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The Tektronix Type G is a plug-in differential amplifier for [[500-series scopes]]. | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
|series=500-series scopes | |||
|type=Type G | |||
|summary=20 MHz differential amplifier | |||
|image=type g.jpg | |||
|caption=Type G front view | |||
|introduced=1955 | |||
|discontinued=1971 | |||
|designers=John Kobbe | |||
|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]]. | |||
It was designed by [[John Kobbe]]. | |||
Unlike | 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 | 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 has seven tubes. | It is for measuring the difference between two externally applied input signals. | ||
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 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 | [[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 | |||
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. | ||
[[K]], [[L]], and [[T]] are tied for longest production life, at 16 years. | |||
[[B]], [[D]], and [[G]] are next at 15 years. | |||
Types G and [[K]] are the only letter-series plugins where the Gain vernier is not concentric with the step attenuator. | |||
{{MissingSpecs}} | |||
==Links== | |||
{{Documents|Link=G}} | |||
==Pictures== | |||
<gallery> | |||
Type g.jpg | |||
Type g side2.jpg | |||
Type g side.jpg | |||
Type g sidec.jpg | |||
Type g top.jpg | |||
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> | |||
==Components== | |||
{{Parts|G}} | |||
[[Category:500 series plugins]] | |||
[[Category:Differential amplifiers]] | |||