G: Difference between revisions
Vintage dave (talk | contribs) m (link) |
Vintage dave (talk | contribs) mNo edit summary |
||
| Line 11: | Line 11: | ||
all upgraded (sped up) and renamed; Type 53G became Type 53/54G. It was the only | 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. | early plugin that did not go through the awkward "53x/54x" phase. | ||
In 1959 it became Type G with no further change in design. | 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 | Types [[G]] and [[K]] are the only letter-series plugins | ||
Revision as of 16:35, 24 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.