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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]].
 
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 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 right compartment holds the digital unit, either a [[6R1]] or a [[6R1A]].
It is possible to operate a 567 without the digital unit but 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.
 
==Internals==
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.
Therefore, it operates on a low-speed signal, somewhat similar to the intermediate frequency (IF) in a superheterodyne radio. 
 
The user of the 567 positions two cursors along the X-axis.
These cursors define two times and two 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%.
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 multi-pin connector in the 567. 
 
The 567 does not have any post-deflection acceleration of the beam.
The CRT circuit uses two [[5642]] high-voltage rectifier tubes, one (V822)
to generate the CRT cathode voltage (−3.3 kV) and one (V832) to generate the CRT
grid bias voltage.  CRTs used were [[T5032]] (earlier) and [[T5611]] (later models).
 
A 567 can perform remotely controlled measurements by connecting a [[262]]
programmer to the [[6R1]] or [[6R1A]] that is in the 567.
 
There is an extender plug-in, the [[067-0505-00]], that allows a [[6R1]] or [[6R1A]]
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:  
Bench models:  
Line 23: Line 91:
* Total = 368
* Total = 368


Grand Total = approx. 2300"
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


The 567 has three plug-in compartments. 
==Pictures==
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 right compartment holds the digital unit, either a [[6R1]] or a [[6R1A]].
It is possible to operate a 567 without the digital unit but
in that configuration it provides only the functionality that
a [[561]] provides.


The [[6R1]] and [[6R1A]] digital units have several different operating
<gallery>
modes. These modes can be classified as time measurement or
567_front.jpg|Front view, w 6R1A digital unit
voltage measurement.  One time measurement mode, for example,
567_front_6r1.jpg | Front view, w 6R1 digital unit
shows the time delay between the rising pulse edge on input A
RM567_w_6R1A.JPG | Front view of RM567 w 6R1A digital unit
and the falling pulse edge on input B. This is useful for measuring
Tek_567_introduction2.jpg|576 Introduction in 1962 Catalog
the speed of a logic gate such as an inverter. One of the voltage
Tek567-3s76-3t77.jpg
measurement modes displays the difference between the input A voltage
Tek 567 ps top.jpg|Top view power supply.  Blue capacitors are not original.
at on time and the input A voltage at some other time. This is
Tek 567 plug-in bay.jpg|Plug-in bay
useful for measuring the peak-to-peak amplitude of a signal.
Tek 567 ps bottom.jpg|Bottom view power supply
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>


The mechanisms used by the digital unit are a sample and hold
==Components==
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.  Therefore, it operates on a low-speed
signal, somewhat similar to the intermediate frequency (IF) in
a superheterodyne radio.  The user of the 567 positions two
cursors along the X-axis.  These cursors define two times and
two 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%.  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 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.
{{Parts|567}}
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
grid bias voltage. 


A 567 can be perform remotely controlled measurements by connecting a [[262]]
[[Category:560 series scopes]]
programmer to the [[6R1]] or [[6R1A]] that is in the 567.
[[Category:Sampling scopes]]
<gallery>
Image:567_front.jpg|Front view
</gallery>
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