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.
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.
- 465M teardown @ YouTube
- Tektronix 465M Part 1 - Intro and DC tests @ YouTube
- Tektronix 465M Analog Oscilloscope Repair And Checkout @ YouTube
Custom ICs used in the 465M
|Page||Class||Manufacturer||Model||Part nos||Description||Designers||Used in|
|155-0151-00||Monolithic integrated circuit||Tektronix||M159||155-0151-00||trigger generator||465M|
|155-0155-00||Hybrid integrated circuit||Tektronix||155-0155-00||155-0155-00||pre-amplifier||455 • 465M|
|203-0130-90||Monolithic integrated circuit||Tektronix||M130||203-0130-90||preamplifier||Jim Woo||455 • 465M • 155-0155-00 • 155-0161-00|