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561: Difference between revisions
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The 561 is a [[560-series_scopes|560-series scope]] that was [[introduced in 1961]] and | The 561 is a [[560-series_scopes|560-series scope]] that was [[introduced in 1961]] and | ||
produced in various versions well into the 1970's. | produced in various versions well into the 1970's. | ||
Over its life, the 561 was actually a series of four very different scopes, | Over its life, the 561 was actually a series of four very different scopes, | ||
plus the rack mount versions of each. | plus the rack mount versions of each. | ||
==561== | |||
The original 561 and RM561 were introduced in 1961. | The original 561 and RM561 were introduced in 1961. | ||
Similar to the 560, also [[introduced in 1961]], the 561 has a round CRT. | Similar to the 560, also [[introduced in 1961]], the 561 has a round CRT. | ||
It supports the 50, 60 and 70 series of plug-ins, with the highest system bandwidth of 4 MHz. | It supports the 50, 60 and 70 series of plug-ins, with the highest system bandwidth of 4 MHz. | ||
==561A== | |||
The short lived 561 was replaced by the 561A and the rackmount version RM561A in 1962. | The short lived 561 was replaced by the 561A and the rackmount version RM561A in 1962. | ||
The 561A were the highest selling model in the 560 series. | The 561A were the highest selling model in the 560 series. | ||
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The highest bandwidth plug-ins gave a system bandwidth of 10 MHz. | The highest bandwidth plug-ins gave a system bandwidth of 10 MHz. | ||
==561B== | |||
The 561B / RM561B were [[introduced in 1969]]. | The 561B / RM561B were [[introduced in 1969]]. | ||
The B models actually provided no performance improvements over the 561A, | The B models actually provided no performance improvements over the 561A, | ||
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The 561B uses the same 2 and 3 series plug-ins used by the 561A. | The 561B uses the same 2 and 3 series plug-ins used by the 561A. | ||
==561S== | |||
A special 561S was introduced as a special product, | A special 561S was introduced as a special product, | ||
modified from a 561A. | modified from a 561A. | ||