D: Difference between revisions
Vintage dave (talk | contribs) (Add description and history) |
Vintage dave (talk | contribs) m (add 5814 warning) |
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then shortened to Type D in 1959 with the introduction of | then shortened to Type D in 1959 with the introduction of | ||
the 5xxA scopes. | the 5xxA scopes. | ||
Some production used a pair of 5814 tubes at the input while others used 12AU7's. | |||
These two tube types have different heater currents, and because the heaters are | |||
series-wired, you cannot switch from one type to the other without circuit modification. | |||
* http://bama.edebris.com/manuals/tek/d/ | * http://bama.edebris.com/manuals/tek/d/ | ||
* http://w140.com/tek_fcp/tek_type_d_factory_cal_proc.pdf | * http://w140.com/tek_fcp/tek_type_d_factory_cal_proc.pdf | ||
Revision as of 14:05, 17 September 2010
The Tektronix Type D is a plug-in for 500-series scopes.
It has high gain, and the bandwidth depends on the gain, ranging from 2MHz at 50mV/div and up, to 300kHz at 1mV/div. It displays the difference between two input signals, with a common-mode rejection ratio of 10,000. It has six tubes, on a shock-mounted subchassis to avoid microphonics.
Type D was introduced with the 531 and 535 in 1954 as Type 53D, was briefly renamed Type 53D/54D in 1955 with the introduction of the 541 and [[545], then quickly renamed Type 53/54D, then shortened to Type D in 1959 with the introduction of the 5xxA scopes.
Some production used a pair of 5814 tubes at the input while others used 12AU7's. These two tube types have different heater currents, and because the heaters are series-wired, you cannot switch from one type to the other without circuit modification.