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6R1: Difference between revisions
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* [http://w140.com/tek_6r1_schem.pdf 6R1 Schematics] | |||
* [http://bama.edebris.com/download/tek/6r1/tek%206r1.v6.pdf Tektronix 6R1 Manual (PDF)] | |||
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The '''Tektronix Type 6R1''' is a plug-in for the [[567]] oscilloscope. It was later replaced by the [[6R1A]]. | The '''Tektronix Type 6R1''' is a plug-in for the [[567]] oscilloscope. It was later replaced by the [[6R1A]]. | ||
The 6R1 provides digital readout of time and voltage measurements | The 6R1 provides digital readout of time and voltage measurements on waveforms. | ||
on waveforms. The 6R1 (and the 567 in general) is oriented toward sampling measurements. | The 6R1 (and the 567 in general) is oriented toward sampling measurements. | ||
The basic building blocks of the 6R1 are a counter and comparators. | The basic building blocks of the 6R1 are a counter and comparators. | ||
To digitize analog voltages, the counter and comparator | To digitize analog voltages, the counter and comparator | ||
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Its functions are implemented using dozens of discrete bipolar transistors, | Its functions are implemented using dozens of discrete bipolar transistors, | ||
fourteen vacuum tubes (depending on version), and a few tunnel diodes. | fourteen vacuum tubes (depending on version), and a few tunnel diodes. | ||
Most of the digital signals | |||
within the 6R1 use | Most of the digital signals within the 6R1 use 0 V to represente a "0" and 20 V to represent a "1". | ||
Flip-flops (bistable multivibrators) are implemented in the 6R1 using | Flip-flops (bistable multivibrators) are implemented in the 6R1 using | ||
the classic cross-coupled transistor pair. The counter is composed of | the classic cross-coupled transistor pair. The counter is composed of | ||
several of these flip-flop subcircuits, | several of these flip-flop subcircuits, as are various other state machines in the 6R1. | ||
as are various other state machines in the 6R1. | |||
All of the active circuitry of the 6R1 is on small plug-in printed circuit boards. | All of the active circuitry of the 6R1 is on small plug-in printed circuit boards. | ||
There are twelve different boards labeled A through L. | There are twelve different boards labeled A through L. | ||
The 6R1 contains more than one of some of the boards, | The 6R1 contains more than one of some of the boards, seventeen boards in total. | ||
seventeen boards in total. | |||
The digital display of the Tektronix 6R1 is composed of four [[ | The digital display of the Tektronix 6R1 is composed of four Burroughs [[B5092]] Nixie | ||
tubes for the digits, and one | tubes for the digits, and one | ||
[ | Burroughs [[B5094]] Nixie tube for the units. | ||
*Board A: COUNTER (6R1 has four of these) | *Board A: COUNTER (6R1 has four of these) | ||
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while the instrument is powered up. | while the instrument is powered up. | ||
==Pictures== | |||
<gallery> | <gallery> | ||
Image:6r1_front.jpg|Front view | Image:6r1_front.jpg|Front view | ||