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{{Oscilloscope Sidebar|
{{Oscilloscope Sidebar|
title=Tektronix 7704|
title=Tektronix 7704|
image=Image needed.jpg|
image=7704-front.jpg |
caption=Image needed|
caption=Tek 7704 (non-A) CRT and controls |
years=1969 1972?|
introduced=1969 |
discontinued=1972 |
summary=150 MHz non-storage mainframe|
summary=150 MHz non-storage mainframe|
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 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It was superseded by the completely redesigned [[7704A]] in 1973.
There is also a rack-mount version, the '''R7704'''.


The rated bandwidth is 150 MHz. The 7704 was succeeded by the [[7704A]].  
{{BeginSpecs}}
{{Spec | Fastest cal. sweep | 2 ns/Div  }}
{{Spec | Bandwidth | 150 MHz (with [[7A11]] or [[7A16]]) }}
{{Spec | Calibrator | 4 mV to 40 V in decade steps, 2/20/200/400 mV into 50 Ω, 40 mA; 1 kHz }}
{{Spec | Outputs | Vertical Signal Out (25 mV/Div, 60 MHz), +Sawtooth, +Gate, Cal, camera power, probe power }}
{{Spec | Z Axis input | two: High Speed (60 V<sub>p-p</sub>, DC-100 MHz), High Sensitivity (2 V<sub>p-p</sub>, DC-2 MHz; 0.4 V<sub>p-p</sub> @ 20 MHz) }}
{{Spec | CRT | [[154-0609-00]], 8 cm × 10 cm graticule, [[distributed vertical deflection plates]], P31 [[phosphor]] standard }}
{{Spec | Acceleration voltage | 24 kV (+21/-2.96) }}
{{Spec | Power | 90-136 V or 180-272 V, 48-440 Hz, 210 W max. }}
{{Spec | Weight | 19.1 kg (42 lbs) }}
{{Spec | Size | 34.2 cm × 30.5 cm × 55.1 cm (H×W×L) }}
{{EndSpecs}}


The 7704 uses a switch-mode power supply (SMPS).   
==Internals==
The CRT power supply is separate from the low voltage power supply.
The 7704 uses an all-discrete switch-mode power supply (SMPS) in resonant half-bridge topology.   
The 7704 SMPS is all discrete.   
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.   
==Specifications==


==Links==
==Links==
* [http://www.barrytech.com/tektronix/tek7000/tek7704.html Tek 7704 @ barrytech.com]


==Pictures==
==Pictures==
<gallery>
<gallery>
Image:7704_powersupply.jpg|Left side of 7704 contains power supply.
7704-front.jpg      | 7704 front
Image:7704 right2.jpg|Right side of 7704 contains readout circuitry.
Tek_7704_rear.jpg    | 7704 rear
Tek 7704 2.jpg      | 7704 CRT and controls
tek-r7704.jpg        | R7704
Tek_7704_left.jpg    | Left internal
Tek 7704 right.jpg  | Right internal
7704_powersupply.jpg | Left side of 7704 contains power supply
7704 right2.jpg     | Right side of 7704 contains readout circuitry
</gallery>
</gallery>


[[Category:7000 series non-storage mainframes]]
[[Category:7000 series non-storage mainframes]]
[[Category:Specifications needed]]
[[Category:Image needed]]
__NOTOC__

Revision as of 15:05, 29 September 2020

{{{manufacturer}}} 
150 MHz non-storage mainframe
Tek 7704 (non-A) CRT and controls

Produced from 1969 to 1972

Manuals
Manuals – Specifications – Links – Pictures

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