7504: Difference between revisions

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The '''Tektronix 7504''' is a 90 MHz 7000-series mainframe, one of the initial oscilloscopes introducing the [[Introduction_to_the_7000-Series|7000-Line]] [[introduced in 1969|in 1969]].
The '''Tektronix 7504''' is a 90 MHz 7000-series mainframe, one of the initial oscilloscopes introducing the [[Introduction_to_the_7000-Series|7000-Line]] [[introduced in 1969|in 1969]].
It is very lavishly built, using contacts embedded in the aluminium frame for interconnecting the gold plated circuit boards. It also features the [[7000-series remote control connector]] on the rear panel.


It can take two [[7000-series_plug-ins#Vertical plug-ins|7000-series vertical plug-ins]] and two [[7000-series_plug-ins#Horizontal plug-ins|7000-series horizontal plug-ins]]., and was in production for about one year.
It can take two [[7000-series_plug-ins#Vertical plug-ins|7000-series vertical plug-ins]] and two [[7000-series_plug-ins#Horizontal plug-ins|7000-series horizontal plug-ins]]., and was in production for about one year.
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{{Spec | Bandwidth | 90 MHz}}
{{Spec | Bandwidth | 90 MHz}}
{{Spec | Fastest calibrated sweep | 5 ns/Div }}
{{Spec | Fastest calibrated sweep | 5 ns/Div }}
{{Spec | Calibrator| DC and 1 kHz rectangle, 4 mV to 40 V in 5 steps, 40 mA current loop }}
{{Spec | Calibrator | DC, square wave (1 kHz or 1/2 B Sweep gate), 4 mV to 40 V in decade steps (2/20/200/400 mV into 50 Ω); 40 mA current loop }}
{{Spec | Vertical modes | Left / Alt / Add / Chop / Right }}
{{Spec | Horizontal modes | A / Alt / Chop / B }}
{{Spec | Trigger Source | Left / Vert Mode / Right }}
{{Spec | Inputs |
* Z Axis High Speed (60 V<sub>p-p</sub>, DC−75 MHz)
* Z Axis High Sensitivity (2 V<sub>p-p</sub>, DC−2 MHz; 0.4 V<sub>p-p</sub> @ 10 MHz)
}}
{{Spec | Outputs |
* Vertical Signal Out (25 mV/Div into 50 Ω, 0.5 V/Div into 1 MΩ)
* +Sawtooth
* +Gate
* camera power
* probe power
}}
{{Spec | CRT | 8x10 Div @ 1 cm/Div internal gradicule, [[154-0608-00]] with P31 [[phosphor]] 18 kV acceleration (+15/-2.96) }}
{{Spec | Options |  
{{Spec | Options |  
* Opt.01 – without readout
* Opt.01 – without readout
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* Opt.03 – EMI shielding
* Opt.03 – EMI shielding
}}
}}
{{Spec | Power consumption| 285 W max. }}
{{Spec | Power | 90−136 V or 180−272 V, 48−440 Hz, 280 W max. }}
{{Spec | Weight| 24.6 kg (54 lb) }}
{{Spec | Weight| 24.6 kg (54 lb) }}
{{Spec | Size |
: 34.2 cm × 30.5 cm × 55.1 cm (H×W×L)
: (13.5 in x 12.0 in x 21.7 in)
}}
{{EndSpecs}}
{{EndSpecs}}
''please expand''


==Internals==
==Internals==
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It is equipped with a [[7000-series remote control connector|rear remote control connector]] similar to the [[7904]] but lacking the remote readout features, and two [[probe power]] connectors.
It is equipped with a [[7000-series remote control connector|rear remote control connector]] similar to the [[7904]] but lacking the remote readout features, and two [[probe power]] connectors.
Logic, channel switching, and [[7000_series_readout_system|readout]] use the classic TEK 7000 series custom ICs ([[155-0009-00]] to [[155-0022-00]]), the vertical amplifier (also designed by Andrews) and the horizontal amplifier are completely discrete. 
The 7504 does not implement the [[7000 Series plug-in interface|Aux Y input (B16)]], therefore the Trace Separation control on a [[7B92]]/[[7B92A]] will have no effect.


The 7504 contains a mercury-based [[elapsed time meter]] on the low voltage regulator board.
The 7504 contains a mercury-based [[elapsed time meter]] on the low voltage regulator board.

