G: Difference between revisions
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It has seven tubes. | It has seven tubes. | ||
Its name changed twice. Type 53G was introduced in March 1955 along with the | Its name changed twice. Type 53G was [[introduced in 1955|introduced in March 1955]] along with the | ||
[[541]]/[[545]], but it was only spec'ed to 10MHz in a [[535]], and its | [[541]]/[[545]], but it was only spec'ed to 10MHz in a [[535]], and its | ||
performance in a fast mainframe was not documented. When the mainframe cabinet styles | performance in a fast mainframe was not documented. When the mainframe cabinet styles | ||
| Line 13: | Line 13: | ||
In 1959 it became Type G with no further change in design. It was dropped after 1970. | In 1959 it became Type G with no further change in design. It was dropped after 1970. | ||
Types | Types G and [[K]] are the only letter-series plugins | ||
where the Gain vernier is not concentric with the step attenuator. | where the Gain vernier is not concentric with the step attenuator. | ||
* http://w140.com/tek_fcp/tek_type_g_factory_cal_proc.pdf | * http://w140.com/tek_fcp/tek_type_g_factory_cal_proc.pdf | ||
Revision as of 18:29, 30 September 2010
The Tektronix Type G is a plug-in differential amplifier for 500-series scopes.
Unlike Type D, Type G is optimized for RF, achieving only a 100 to 1 common-mode rejection ratio but operating all the way to 20MHz. Its maximum sensitivity is 50mV/div. It has seven tubes.
Its name changed twice. Type 53G was introduced in March 1955 along with the 541/545, but it was only spec'ed to 10MHz in a 535, and its performance in a fast mainframe was not documented. When the mainframe cabinet styles were revamped in August 1956, the Types 53A, 53B, 53C and 53G were all upgraded (sped up) and renamed; Type 53G became Type 53/54G. It was the only early plugin that did not go through the awkward "53x/54x" phase. In 1959 it became Type G with no further change in design. It was dropped after 1970.
Types G and K are the only letter-series plugins where the Gain vernier is not concentric with the step attenuator.