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The Tektronix Type G is a plug-in differential amplifier for [[500-series scopes]]. | 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 | 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. | rejection ratio but operating all the way to 20MHz. Its maximum sensitivity is 50mV/div. | ||
It has seven tubes. | It has seven tubes. | ||
Revision as of 17:12, 17 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.
Types G and K are the only letter-series plugins where the Gain vernier is not concentric with the step attenuator.