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| The Tektronix 5031 is a dual-beam storage oscilloscope. There is a benchtop model, the 5031,
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| and a rack-mount model, the R5031.
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| The channel-1 and channel-2 input attenuators use a rotary barrel cam that moves several small contact
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| arms to select the desired path through the attenuator networks.
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| The design is similar to that seen in several 7000-series plug-ins.
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| The front-end amplifier starts with a differential amplifier formed by
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| both halves of a dual JFET, Q46, followed by a dual PNP.
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| The rest of the signal path comprises differential amplifiers make of discrete
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| BJTs, including the deflection amplifier.
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| The 5031 has -4.1kV on the CRT cathode, and no post-deflection acceleration.
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| * [http://w140.com/tek_r5031.pdf Tektronix R5031 Manual (PDF)]
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