Re: Focus on 475 scope

donald collie
 

Looked at the photos - yes, that`s about as sharp as mine goes.
Cheers!...............................................................................................................................Don
C.

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On Mon, Jan 29, 2018 at 5:24 PM, Chuck Harris <cfharris@...> wrote:

Usually, a pretty safe way is to force it to be out of focus
by turning the focus control fully one way, or the other.

-Chuck Harris

David Hess wrote:
My 7603 which spent considerable time in storage had its brightness
and sharpness improve after operating for days. if you do this, then
leave the beam intensity low but not off and for safety, only leave
the oscilloscope operating under supervision in case something goes
wrong.

On Fri, 26 Jan 2018 09:21:10 -0500, you wrote:

If your scope intensity double peaks, it could mean
that it is gassy, or it could mean that it has low
emission. Running the CRT will help get the gas
absorbed by the getter, so it may improve.

-Chuck Harris




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