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The '''Tektronix 556''' is a [[dual-beam scopes|dual-beam scope]], the successor to the Tektronix [[555]]. | The '''Tektronix 556''' is a 50 MHz [[dual-beam scopes|dual-beam scope]], the successor to the Tektronix [[555]]. | ||
It uses [[letter-series and 1-series plug-ins]]. A rack-mount version, the R556, also exists. | It uses [[letter-series and 1-series plug-ins]]. | ||
A rack-mount version, the R556, also exists. | |||
The 556, which is wider than the average 500-series scope, fits in the [[205]] cart. | The 556, which is wider than the average 500-series scope, fits in the [[205]] cart. | ||
The 556 was the last 500-series scope produced. | The 556 was the last 500-series scope produced. | ||
It was present in the [http://bitsavers.trailing-edge.com/pdf/tektronix/catalog/Tektronix_Catalog_1974.pdf 1974 catalog], but gone in the [http://bitsavers.trailing-edge.com/pdf/tektronix/catalog/Tektronix_Catalog_1975.pdf 1975 catalog]. (The dual-beam [[7844]] had been introduced in 1974.) | It was present in the [http://bitsavers.trailing-edge.com/pdf/tektronix/catalog/Tektronix_Catalog_1974.pdf 1974 catalog], | ||
but gone in the [http://bitsavers.trailing-edge.com/pdf/tektronix/catalog/Tektronix_Catalog_1975.pdf 1975 catalog]. | |||
(The dual-beam [[7844]] had been introduced in 1974.) | |||
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