Revision as of 19:42, 21 December 2023

Tektronix 7504
90 MHz non-storage mainframe
Tektronix 7504

Produced from 1969 to 1971

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

The Tektronix 7504 is a 90 MHz 7000-series mainframe, one of the initial oscilloscopes introducing the 7000-Line in 1969.

It is very lavishly built, using contacts embedded in the aluminium frame for interconnecting the gold plated circuit boards. It also features the 7000-series remote control connector on the rear panel.

It can take two 7000-series vertical plug-ins and two 7000-series horizontal plug-ins., and was in production for about one year.

Key Specifications

Bandwidth 90 MHz
Fastest calibrated sweep 5 ns/Div
Calibrator DC, square wave (1 kHz or 1/2 B Sweep gate), 4 mV to 40 V in decade steps (2/20/200/400 mV into 50 Ω); 40 mA current loop
Vertical modes Left / Alt / Add / Chop / Right
Horizontal modes A / Alt / Chop / B
Trigger Source Left / Vert Mode / Right
Inputs
  • Z Axis High Speed (60 Vp-p, DC−75 MHz)
  • Z Axis High Sensitivity (2 Vp-p, DC−2 MHz; 0.4 Vp-p @ 10 MHz)
Outputs
  • Vertical Signal Out (25 mV/Div into 50 Ω, 0.5 V/Div into 1 MΩ)
  • +Sawtooth
  • +Gate
  • camera power
  • probe power
CRT 8x10 Div @ 1 cm/Div internal gradicule, 154-0608-00 with P31 phosphor 18 kV acceleration (+15/-2.96)
Options
  • Opt.01 – without readout
  • Opt.02 – X-Y compensation network
  • Opt.03 – EMI shielding
Power 90−136 V or 180−272 V, 48−440 Hz, 280 W max.
Weight 24.6 kg (54 lb)
Size
34.2 cm × 30.5 cm × 55.1 cm (H×W×L)
(13.5 in x 12.0 in x 21.7 in)

Internals

Like other 75xx and 76xx mainframes, the 7504 has a linear power supply, as opposed to the switchmode supplies used in the later 4-slot mainframes.

It is equipped with a rear remote control connector similar to the 7904 but lacking the remote readout features, and two probe power connectors.

Logic, channel switching, and readout use the classic TEK 7000 series custom ICs (155-0009-00 to 155-0022-00), the vertical amplifier (also designed by Andrews) and the horizontal amplifier are completely discrete.

The 7504 does not implement the Aux Y input (B16), therefore the Trace Separation control on a 7B92/7B92A will have no effect.

The 7504 contains a mercury-based elapsed time meter on the low voltage regulator board.

Links

Documents Referencing 7504

Document Class Title Authors Year Links
Tekscope 1969 V1 N5 Oct 1969.pdf Article Introducing the New Generation 1969 7000-series scopes • 7504 • 7704 • 7A11 • 7A12 • 7A13 • 7A14 • 7A16 • 7A22 • 7S11 • 7M11 • 7B50 • 7B51 • 7B70 • 7B71 • 7T11 • R5030 • 7000 series readout system • Miniature relays • Cam switches • Industrial Design • T7500 • T7700 • P6052 • P6053 • C-50 • C-51 • 204-2
Tekscope 1969 V1 N6 Dec 1969.pdf Article A New Logic for Oscilloscope Displays 1969 7000-series scopes • 7A11 • 7A12 • 7A13 • 7A14 • 7A16 • 7A22 • 7B50 • 7B51 • 7B70 • 7B71 • 7S11 • 7T11 • 7504 • 7704
Tekscope 1970 V2 N3 Jun 1970.pdf Article The 7000-Series Oscilloscopes as Signal Sources 1970 7704 • 7504 • 7503

Pictures

Components

Some Parts Used in the 7504

Part Part Number(s) Class Description Used in
120-0626-00 120-0626-00 Discrete component power transformer 7504
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
2N3739 151-0201-00 Discrete component Silicon NPN power transistor 013-002 • 106 • 4501 • 561B • R561B • 564B • R564B • 568 • 7503 • 7504
T7500 154-0608-00 CRT CRT 7503 • 7504


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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