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A: Difference between revisions
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Vintage dave (talk | contribs) (53A bandwidth) |
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introduced the first 500-series scopes, the [[531]] and the [[535]]. | introduced the first 500-series scopes, the [[531]] and the [[535]]. | ||
Type 53A has only three tubes, no [[T-coil peaking|T-coils]] or cross-bootstrap, and a bandwidth of 10 MHz in the 530 mainframes. | Type 53A has only three tubes, no [[T-coil peaking|T-coils]] or cross-bootstrap, and a bandwidth of 10 MHz in the 530 mainframes. | ||
Catalogs don't list 53A performance in the 540 mainframes. The Factory Cal Procedure says 20 MHz, but this is wrong. (A Type 53A's measured 3dB point was around 17MHz while a Type A made 23MHz. Furthermore, the front-panel artwork reads " | Catalogs don't list 53A performance in the 540 mainframes. The Factory Cal Procedure says 20 MHz, but this is wrong. (A Type 53A's measured 3dB point was around 17MHz while a Type A made 23MHz. Furthermore, the front-panel artwork reads ".017 usec" for 53A and .015 for A.) | ||
Type A was the first letter-series plug-in to be discontinued, in 1962. | Type A was the first letter-series plug-in to be discontinued, in 1962. | ||