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531: Difference between revisions
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The 531 and 535 were the first Tektronix scopes to accept plug-ins. | The 531 and 535 were the first Tektronix scopes to accept plug-ins. | ||
It was [[introduced in 1954|introduced in March 1954]] simultaneously with the Type 535, | It was [[introduced in 1954|introduced in March 1954]] simultaneously with the Type 535, | ||
531 with below S/N 7950 have DuMount 5BGP2 instead of Tektronix T533P2. | |||
and [[introduced in 1959|superseded in 1959]] by the Type 531A, | and [[introduced in 1959|superseded in 1959]] by the Type 531A, | ||
which has more convenient controls and a slightly faster (15MHz) vertical amplifier. | which has more convenient controls and a slightly faster (15MHz) vertical amplifier. | ||