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The 465M is essentially a 100MHz bandwidth scope in a the cabinet of a [[455]].
{{Oscilloscope Sidebar |
The construction methods of the 455, 465M and the [[900-series_scopes|T900 series]] are similar.   
title=Tektronix 465M |
In contrast to typical 400-series portable scopes,
summary=100 MHz dual channel portable scope |
which use socketed semiconductors, the 465M's semiconductors are soldered in place.
image=Tek 465m 1.jpg |
In theory, this gives the 465M a reliability advantage.
caption=Tektronix 465M |
The front panel layout of the 465M is  
introduced=1977 |
nearly identical in appearance and function  
discontinued=(?) |
manuals=
* [http://www.ko4bb.com/getsimple/index.php?id=manuals&dir=Tektronix/Tektronix_-_465M_Oscilloscope Tektronix 465M Service Manual] 
* [[Media:465M schematics.pdf|465M schematics]]
 
* [[Media:tek_465M_schematics.pdf|465M schematics (PDF, OCR, no-OCR)]]
}}
The '''Tektronix 465M''' is a 100 MHz dual-channel portable scope, the commercial version of the AN/USM 425 standard military scope.
 
It is essentially a 100 MHz bandwidth scope in the cabinet of a [[455]].
A large user of the 465Ms was the Federal Aviation Administration.
 
==Internals==
The construction methods of the 455, 465M and the [[T900-series scopes|T900 series]] are similar.   
In contrast to typical 400-series portable scopes, which use socketed semiconductors,  
the 465M's semiconductors are soldered in place, giving it a theoretical reliability advantage.
 
The front panel layout of the 465M is nearly identical in appearance and function  
to that of the 465.   
to that of the 465.   
Since the vertical preamplifier and trigger/sweep unit  
Since the vertical preamplifier and trigger/sweep unit  
are implemented as plug-in modules, one might guess  
are implemented as plug-in modules, one might guess  
that there would be other implementations of those functions,  
that there would be other implementations of those functions,  
but there weren't
but there weren't - what you see is what was made.   
What you see is what was made.   
 
There never was a single-channel or single timebase module made,  
There never was a single-channel vertical amplifier or a single timebase module made,  
although some may have been originally on the drawing board.   
although some may have been originally on the drawing board.   


Whether or not the 465M was more rugged than the original 465 is unknown.   
Whether or not the 465M was more reliable than the original 465 is unknown.   
In the Oklahoma City Tektronix Service Center,
a lot of 465Ms came in for warranty service,
primarily from the Federal Aviation Administration
which had purchased a large quantity of that model. 
But the rate at which instruments are brought to a service center
is not by itself a measure of reliability, as one would be comparing
the failure rate of a large number of new 465Ms
that were shipped to the customer's depot
with an established base of 465s which already had
most early defects corrected.


* [http://www.ko4bb.com/manuals/index.php?dir=Tektronix/Tektronix_-_465M_Oscilloscope Tektronix 465M Service Manual (KO4BB's Manuals Repository)]
==Links==
* [https://www.youtube.com/watch?v=DLHN4PYxV3A 465M teardown] @ YouTube
* [https://www.youtube.com/watch?v=qAZOi5DsMcw Tektronix 465M Part 1 - Intro and DC tests] @ YouTube
* [https://www.youtube.com/watch?v=4uDw6F06D1I Tektronix 465M Analog Oscilloscope Repair And Checkout] @ YouTube


==Pictures==
<gallery>
<gallery>
File:Tek 465m 1.jpg
Tek 465m 1.jpg
File:Tek 465m 2.jpg
Tek 465m two triag.jpg
File:Tek 465m 3.jpg
Tek 465m 2.jpg
Tek 465m 3.jpg
Tek_465M-Front.jpg | Tek 465M Front Panel
Tek_465M-Del-Sweep.jpg | Tek 465M Delayed Sweep
Tek_465M_Without-Modules.png |Tek 465M - Internal Plugins
Tek_465M-H-Plug-in3.jpg | Tek 465M - H Plugin Assy.Board A6 to A10 - Side View
Tek_465M-H-Plug-in4.jpg | Tek 465M - H Plugin Assy.Board A6 to A10 - Side View
Tek_465M-H-Plug-in1.jpg | Tek 465M - H Plugin Assy, Board A6 to A10 - Front View
Tek_465M-H-Plug-in2.jpg| H Plugin Assy, Board A6 to A10 - Front View
Tek_465M-VertModules-A1-A5jpg.jpg | Tek 465M Vertical Plug-in Assy- Boards A1-A5
Tek_465M-Vert-Plug-in.jpg | Tek 465M Vertical Plug-in Assy- Boards A1-A5
Tek_465M-DelayLine1.jpg |  Tek 465M Delay Line In Vertical Module
Tek_465M-DelayLine2.jpg | Tek 465M Delay Line In Vertical Module
Tek_465M-Side2-Noplug-in.jpg | Tek 465M  Side View without H Plug-in
Tek_465M-Front-No-Plugin.jpg | Tek 465M without Internal Plug-Ins
Tek_465M-Side1-No-Plug-in.jpg | Tek 465M Side View without V Plug-in
Tek_465M-Top-Noplug-in.jpg | Tek 465M Side View without Internal Plug-Ins
Tek_465M-Power-HV-Trans.jpg | Tek 465M Power and HV Transformer
Tek_465M-A11-Soldered.jpg | Tek 465M - A11 Board - Soldered Transistors (Not socketed)
</gallery>
</gallery>


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[[Category:400 series scopes]]
[[Category:400 series scopes]]
[[Category:Specifications needed]]
[[Category:Specifications needed]]
[[Category:Description needed]]

Revision as of 03:24, 16 August 2019

{{{manufacturer}}} 
100 MHz dual channel portable scope
Tektronix 465M

Produced from 1977 to (?)

Manuals
(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix 465M is a 100 MHz dual-channel portable scope, the commercial version of the AN/USM 425 standard military scope.

It is essentially a 100 MHz bandwidth scope in the cabinet of a 455. A large user of the 465Ms was the Federal Aviation Administration.

Internals

The construction methods of the 455, 465M and the T900 series are similar. In contrast to typical 400-series portable scopes, which use socketed semiconductors, the 465M's semiconductors are soldered in place, giving it a theoretical reliability advantage.

The front panel layout of the 465M is nearly identical in appearance and function to that of the 465.

Since the vertical preamplifier and trigger/sweep unit are implemented as plug-in modules, one might guess that there would be other implementations of those functions, but there weren't - what you see is what was made.

There never was a single-channel vertical amplifier or a single timebase module made, although some may have been originally on the drawing board.

Whether or not the 465M was more reliable than the original 465 is unknown.

Links

Pictures