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* [http://www.ko4bb.com/manuals/index.php?dir=Tektronix/Tektronix_-_465M_Oscilloscope Tektronix 465M Service Manual (PDF)]
{{Oscilloscope Sidebar
|manufacturer=Tektronix
|series=400-series scopes
|model=465M
|summary=100 MHz dual channel portable scope
|image=Tek 465m 1.jpg
|caption=Tektronix 465M
|introduced=1977
|discontinued=(?)
|designers=
|manuals=
* [[Media:070-2237-00.pdf|Tektronix 465M Service Manual]] (OCR)
<small>
'''Alternate copies'''
* [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)]]
</small>
}}
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.
 
==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
{{Documents|Link=465M}}
 
==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. 
 
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. 
 
==Pictures==
<gallery>
Tek 465m 1.jpg
Tek 465m two triag.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>
 
==Components==
{{Parts|465M}}
 
[[Category:400 series scopes]]
[[Category:Specifications needed]]

Latest revision as of 09:55, 12 October 2023

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

Tektronix 465M
100 MHz dual channel portable scope
Tektronix 465M

Produced from 1977 to (?)

Manuals

Alternate copies

(All manuals in PDF format unless noted otherwise)

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.

Links

Documents Referencing 465M

Document Class Title Authors Year Links
Tekscope 1977 V9 N2.pdf Article New Products 1977 465M • AN/USM425 • Rack Cart Model 7 • 4051E01 • 650A • P6420 • P6062B • P6063B • P6106 • 016-0629-00

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.

Pictures

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    Tek 465M Front Panel

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    Tek 465M Delayed Sweep

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    Tek 465M - Internal Plugins

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    Tek 465M - H Plugin Assy.Board A6 to A10 - Side View

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    Tek 465M - H Plugin Assy.Board A6 to A10 - Side View

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    Tek 465M - H Plugin Assy, Board A6 to A10 - Front View

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    H Plugin Assy, Board A6 to A10 - Front View

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    Tek 465M Vertical Plug-in Assy- Boards A1-A5

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    Tek 465M Vertical Plug-in Assy- Boards A1-A5

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    Tek 465M Delay Line In Vertical Module

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    Tek 465M Delay Line In Vertical Module

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    Tek 465M Side View without H Plug-in

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    Tek 465M without Internal Plug-Ins

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    Tek 465M Side View without V Plug-in

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    Tek 465M Side View without Internal Plug-Ins

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    Tek 465M Power and HV Transformer

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    Tek 465M - A11 Board - Soldered Transistors (Not socketed)

Components

Some Parts Used in the 465M

Part Part Number(s) Class Description Used in
154-0777-00 154-0777-00 CRT CRT 465M
155-0151-00 155-0151-00 Monolithic integrated circuit trigger generator 465M
155-0155-00 155-0155-00 Hybrid integrated circuit pre-amplifier 455 • 465M
1N3182 152-0269-00 Discrete component varactor diode 3L5 • 1L5 • 3T7 • 492 • 465M • 7844 • 2465
203-0130-90 203-0130-90 Monolithic integrated circuit preamplifier 455 • 465M • 155-0155-00 • 155-0161-00
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