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The Type W is a differential comparator plug-in amplifier for [[500-series scopes]]. | {{Plugin Sidebar| | ||
Its bandwidth varies from | title=Tektronix Type W | | ||
depending on gain. Only modestly faster than its predecessor, the Type [[Z]], | summary=8-23 MHz differential comparator | | ||
the Type W extends performance in terms of sensitivity, reaching | image=type w front.jpg | | ||
caption=Type W front view| | |||
years=1965 – 1974 | | |||
type=Vertical Amplifier| | |||
series=[[500-series scopes]]| | |||
manuals= | |||
* [http://bama.edebris.com/manuals/tek/w/ Tektronix Type W Manual (BAMA)] | |||
}} | |||
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. Only modestly | |||
faster than its predecessor, the Type [[Z]], the Type W extends performance in | |||
terms of sensitivity, reaching 1 mV/div. | |||
It achieves 20,000 to 1 common-mode rejection at DC and low frequencies. | It achieves 20,000 to 1 common-mode rejection at DC and low frequencies. | ||
It has a built in precision variable voltage supply, " | It has 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. | 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. | ||
Type W has two signal inputs, "A" and "B". | Type W has two signal inputs, "A" and "B". | ||
A mode switch selects between displaying A-Vc, A-B, or Vc-B. | 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, | 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. | while the other modes provide "slideback" measurements of small variations superimposed on a large constant. | ||
An output of | |||
An output of V<sub>c</sub> is provided on the front panel of the Type W. Unlike the [[Z|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, a decade attenuator and a 1-2-5-10-20-50 selector, | ||
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. | ||
(Type [[1A5]] has an internal jumper that can be cut.) | (Type [[1A5]] has an internal jumper that can be cut.) | ||
In the letter-series timeline of differential amps, the Type W, [[introduced in 1965]], | In the letter-series timeline of differential amps, the Type W, [[introduced in 1965]], | ||
follows the Type [[Z]] and precedes [[1A5|Type 1A5]]. | follows the Type [[Z]] and precedes [[1A5|Type 1A5]]. Types W and [[O]] were "in at the finish", | ||
Types W and [[O]] were "in at the finish", | |||
available right up to the discontinuance of the entire 500-series plug-in scope line in 1974. | available right up to the discontinuance of the entire 500-series plug-in scope line in 1974. | ||
==Specifications== | |||
[[Category:Specifications needed]] ''please add'' | |||
==Pictures== | |||
<gallery> | <gallery> | ||
Image:Type_w_front.jpg|Front view. | Image:Type_w_front.jpg|Front view. | ||
| Line 32: | Line 48: | ||
File:Tek w switching diagram.png|Switching Diagram | File:Tek w switching diagram.png|Switching Diagram | ||
</gallery> | </gallery> | ||
[[Category:500 series plugins]] | |||