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{{Plugin Sidebar 2|
{{Plugin Sidebar  
title=Tektronix Type Z|
|manufacturer=Tektronix
summary=Comparator preamp plug-in|
|series=500-series scopes
image=Tek z front.jpg |  
|type=Type Z
caption=Type Z front view|
|summary=Comparator preamp plug-in
introduced=1960 |
|image=Tek Type Z front.jpg
discontinued=1968 |
|caption=Type Z front view
series=[[500-series scopes]]|
|introduced=1960  
manuals=
|discontinued=1969
* [http://bama.edebris.com/manuals/tek/z/ Tektronix Type Z Manual (BAMA)]
|designers=Charlie Rhodes;Ron Olson
* [http://w140.com/tek_fcp/tek_type_z_factory_cal_proc.pdf Tektronix Type Z Factory Calibration Procedure (PDF)]
|manuals=
* [[Media:070-251.pdf|Tektronix Type Z Manual]] (PDF, OCR)
* [[Media:tek_type_z_fcp.pdf|Tektronix Type Z Factory Calibration Procedure (PDF)]]
* [[Media:Tek type z cal outline.pdf|Tektronix Type Z Calibration Outline (PDF, OCR)]]
}}
}}
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.
Its two main subsystems are a differential amplifier and a precision variable
DC voltage source, which can be used as one of the amplifier inputs.
This allows DC-coupled measurements of small signals with large DC offsets. 
Its maximum sensitivity is 50 mV/div, and it achieves 40,000 to 1 common-mode
rejection at DC and low frequencies.  Its risetime as a general-purpose
amplifier is 27 ns (13 MHz bandwidth), but it can track a common-mode risetime of 7ns.


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 +/-1 V, 10 V, or 100 V via a ten-turn pot.  It's possible to
adjustable from 0 to ±1 V, 10 V, or 100 V via a ten-turn pot.   
view 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>.
 
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, it has a separate step attenuator for each input,
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.
It is also the only comparator that can handle +/- 100 V common mode at full sensitivity.
Unfortunately the divider resistors have no trim, so CMRR is poor except at 50mV/div.
The Type Z uses two [[turret attenuators]].
 
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 of the
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 Z was [[introduced in 1960]] and uses both tubes and transistors,
The Type [[P6023]] probe with R and C compensation, [[introduced in 1962]],
capitalizing on the strengths of each.  It was dropped after 1968.
 
The Type [[P6023]] probe, [[introduced in 1962]] with R and C compensation,
was specifically designed for the Type Z but also marketed for the Type [[G]].
was specifically designed for the Type Z but also marketed for the Type [[G]].


==Specifications==
==Specifications==
[[Category:Specifications needed]] ''please add''
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==
* [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_other/Z.html Type Z @ amplifier.cd]


==Pictures==
==Pictures==


<gallery>
<gallery>
Image:Tek z front.jpg|Front View
Tek Type Z front.jpg |Front view
Image:Tek z left.jpg|Left Side
Tek z front.jpg|3/4 View
File:Tek_z_schem.png|Schematic
Tek z 1.jpg| Front View
File:Tek_z_turret.png|Attenuators
Tek z 7.jpg | Front View
Tek type z pre-prod.jpg|Pre-production Type Z with different knob color
Tek z left.jpg|Left Side
Tek z 5.jpg | Left Side
Tek_TypeZ-RHS.jpeg | Right Side
Tek z 2.jpg | Right Side
Tek z 3.jpg | Right Side
Tek z 6.jpg | Right Side  Tubes
Tek_TypeZ-Top.jpeg  | Top
Tek z 4.jpg | Rear
</gallery>
 
==Schematic==
<gallery>
Tek_z_turret.png|Attenuators
Tek_z_schem.png|Main Amplifier
</gallery>
</gallery>
{{Parts|Z}}


[[Category:500 series plugins]]
[[Category:500 series plugins]]
[[Category:Differential amplifiers]]
[[Category:Differential amplifiers]]
Retrieved from "https://w140.com/tekwiki/wiki/Special:MobileDiff/11984...69637"

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