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The Type 53C is a dual-trace plug-in for [[500-series scopes]].
The Type 53C is a dual-trace plug-in for [[500-series scopes]].
It was [[introduced in 1954|introduced]] along with the [[531]] and [[535]] mainframes in 1954.
It was [[introduced in 1954|introduced]] along with the [[531]] and [[535]] mainframes in 1954. It is very possibly the first dual-trace scope or plugin ever.
In those scopes (Tek never documented its performance in the 540's),
In those scopes (Tek never documented its performance in the 540's),
its bandwidth is 8.5MHz, and like most letter-series plug-ins,
its bandwidth is 8.5MHz, and like most letter-series plug-ins,