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The Tektronix 581 is similar to the [[585]], but with simplified trigger and sweep circuitry. | The Tektronix 581 is similar to the [[585]], but with simplified trigger and sweep circuitry. | ||
Like all [[580-series_scopes|580-series scopes]], it uses [[580-series_plug-ins|580-series plug-ins]]. | |||
It was [[introduced in 1959]]. | It was [[introduced in 1959]]. | ||
The vertical signal path of the 581 is the same as that of the 585. | The vertical signal path of the 581 is the same as that of the 585. | ||
It uses the [[T581]] CRT. | It uses the [[T581]] CRT. |