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6R1: Difference between revisions
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{{Plugin Sidebar | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
summary=Digital readout plug-in | | |series=567 | ||
image=6r1_front.jpg| | |type=6R1 | ||
caption=6R1 Front view| | |summary=Digital readout plug-in | ||
series=[[567]] scope| | |image=6r1_front.jpg | ||
introduced=1962 | | |caption=6R1 Front view | ||
discontinued=(?) | | |series=[[567]] scope | ||
manuals= | |introduced=1962 | ||
|discontinued=(?) | |||
|designers= | |||
|manuals= | |||
* [http://w140.com/tek_6r1_schem.pdf 6R1 Schematics] | * [http://w140.com/tek_6r1_schem.pdf 6R1 Schematics] | ||
* [http://bama.edebris.com/download/tek/6r1/tek%206r1.v6.pdf Tektronix 6R1 Manual (PDF)] | * [http://bama.edebris.com/download/tek/6r1/tek%206r1.v6.pdf Tektronix 6R1 Manual (PDF)] | ||
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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 are used as a ramp-compare ADC. | ||
are used as a ramp-compare ADC. | |||
The 6R1 contains digital logic but no integrated circuits. | The 6R1 contains digital logic but no integrated circuits. | ||
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Most of the digital signals within the 6R1 use 0 V to represent a "0" and 20 V to represent a "1". | Most of the digital signals within the 6R1 use 0 V to represent 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 classic cross-coupled transistor pair. The counter is composed of | The counter is composed of several of these flip-flop subcircuits, as are various other state machines in the 6R1. | ||
several of these flip-flop subcircuits, 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. | ||
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The 6R1 contains more than one of some of the boards, seventeen boards in total. | The 6R1 contains more than one of some of the boards, seventeen boards in total. | ||
The digital display of the Tektronix 6R1 is composed of | The digital display of the Tektronix 6R1 is composed of four Burroughs [[B5092]] Nixie tubes for the digits, and one Burroughs [[B5094]] Nixie tube for the units. | ||
four Burroughs [[B5092]] Nixie 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) | ||
*Board B: DIVIDE BY 1,2,5 | * Board B: DIVIDE BY 1,2,5 | ||
*Board C: MASTER GATE | * Board C: MASTER GATE | ||
*Board D: SIGNAL COMPARATOR (6R1 has two of these) | * Board D: SIGNAL COMPARATOR (6R1 has two of these) | ||
*Board E: VOLTMETER | * Board E: VOLTMETER | ||
*Board F: UPPER LIMIT NO-GO | * Board F: UPPER LIMIT NO-GO | ||
*Board G: LOWER LIMIT NO-GO | * Board G: LOWER LIMIT NO-GO | ||
*Board H: LIGHT LIMIT DRIVER | * Board H: LIGHT LIMIT DRIVER | ||
*Board I: DIVIDE BY 10 | * Board I: DIVIDE BY 10 | ||
*Board J: ANALOG DISPLAY | * Board J: ANALOG DISPLAY | ||
*Board K: 0% ZONE | * Board K: 0% ZONE | ||
*Board L: MEMORY (6R1 has two of these) | * Board L: MEMORY (6R1 has two of these) | ||
When a 6R1 is used in a 567 with a [[3T77]], the horizontal sweep signal is | When a 6R1 is used in a 567 with a [[3T77]], the horizontal sweep signal is generated by the staircase generator circuit in the 3T77. | ||
generated by the staircase generator circuit in the 3T77. From R184 in the | From R184 in the 3T77's staircase generator, the sweep signal is sent to the horizontal amplifier circuit of the 3T77, where it enters the sweep mode switch. | ||
3T77's staircase generator, the sweep signal is sent to the horizontal amplifier circuit | Assuming that the sweep mode switch is in the NORMAL or SINGLE DISPLAY positions, the sweep signal is sent out through R318 to pin 20 on P22, the connector on the rear of the 3T77. | ||
of the 3T77, where it enters the sweep mode switch. Assuming that the sweep mode | The 567 carries the signal to pin 8 on P32 of the 6R1. Within the 6R1, the sweep signal is carried to pin 7 of the 0% zone card. | ||
switch is in the NORMAL or SINGLE DISPLAY positions, the sweep signal is sent out | |||
through R318 to pin 20 on P22, the connector on the rear of the 3T77. The 567 carries | |||
the signal to pin 8 on P32 of the 6R1. Within the 6R1, the sweep signal is carried | |||
to pin 7 of the 0% zone card. | |||
== Board K: 0% ZONE == | == Board K: 0% ZONE == | ||