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|designers=Sam McCutcheon | |designers=Sam McCutcheon | ||
|manuals= | |manuals= | ||
* [[Media:070-0322-01.pdf|Tektronix 567 Manual]] | * [[Media:070-0322-01.pdf|Tektronix 567 Manual]] / [http://bama.edebris.com/download/tek/567/tek%20567.v6.pdf @ BAMA] | ||
* [https://w140.com/4499749_tek567.pdf Materials Characterization Application of 567 | * [https://w140.com/4499749_tek567.pdf Materials Characterization Application of 567] | ||
* [https://w140.com/tek_567_1968_catalog.pdf Tektronix 567 in 1968 Catalog | * [https://w140.com/tek_567_1968_catalog.pdf Tektronix 567 in 1968 Catalog] | ||
* [https://w140.com/tek_readout_oscilloscopes_1968_catalog.pdf "Digital Readout Introduction" in 1968 Catalog | * [https://w140.com/tek_readout_oscilloscopes_1968_catalog.pdf "Digital Readout Introduction" in 1968 Catalog] | ||
* [[Media:Tek digital readout oscilloscope and programmer.pdf|Digital Readout Oscilloscope and Programmer]] | * [[Media:Tek digital readout oscilloscope and programmer.pdf|Digital Readout Oscilloscope and Programmer]] | ||
* [[Media:Tek 6R1A and system calibration.pdf|Tektronix 6R1A and System Calibration ( | * [[Media:Tek 6R1A and system calibration.pdf|Tektronix 6R1A and System Calibration]] (OCR) | ||
* [[Media:Tek 567 cal outline.pdf|Tektronix 567 Calibration Outline ( | * [[Media:Tek 567 cal outline.pdf|Tektronix 567 Calibration Outline]] (OCR) | ||
* [[Media:070-348.pdf|Tektronix RM567 Instruction/Service Manual]] | * [[Media:070-348.pdf|Tektronix RM567 Instruction/Service Manual]] | ||
}} | }} | ||
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The 567 came after the [[661]] and before the [[568]] and its associated [[230]] Digital Unit. | The 567 came after the [[661]] and before the [[568]] and its associated [[230]] Digital Unit. | ||
The 567 is a self-contained oscilloscope, but is also used as a component of S2000- and | |||
S3000-series measurement systems. In that capacity, it typically uses one of the programmable | |||
plug-ins, [[S-311]], [[S-300]], or [[S-301]]. | |||
{{MissingSpecs}} | |||
==Operation== | |||
The 567 has three plug-in compartments. | The 567 has three plug-in compartments. | ||
The left compartment holds a 3S-series sampling vertical unit such as a [[3S2]]. | The left compartment holds a 3S-series sampling vertical unit such as a [[3S2]]. | ||
The center compartment holds a 3T-series sampling sweep unit such as a [[3T77]]. | The center compartment holds a 3T-series sampling sweep unit such as a [[3T77]]. | ||
The right compartment holds the digital unit, either a [[6R1]] or a [[6R1A]]. | The right compartment holds the digital unit, either a [[6R1]] or a [[6R1A]]. | ||
It is possible to operate a 567 without the digital unit but | It is possible to operate a 567 without the digital unit but in that configuration it provides only the functionality that a [[561]] provides. | ||
in that configuration it provides only the functionality that a [[561]] provides. | |||
The [[6R1]] and [[6R1A]] digital units have several different operating | The [[6R1]] and [[6R1A]] digital units have several different operating modes. | ||
modes. These modes can be classified as time measurement or | These modes can be classified as time measurement or voltage measurement. | ||
voltage measurement. One time measurement mode, for example, | One time measurement mode, for example, shows the time delay between the rising pulse edge on input A and the falling pulse edge on input B. | ||
shows the time delay between the rising pulse edge on input A | This is useful for measuring the speed of a logic gate such as an inverter. | ||
and the falling pulse edge on input B. This is useful for measuring | One of the voltage measurement modes displays the difference between the input A voltage at on time and the input A voltage at some other time. | ||
the speed of a logic gate such as an inverter. One of the voltage | This is useful for measuring the peak-to-peak amplitude of a signal. | ||
measurement modes displays the difference between the input A voltage | |||
at on time and the input A voltage at some other time. This is | |||
useful for measuring the peak-to-peak amplitude of a signal. | |||
The mechanisms used by the digital unit are a sample and hold circuit, | ==Internals== | ||
a comparator, a counter, and a switched tap voltage divider. | The mechanisms used by the digital unit are a sample and hold circuit, a comparator, a counter, and a switched tap voltage divider. | ||
The digital unit takes its input from the vertical signal produced by the sampling unit. | The digital unit takes its input from the vertical signal produced by the sampling unit. | ||
Therefore, it operates on a low-speed signal, | Therefore, it operates on a low-speed signal, somewhat similar to the intermediate frequency (IF) in a superheterodyne radio. | ||
somewhat similar to the intermediate frequency (IF) in a superheterodyne radio. | |||
The user of the 567 positions two cursors along the X-axis. | The user of the 567 positions two cursors along the X-axis. | ||
These cursors define two times and two voltages. | These cursors define two times and two voltages. | ||
The tapped voltage divider produces several voltages | The tapped voltage divider produces several voltages along the interval spanned by the two cursor voltages – 10%, 20%, 27%, 50%, 73%, 80%, and 90%. | ||
along the interval spanned by the two cursor voltages | |||
10%, 20%, 27%, 50%, 73%, 80%, and 90%. | |||
These voltages are used for making measurements such as the 10%-to-90% rise time. | These voltages are used for making measurements such as the 10%-to-90% rise time. | ||
In this case, a counter is reset and started when the signal passes through the 10% voltage. | In this case, a counter is reset and started when the signal passes through the 10% voltage. | ||
The counter counts the number of cycles of a built-in crystal clock. | The counter counts the number of cycles of a built-in crystal clock. | ||
When the signal reaches the 90% voltage, | When the signal reaches the 90% voltage, the counter is stopped and the count is displayed on the [[nixie tube]] digital numeric readout. | ||
the counter is stopped and the count is displayed on the [[nixie tube]] digital numeric readout. | The units and decimal place of the digital unit are controlled by switch contacts on the timing unit plug-in, | ||
The units and decimal place of the | |||
digital unit are controlled by switch contacts on the timing unit plug-in, | |||
which connect to the digital unit through a multi-pin connector in the 567. | which connect to the digital unit through a multi-pin connector in the 567. | ||
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to be operated outside the plug-in bay of the 567 for maintenance purposes. | to be operated outside the plug-in bay of the 567 for maintenance purposes. | ||
==Models== | |||
According to [[Stan Griffiths]], | |||
<blockquote> | |||
It looks like there were two different serial number runs of 567's. | |||
Bench models: | |||
* 000101-000750 = 650 instruments | |||
* 002000-003280 = 1280 instruments | |||
* Total = 1930 | |||
Rackmount models: | |||
* 000101-000228 = 128 instruments | |||
* 002000-002240 = 240 instruments | |||
* Total = 368 | |||
Grand Total = approx. 2300 | |||
</blockquote> | |||
==See Also== | ==See Also== |