B159999 and earlier) 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 were offered. For more information see the manual of the 067-0657-00 Normalized Ramp Generator that was use to investigate this issue.


Pictures

  • Option 4: brighter, smaller scan CRT

    Option 4: brighter, smaller scan CRT

  • Option 4: brighter, smaller scan CRT

    Option 4: brighter, smaller scan CRT

  • R7903 rear

    R7903 rear

  • R7903 Option 4 trace

    R7903 Option 4 trace

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
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