282
edits
C: Difference between revisions
Add description and introduction history
(New page: * http://w140.com/tek_fcp/tek_type_c_factory_cal_proc.pdf) |
Vintage dave (talk | contribs) (Add description and introduction history) |
||
| Line 1: | Line 1: | ||
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 plugin for [[500-series scopes]]. | |||
It was introduced along with the [[531]] and [[535]] mainframes in 1954. | |||
In those scopes (Tek never documented its performance in the 540's), | |||
its bandwidth is 8.5MHz, and like most letter-series plugins, | |||
its maximum vertical sensitivity is 50mV/div. Unlike [[Type A]] | |||
and [[Type B]], 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 plugin. 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, or ALT. | |||
* http://w140.com/tek_fcp/tek_type_c_factory_cal_proc.pdf | * http://w140.com/tek_fcp/tek_type_c_factory_cal_proc.pdf | ||