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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, |
Revision as of 18:57, 25 July 2014
Actually, there never was a Type C, but that name is sometimes used as shorthand for the official "Type 53C" and "Type 53/54C" nomenclatures.
The Type 53C is a dual-trace plug-in for 500-series scopes. It was 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), its bandwidth is 8.5MHz, and like most letter-series plug-ins, its maximum vertical sensitivity is 50mV/div. Unlike the Type A and Type B, the Type C had the ability to invert the signal before display.
Type 53C was replaced by Type 53/54C in 1956 when the 541 and 545 were introduced. The Type 53/54C's bandwidth is 24MHz in those scopes. In 1959 it was replaced by Type CA.
At 15 tubes, the Type 53/54C and Type CA have the highest tube count of any letter-series plug-in. Each channel consists of a 6AK5 cathode-follower driving a 12AU6 differential pair which drives a 6AU6 differential pair. The two channels converge on a 12AT7 cross-coupled cathode-follower. Four more tubes, a 6AL5 and three 12AT7's, comprise a logic circuit which determines which channel drives the output at any given moment. The options are A, B, CHOPPED, and ALT.
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53C-Plugin´s Front
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53C-Plugin´s chassis
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53C-Plugin´s chassis side
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53/54C-Plugin´s front
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53/54C-Plugin´s chassis
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53/54C-Plugin´s chassis bottom
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