7704: Difference between revisions
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The '''Tektronix 7704''' is a 150 MHz, four-bay mainframe [[introduced in 1969|introduced in August 1969]] that 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]]. 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. | The '''Tektronix 7704''' is a 150 MHz, four-bay mainframe [[introduced in 1969|introduced in August 1969]] that 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]]. 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 also features the [[7000-series_remote_control_connector]] on the rear panel. | ||
It was superseded by the completely redesigned [[7704A]] in 1973. There is also a rack-mount version, the '''[[R7704]]'''. | It was superseded by the completely redesigned [[7704A]] in 1973. There is also a rack-mount version, the '''[[R7704]]'''. | ||
Revision as of 14:40, 10 November 2021
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 also features the 7000-series_remote_control_connector on the rear panel.
It was superseded by the completely redesigned 7704A in 1973.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
Custom ICs used in the 7704