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The Tektronix Type K is a plug-in for [[500-series scopes]]. | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
|series=500-series scopes | |||
|type=Type K | |||
|summary=30 MHz amplifier plug-in | |||
|image=Tek type k front.jpeg | |||
|caption=Type K | |||
|introduced=1955 | |||
|discontinued=1971 | |||
|designers=John Kobbe; | |||
|manuals= | |||
* [[Media:070-230.pdf|Tektronix Type K Manual]] (PDF) | |||
** [http://bama.edebris.com/download/tek/k/k.djvu Alternate (DJVU @ BAMA)] | |||
* [[Media:tek_type_k_fcp.pdf|Tektronix Type K Factory Calibration Procedure (PDF, OCR)]] | |||
}} | |||
The '''Tektronix Type K''' is a 30 MHz amplifier plug-in for [[500-series scopes]]. | |||
Type 53K/54K was designed by [[John Kobbe]], and [[introduced in 1955|introduced in March 1955]] along with the [[541]]/[[545]]. In August of 1955, just five months after introduction, it was renamed Type 53/54K, and in 1959, when the 541A/545A mainframes came out, it got its final name, Type K. It was dropped after 1970, with [[L|Type L]] replacing it. | |||
The name was deliberately chosen to be halfway into the alphabet. Slow plug-ins would use A-J and fast ones L-Z. This idea never went anywhere. | |||
{{MissingSpecs}} | |||
Max sensitivity is 50 mV/div, and bandwidth in a [[545]] is 30 MHz. | |||
At the time of introduction, it was the only plug-in that could utilize more than half of the new mainframes' speed − the [[A|Type A]], [[B|Type B]], and [[C|Type C]] upgrades weren't ready until August 1956. | |||
Types K, [[L]], and [[T]] are tied for longest production life, at 16 years. [[B]], [[D]], and [[G]] are next at 15 years. | |||
Type K was the fastest of the single-channel plug-ins, and the first plug-in to use [[T-coil|T-coils]]. Tek did not equal it until [[L|Type L]] in 1957, and did not exceed it until [[1A1|Type 1A1]] in 1964. | |||
Earlier single-channel plug-ins had two inputs and a switch to select between them, making it convenient to probe two test points at once. | |||
The Type K design could not tolerate the extra stray capacitance, and the feature was dropped, never to return. | |||
(Exception: the [[7A16P]], which has two input connectors and provides the ability to select which one is fed to the amplifier.) | |||
Late versions had a [[BNC connector]] instead of a [[UHF connector]]. | |||
Types K and [[G]] are the only letter-series plug-ins | |||
where the Gain vernier is not concentric with the step attenuator. | |||
==Pictures== | |||
<gallery> | |||
Type-k.jpg | |||
K_1.JPG | |||
K_2.JPG | |||
K_3.JPG | |||
Tek type k 2 bottom.jpg | |||
Tek type k 2 bottom3.jpg | |||
Tek type k 2 right.jpg | |||
Tek type k 2 right2.jpg | |||
K schem.png|schematic | |||
Tek 53-54 k.jpg|53/54K | |||
Tek k bottom fr.jpg|bottom view | |||
Tek k 1498 1.jpg | |||
Tek k 1498 2.jpg | |||
Tek k 1498 3.jpg | |||
Tek k 1498 4.jpg | |||
Tek k 1498 5.jpg | |||
Tek k 1498 6.jpg | |||
Tek type k late style.jpg|late style | |||
</gallery> | |||
{{Parts|K}} | |||
[[Category:500 series plugins]] | |||