G: Difference between revisions

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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 the Type D, the 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.
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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
were revamped in August 1956, the Types 53[[A]], 53[[B]], 53[[C]] and 53G were
were revamped in August 1956, the Types 53[[A]], 53[[B]], 53[[C]] and 53G were
all upgraded (sped up) and renamed; the 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.
 
Types [[G]] and [[K]] are the only letter-series plugins
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 18:12, 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.