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The Tektronix 567 is a [[sampling oscilloscope]] made by Tektronix in
{{Oscilloscope Sidebar
the mid 1960's, first sold in [[introduced_in_1962|1962]].
|manufacturer=Tektronix
It has a digital plug-in unit,
|series=560-series scopes
the [[6R1]] or [[6R1A]], that can be used to measure waveform characteristics
|model=567
such as rise time. This digital unit provides a go/no-go output
|summary=Sampling scope
based on waveform characteristics. This feature makes the 567  
|image=567 front.jpg
particularly useful in production testing for tasks such as binning
|caption=Tektronix 567 front
logic gates based on their speed.  The 567 came after the [[661]] and
|introduced=1962
before the [[568]] and its associated [[230]] Digital Unit.
|discontinued=1972
|designers=Sam McCutcheon
|manuals=
* [[Media:070-0322-01.pdf|Tektronix 567 Manual]]
* [[Media:070-348.pdf|Tektronix RM567 Manual]]
* [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]
* [[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]] (OCR)
* [[Media:Tek 567 cal outline.pdf|Tektronix 567 Calibration Outline]] (OCR)
* [https://w140.com/4499749_tek567.pdf Materials Characterization Application of 567]
}}
The '''Tektronix 567''' is a [[sampling oscilloscope]] mainframe [[introduced in 1962]].


According to Stan Griffiths,
It has a digital plug-in unit, the [[6R1]] or [[6R1A]], that can be used to measure waveform characteristics such as rise time. 
This digital unit provides a go/no-go output based on waveform characteristics. 
This feature makes the 567 particularly useful in production testing for tasks such as binning logic gates based on their speed. 


"It looks like there were two different serial number runs of 567's.
The development of the 567 (and 6R1) was led by [[Sam McCutcheon]].


Bench models:
The 567 came after the [[661]] and before the [[568]] and its associated [[230]] Digital Unit.
* 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"
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 modes. 
These modes can be classified as time measurement or voltage measurement. 
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. 
This is useful for measuring the speed of a logic gate such as an inverter. 
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. 
This is useful for measuring the peak-to-peak amplitude of a signal.


The [[6R1]] and [[6R1A]] digital units have several different operating
==Internals==
modes.  These modes can be classified as time measurement or
The mechanisms used by the digital unit are a sample and hold circuit, a comparator, a counter, and a switched tap voltage divider.   
voltage measurement.  One time measurement mode, for example,  
The digital unit takes its input from the vertical signal produced by the sampling unit.
shows the time delay between the rising pulse edge on input A
Therefore, it operates on a low-speed signal, somewhat similar to the intermediate frequency (IF) in a superheterodyne radio.
and the falling pulse edge on input B.  This is useful for measuring
the speed of a logic gate such as an inverter.  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.  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
The user of the 567 positions two cursors along the X-axis.
circuit, a comparator, a counter, and a switched tap voltage divider. 
These cursors define two times and two voltages.   
The digital unit takes its input from the vertical signal produced
The tapped voltage divider produces several voltages along the interval spanned by the two cursor voltages – 10%, 20%, 27%, 50%, 73%, 80%, and 90%.
by the sampling unit.  Therefore, it operates on a low-speed
These voltages are used for making measurements such as the 10%-to-90% rise time.   
signal, somewhat similar to the intermediate frequency (IF) in
In this case, a counter is reset and started when the signal passes through the 10% voltage.   
a superheterodyne radio.  The user of the 567 positions two  
The counter counts the number of cycles of a built-in crystal clock.
cursors along the X-axis. These cursors define two times and  
When the signal reaches the 90% voltage, the counter is stopped and the count is displayed on the [[nixie tube]] digital numeric readout.
two voltages.  The tapped voltage divider produces several
The units and decimal place of the digital unit are controlled by switch contacts on the timing unit plug-in,
voltages along the interval spanned by the two cursor voltages:
which connect to the digital unit through a multi-pin connector in the 567.   
10%, 20%, 27%, 50%, 73%, 80%, and 90%. 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.  The counter counts the number of cycles of a
built-in crystal clock. When the signal reaches the 90% voltage,
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,
which connect to the digital unit through a multipin connector in
the 567.   


The 567 does not have any post-deflection acceleration of the beam.
The 567 does not have any post-deflection acceleration of the beam.
The CRT circuit uses two [[5642]] high-voltage rectifier tubes, one (V822)
The CRT circuit uses two [[5642]] high-voltage rectifier tubes, one (V822)
to generate the CRT cathode voltage (-3300V) and one (V832) to generate the CRT
to generate the CRT cathode voltage (−3.3 kV) and one (V832) to generate the CRT
grid bias voltage.   
grid bias voltage.  CRTs used were [[T5032]] (earlier) and [[T5611]] (later models).


A 567 can be perform remotely controlled measurements by connecting a [[262]]
A 567 can perform remotely controlled measurements by connecting a [[262]]
programmer to the [[6R1]] or [[6R1A]] that is in the 567.
programmer to the [[6R1]] or [[6R1A]] that is in the 567.


* [http://bama.edebris.com/download/tek/567/tek%20567.v6.pdf Tektronix 567 Manual (PDF)]
There is an extender plug-in, the [[067-0505-00]], that allows a [[6R1]] or [[6R1A]]
* [http://w140.com/4499749_tek567.pdf Materials Characterization Application of 567 (PDF)]
to be operated outside the plug-in bay of the 567 for maintenance purposes.
* [http://w140.com/tek_567_1968_catalog.pdf Tektronix 567 in 1968 Catalog (PDF)]
 
==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==
* [[Patent US 3359491A|US Patent #3359491: Signal Waveform Characteristic Measuring System Having Stop Start Logic Circuit]], Sam McCutcheon, 1962
 
==Pictures==


<gallery>
<gallery>
Image:567_front.jpg|Front view
567_front.jpg|Front view, w 6R1A digital unit
File:Tek_567_introduction2.jpg|576 Introduction in 1962 Catalog
567_front_6r1.jpg | Front view, w 6R1 digital unit
Image:Tek567-3s76-3t77.jpg
RM567_w_6R1A.JPG | Front view of RM567 w 6R1A digital unit
Image:Tek 567 ps top.jpg|Top view power supply
Tek_567_introduction2.jpg|576 Introduction in 1962 Catalog
Image:Tek 567 plug-in bay.jpg|Plug-in bay
Tek567-3s76-3t77.jpg
Image:Tek 567 ps bottom.jpg|Bottom view power supply
Tek 567 ps top.jpg|Top view power supply.  Blue capacitors are not original.
Image:Tek 567 plug-in connectors.jpg|Plug-in connectors rear
Tek 567 plug-in bay.jpg|Plug-in bay
Image:Tek 567 plug-in connectors2.jpg|Plug-in connectors front
Tek 567 ps bottom.jpg|Bottom view power supply
File:S52 s4 567.jpg
Tek 567 plug-in connectors.jpg|Plug-in connectors rear
Tek 567 plug-in connectors2.jpg|Plug-in connectors front
S52 s4 567.jpg|567 measuring 37ps combined rise time of [[S-52]] and [[S-4]]
Tek-567 interconnections.png|Interconnections
Tek-567 power supply.png|Power Supply
Tek-567 calibrator.png|Calibrator
Tek-567 crt circuit.png|CRT Circuit
Motorola mc314.png|Motorola MC314 Datasheet Specifying Tek 567 for Timing Measurements
Tek rm 567 small.jpg|Rackmount Version, the RM 567
</gallery>
</gallery>
==Components==
{{Parts|567}}
[[Category:560 series scopes]]
[[Category:Sampling scopes]]
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