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The Tektronix Type 81 is a plug-in adapter so that [[letter-series and 1-series plug-ins]] can
{{Plugin Sidebar|
be used in [[580-series scopes]].  The Type 81 contains a two-stage amplifier. The letter-series
title=Tektronix Type 80|
plug-in drives the input stage of the Type 81 which is a high impedance, similar to the input
summary=Vertical amplifier|
of a 530-, 540-, or 550-series scope.  The second stage of the Type 81 is a cathode-follower,
image=81.JPG |
which drives the 580-series scope using a low impedance, as is required by 580-series scopes.
caption=Type 81 front view|
 
years=? – ? |
The 81 and 81A are significantly different.
type=Plugin adapter|
Type 81 is tube-based and has bandwidth of 33 megacycles.
series=[[580-series scopes]]|
Type 81A is solid-state and has bandwidth of 50 megacycles.
manuals=
* [http://w140.com/tek-81.pdf Tektronix Type 81 Manual (PDF)]
* [http://w140.com/tek-81.pdf Tektronix Type 81 Manual (PDF)]
* [http://w140.com/tek-81a.pdf Tektronix Type 81A Manual (PDF)]
* [http://w140.com/tek-81a.pdf Tektronix Type 81A Manual (PDF)]
* [http://w140.com/tek_fcp/tek_type_81_factory_cal_proc.pdf Tektronix Type 81 Factory Calibration Procedure (PDF)]
* [http://w140.com/tek_fcp/tek_type_81_factory_cal_proc.pdf Tektronix Type 81 Factory Calibration Procedure (PDF)]
}}
The '''Tektronix Type 81''' is a plug-in adapter so that [[letter-series and 1-series plug-ins]] can be used in [[580-series scopes]]. 
The Type 81 contains a two-stage amplifier.  The letter-series plug-in drives
the input stage of the Type 81 which is a high impedance, similar to the input
of a 530-, 540-, or 550-series scope.  The second stage of the Type 81 is a
cathode-follower, which drives the 580-series scope using a low impedance, as
is required by 580-series scopes.
The 81 and 81A are significantly different.
Type 81 is tube-based and has bandwidth of 33 MHz.
Type 81A is solid-state and has bandwidth of 50 MHz.
==Specifications==
[[Category:Specifications needed]] ''please add''


==Pictures==
<gallery>
<gallery>
File:81.JPG|Type 81 with a [[1A2]] in a Netherlands-made [[585|585A]]
File:81.JPG|Type 81 with a [[1A2]] in a Netherlands-made [[585|585A]]
Retrieved from "https://w140.com/tekwiki/wiki/Special:MobileDiff/10462"

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