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{{Plugin Sidebar | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
summary=Comparator preamp plug-in| | |series=500-series scopes | ||
image=Tek | |type=Type Z | ||
caption=Type Z front view| | |summary=Comparator preamp plug-in | ||
introduced=1960 | | |image=Tek Type Z front.jpg | ||
discontinued=1969 | | |caption=Type Z front view | ||
|introduced=1960 | |||
manuals= | |discontinued=1969 | ||
|designers=Charlie Rhodes;Ron Olson | |||
|manuals= | |||
* [[Media:070-251.pdf|Tektronix Type Z Manual]] (OCR) | |||
* [[Media:tek_type_z_fcp.pdf|Tektronix Type Z Factory Calibration Procedure]] | |||
* [[Media:Tek type z cal outline.pdf|Tektronix Type Z Calibration Outline]] (OCR) | |||
* [[Media: | |||
}} | }} | ||
The '''Tektronix Type Z''' is a comparator plug-in for [[500-series scopes]] | The '''Tektronix Type Z''' is a comparator plug-in for [[500-series scopes]], [[introduced in 1960]] and dropped after 1968. | ||
The Type Z has two inputs, A and B, plus a precision comparison voltage, V<sub>C</sub>, that is | The Type Z has two inputs, A and B, plus a precision comparison voltage, V<sub>C</sub>, that is | ||
adjustable from 0 to | adjustable from 0 to ±1 V, 10 V, or 100 V via a ten-turn pot. | ||
V<sub>A</sub>−V<sub>C</sub>, or V<sub>C</sub>−V<sub>B</sub>. | The following differential amplifier can be configured to display V<sub>A</sub>, −V<sub>B</sub>, | ||
V<sub>A</sub>−V<sub>B</sub>, V<sub>A</sub>−V<sub>C</sub>, or V<sub>C</sub>−V<sub>B</sub>. | |||
This allows DC-coupled measurements of small signals with large DC offsets. | |||
Unlike later comparators, | Unlike later comparators, Type Z has separate step attenuators for each input, | ||
permitting the user to view the difference between signals of widely differing amplitudes. | permitting the user to view the difference between signals of widely differing amplitudes. | ||
Unfortunately the divider resistors have no trim, so CMRR is poor except at 50mV/div. | |||
With a pair of "Disconnect Signal" buttons, the Type Z was the first | It is also the only comparator that can handle ±100 V common mode at full sensitivity. | ||
With a pair of "Disconnect Signal" buttons, the Type Z was the first | |||
movement toward a "GND" position on the input switches. | movement toward a "GND" position on the input switches. | ||
The Type [[P6023]] probe with R and C compensation, [[introduced in 1962]], | The Type [[P6023]] probe with R and C compensation, [[introduced in 1962]], | ||
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==Specifications== | ==Specifications== | ||
[[Category:Specifications needed]] | Maximum sensitivity is 50 mV/div, and common-mode rejection is 40,000:1 "from DC through audio frequencies". | ||
Risetime as a general-purpose amplifier is 27 ns (13 MHz bandwidth). A side effect of Type Z's unprecedented dynamic range is that transient response is a function of signal amplitude: slew rates faster than 1V in 6ns will cause distortion due to grid current. | |||
[[Category:Specifications needed]] | |||
==Internals== | |||
The Type Z uses both tubes and transistors, capitalizing on the strengths of each. | |||
The step attenuators are [[turret attenuators]]. | |||
==Prices== | |||
* $525 in 1962 ($4,750 in 2021 dollars) | |||
==Links== | ==Links== | ||
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<gallery> | <gallery> | ||
Tek z front.jpg| | Tek Type Z front.jpg |Front view | ||
Tek z front.jpg|3/4 View | |||
Tek z 1.jpg| Front View | Tek z 1.jpg| Front View | ||
Tek z 7.jpg | Front View | Tek z 7.jpg | Front View | ||
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Tek_z_schem.png|Main Amplifier | Tek_z_schem.png|Main Amplifier | ||
</gallery> | </gallery> | ||
{{Parts|Z}} | |||
[[Category:500 series plugins]] | [[Category:500 series plugins]] | ||
[[Category:Differential amplifiers]] | [[Category:Differential amplifiers]] |