7704: Difference between revisions

7704 (view source)

Revision as of 15:05, 29 September 2020

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 {{Oscilloscope Sidebar|
 title=Tektronix 7704|
-image=Image needed.jpg|
+image=7704-front.jpg |
-caption=Image needed|
+caption=Tek 7704 (non-A) CRT and controls |
 introduced=1969 |
 discontinued=1972 |
@@ Line 8: / Line 8: @@
 manuals=
 * [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
 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+It was superseded by the completely redesigned [[7704A]] in 1973.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]] in 1973.
+{{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==
-[[Category:Specifications needed]] ''please add ''
 ==Links==
+* [http://www.barrytech.com/tektronix/tek7000/tek7704.html Tek 7704 @ barrytech.com]
 ==Pictures==
 <gallery>
-File:USA Tektronix 7704A Front0.jpg
+-front.jpg       | 7704 front
-Image:7704_powersupply.jpg|Left side of 7704 contains power supply.
+Tek_7704_rear.jpg    | 7704 rear
-Image:7704 right2.jpg|Right side of 7704 contains readout circuitry.
+Tek 7704 2.jpg       | 7704 CRT and controls
+tek-r7704.jpg        | R7704
+Tek_7704_left.jpg    | Left internal
+Tek 7704 right.jpg   | Right internal
+_powersupply.jpg | Left side of 7704 contains power supply
+right2.jpg      | Right side of 7704 contains readout circuitry
 </gallery>
 [[Category:7000 series non-storage mainframes]]
-[[Category:Image needed]]
-__NOTOC__