7704: Difference between revisions
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manuals= | manuals= | ||
* [http://bama.edebris.com/download/tek/7704/tek-7704.pdf Tektronix 7704 Manual (PDF)] | * [http://bama.edebris.com/download/tek/7704/tek-7704.pdf Tektronix 7704 Manual (PDF)] | ||
* [[Media:Tekscope 1971 V3 N2.pdf|Tekscope Vol. 3 No. 2, Mar 1971: Servicing the 7704 switch-mode power supply]] | |||
* [[Media:Tekscope_1971_V3_N3_May_1971.pdf|Tekscope Vol. 3 No. 3, May 1971: Servicing the 7704 CRT circuit]] | |||
}} | }} | ||
The '''Tektronix 7704''' is a 150 MHz, four-bay mainframe | The '''Tektronix 7704''' is a 150 MHz, four-bay mainframe | ||
[[introduced in 1969|introduced in August 1969]] that can take | [[introduced in 1969|introduced in August 1969]] that can take | ||
two [[7000-series_plug-ins#Vertical plug-ins|7000-series vertical plug-ins]] | 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 two [[7000-series_plug-ins#Horizontal plug-ins|7000-series horizontal plug-ins]]. The 7704 is one of the initial oscilloscopes introducing the [[Introduction_to_the_7000-Series|7000-Line]] and very lavishly build using contacts embedded in the aluminium frame for interconnecting the gold plated PCB boards. | ||
It was superseded by the [[7704A]] in 1973. | It was superseded by the completely redesigned [[7704A]] in 1973. | ||
There is also a rack-mount version, the '''R7704'''. | There is also a rack-mount version, the '''R7704'''. | ||
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==Internals== | ==Internals== | ||
The 7704 uses an all-discrete switch-mode power supply (SMPS) in resonant half-bridge topology. | The 7704 uses an all-discrete switch-mode power supply (SMPS) in resonant half-bridge topology. | ||
The CRT voltages and heating are produced in a separate switching stage running off the main SMPS DC output. | The CRT voltages and heating are produced in a separate switching stage running off the main SMPS DC output. | ||
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 horizontal and vertical amplifiers are completely discrete. | |||
==Links== | ==Links== | ||
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==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
7704-front.jpg | 7704 front | 7704-front.jpg | 7704 front | ||
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7704 right2.jpg | Right side of 7704 contains readout circuitry | 7704 right2.jpg | Right side of 7704 contains readout circuitry | ||
</gallery> | </gallery> | ||
[[Category:7000 series non-storage mainframes]] | [[Category:7000 series non-storage mainframes]] | ||
Revision as of 15:05, 29 September 2020
The Tektronix 7704 is a 150 MHz, four-bay mainframe introduced in August 1969 that can take two 7000-series vertical plug-ins and two 7000-series horizontal plug-ins. The 7704 is one of the initial oscilloscopes introducing the 7000-Line and very lavishly build using contacts embedded in the aluminium frame for interconnecting the gold plated PCB boards. It was superseded by the completely redesigned 7704A in 1973. There is also a rack-mount version, the R7704.
Key Specifications
| Fastest cal. sweep | 2 ns/Div |
|---|---|
| Bandwidth | 150 MHz (with 7A11 or 7A16) |
| Calibrator | 4 mV to 40 V in decade steps, 2/20/200/400 mV into 50 Ω, 40 mA; 1 kHz |
| Outputs | Vertical Signal Out (25 mV/Div, 60 MHz), +Sawtooth, +Gate, Cal, camera power, probe power |
| Z Axis input | two: High Speed (60 Vp-p, DC-100 MHz), High Sensitivity (2 Vp-p, DC-2 MHz; 0.4 Vp-p @ 20 MHz) |
| CRT | 154-0609-00, 8 cm × 10 cm graticule, distributed vertical deflection plates, P31 phosphor standard |
| Acceleration voltage | 24 kV (+21/-2.96) |
| Power | 90-136 V or 180-272 V, 48-440 Hz, 210 W max. |
| Weight | 19.1 kg (42 lbs) |
| Size | 34.2 cm × 30.5 cm × 55.1 cm (H×W×L) |
Internals
The 7704 uses an all-discrete switch-mode power supply (SMPS) in resonant half-bridge topology. The CRT voltages and heating are produced in a separate switching stage running off the main SMPS DC output. Logic, channel switching, and readout use the classic TEK 7000 series custom ICs (155-0009-00 to 155-0022-00), the horizontal and vertical amplifiers are completely discrete.
Links
Pictures
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7704 front
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7704 rear
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7704 CRT and controls
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R7704
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Left internal
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Right internal
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Left side of 7704 contains power supply
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Right side of 7704 contains readout circuitry
