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{{Plugin Sidebar|
{{Plugin Sidebar  
title=Tektronix Type G |
|manufacturer=Tektronix
summary=20 MHz differential amplifier|
|series=500-series scopes
image=type g.jpg |  
|type=Type G
caption=Type G front view|
|summary=20 MHz differential amplifier
years=1955 – 1970 |
|image=type g.jpg
type=Vertical Amplifier|
|caption=Type G front view
series=[[7000-series scopes]]|
|introduced=1955
manuals=
|discontinued=1971
* [http://w140.com/tek_g.pdf Tektronix Type G Manual (PDF)]
|designers=John Kobbe
* [http://w140.com/tek_fcp/tek_type_g_factory_cal_proc.pdf Tektronix Type G Factory Calibration Procedure (PDF)]
|manuals=
* [[Media:Tek type g.pdf|Tektronix Type G Manual]]
* [[Media:tek_type_53g.pdf|Tektronix Type 53G Manual]]
* [[Media:tek_type_g_fcp.pdf|Tektronix Type G Factory Calibration Procedure]] (OCR)
* [[Media:Tek type g cal outline.pdf|Tektronix Type G Calibration Outline]] (OCR)
}}
}}
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]].
It was designed by [[John Kobbe]].


Unlike the [[D|Type D]], the Type G is optimized for RF, achieving only a 100 to 1 common-mode
Unlike the [[D|Type D]], the Type G is optimized for RF, achieving only a 100 to 1 common-mode rejection ratio but maintaining it all the way to 20 MHz.   
rejection ratio but operating all the way to 20 MHz.   
Unlike "comparator" plug-ins such as the [[W|Type W]] and [[Z|Type Z]], the Type G does not contain an internal precision variable voltage source.   
Unlike "comparator" plug-ins such as the [[W|Type W]] and [[Z|Type Z]],  
the Type G does not contain an internal precision variable voltage source.   
It is for measuring the difference between two externally applied input signals.  
It is for measuring the difference between two externally applied input signals.  
Its maximum sensitivity is 50 mV/div.  It has seven tubes.
Its maximum sensitivity is 50 mV/div.  It has seven tubes. (The early, slower 53G has five tubes.)


Its name changed twice.  Type 53G was [[introduced in 1955|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 specified to 10 MHz in a [[535]], and its
[[541]]/[[545]], but it was only specified to 10 MHz in a [[535]], and its performance in a fast mainframe was not documented.   
performance in a fast mainframe was not documented.  When the mainframe cabinet styles
When the mainframe cabinet styles were revamped in August 1956, the Types 53[[A]], 53[[B]], 53[[C]] and 53G were all upgraded  
were revamped in August 1956, the Types 53[[A]], 53[[B]], 53[[C]] and 53G were
(sped up) and renamed; Type 53G became Type 53/54G.  It was the only early plug-in that did not go through the awkward "53x/54x" phase.
all upgraded (sped up) and renamed; Type 53G became Type 53/54G.  It was the only
early plug-in 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.
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
[[K]], [[L]], and [[T]] are tied for longest production life, at 16 years.
where the Gain vernier is not concentric with the step attenuator.
[[B]], [[D]], and [[G]] are next at 15 years.


==Specifications==
Types G and [[K]] are the only letter-series plugins where the Gain vernier is not concentric with the step attenuator.
[[Category:Specifications needed]] ''please add''
 
{{MissingSpecs}}
 
==Links==
{{Documents|Link=G}}


==Pictures==
==Pictures==
<gallery>
<gallery>
Image:Type g.jpg
Type g.jpg
Image:Type g side2.jpg
Type g side2.jpg
Image:Type g side.jpg
Type g side.jpg
Image:Type g sidec.jpg
Type g sidec.jpg
Image:Type g top.jpg
Type g top.jpg
File:Tek g schem.png|Schematic
Tek type g with box.jpg|Type G with original box
1967 Tek Plugin G 1lr.JPG|Photo courtesy of Dan Wilson (Hideaway Studio)
1967 Tek Plugin G 3lr.JPG|Photo courtesy of Dan Wilson (Hideaway Studio)
1967 Tek Plugin G 4lr.JPG|Photo courtesy of Dan Wilson (Hideaway Studio)
Tek g schem.png| 53G Schematic
Tek type g schematic.png| Type G schematic
</gallery>
</gallery>
==Components==
{{Parts|G}}
[[Category:500 series plugins]]
[[Category:Differential amplifiers]]
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