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series=[[500-series scopes]]| | series=[[500-series scopes]]| | ||
manuals= | manuals= | ||
* [http://w140.com/mmm/tek-w.pdf Tektronix Type W Manual (PDF)] | * [http://w140.com/mmm/tek-w.pdf Tektronix Type W Manual (37MB, PDF)] | ||
* [ | * [[Media:070-432.pdf|Tektronix Type W Manual (11MB, PDF)]] | ||
* [http://w140.com/tek_type_w_schematics.pdf Tektronix Type W Schematics Only (PDF)] | * [http://w140.com/tek_type_w_schematics.pdf Tektronix Type W Schematics Only (PDF)] | ||
* [[Media:Tek type w fcp jan 1969.pdf|Tektronix Type W Factory Calibration Procedure, January 1969 (PDF, needs OCR)]] | |||
* [[Media:Tek type w fcp no ocr.pdf|Tektronix Type W Factory Calibration Procedure, March 1969 (PDF, needs OCR)]] | |||
* [[Media:Tek type w cal outline.pdf|Tektronix Type W Calibration Outline (PDF, OCR)]] | |||
<!-- * [[Media:tek_type_w_schem_only.pdf|Tektronix Type W Schematics Only (PDF, OCR)]] --> | |||
}} | }} | ||
The '''Tektronix Type W''' is a differential comparator plug-in amplifier for [[500-series scopes]]. | The '''Tektronix Type W''' is a differential comparator plug-in amplifier for [[500-series scopes]]. | ||
Its bandwidth varies from 23 MHz to 8 MHz depending on gain. | Its bandwidth varies from 23 MHz to 8 MHz depending on gain. Type W is | ||
faster than its [[Z|Type Z]] predecessor, | faster than its [[Z|Type Z]] predecessor, and it extends performance in | ||
terms of sensitivity, reaching 1 mV/div. | terms of sensitivity, reaching 1 mV/div. It achieves 20,000 to 1 common-mode | ||
rejection at DC and low frequencies. | |||
Type W has two signal inputs, "A" and "B", and a built in precision variable voltage supply, "V<sub>C</sub>", | |||
which is controlled by a ten-turn pot and can vary from either −1.1 V to +1.1 V or −11 V to +11 V. | |||
which is controlled by a ten-turn pot and can vary from either | A mode switch selects between displaying A−V<sub>C</sub>, A−B, or V<sub>C</sub>−B. | ||
The "A−B" mode is particularly useful for displaying the current in a sense resistor, | |||
A mode switch selects between displaying | |||
The " | |||
while the other modes provide "slideback" measurements of small variations superimposed on a large constant. | while the other modes provide "slideback" measurements of small variations superimposed on a large constant. | ||
An output of V<sub>C</sub> is provided on the front panel for precision measurements. | |||
Unlike the Type Z, Type W has two gain axes: a decade attenuator and a 1−2−5−10−20−50 selector, | |||
Type W has two gain axes | |||
reminiscent of [[D|Type D]] from ten years before. | reminiscent of [[D|Type D]] from ten years before. | ||
Type W is the only letter-series plug-in with an "infinite resistance" input mode selectable at the front panel. | Type W is the only letter-series plug-in with an "infinite resistance" input mode selectable at the front panel. | ||
([[1A5|Type 1A5]] has an internal jumper that can be cut.) | ([[1A5|Type 1A5]] has an internal jumper that can be cut.) | ||
Original production uses a pair of type [[8056]] [[Nuvistor|Nuvistors]] in the front end; starting at serial number 7000 these were replaced with JFETs. | |||
In the letter-series timeline of differential comparators, Type W, [[introduced in 1965]], | In the letter-series timeline of differential comparators, Type W, [[introduced in 1965]], | ||
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[[Category:500 series plugins]] | [[Category:500 series plugins]] | ||
[[Category:Differential amplifiers]] |
Revision as of 11:11, 5 May 2021
Template:Plugin Sidebar 2 The Tektronix Type W is a differential comparator plug-in amplifier for 500-series scopes. Its bandwidth varies from 23 MHz to 8 MHz depending on gain. Type W is faster than its Type Z predecessor, and it extends performance in terms of sensitivity, reaching 1 mV/div. It achieves 20,000 to 1 common-mode rejection at DC and low frequencies.
Type W has two signal inputs, "A" and "B", and a built in precision variable voltage supply, "VC", which is controlled by a ten-turn pot and can vary from either −1.1 V to +1.1 V or −11 V to +11 V. A mode switch selects between displaying A−VC, A−B, or VC−B. The "A−B" mode is particularly useful for displaying the current in a sense resistor, while the other modes provide "slideback" measurements of small variations superimposed on a large constant. An output of VC is provided on the front panel for precision measurements.
Unlike the Type Z, Type W has two gain axes: a decade attenuator and a 1−2−5−10−20−50 selector, reminiscent of Type D from ten years before.
Type W is the only letter-series plug-in with an "infinite resistance" input mode selectable at the front panel. (Type 1A5 has an internal jumper that can be cut.)
Original production uses a pair of type 8056 Nuvistors in the front end; starting at serial number 7000 these were replaced with JFETs.
In the letter-series timeline of differential comparators, Type W, introduced in 1965, follows Type Z and precedes Type 1A5.
Specifications
please add
Pictures
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Front view.
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Top-left view.
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Bottom view.
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Block Diagram
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Differential Comparator
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Input Attenuators
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Switching Diagram
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A-phase (prototype) Type W
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A-phase (prototype) Type W
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A-phase (prototype) Type W
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A-phase (prototype) Type W
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A-phase (prototype) Type W