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Vintage dave (talk | contribs) m (Reorder paragraphs to save an awkward date reference) |
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Type 53K/54K was [[introduced in 1955|introduced in March 1955]] along with the 541/545. | Type 53K/54K was [[introduced in 1955|introduced in March 1955]] along with the 541/545. | ||
At that time, it was the only | At that time, it was the only plug-in that could utilize the | ||
new mainframes' speed; the redesigned Types [[A]], [[B]], and [[C]] | new mainframes' speed; the redesigned Types [[A]], [[B]], and [[C]] | ||
weren't ready until August 1956. In August 1955, just five months | weren't ready until August 1956. In August 1955, just five months | ||
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It was dropped after 1970. | It was dropped after 1970. | ||
Type K was the fastest of the single-channel | Type K was the fastest of the single-channel plug-ins. | ||
Tek did not equal it until Type [[L]] in 1957, | Tek did not equal it until Type [[L]] in 1957, | ||
and did not exceed it until Type [[1A1]] in 1964. | and did not exceed it until Type [[1A1]] in 1964. | ||
Earlier single-channel | Earlier single-channel plug-ins had two inputs and a | ||
switch to select between them, making it convenient | switch to select between them, making it convenient | ||
to probe two test points at once. The Type K design | to probe two test points at once. The Type K design | ||
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The name was deliberately chosen to be halfway into the alphabet. Slow | 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. | |||
Late versions had a [[Connectors#BNC|BNC connector]] instead of a | Late versions had a [[Connectors#BNC|BNC connector]] instead of a | ||
[[Connectors#UHF|UHF connector]]. | [[Connectors#UHF|UHF connector]]. | ||
Types [[K]] and [[G]] are the only letter-series | Types [[K]] and [[G]] are the only letter-series plug-ins | ||
where the Gain vernier is not concentric with the step attenuator. | where the Gain vernier is not concentric with the step attenuator. | ||
* [http://bama.edebris.com/manuals/tek/k/| Tektronix Type K Manual (BAMA)] | * [http://bama.edebris.com/manuals/tek/k/| Tektronix Type K Manual (BAMA)] | ||
* [http://w140.com/tek_fcp/tek_type_k_factory_cal_proc.pdf Tektronix Type K Factory Calibration Procedure (PDF)] | * [http://w140.com/tek_fcp/tek_type_k_factory_cal_proc.pdf Tektronix Type K Factory Calibration Procedure (PDF)] | ||