Re: [CAD_CAM_EDM_DRO] Re:Scopes

mariss92705@... wrote:

> Hi,
>
> In my opinion the 465 was the best general purpose scope Tektronix
> ever made. It had excellent writing speed and focus. Its weakness was
> the voltage attenuators. These were easily prone to mechanical
> malfunction and rendered an otherwise working scope into junk because
> of the expense in replacing them.

Yup, they have a plastic cam that operates a bunch of tiny leaf switches
that clamp and unclamp against a gold-plated circuit board. Good advice,
to avoid a unit that has any problems in the attenuators. They can sometimes
be fixed, with a jeweler's loupe and tweezers, if you have real steady hands.
They are pretty rugged if not abused, but if it gets dropped down a flight
of stairs, it's a lost cause.

Jon