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The Tektronix Type Z is a comparator plug-in for [[500-series scopes]].
{{Plugin Sidebar
Its maximum sensitivity is 50mV/div, and it achieves 40,000 to 1 common-mode
|manufacturer=Tektronix
rejection at DC and low frequencies.  Its risetime as a general-purpose
|series=500-series scopes
amplifier is 27ns (13MHz bandwidth), but it can track a common-mode risetime of 7ns.
|type=Type Z
|summary=Comparator preamp plug-in
|image=Tek Type Z front.jpg
|caption=Type Z front view
|introduced=1960
|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)
}}
The '''Tektronix Type Z''' is a comparator plug-in for [[500-series scopes]], [[introduced in 1960]] and dropped after 1968.
It was designed by [[Charlie Rhodes]] and [[Ron Olson]].


Type Z has two inputs, A and B, plus a precision comparison voltage, Vc, 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 +/-1V, 10V, or 100V 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 A, -B, A-B, A-Vc, or Vc-B.


Unlike later comparators, it has a separate step attenuator for each input,
The following differential amplifier can be configured to display V<sub>A</sub>, −V<sub>B</sub>,  
permitting you to view the difference between signals of widely differing amplitudes.
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>.
It is also the only comparator that can handle +/- 100V common mode at full sensitivity.


With a pair of "Disconnect Signal" buttons, Type Z was the first movement toward a "Gnd"
This allows DC-coupled measurements of small signals with large DC offsets.
position on the input switches.


Type Z was [[introduced in 1960]] and uses both tubes and transistors,
Unlike later comparators, Type Z has separate step attenuators for each input,
capitalizing on each's strengths. It was dropped after 1968.
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.


The Type [[P6023]] probe, introduced in 1962 with R and C compensation,
It is also the only comparator that can handle ±100 V common mode at full sensitivity.
was specifically designed for Type Z but also marketed for Type [[G]].


* http://bama.edebris.com/manuals/tek/z/
With a pair of "Disconnect Signal" buttons, the Type Z was the first
* http://w140.com/tek_fcp/tek_type_z_factory_cal_proc.pdf
movement toward a "GND" position on the input switches.
 
The Type [[P6023]] probe with R and C compensation, [[introduced in 1962]],
was specifically designed for the Type Z but also marketed for the Type [[G]].
 
==Specifications==
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 (~$5,300 in 2023 dollars)
 
==Links==
* [http://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_other/Z.html Type Z @ amplifier.cd]
 
==Pictures==
 
<gallery>
Tek Type Z front.jpg |Front view
Tek z front.jpg|3/4 View
Tek z 1.jpg| Front View
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
Tek type z front2.jpeg
</gallery>
 
===Schematics===
<gallery>
Tek_z_turret.png|Attenuators
Tek_z_schem.png|Main Amplifier
</gallery>
 
==Components==
{{Parts|Z}}
 
[[Category:500 series plugins]]
[[Category:Differential amplifiers]]

Latest revision as of 07:24, 6 December 2023

Tektronix Type Z
Comparator preamp plug-in
Type Z front view

Compatible with 500-series scopes

Produced from 1960 to 1969

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix Type Z is a comparator plug-in for 500-series scopes, introduced in 1960 and dropped after 1968. It was designed by Charlie Rhodes and Ron Olson.

The Type Z has two inputs, A and B, plus a precision comparison voltage, VC, that is adjustable from 0 to ±1 V, 10 V, or 100 V via a ten-turn pot.

The following differential amplifier can be configured to display VA, −VB, VA−VB, VA−VC, or VC−VB.

This allows DC-coupled measurements of small signals with large DC offsets.

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. Unfortunately the divider resistors have no trim, so CMRR is poor except at 50mV/div.

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.

The Type P6023 probe with R and C compensation, introduced in 1962, was specifically designed for the Type Z but also marketed for the Type G.

Specifications

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.

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 (~$5,300 in 2023 dollars)

Links

Pictures

  • Front view

    Front view

  • 3/4 View

    3/4 View

  • Front View

    Front View

  • Front View

    Front View

  • Pre-production Type Z with different knob color

    Pre-production Type Z with different knob color

  • Left Side

    Left Side

  • Left Side

    Left Side

  • Right Side

    Right Side

  • Right Side

    Right Side

  • Right Side

    Right Side

  • Right Side Tubes

    Right Side Tubes

  • Top

    Top

  • Rear

    Rear

Schematics

  • Attenuators

    Attenuators

  • Main Amplifier

    Main Amplifier

Components

Some Parts Used in the Z

Part Part Number(s) Class Description Used in
0G3 154-0291-00 Gas Discharge Tube (Voltage regulator) 85 V voltage reference 132 • 506 • 547 • 560 • 561 • 561A • 561S • 564 • 565 • 567 • 661 • TU-4 • Z • Keithley 610
12AT7 154-0039-00 Vacuum Tube (Dual Triode) dual high-gain triode 161 • 180 • 310 • 310A • 315 • 316 • 360 • 502 • 502A • 511A • 512 • 513 • 513D • 514 • 514AD • 514D • 516 • 524 • 529 • RM529 • 544 • 546 • 547 • 556 • 565 • 570 • 3A2 • 75 • 3A75 • 1M1 • A • B • C • G • H • K • L • ML • M • N • K • R • S • Z • Keithley 610B
12AU6 154-0040-00 Vacuum Tube (Pentode) RF pentode 81 • 112 • 1L10 • 1L20 • 1L60 • 3L10 • 512 • 556 • 575 • 545 • 547 • 549 • 581 • 585 • A • B • C • G • K • H • L • ML • M • N • O • R • S • Z
6AK5 154-0014-00 • 154-0206-00 • 154-0084-00 Vacuum Tube (Pentode) RF pentode B • C • CA • G • K • L • ML • S • Z • 517 • 517A • 524
6DJ8 154-0187-00 • 154-0305-00 Vacuum Tube (Dual Triode) dual triode 067-506 • 111 • 132 • 161 • 310A • 316 • 317 • 502 • 502A • 503 • 504 • 506 • 515 • 516 • 519 • 526 • 529 • RM529 • 533 • 535 • 536 • 543 • 544 • 545 • 545A • 545B • 546 • 547 • 549 • 555 • 556 • 561A • 561S • 564 • 565 • 567 • 581 • 581A • 585 • 585A • 661 • 1A4 • 1S1 • 60 • 2A60 • 63 • 2A63 • 67 • 2B67 • 3A1 • 3A1S • 3A2 • 3A3 • 3A6 • 3A7 • 72 • 3A72 • 75 • 3A75 • 4S2 • 51 • 3B1 • 3B1S • 3B2 • 3B3 • 3B4 • 3M1 • 3S76 • 3T77 • 3T77A • 9A1 • 9A2 • 1121 • 80 • 81 • 82 • 86 • B • O • W • Z • Telequipment D56 • Telequipment S32A • Telequipment D52 • S-311 • Telequipment TD51 • Telequipment S52 • Telequipment S51 • Telequipment Type A • TU-4
RT5204 151-0058-00 Discrete component Silicon NPN transistor 565 • RM565 • Z • 2A61 • 3B1 • 3B3 • 3S76 • 3T77
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