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{{Plugin Sidebar| | {{Plugin Sidebar 2 | | ||
title=Tektronix Type G | | title=Tektronix Type G | | ||
summary=20 MHz differential amplifier| | summary=20 MHz differential amplifier| | ||
image=type g.jpg | | image=type g.jpg | | ||
caption=Type G front view| | caption=Type G front view| | ||
introduced=1955 | | |||
discontinued=1970 | | |||
series=[[500-series scopes]]| | series=[[500-series scopes]]| | ||
manuals= | manuals= |
Revision as of 14:25, 21 August 2014
Template:Plugin Sidebar 2 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 rejection ratio but operating all the way to 20 MHz. Unlike "comparator" plug-ins such as the Type W and 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. Its maximum sensitivity is 50 mV/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 specified to 10 MHz 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 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.
Types G and K are the only letter-series plugins where the Gain vernier is not concentric with the step attenuator.
Specifications
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Pictures
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Schematic